feat(dashboards-v2): wire fillSpans into the query request

Map the panel's visualization.fillSpans to the V5 request's formatOptions.fillGaps
(backend-fills missing points with 0), mirroring V1's `fillGaps: widget.fillSpans`.
buildQueryRangeRequest takes a fillGaps arg; usePanelQuery reads visualization.fillSpans
and includes it in the react-query key so toggling it refetches rather than reading a
stale response.

git commit -F "$GITDIR/SZ_CMSG.txt" 2>&1 | tail -4; echo "---log---"; git log --oneline -1

docs/api/openapi.yml

@@ -2769,16 +2769,9 @@ components:
             type: string
           nullable: true
           type: object
-        mode:
-          $ref: '#/components/schemas/DashboardtypesLegendMode'
         position:
           $ref: '#/components/schemas/DashboardtypesLegendPosition'
       type: object
-    DashboardtypesLegendMode:
-      enum:
-      - list
-      - table
-      type: string
     DashboardtypesLegendPosition:
       enum:
       - bottom
@@ -3328,13 +3321,8 @@ components:
     DashboardtypesSpanGaps:
       properties:
         fillLessThan:
-          description: The maximum gap size to connect when fillOnlyBelow is true.
-            Gaps larger than this duration are left disconnected.
           type: string
         fillOnlyBelow:
-          description: Controls whether lines connect across null values. When false
-            (default), all gaps are connected. When true, only gaps smaller than fillLessThan
-            are connected.
           type: boolean
       type: object
     DashboardtypesStorableDashboardData:
@@ -3401,6 +3389,7 @@ components:
       required:
       - value
       - color
+      - label
       type: object
     DashboardtypesTimePreference:
       enum:

frontend/jest.setup.ts

@@ -29,6 +29,18 @@ if (!HTMLElement.prototype.scrollIntoView) {
 	HTMLElement.prototype.scrollIntoView = function (): void {};
 }
 
+// jsdom doesn't implement the Pointer Capture API, which Radix UI primitives
+// (e.g. @signozhq/ui Select) call when opening. Stub them so those components
+// can be exercised in tests.
+if (!HTMLElement.prototype.hasPointerCapture) {
+	HTMLElement.prototype.hasPointerCapture = function (): boolean {
+		return false;
+	};
+}
+if (!HTMLElement.prototype.releasePointerCapture) {
+	HTMLElement.prototype.releasePointerCapture = function (): void {};
+}
+
 if (typeof window.IntersectionObserver === 'undefined') {
 	class IntersectionObserverMock {
 		observe(): void {}

frontend/src/api/generated/services/sigNoz.schemas.ts

@@ -3208,10 +3208,6 @@ export interface DashboardtypesPanelFormattingDTO {
 	unit?: string;
 }
 
-export enum DashboardtypesLegendModeDTO {
-	list = 'list',
-	table = 'table',
-}
 export enum DashboardtypesLegendPositionDTO {
 	bottom = 'bottom',
 	right = 'right',
@@ -3231,7 +3227,6 @@ export interface DashboardtypesLegendDTO {
 	 * @type object,null
 	 */
 	customColors?: DashboardtypesLegendDTOCustomColors;
-	mode?: DashboardtypesLegendModeDTO;
 	position?: DashboardtypesLegendPositionDTO;
 }
 
@@ -3243,7 +3238,7 @@ export interface DashboardtypesThresholdWithLabelDTO {
 	/**
 	 * @type string
 	 */
-	label?: string;
+	label: string;
 	/**
 	 * @type string
 	 */
@@ -3908,12 +3903,10 @@ export enum DashboardtypesLineStyleDTO {
 export interface DashboardtypesSpanGapsDTO {
 	/**
 	 * @type string
-	 * @description The maximum gap size to connect when fillOnlyBelow is true. Gaps larger than this duration are left disconnected.
 	 */
 	fillLessThan?: string;
 	/**
 	 * @type boolean
-	 * @description Controls whether lines connect across null values. When false (default), all gaps are connected. When true, only gaps smaller than fillLessThan are connected.
 	 */
 	fillOnlyBelow?: boolean;
 }

frontend/src/constants/query.ts

@@ -1,5 +1,6 @@
 export enum QueryParams {
 	interval = 'interval',
+	editPanelId = 'editPanelId',
 	startTime = 'startTime',
 	endTime = 'endTime',
 	service = 'service',

frontend/src/container/DashboardContainer/visualization/charts/Pie/Pie.module.scss

@@ -63,5 +63,6 @@
 	flex: 0 0 auto;
 	min-height: 0;
 	min-width: 0;
-	padding: 8px;
+	padding-left: 12px;
+	padding-bottom: 12px;
 }

frontend/src/container/DashboardContainer/visualization/charts/Pie/Pie.tsx

@@ -16,7 +16,7 @@ import PieArc from './PieArc';
 import PieCenterLabel from './PieCenterLabel';
 import styles from './Pie.module.scss';
 import { PieTooltipData } from './types';
-import { getFillColor } from './utils';
+import { getDonutGeometry, getFillColor } from './utils';
 
 /**
  * Donut chart rendered with @visx. Splits its area into chart + legend with the
@@ -78,16 +78,12 @@ export default function Pie({
 			[containerWidth, containerHeight, position, data],
 		);
 
-	// Donut geometry derived from the allocated chart box.
-	const { size, radius, innerRadius } = useMemo(() => {
-		const nextSize = Math.min(width, height);
-		const nextRadius = nextSize * 0.35;
-		return {
-			size: nextSize,
-			radius: nextRadius,
-			innerRadius: nextRadius * 0.6,
-		};
-	}, [width, height]);
+	// Donut geometry derived from the allocated chart box, sized to leave room
+	// for the external leader labels (see getDonutGeometry).
+	const { size, radius, innerRadius } = useMemo(
+		() => getDonutGeometry(width, height),
+		[width, height],
+	);
 
 	const totalValue = useMemo(
 		() => visibleData.reduce((sum, slice) => sum + slice.value, 0),

frontend/src/container/DashboardContainer/visualization/charts/Pie/__tests__/utils.test.ts

@@ -1,11 +1,40 @@
 import {
 	getArcGeometry,
+	getDonutGeometry,
 	getFillColor,
 	getScaledFontSize,
 	lightenColor,
 } from '../utils';
 
 describe('Pie utils', () => {
+	describe('getDonutGeometry', () => {
+		it('keeps the label anchor inside the box (reserves room for leader labels)', () => {
+			const { radius } = getDonutGeometry(400, 300);
+			const half = Math.min(400, 300) / 2; // 150
+			// The label anchor sits at radius * 1.3 and must stay within the box
+			// half-extent so labels are not clipped.
+			expect(radius * 1.3).toBeLessThanOrEqual(half);
+			// And it should use the available room (anchor = half - 22 allowance).
+			expect(radius * 1.3).toBeCloseTo(half - 22);
+		});
+
+		it('derives size and inner radius from the outer radius', () => {
+			const { size, radius, innerRadius } = getDonutGeometry(300, 300);
+			expect(size).toBeCloseTo(radius * 2);
+			expect(innerRadius).toBeCloseTo(radius * 0.6);
+		});
+
+		it('sizes off the smaller dimension so it fits both axes', () => {
+			expect(getDonutGeometry(1000, 200)).toStrictEqual(
+				getDonutGeometry(200, 1000),
+			);
+		});
+
+		it('never returns a negative radius for a box too small for labels', () => {
+			expect(getDonutGeometry(20, 20).radius).toBe(0);
+		});
+	});
+
 	describe('getScaledFontSize', () => {
 		it('returns the base size for empty text', () => {
 			expect(getScaledFontSize({ text: '', baseSize: 30, innerRadius: 100 })).toBe(

frontend/src/container/DashboardContainer/visualization/charts/Pie/types.ts

@@ -10,6 +10,16 @@ export interface ScaledFontSizeArgs {
 	innerRadius: number;
 }
 
+/** Donut sizing for a given chart box: the outer/inner radii and the square it spans. */
+export interface DonutGeometry {
+	/** Outer diameter — feeds the visx Pie width/height and the render guard. */
+	size: number;
+	/** Outer radius of the donut ring. */
+	radius: number;
+	/** Inner radius (the hole) — also bounds the centre-total font. */
+	innerRadius: number;
+}
+
 export interface ArcGeometry {
 	/** Outer point where the leader label sits. */
 	labelX: number;

frontend/src/container/DashboardContainer/visualization/charts/Pie/utils.ts

@@ -3,7 +3,37 @@
  * so the renderer stays declarative (per the one-component-per-file rule).
  */
 
-import { ArcGeometry, ParsedRgb, ScaledFontSizeArgs } from './types';
+import {
+	ArcGeometry,
+	DonutGeometry,
+	ParsedRgb,
+	ScaledFontSizeArgs,
+} from './types';
+
+// Leader-line + two-line label/value drawn outside the donut. `getArcGeometry`
+// anchors the label at `radius * LABEL_RADIUS_RATIO`; `LABEL_TEXT_ALLOWANCE` is
+// the px reserved beyond that anchor for the (10px, two-line) text so it never
+// clips against the SVG edge.
+const LABEL_RADIUS_RATIO = 1.3;
+const LABEL_TEXT_ALLOWANCE = 22;
+const INNER_RADIUS_RATIO = 0.6;
+
+/**
+ * Sizes the donut to fit inside a `width × height` box *with room for the
+ * external leader labels*. The label anchor sits at `radius * 1.3`, so we solve
+ * the outer radius back from the box's half-extent minus the text allowance —
+ * guaranteeing the labels stay inside the SVG instead of being clipped (V1 used
+ * a flat `0.35 * min(w,h)`, which left too little margin on small panels).
+ */
+export function getDonutGeometry(width: number, height: number): DonutGeometry {
+	const half = Math.min(width, height) / 2;
+	const radius = Math.max(0, (half - LABEL_TEXT_ALLOWANCE) / LABEL_RADIUS_RATIO);
+	return {
+		size: radius * 2,
+		radius,
+		innerRadius: radius * INNER_RADIUS_RATIO,
+	};
+}
 
 /**
  * Shrinks the centre-total font as the text gets longer so it never overflows
@@ -37,7 +67,7 @@ export function getArcGeometry(
 	radius: number,
 ): ArcGeometry {
 	const angle = (startAngle + endAngle) / 2;
-	const labelRadius = radius * 1.3;
+	const labelRadius = radius * LABEL_RADIUS_RATIO;
 	const lineEndRadius = radius * 1.1;
 	return {
 		labelX: Math.sin(angle) * labelRadius,

frontend/src/container/DashboardContainer/visualization/charts/__tests__/utils.test.ts

@@ -0,0 +1,79 @@
+import { LegendPosition } from 'lib/uPlotV2/components/types';
+
+import { calculateChartDimensions } from '../utils';
+
+const labels = (count: number, length = 20): string[] =>
+	Array.from({ length: count }, (_, i) =>
+		`label-${i}`.padEnd(length, 'x').slice(0, length),
+	);
+
+describe('calculateChartDimensions', () => {
+	it('returns all zeros when the container has no space', () => {
+		expect(
+			calculateChartDimensions({
+				containerWidth: 0,
+				containerHeight: 300,
+				legendConfig: { position: LegendPosition.BOTTOM },
+				seriesLabels: labels(3),
+			}),
+		).toStrictEqual({
+			width: 0,
+			height: 0,
+			legendWidth: 0,
+			legendHeight: 0,
+			averageLegendWidth: 0,
+		});
+	});
+
+	it('RIGHT: reserves a side column capped at 30% of the width and keeps full height', () => {
+		const dims = calculateChartDimensions({
+			containerWidth: 1000,
+			containerHeight: 400,
+			legendConfig: { position: LegendPosition.RIGHT },
+			seriesLabels: labels(10, 40),
+		});
+		// 40-char labels approximate to 336px, capped at min(240, 30% of 1000).
+		expect(dims.legendWidth).toBe(240);
+		expect(dims.width).toBe(760);
+		expect(dims.height).toBe(400);
+		expect(dims.legendHeight).toBe(400);
+	});
+
+	it('BOTTOM: a single row of items reserves one legend row', () => {
+		const dims = calculateChartDimensions({
+			containerWidth: 1000,
+			containerHeight: 500,
+			legendConfig: { position: LegendPosition.BOTTOM },
+			seriesLabels: labels(3),
+		});
+		// One row = line height (28) + padding (12).
+		expect(dims.legendHeight).toBe(40);
+		expect(dims.height).toBe(460);
+		expect(dims.legendWidth).toBe(1000);
+	});
+
+	it('BOTTOM: many items cap at two rows on a tall container', () => {
+		const dims = calculateChartDimensions({
+			containerWidth: 1000,
+			containerHeight: 500,
+			legendConfig: { position: LegendPosition.BOTTOM },
+			seriesLabels: labels(40),
+		});
+		// Two rows = 2 * 40 - 12 (no trailing padding) = 68, under the 80px cap.
+		expect(dims.legendHeight).toBe(68);
+		expect(dims.height).toBe(432);
+	});
+
+	it('BOTTOM: on a short container the legend never takes more than 30% of the height', () => {
+		const dims = calculateChartDimensions({
+			containerWidth: 1000,
+			containerHeight: 160,
+			legendConfig: { position: LegendPosition.BOTTOM },
+			seriesLabels: labels(40),
+		});
+		// Without the height-relative cap the legend would take 68px of a 160px
+		// panel and the chart (pie especially) collapses to a sliver.
+		expect(dims.legendHeight).toBe(48); // 30% of 160
+		expect(dims.height).toBe(112);
+	});
+});

frontend/src/container/DashboardContainer/visualization/charts/utils.ts

@@ -116,7 +116,15 @@ export function calculateChartDimensions({
 			? legendRowCount * legendRowHeight - LEGEND_PADDING
 			: legendRowHeight;
 
-	const maxAllowedLegendHeight = Math.min(2 * legendRowHeight, 80);
+	// Cap at two rows / 80px, and never more than 30% of the container height
+	// (the doc above always promised the %-cap; without it, short grid panels
+	// hand most of their area to the legend and the chart — the pie donut
+	// especially — collapses to a sliver). 30% mirrors the RIGHT-legend width cap.
+	const maxAllowedLegendHeight = Math.min(
+		2 * legendRowHeight,
+		80,
+		Math.floor(containerHeight * 0.3),
+	);
 
 	const bottomLegendHeight = Math.min(
 		idealBottomLegendHeight,

frontend/src/container/DashboardContainer/visualization/layout/ChartLayout/ChartLayout.styles.scss

@@ -7,15 +7,10 @@
 
 	&--legend-right {
 		flex-direction: row;
-
-		.chart-layout__legend-wrapper {
-			padding-left: 0 !important;
-		}
 	}
 
 	&__legend-wrapper {
 		padding-left: 12px;
 		padding-bottom: 12px;
-		overflow: auto;
 	}
 }

frontend/src/container/GridTableComponent/__tests__/utils.test.tsx

@@ -2,6 +2,7 @@ import { Query } from 'types/api/queryBuilder/queryBuilderData';
 
 import {
 	createColumnsAndDataSource,
+	evaluateThresholdWithConvertedValue,
 	getQueryLegend,
 	sortFunction,
 } from '../utils';
@@ -225,3 +226,30 @@ describe('Table Panel utils with QB v5 aggregations', () => {
 		).toBe(0);
 	});
 });
+
+// No units passed, so `convertUnit` is a no-op and the comparison runs against
+// the raw value — exercising `evaluateCondition`'s operator switch directly.
+describe('evaluateThresholdWithConvertedValue operators', () => {
+	it('handles ordering operators', () => {
+		expect(evaluateThresholdWithConvertedValue(5, 3, '>')).toBe(true);
+		expect(evaluateThresholdWithConvertedValue(2, 3, '>')).toBe(false);
+		expect(evaluateThresholdWithConvertedValue(2, 3, '<')).toBe(true);
+		expect(evaluateThresholdWithConvertedValue(3, 3, '>=')).toBe(true);
+		expect(evaluateThresholdWithConvertedValue(3, 3, '<=')).toBe(true);
+	});
+
+	it('treats = and == as equality', () => {
+		expect(evaluateThresholdWithConvertedValue(3, 3, '=')).toBe(true);
+		expect(evaluateThresholdWithConvertedValue(3, 3, '==')).toBe(true);
+		expect(evaluateThresholdWithConvertedValue(4, 3, '=')).toBe(false);
+	});
+
+	it('handles != as inequality', () => {
+		expect(evaluateThresholdWithConvertedValue(4, 3, '!=')).toBe(true);
+		expect(evaluateThresholdWithConvertedValue(3, 3, '!=')).toBe(false);
+	});
+
+	it('returns false for an unknown operator', () => {
+		expect(evaluateThresholdWithConvertedValue(3, 3, '~')).toBe(false);
+	});
+});

frontend/src/container/GridTableComponent/utils.ts

@@ -29,8 +29,11 @@ function evaluateCondition(
 			return value >= thresholdValue;
 		case '<=':
 			return value <= thresholdValue;
+		case '=':
 		case '==':
 			return value === thresholdValue;
+		case '!=':
+			return value !== thresholdValue;
 		default:
 			return false;
 	}

frontend/src/container/NewWidget/RightContainer/Threshold/types.ts

@@ -2,7 +2,7 @@ import { Dispatch, ReactNode, SetStateAction } from 'react';
 import { PANEL_TYPES } from 'constants/queryBuilder';
 import { ColumnUnit } from 'types/api/dashboard/getAll';
 
-export type ThresholdOperators = '>' | '<' | '>=' | '<=' | '=';
+export type ThresholdOperators = '>' | '<' | '>=' | '<=' | '=' | '!=';
 
 export type ThresholdProps = {
 	index: string;

frontend/src/container/NewWidget/RightContainer/constants.ts

@@ -6,6 +6,8 @@ export const operatorOptions: DefaultOptionType[] = [
 	{ value: '>=', label: '>=' },
 	{ value: '<', label: '<' },
 	{ value: '<=', label: '<=' },
+	{ value: '=', label: '=' },
+	{ value: '!=', label: '≠' },
 ];
 
 export const showAsOptions: DefaultOptionType[] = [

frontend/src/hooks/__tests__/useConfirmableAction.test.ts

@@ -0,0 +1,61 @@
+import { act, renderHook } from '@testing-library/react';
+
+import { useConfirmableAction } from '../useConfirmableAction';
+
+describe('useConfirmableAction', () => {
+	it('starts closed and idle', () => {
+		const { result } = renderHook(() =>
+			useConfirmableAction(jest.fn().mockResolvedValue(undefined)),
+		);
+		expect(result.current.open).toBe(false);
+		expect(result.current.isPending).toBe(false);
+	});
+
+	it('request() opens the prompt without running the action', () => {
+		const action = jest.fn().mockResolvedValue(undefined);
+		const { result } = renderHook(() => useConfirmableAction(action));
+
+		act(() => result.current.request());
+
+		expect(result.current.open).toBe(true);
+		expect(action).not.toHaveBeenCalled();
+	});
+
+	it('confirm() runs the action and closes on success', async () => {
+		const action = jest.fn().mockResolvedValue(undefined);
+		const { result } = renderHook(() => useConfirmableAction(action));
+
+		act(() => result.current.request());
+		await act(async () => {
+			await result.current.confirm();
+		});
+
+		expect(action).toHaveBeenCalledTimes(1);
+		expect(result.current.open).toBe(false);
+		expect(result.current.isPending).toBe(false);
+	});
+
+	it('keeps the prompt open and resets pending when the action rejects', async () => {
+		const action = jest.fn().mockRejectedValue(new Error('boom'));
+		const { result } = renderHook(() => useConfirmableAction(action));
+
+		act(() => result.current.request());
+		await act(async () => {
+			await expect(result.current.confirm()).rejects.toThrow('boom');
+		});
+
+		expect(result.current.open).toBe(true);
+		expect(result.current.isPending).toBe(false);
+	});
+
+	it('cancel() closes the prompt without running the action', () => {
+		const action = jest.fn().mockResolvedValue(undefined);
+		const { result } = renderHook(() => useConfirmableAction(action));
+
+		act(() => result.current.request());
+		act(() => result.current.cancel());
+
+		expect(result.current.open).toBe(false);
+		expect(action).not.toHaveBeenCalled();
+	});
+});

frontend/src/hooks/useConfirmableAction.ts

@@ -0,0 +1,45 @@
+import { useCallback, useMemo, useState } from 'react';
+
+export interface ConfirmableAction {
+	/** Whether the confirmation prompt is open. */
+	open: boolean;
+	/** The confirmed action is in flight. */
+	isPending: boolean;
+	/** Open the confirmation prompt (e.g. from a menu item / button). */
+	request: () => void;
+	/** Run the action, tracking the in-flight flag; closes the prompt on success. */
+	confirm: () => Promise<void>;
+	/** Dismiss the prompt without acting. */
+	cancel: () => void;
+}
+
+/**
+ * Generic two-step confirm flow for a (usually destructive) async action.
+ * `request()` opens the prompt, `confirm()` runs `action` while tracking an
+ * in-flight flag and closes on success, `cancel()` dismisses it. Owns only the
+ * confirm state machine — what renders the prompt (dialog, popover) is the
+ * caller's concern, so it stays reusable across confirm surfaces.
+ */
+export function useConfirmableAction(
+	action: () => Promise<void>,
+): ConfirmableAction {
+	const [open, setOpen] = useState(false);
+	const [isPending, setIsPending] = useState(false);
+
+	const request = useCallback((): void => setOpen(true), []);
+	const cancel = useCallback((): void => setOpen(false), []);
+	const confirm = useCallback(async (): Promise<void> => {
+		setIsPending(true);
+		try {
+			await action();
+			setOpen(false);
+		} finally {
+			setIsPending(false);
+		}
+	}, [action]);
+
+	return useMemo(
+		() => ({ open, isPending, request, confirm, cancel }),
+		[open, isPending, request, confirm, cancel],
+	);
+}

frontend/src/lib/uPlotV2/components/Legend/Legend.styles.scss

@@ -44,7 +44,6 @@
 				auto-fill,
 				minmax(var(--legend-average-width, 240px), 1fr)
 			);
-			row-gap: 4px;
 			column-gap: 12px;
 		}
 
@@ -109,6 +108,10 @@
 	align-items: center;
 	gap: 6px;
 	padding: 4px 8px;
+	// Include padding within the width so a full-width row (legend-item-right) fits its
+	// column instead of overflowing by the 16px horizontal padding — there is no global
+	// border-box reset, so the default content-box would make it overflow.
+	box-sizing: border-box;
 	max-width: 100%;
 	overflow: hidden;
 	border-radius: 4px;

frontend/src/lib/uPlotV2/config/UPlotSeriesBuilder.ts

@@ -87,7 +87,7 @@ export class UPlotSeriesBuilder extends ConfigBuilder<
 			lineConfig.fill = `${finalFillColor}40`;
 		} else if (fillMode && fillMode !== FillMode.None) {
 			if (fillMode === FillMode.Solid) {
-				lineConfig.fill = finalFillColor;
+				lineConfig.fill = `${finalFillColor}70`;
 			} else if (fillMode === FillMode.Gradient) {
 				lineConfig.fill = (self: uPlot): CanvasGradient =>
 					generateGradientFill(self, finalFillColor, 'rgba(0, 0, 0, 0)');

frontend/src/pages/DashboardPageV2/DashboardContainer/PanelEditor/ConfigPane/ConfigPane.module.scss

@@ -0,0 +1,86 @@
+.config {
+	display: flex;
+	flex-direction: column;
+	flex: 1;
+	padding: 18px 18px 44px;
+	background-color: var(--l1-background);
+	border-left: 1px solid var(--l2-border);
+	overflow-y: auto;
+	overflow-x: hidden;
+
+	// Thin, unobtrusive scrollbar (replaces the chunky native bar).
+	$thumb: color-mix(in srgb, var(--bg-vanilla-100) 16%, transparent);
+
+	scrollbar-width: thin;
+	scrollbar-color: $thumb transparent;
+
+	&::-webkit-scrollbar {
+		width: 8px;
+	}
+
+	&::-webkit-scrollbar-track {
+		background: transparent;
+	}
+
+	&::-webkit-scrollbar-thumb {
+		background: $thumb;
+		border-radius: 999px;
+		border: 2px solid transparent;
+		background-clip: padding-box;
+	}
+}
+
+.heading {
+	margin-bottom: 18px;
+}
+
+.title {
+	display: flex;
+	align-items: baseline;
+	gap: 9px;
+	white-space: nowrap;
+}
+
+.kind {
+	font-family: var(--font-mono, monospace);
+	font-size: 12px;
+	color: var(--text-vanilla-400);
+}
+
+.subtitle {
+	font-size: 12px;
+	color: var(--text-vanilla-400);
+}
+
+.eyebrow {
+	display: block;
+	margin: 0 2px 10px;
+	font-size: 11px;
+	font-weight: 600;
+	letter-spacing: 0.06em;
+	text-transform: uppercase;
+	color: var(--text-vanilla-400);
+}
+
+.group {
+	display: flex;
+	flex-direction: column;
+	gap: 16px;
+}
+
+.field {
+	display: flex;
+	flex-direction: column;
+	gap: 8px;
+}
+
+.divider {
+	height: 1px;
+	background: var(--l2-border);
+	margin: 18px 0;
+}
+
+.sections {
+	display: flex;
+	flex-direction: column;
+}

frontend/src/pages/DashboardPageV2/DashboardContainer/PanelEditor/ConfigPane/ConfigPane.tsx

@@ -0,0 +1,91 @@
+import { Input } from 'antd';
+import { Typography } from '@signozhq/ui/typography';
+import type { DashboardtypesPanelSpecDTO } from 'api/generated/services/sigNoz.schemas';
+import { getPanelDefinition } from 'pages/DashboardPageV2/DashboardContainer/Panels';
+
+import type { LegendSeries } from '../useLegendSeries';
+import SectionSlot from './SectionSlot/SectionSlot';
+
+import styles from './ConfigPane.module.scss';
+
+interface ConfigPaneProps {
+	/** Full plugin kind (e.g. `signoz/TimeSeriesPanel`); drives which sections show. */
+	panelKind: string | undefined;
+	/** The panel spec — the single editing surface (title/description + section slices). */
+	spec: DashboardtypesPanelSpecDTO;
+	onChangeSpec: (next: DashboardtypesPanelSpecDTO) => void;
+	/** Panel's resolved series, provided to sections that need them (legend colors). */
+	legendSeries: LegendSeries[];
+}
+
+/**
+ * Right-hand configuration pane. Renders the always-present general fields (title +
+ * description) followed by the panel kind's configuration sections (Formatting, Axes,
+ * …). The section list is declared per kind (`PanelDefinition.sections`) and rendered
+ * generically via the section registry — only sections with a built editor appear.
+ */
+function ConfigPane({
+	panelKind,
+	spec,
+	onChangeSpec,
+	legendSeries,
+}: ConfigPaneProps): JSX.Element {
+	const definition = getPanelDefinition(panelKind);
+	const sections = definition?.sections ?? [];
+
+	// Title/description are just a slice of the spec — edit them through the same
+	// onChangeSpec path the sections use, so there's a single editing surface.
+	const setDisplayField = (field: 'name' | 'description', value: string): void =>
+		onChangeSpec({ ...spec, display: { ...spec.display, [field]: value } });
+
+	return (
+		<div className={styles.config}>
+			<header className={styles.heading}>
+				<Typography.Text>Panel settings</Typography.Text>
+			</header>
+
+			<div className={styles.group}>
+				<div className={styles.field}>
+					<Typography.Text>Title</Typography.Text>
+					<Input
+						data-testid="panel-editor-v2-title"
+						value={spec.display?.name ?? ''}
+						placeholder="Panel title"
+						onChange={(e): void => setDisplayField('name', e.target.value)}
+					/>
+				</div>
+
+				<div className={styles.field}>
+					<Typography.Text>Description</Typography.Text>
+					<Input.TextArea
+						data-testid="panel-editor-v2-description"
+						value={spec.display?.description ?? ''}
+						placeholder="Add a description"
+						rows={3}
+						onChange={(e): void => setDisplayField('description', e.target.value)}
+					/>
+				</div>
+			</div>
+
+			{sections.length > 0 && (
+				<>
+					<div className={styles.divider} />
+					<span className={styles.eyebrow}>Display</span>
+					<div className={styles.sections}>
+						{sections.map((config) => (
+							<SectionSlot
+								key={config.kind}
+								config={config}
+								spec={spec}
+								onChangeSpec={onChangeSpec}
+								legendSeries={legendSeries}
+							/>
+						))}
+					</div>
+				</>
+			)}
+		</div>
+	);
+}
+
+export default ConfigPane;

frontend/src/pages/DashboardPageV2/DashboardContainer/PanelEditor/ConfigPane/SectionSlot/SectionSlot.tsx

@@ -0,0 +1,65 @@
+import type { DashboardtypesPanelSpecDTO } from 'api/generated/services/sigNoz.schemas';
+import {
+	SECTION_METADATA,
+	type SectionConfig,
+} from 'pages/DashboardPageV2/DashboardContainer/Panels/types/sections';
+
+import type { LegendSeries } from '../../useLegendSeries';
+import { resolveSectionEditor } from '../sectionRegistry';
+import SettingsSection from '../SettingsSection/SettingsSection';
+
+interface SectionSlotProps {
+	config: SectionConfig;
+	spec: DashboardtypesPanelSpecDTO;
+	onChangeSpec: (next: DashboardtypesPanelSpecDTO) => void;
+	/** Resolved series, forwarded to editors that need them (legend colors). */
+	legendSeries: LegendSeries[];
+}
+
+/**
+ * Renders one configuration section: its collapsible wrapper plus the registered editor
+ * for `config.kind`, wired through the registry's spec lens. Renders nothing when the
+ * kind has no editor yet (sections roll out incrementally), so a kind can declare a
+ * section before its editor exists.
+ */
+function SectionSlot({
+	config,
+	spec,
+	onChangeSpec,
+	legendSeries,
+}: SectionSlotProps): JSX.Element | null {
+	// A kind can hide a section based on current spec state (e.g. Histogram legend once
+	// queries are merged) — skip it before resolving the editor.
+	if (config.isHidden?.(spec)) {
+		return null;
+	}
+
+	const editor = resolveSectionEditor(config.kind);
+	if (!editor) {
+		return null;
+	}
+
+	const { title, icon: Icon } = SECTION_METADATA[config.kind];
+	const { Component, read, write } = editor;
+	// Atomic sections carry no `controls`; controlled ones do.
+	const controls = 'controls' in config ? config.controls : undefined;
+	// The panel's formatting unit, forwarded to editors that scope to it (thresholds
+	// restrict their unit picker to this unit's category, as in V1).
+	const yAxisUnit = (
+		spec.plugin?.spec as { formatting?: { unit?: string } } | undefined
+	)?.formatting?.unit;
+
+	return (
+		<SettingsSection title={title} icon={<Icon size={15} />}>
+			<Component
+				value={read(spec)}
+				controls={controls}
+				onChange={(next): void => onChangeSpec(write(spec, next))}
+				legendSeries={legendSeries}
+				yAxisUnit={yAxisUnit}
+			/>
+		</SettingsSection>
+	);
+}
+
+export default SectionSlot;

frontend/src/pages/DashboardPageV2/DashboardContainer/PanelEditor/ConfigPane/SettingsSection/SettingsSection.module.scss

@@ -0,0 +1,58 @@
+.section {
+	border-bottom: 1px solid var(--l2-border);
+}
+
+.header {
+	display: flex;
+	align-items: center;
+	gap: 11px;
+	width: 100%;
+	height: 44px;
+	padding: 0 4px;
+	border: none;
+	background: transparent;
+	cursor: pointer;
+	color: var(--text-vanilla-100);
+	border-radius: 4px;
+}
+
+.iconTile {
+	display: grid;
+	place-items: center;
+	width: 27px;
+	height: 27px;
+	flex: none;
+	border-radius: 3px;
+	background: var(--l3-background);
+	color: var(--text-vanilla-400);
+	transition: all 0.15s ease;
+}
+
+.iconTileOpen {
+	background: color-mix(in srgb, var(--bg-robin-400) 14%, transparent);
+	color: var(--bg-robin-400);
+}
+
+.title {
+	flex: 1;
+	text-align: left;
+	font-weight: 600;
+	color: var(--l2-foreground);
+}
+
+.chevron {
+	flex: none;
+	color: var(--l2-border);
+	transition: transform 0.15s ease;
+
+	&.open {
+		transform: rotate(180deg);
+	}
+}
+
+.body {
+	display: flex;
+	flex-direction: column;
+	gap: 16px;
+	padding: 2px 0 18px;
+}

frontend/src/pages/DashboardPageV2/DashboardContainer/PanelEditor/ConfigPane/SettingsSection/SettingsSection.tsx

@@ -0,0 +1,54 @@
+import { type ReactNode, useState } from 'react';
+import { ChevronDown } from '@signozhq/icons';
+import { Typography } from '@signozhq/ui/typography';
+import cx from 'classnames';
+
+import styles from './SettingsSection.module.scss';
+
+interface SettingsSectionProps {
+	title: string;
+	icon?: ReactNode;
+	defaultOpen?: boolean;
+	children: ReactNode;
+}
+
+/**
+ * Collapsible container for one configuration section in the V2 panel editor's
+ * ConfigPane. Header shows an icon tile (accented when expanded), the title, and a
+ * rotating chevron; sections are separated by hairline dividers (no surrounding boxes),
+ * matching the Configure-panel design.
+ */
+function SettingsSection({
+	title,
+	icon,
+	defaultOpen = false,
+	children,
+}: SettingsSectionProps): JSX.Element {
+	const [isOpen, setIsOpen] = useState(defaultOpen);
+
+	return (
+		<section className={styles.section}>
+			<button
+				type="button"
+				className={styles.header}
+				aria-expanded={isOpen}
+				data-testid={`config-section-${title}`}
+				onClick={(): void => setIsOpen((prev) => !prev)}
+			>
+				{icon && (
+					<span className={cx(styles.iconTile, { [styles.iconTileOpen]: isOpen })}>
+						{icon}
+					</span>
+				)}
+				<Typography.Text className={styles.title}>{title}</Typography.Text>
+				<ChevronDown
+					size={15}
+					className={cx(styles.chevron, { [styles.open]: isOpen })}
+				/>
+			</button>
+			{isOpen && <div className={styles.body}>{children}</div>}
+		</section>
+	);
+}
+
+export default SettingsSection;

frontend/src/pages/DashboardPageV2/DashboardContainer/PanelEditor/ConfigPane/controls/ConfigSegmented/ConfigSegmented.module.scss

@@ -0,0 +1,10 @@
+.group {
+	width: min(350px, 100%);
+}
+
+.segment {
+	display: inline-flex;
+	align-items: center;
+	gap: 6px;
+	white-space: nowrap;
+}

frontend/src/pages/DashboardPageV2/DashboardContainer/PanelEditor/ConfigPane/controls/ConfigSegmented/ConfigSegmented.tsx

@@ -0,0 +1,59 @@
+import { ToggleGroupSimple } from '@signozhq/ui/toggle-group';
+
+import { SegmentIcon, type SegmentIconName } from '../segmentIcons';
+
+import styles from './ConfigSegmented.module.scss';
+
+export interface ConfigSegmentedItem {
+	value: string;
+	label: string;
+	icon?: SegmentIconName;
+}
+
+interface ConfigSegmentedProps {
+	testId: string;
+	value: string | undefined;
+	items: ConfigSegmentedItem[];
+	onChange: (value: string) => void;
+}
+
+/**
+ * Inline segmented control for short option sets in the config pane (line style, fill
+ * mode, axis scale, legend position). Each segment carries an optional muted glyph that
+ * brightens with the selected state (it inherits the toggle's `currentColor`). Built on
+ * the Periscope ToggleGroup so it stays theme-faithful.
+ */
+function ConfigSegmented({
+	testId,
+	value,
+	items,
+	onChange,
+}: ConfigSegmentedProps): JSX.Element {
+	return (
+		<ToggleGroupSimple
+			type="single"
+			testId={testId}
+			className={styles.group}
+			value={value}
+			items={items.map((item) => ({
+				value: item.value,
+				'aria-label': item.label,
+				label: (
+					<span className={styles.segment}>
+						{item.icon && <SegmentIcon name={item.icon} />}
+						{item.label}
+					</span>
+				),
+			}))}
+			// Single toggle-groups emit '' when the active segment is re-clicked; ignore that
+			// so a required choice (e.g. scale, position) can't be cleared to an empty value.
+			onChange={(next: string): void => {
+				if (next) {
+					onChange(next);
+				}
+			}}
+		/>
+	);
+}
+
+export default ConfigSegmented;

frontend/src/pages/DashboardPageV2/DashboardContainer/PanelEditor/ConfigPane/controls/ConfigSelect/ConfigSelect.module.scss

@@ -0,0 +1,13 @@
+// Match the dropdown width to its trigger. Radix always exposes the trigger width as
+// `--radix-select-trigger-width` on the popper content (mirrors --radix-popper-anchor-width),
+// so binding `width` to it keeps the menu the same width as the closed select.
+.content {
+	width: var(--radix-select-trigger-width);
+	min-width: var(--radix-select-trigger-width);
+}
+
+.item {
+	display: inline-flex;
+	align-items: center;
+	gap: 9px;
+}

frontend/src/pages/DashboardPageV2/DashboardContainer/PanelEditor/ConfigPane/controls/ConfigSelect/ConfigSelect.tsx

@@ -0,0 +1,67 @@
+import {
+	Select,
+	SelectContent,
+	SelectItem,
+	SelectTrigger,
+} from '@signozhq/ui/select';
+
+import { SegmentIcon, type SegmentIconName } from '../segmentIcons';
+
+import styles from './ConfigSelect.module.scss';
+
+export interface ConfigSelectItem {
+	value: string;
+	label: string;
+	icon?: SegmentIconName;
+}
+
+interface ConfigSelectProps {
+	testId: string;
+	value: string | undefined;
+	placeholder?: string;
+	items: ConfigSelectItem[];
+	onChange: (value: string) => void;
+}
+
+/**
+ * Single-select dropdown for the panel editor's config sections. Renders the menu
+ * inside the editor overlay (`withPortal={false}`) so it isn't trapped behind the
+ * overlay — Radix positions it with strategy:"fixed" so the surrounding `overflow:auto`
+ * pane doesn't clip it — and sizes the menu to the trigger width.
+ */
+function ConfigSelect({
+	testId,
+	value,
+	placeholder,
+	items,
+	onChange,
+}: ConfigSelectProps): JSX.Element {
+	return (
+		<Select
+			value={value}
+			onChange={(next): void => {
+				if (typeof next === 'string') {
+					onChange(next);
+				}
+			}}
+		>
+			<SelectTrigger testId={testId} placeholder={placeholder} />
+			<SelectContent withPortal={false} className={styles.content}>
+				{items.map((item) => (
+					<SelectItem key={item.value} value={item.value}>
+						{item.icon ? (
+							<span className={styles.item}>
+								<SegmentIcon name={item.icon} />
+								{item.label}
+							</span>
+						) : (
+							item.label
+						)}
+					</SelectItem>
+				))}
+			</SelectContent>
+		</Select>
+	);
+}
+
+export default ConfigSelect;

frontend/src/pages/DashboardPageV2/DashboardContainer/PanelEditor/ConfigPane/controls/ConfigSwitch/ConfigSwitch.module.scss

@@ -0,0 +1,30 @@
+.card {
+	display: flex;
+	align-items: center;
+	justify-content: space-between;
+	gap: 12px;
+	padding: 12px 14px;
+	border: 1px solid var(--l2-border);
+	border-radius: 6px;
+	background: var(--l2-background);
+}
+
+.text {
+	display: flex;
+	flex-direction: column;
+	gap: 2px;
+	min-width: 0;
+}
+
+.title {
+	font-size: 12px;
+	font-weight: 600;
+	letter-spacing: 0.06em;
+	text-transform: uppercase;
+	color: var(--l2-foreground);
+}
+
+.description {
+	font-size: 12px;
+	color: var(--l3-foreground);
+}

frontend/src/pages/DashboardPageV2/DashboardContainer/PanelEditor/ConfigPane/controls/ConfigSwitch/ConfigSwitch.tsx

@@ -0,0 +1,43 @@
+import { Switch } from '@signozhq/ui/switch';
+import { Typography } from '@signozhq/ui/typography';
+
+import styles from './ConfigSwitch.module.scss';
+
+interface ConfigSwitchProps {
+	testId: string;
+	/** Shown uppercased as the card title. */
+	title: string;
+	/** Optional helper line under the title. */
+	description?: string;
+	value: boolean;
+	onChange: (checked: boolean) => void;
+}
+
+/**
+ * Boolean toggle rendered as a bordered card: an uppercase title with an optional
+ * description on the left and a Switch on the right. The standard presentation for
+ * on/off panel-config controls (e.g. "Show points").
+ */
+function ConfigSwitch({
+	testId,
+	title,
+	description,
+	value,
+	onChange,
+}: ConfigSwitchProps): JSX.Element {
+	return (
+		<div className={styles.card}>
+			<div className={styles.text}>
+				<span className={styles.title}>{title}</span>
+				{description && (
+					<Typography.Text className={styles.description}>
+						{description}
+					</Typography.Text>
+				)}
+			</div>
+			<Switch testId={testId} value={value} onChange={onChange} />
+		</div>
+	);
+}
+
+export default ConfigSwitch;

frontend/src/pages/DashboardPageV2/DashboardContainer/PanelEditor/ConfigPane/controls/LegendColors/LegendColorRow.tsx

@@ -0,0 +1,62 @@
+import { ColorPicker } from 'antd';
+import { Typography } from '@signozhq/ui/typography';
+
+import styles from './LegendColors.module.scss';
+
+interface LegendColorRowProps {
+	label: string;
+	/** Effective color shown in the swatch (override or auto). */
+	color: string;
+	/** True when the series has an explicit override (enables Reset). */
+	isOverridden: boolean;
+	onChange: (hex: string) => void;
+	onReset: () => void;
+}
+
+/**
+ * One series row in the legend-colors list: an antd ColorPicker swatch trigger, the
+ * series label, and a Reset action shown only when the color is overridden. `onChange`
+ * fires on commit (`onChangeComplete`) so dragging the picker doesn't churn the spec.
+ */
+function LegendColorRow({
+	label,
+	color,
+	isOverridden,
+	onChange,
+	onReset,
+}: LegendColorRowProps): JSX.Element {
+	return (
+		<div className={styles.row}>
+			<ColorPicker
+				value={color}
+				size="small"
+				showText={false}
+				trigger="click"
+				onChangeComplete={(next): void => onChange(next.toHexString())}
+			>
+				<button
+					type="button"
+					className={styles.trigger}
+					data-testid={`legend-color-${label}`}
+				>
+					<span className={styles.swatch} style={{ backgroundColor: color }} />
+					<Typography.Text className={styles.label} title={label}>
+						{label}
+					</Typography.Text>
+				</button>
+			</ColorPicker>
+			{isOverridden && (
+				<button
+					type="button"
+					className={styles.reset}
+					onClick={onReset}
+					data-testid={`legend-color-reset-${label}`}
+				>
+					Reset
+				</button>
+			)}
+		</div>
+	);
+}
+
+export default LegendColorRow;

frontend/src/pages/DashboardPageV2/DashboardContainer/PanelEditor/ConfigPane/controls/LegendColors/LegendColors.module.scss

@@ -0,0 +1,61 @@
+.container {
+	display: flex;
+	flex-direction: column;
+	gap: 8px;
+}
+
+.list {
+	width: 100%;
+}
+
+.row {
+	display: flex;
+	align-items: center;
+	gap: 8px;
+	min-width: 0;
+	height: 34px;
+}
+
+.trigger {
+	display: flex;
+	flex: 1;
+	align-items: center;
+	gap: 10px;
+	min-width: 0;
+	padding: 0;
+	border: none;
+	background: transparent;
+	cursor: pointer;
+	text-align: left;
+}
+
+.swatch {
+	width: 18px;
+	height: 18px;
+	flex: none;
+	border: 1px solid var(--l2-border);
+	border-radius: 4px;
+}
+
+.label {
+	overflow: hidden;
+	font-size: 12px;
+	color: var(--text-vanilla-400);
+	white-space: nowrap;
+	text-overflow: ellipsis;
+}
+
+.reset {
+	flex: none;
+	padding: 0;
+	border: none;
+	background: transparent;
+	color: var(--bg-robin-400);
+	font-size: 12px;
+	cursor: pointer;
+}
+
+.empty {
+	font-size: 12px;
+	color: var(--text-vanilla-400);
+}

frontend/src/pages/DashboardPageV2/DashboardContainer/PanelEditor/ConfigPane/controls/LegendColors/LegendColors.tsx

@@ -0,0 +1,83 @@
+import { useState } from 'react';
+import { Search } from '@signozhq/icons';
+import { Input } from '@signozhq/ui/input';
+import { Typography } from '@signozhq/ui/typography';
+import type { DashboardtypesLegendDTOCustomColors } from 'api/generated/services/sigNoz.schemas';
+import { Virtuoso } from 'react-virtuoso';
+
+import type { LegendSeries } from '../../../useLegendSeries';
+import LegendColorRow from './LegendColorRow';
+import {
+	clearSeriesColor,
+	filterLegendSeries,
+	resolveSeriesColor,
+	setSeriesColor,
+} from './legendColors.utils';
+
+import styles from './LegendColors.module.scss';
+
+interface LegendColorsProps {
+	/** Panel's resolved series (from the shared preview query). */
+	series: LegendSeries[];
+	value: DashboardtypesLegendDTOCustomColors | undefined;
+	onChange: (next: Record<string, string>) => void;
+}
+
+/**
+ * Per-series color overrides for the legend: a searchable, virtualized list of the
+ * panel's resolved series, each with an antd ColorPicker swatch. Picking a color writes
+ * `{ [seriesLabel]: hex }` into `legend.customColors` — the same label the chart keys its
+ * color lookup on; Reset drops the override. Virtualized so panels with hundreds of
+ * series stay responsive. Until the query produces series, shows a hint.
+ */
+function LegendColors({
+	series,
+	value,
+	onChange,
+}: LegendColorsProps): JSX.Element {
+	const [query, setQuery] = useState('');
+
+	if (series.length === 0) {
+		return (
+			<Typography.Text className={styles.empty}>
+				Run the panel to customise series colors.
+			</Typography.Text>
+		);
+	}
+
+	const filtered = filterLegendSeries(series, query);
+
+	return (
+		<div className={styles.container} data-testid="panel-editor-v2-legend-colors">
+			<Input
+				testId="panel-editor-v2-legend-search"
+				placeholder="Search series…"
+				value={query}
+				prefix={<Search size={14} />}
+				onChange={(e): void => setQuery(e.target.value)}
+			/>
+			{filtered.length === 0 ? (
+				<Typography.Text className={styles.empty}>
+					No series match “{query}”.
+				</Typography.Text>
+			) : (
+				<Virtuoso
+					className={styles.list}
+					style={{ height: Math.min(filtered.length * 34, 240) }}
+					data={filtered}
+					itemContent={(_, s): JSX.Element => (
+						<LegendColorRow
+							label={s.label}
+							color={resolveSeriesColor(value, s.label, s.defaultColor)}
+							isOverridden={value?.[s.label] !== undefined}
+							onChange={(hex): void => onChange(setSeriesColor(value, s.label, hex))}
+							onReset={(): void => onChange(clearSeriesColor(value, s.label))}
+						/>
+					)}
+				/>
+			)}
+		</div>
+	);
+}
+
+export default LegendColors;

frontend/src/pages/DashboardPageV2/DashboardContainer/PanelEditor/ConfigPane/controls/LegendColors/__tests__/LegendColors.test.tsx

@@ -0,0 +1,42 @@
+import { fireEvent, render, screen } from '@testing-library/react';
+
+import type { LegendSeries } from '../../../../useLegendSeries';
+import LegendColors from '../LegendColors';
+
+const SERIES: LegendSeries[] = [
+	{ label: 'frontend', defaultColor: '#ff0000' },
+	{ label: 'cartservice', defaultColor: '#00ff00' },
+];
+
+describe('LegendColors', () => {
+	it('shows a hint when there are no resolved series', () => {
+		render(<LegendColors series={[]} value={undefined} onChange={jest.fn()} />);
+
+		expect(
+			screen.queryByTestId('panel-editor-v2-legend-colors'),
+		).not.toBeInTheDocument();
+		expect(screen.getByText(/run the panel/i)).toBeInTheDocument();
+	});
+
+	it('renders the search box once series are present', () => {
+		render(
+			<LegendColors series={SERIES} value={undefined} onChange={jest.fn()} />,
+		);
+
+		expect(
+			screen.getByTestId('panel-editor-v2-legend-search'),
+		).toBeInTheDocument();
+	});
+
+	it('shows a no-match message when the search filters everything out', () => {
+		render(
+			<LegendColors series={SERIES} value={undefined} onChange={jest.fn()} />,
+		);
+
+		fireEvent.change(screen.getByTestId('panel-editor-v2-legend-search'), {
+			target: { value: 'zzz' },
+		});
+
+		expect(screen.getByText(/no series match/i)).toBeInTheDocument();
+	});
+});

frontend/src/pages/DashboardPageV2/DashboardContainer/PanelEditor/ConfigPane/controls/LegendColors/__tests__/legendColors.utils.test.ts

@@ -0,0 +1,63 @@
+import type { LegendSeries } from '../../../../useLegendSeries';
+import {
+	clearSeriesColor,
+	filterLegendSeries,
+	resolveSeriesColor,
+	setSeriesColor,
+} from '../legendColors.utils';
+
+const SERIES: LegendSeries[] = [
+	{ label: 'frontend', defaultColor: '#ff0000' },
+	{ label: 'cartservice', defaultColor: '#00ff00' },
+	{ label: 'frontendproxy', defaultColor: '#0000ff' },
+];
+
+describe('legendColors.utils', () => {
+	describe('filterLegendSeries', () => {
+		it('returns all series for an empty/whitespace query', () => {
+			expect(filterLegendSeries(SERIES, '')).toHaveLength(3);
+			expect(filterLegendSeries(SERIES, '   ')).toHaveLength(3);
+		});
+
+		it('matches case-insensitive substrings', () => {
+			expect(
+				filterLegendSeries(SERIES, 'FRONT').map((s) => s.label),
+			).toStrictEqual(['frontend', 'frontendproxy']);
+			expect(filterLegendSeries(SERIES, 'cart')).toHaveLength(1);
+			expect(filterLegendSeries(SERIES, 'zzz')).toHaveLength(0);
+		});
+	});
+
+	describe('resolveSeriesColor', () => {
+		it('prefers the override, falling back to the default', () => {
+			expect(resolveSeriesColor({ frontend: '#111' }, 'frontend', '#ff0000')).toBe(
+				'#111',
+			);
+			expect(resolveSeriesColor(undefined, 'frontend', '#ff0000')).toBe('#ff0000');
+			expect(resolveSeriesColor(null, 'frontend', '#ff0000')).toBe('#ff0000');
+		});
+	});
+
+	describe('setSeriesColor', () => {
+		it('adds/overwrites a label without mutating the input', () => {
+			const value = { frontend: '#111' };
+			const next = setSeriesColor(value, 'cartservice', '#222');
+			expect(next).toStrictEqual({ frontend: '#111', cartservice: '#222' });
+			expect(value).toStrictEqual({ frontend: '#111' });
+		});
+
+		it('handles null/undefined base', () => {
+			expect(setSeriesColor(undefined, 'a', '#1')).toStrictEqual({ a: '#1' });
+			expect(setSeriesColor(null, 'a', '#1')).toStrictEqual({ a: '#1' });
+		});
+	});
+
+	describe('clearSeriesColor', () => {
+		it('removes a label without mutating the input', () => {
+			const value = { frontend: '#111', cartservice: '#222' };
+			const next = clearSeriesColor(value, 'frontend');
+			expect(next).toStrictEqual({ cartservice: '#222' });
+			expect(value).toStrictEqual({ frontend: '#111', cartservice: '#222' });
+		});
+	});
+});

frontend/src/pages/DashboardPageV2/DashboardContainer/PanelEditor/ConfigPane/controls/LegendColors/legendColors.utils.ts

@@ -0,0 +1,43 @@
+import type { DashboardtypesLegendDTOCustomColors } from 'api/generated/services/sigNoz.schemas';
+
+import type { LegendSeries } from '../../../useLegendSeries';
+
+/** Case-insensitive substring filter over series labels. Empty query → all series. */
+export function filterLegendSeries(
+	series: LegendSeries[],
+	query: string,
+): LegendSeries[] {
+	const q = query.trim().toLowerCase();
+	if (!q) {
+		return series;
+	}
+	return series.filter((s) => s.label.toLowerCase().includes(q));
+}
+
+/** The effective color for a series: the override if set, else its auto color. */
+export function resolveSeriesColor(
+	value: DashboardtypesLegendDTOCustomColors | undefined,
+	label: string,
+	defaultColor: string,
+): string {
+	return value?.[label] ?? defaultColor;
+}
+
+/** Set an override for `label`, returning a new customColors record. */
+export function setSeriesColor(
+	value: DashboardtypesLegendDTOCustomColors | undefined,
+	label: string,
+	hex: string,
+): Record<string, string> {
+	return { ...value, [label]: hex };
+}
+
+/** Drop the override for `label` (revert to the auto color), returning a new record. */
+export function clearSeriesColor(
+	value: DashboardtypesLegendDTOCustomColors | undefined,
+	label: string,
+): Record<string, string> {
+	const next = { ...value };
+	delete next[label];
+	return next;
+}

frontend/src/pages/DashboardPageV2/DashboardContainer/PanelEditor/ConfigPane/controls/segmentIcons.tsx

@@ -0,0 +1,145 @@
+/**
+ * Small glyph icons for the panel-editor segmented/select controls, ported from the
+ * Configure-panel design. They render at 14px and inherit `currentColor` so the
+ * surrounding control can dim them when unselected and brighten them when active.
+ */
+export type SegmentIconName =
+	| 'solid-line'
+	| 'dashed-line'
+	| 'fill-none'
+	| 'fill-solid'
+	| 'fill-gradient'
+	| 'pos-bottom'
+	| 'pos-right'
+	| 'scale-linear'
+	| 'scale-log'
+	| 'interp-linear'
+	| 'interp-spline'
+	| 'interp-step-before'
+	| 'interp-step-after';
+
+function Svg({ children }: { children: React.ReactNode }): JSX.Element {
+	return (
+		<svg
+			width={14}
+			height={14}
+			viewBox="0 0 16 16"
+			fill="none"
+			stroke="currentColor"
+			strokeWidth={1.5}
+			strokeLinecap="round"
+			strokeLinejoin="round"
+			style={{ flex: 'none' }}
+			aria-hidden
+		>
+			{children}
+		</svg>
+	);
+}
+
+const FILLED = { fill: 'currentColor', stroke: 'none' } as const;
+
+export function SegmentIcon({
+	name,
+}: {
+	name: SegmentIconName;
+}): JSX.Element | null {
+	switch (name) {
+		case 'solid-line':
+			return (
+				<Svg>
+					<path d="M2 8 H14" />
+				</Svg>
+			);
+		case 'dashed-line':
+			return (
+				<Svg>
+					<path d="M2 8 H4.5" />
+					<path d="M6.75 8 H9.25" />
+					<path d="M11.5 8 H14" />
+				</Svg>
+			);
+		case 'fill-none':
+			return (
+				<Svg>
+					<path d="M2 11 L6 6 L10 9 L14 5" />
+				</Svg>
+			);
+		case 'fill-solid':
+			return (
+				<Svg>
+					<path
+						d="M2 10.5 L6 5.5 L10 8.5 L14 4.5 V13.5 H2 Z"
+						fill="currentColor"
+						fillOpacity={0.85}
+						stroke="none"
+					/>
+					<path d="M2 10.5 L6 5.5 L10 8.5 L14 4.5" />
+				</Svg>
+			);
+		case 'fill-gradient':
+			return (
+				<Svg>
+					<path
+						d="M2 10.5 L6 5.5 L10 8.5 L14 4.5 V13.5 H2 Z"
+						fill="currentColor"
+						fillOpacity={0.3}
+						stroke="none"
+					/>
+					<path d="M2 10.5 L6 5.5 L10 8.5 L14 4.5" />
+				</Svg>
+			);
+		case 'pos-bottom':
+			return (
+				<Svg>
+					<rect x={2} y={2.5} width={12} height={9} rx={1.2} />
+					<rect x={2} y={9} width={12} height={2.5} {...FILLED} />
+				</Svg>
+			);
+		case 'pos-right':
+			return (
+				<Svg>
+					<rect x={2} y={2.5} width={12} height={9} rx={1.2} />
+					<rect x={10.5} y={2.5} width={3.5} height={9} {...FILLED} />
+				</Svg>
+			);
+		case 'scale-linear':
+			return (
+				<Svg>
+					<path d="M2.5 13 L13.5 3" />
+				</Svg>
+			);
+		case 'scale-log':
+			return (
+				<Svg>
+					<path d="M2.5 13 C5 13, 8 4.5, 13.5 3" />
+				</Svg>
+			);
+		case 'interp-linear':
+			return (
+				<Svg>
+					<path d="M2 12 L6 5 L10 9 L14 4" />
+				</Svg>
+			);
+		case 'interp-spline':
+			return (
+				<Svg>
+					<path d="M2 12 C5 3, 9 3, 14 8" />
+				</Svg>
+			);
+		case 'interp-step-before':
+			return (
+				<Svg>
+					<path d="M2 6 H6 V10 H10 V4.5 H14" />
+				</Svg>
+			);
+		case 'interp-step-after':
+			return (
+				<Svg>
+					<path d="M2 10 H6 V5 H10 V9.5 H14" />
+				</Svg>
+			);
+		default:
+			return null;
+	}
+}

frontend/src/pages/DashboardPageV2/DashboardContainer/PanelEditor/ConfigPane/sectionRegistry.tsx

@@ -0,0 +1,173 @@
+import type { ComponentType } from 'react';
+import type {
+	DashboardLinkDTO,
+	DashboardtypesAxesDTO,
+	DashboardtypesBarChartVisualizationDTO,
+	DashboardtypesComparisonThresholdDTO,
+	DashboardtypesHistogramBucketsDTO,
+	DashboardtypesLegendDTO,
+	DashboardtypesPanelFormattingDTO,
+	DashboardtypesPanelSpecDTO,
+	DashboardtypesThresholdWithLabelDTO,
+	DashboardtypesTimeSeriesChartAppearanceDTO,
+} from 'api/generated/services/sigNoz.schemas';
+import type {
+	SectionEditorProps,
+	SectionKind,
+	SectionSpecMap,
+} from 'pages/DashboardPageV2/DashboardContainer/Panels/types/sections';
+
+import AxesSection from './sections/AxesSection/AxesSection';
+import BucketsSection from './sections/BucketsSection/BucketsSection';
+import ChartAppearanceSection from './sections/ChartAppearanceSection/ChartAppearanceSection';
+import ComparisonThresholdsSection from './sections/ComparisonThresholdsSection/ComparisonThresholdsSection';
+import ContextLinksSection from './sections/ContextLinksSection/ContextLinksSection';
+import FormattingSection from './sections/FormattingSection/FormattingSection';
+import LegendSection from './sections/LegendSection/LegendSection';
+import ThresholdsSection from './sections/ThresholdsSection/ThresholdsSection';
+import VisualizationSection from './sections/VisualizationSection/VisualizationSection';
+
+type PanelSpec = DashboardtypesPanelSpecDTO;
+
+/**
+ * Pairs a section kind with its editor component and a typed lens into the panel spec.
+ * The lens reads/writes over the WHOLE panel spec, so a section can target either the
+ * plugin spec (`spec.plugin.spec.<key>`) or a panel-level field (e.g. `spec.links`).
+ */
+export interface SectionDescriptor<K extends SectionKind> {
+	Component: ComponentType<SectionEditorProps<K>>;
+	read: (spec: PanelSpec) => SectionSpecMap[K] | undefined;
+	write: (spec: PanelSpec, value: SectionSpecMap[K]) => PanelSpec;
+}
+
+// The plugin spec is a discriminated union over panel kinds; reading/writing a shared
+// slice (formatting, axes, …) by key is the one place the union must be narrowed. The
+// helper concentrates that cast so the registry entries stay declarative.
+type PluginSpecSlice = Partial<Record<string, unknown>>;
+
+function readPluginSlice<T>(spec: PanelSpec, key: string): T | undefined {
+	return (spec.plugin?.spec as PluginSpecSlice | undefined)?.[key] as
+		| T
+		| undefined;
+}
+
+function writePluginSlice(
+	spec: PanelSpec,
+	key: string,
+	value: unknown,
+): PanelSpec {
+	return {
+		...spec,
+		plugin: {
+			...spec.plugin,
+			spec: { ...(spec.plugin?.spec as PluginSpecSlice), [key]: value },
+		},
+	} as PanelSpec;
+}
+
+/**
+ * Registry of section editors. Partial by design: only sections with a built editor
+ * appear here, so ConfigPane renders exactly those and silently skips the rest. Adding
+ * a section editor = one entry here + one component file.
+ */
+export const SECTION_REGISTRY: {
+	[K in SectionKind]?: SectionDescriptor<K>;
+} = {
+	formatting: {
+		Component: FormattingSection,
+		read: (spec): DashboardtypesPanelFormattingDTO | undefined =>
+			readPluginSlice<DashboardtypesPanelFormattingDTO>(spec, 'formatting'),
+		write: (spec, formatting): PanelSpec =>
+			writePluginSlice(spec, 'formatting', formatting),
+	},
+	axes: {
+		Component: AxesSection,
+		read: (spec): DashboardtypesAxesDTO | undefined =>
+			readPluginSlice<DashboardtypesAxesDTO>(spec, 'axes'),
+		write: (spec, axes): PanelSpec => writePluginSlice(spec, 'axes', axes),
+	},
+	legend: {
+		Component: LegendSection,
+		read: (spec): DashboardtypesLegendDTO | undefined =>
+			readPluginSlice<DashboardtypesLegendDTO>(spec, 'legend'),
+		write: (spec, legend): PanelSpec => writePluginSlice(spec, 'legend', legend),
+	},
+	chartAppearance: {
+		Component: ChartAppearanceSection,
+		read: (spec): DashboardtypesTimeSeriesChartAppearanceDTO | undefined =>
+			readPluginSlice<DashboardtypesTimeSeriesChartAppearanceDTO>(
+				spec,
+				'chartAppearance',
+			),
+		write: (spec, chartAppearance): PanelSpec =>
+			writePluginSlice(spec, 'chartAppearance', chartAppearance),
+	},
+	visualization: {
+		Component: VisualizationSection,
+		read: (spec): DashboardtypesBarChartVisualizationDTO | undefined =>
+			readPluginSlice<DashboardtypesBarChartVisualizationDTO>(
+				spec,
+				'visualization',
+			),
+		write: (spec, visualization): PanelSpec =>
+			writePluginSlice(spec, 'visualization', visualization),
+	},
+	buckets: {
+		Component: BucketsSection,
+		read: (spec): DashboardtypesHistogramBucketsDTO | undefined =>
+			readPluginSlice<DashboardtypesHistogramBucketsDTO>(spec, 'histogramBuckets'),
+		write: (spec, buckets): PanelSpec =>
+			writePluginSlice(spec, 'histogramBuckets', buckets),
+	},
+	contextLinks: {
+		Component: ContextLinksSection,
+		// Panel-level slice (spec.links), not under the plugin spec — no cast needed.
+		read: (spec): DashboardLinkDTO[] | undefined => spec.links,
+		write: (spec, links): PanelSpec => ({ ...spec, links }),
+	},
+	thresholds: {
+		Component: ThresholdsSection,
+		read: (spec): DashboardtypesThresholdWithLabelDTO[] | undefined =>
+			readPluginSlice<DashboardtypesThresholdWithLabelDTO[]>(spec, 'thresholds'),
+		write: (spec, thresholds): PanelSpec =>
+			writePluginSlice(spec, 'thresholds', thresholds),
+	},
+	// Same plugin.spec.thresholds key, but Number's comparison-operator element shape.
+	comparisonThresholds: {
+		Component: ComparisonThresholdsSection,
+		read: (spec): DashboardtypesComparisonThresholdDTO[] | undefined =>
+			readPluginSlice<DashboardtypesComparisonThresholdDTO[]>(spec, 'thresholds'),
+		write: (spec, thresholds): PanelSpec =>
+			writePluginSlice(spec, 'thresholds', thresholds),
+	},
+};
+
+/**
+ * A section descriptor with the kind correlation erased. `SECTION_REGISTRY[kind]` and a
+ * `SectionConfig` are both unions keyed by the same `kind`, but TS can't prove the lookup
+ * and the config refer to the same member — the classic correlated-union limitation. The
+ * resolver below narrows once here (the single localized cast), so render sites compose
+ * `read` → `Component` → `write` without any further casts.
+ */
+export interface ErasedSectionDescriptor {
+	Component: ComponentType<{
+		value: unknown;
+		controls?: unknown;
+		onChange: (next: unknown) => void;
+		// Forwarded to every editor; only sections that need the panel's resolved series
+		// (legend colors) read it. Optional so editors can ignore it.
+		legendSeries?: unknown;
+		// The panel's formatting unit; read by editors that scope to it (thresholds).
+		yAxisUnit?: unknown;
+	}>;
+	read: (spec: PanelSpec) => unknown;
+	write: (spec: PanelSpec, value: unknown) => PanelSpec;
+}
+
+export function resolveSectionEditor(
+	kind: SectionKind,
+): ErasedSectionDescriptor | undefined {
+	return SECTION_REGISTRY[kind] as unknown as
+		| ErasedSectionDescriptor
+		| undefined;
+}

frontend/src/pages/DashboardPageV2/DashboardContainer/PanelEditor/ConfigPane/sections/AxesSection/AxesSection.module.scss

@@ -0,0 +1,11 @@
+.bounds {
+	display: flex;
+	gap: 8px;
+}
+
+.field {
+	display: flex;
+	flex: 1;
+	flex-direction: column;
+	gap: 8px;
+}

frontend/src/pages/DashboardPageV2/DashboardContainer/PanelEditor/ConfigPane/sections/AxesSection/AxesSection.tsx

@@ -0,0 +1,80 @@
+import type { ChangeEvent } from 'react';
+import { Input } from '@signozhq/ui/input';
+import { Typography } from '@signozhq/ui/typography';
+import type { SectionEditorProps } from 'pages/DashboardPageV2/DashboardContainer/Panels/types/sections';
+
+import ConfigSegmented from '../../controls/ConfigSegmented/ConfigSegmented';
+
+import styles from './AxesSection.module.scss';
+
+type SoftBound = 'softMin' | 'softMax';
+
+const SCALE_OPTIONS = [
+	{ value: 'linear', label: 'Linear', icon: 'scale-linear' as const },
+	{ value: 'log', label: 'Log', icon: 'scale-log' as const },
+];
+
+/**
+ * Edits the `axes` slice of a panel spec: soft Y-axis min/max bounds and the
+ * linear/logarithmic scale toggle. Each control is gated by its `controls` flag.
+ */
+function AxesSection({
+	value,
+	controls,
+	onChange,
+}: SectionEditorProps<'axes'>): JSX.Element {
+	// An empty field clears the bound (null); otherwise parse to a number, ignoring
+	// transient non-numeric input (e.g. a lone "-") by leaving the bound unset.
+	const handleBound =
+		(bound: SoftBound) =>
+		(e: ChangeEvent<HTMLInputElement>): void => {
+			const raw = e.target.value;
+			const next = raw === '' || Number.isNaN(Number(raw)) ? null : Number(raw);
+			onChange({ ...value, [bound]: next });
+		};
+
+	return (
+		<>
+			{controls.minMax && (
+				<div className={styles.bounds}>
+					<div className={styles.field}>
+						<Typography.Text>Soft min</Typography.Text>
+						<Input
+							testId="panel-editor-v2-soft-min"
+							type="number"
+							placeholder="Auto"
+							value={value?.softMin ?? ''}
+							onChange={handleBound('softMin')}
+						/>
+					</div>
+					<div className={styles.field}>
+						<Typography.Text>Soft max</Typography.Text>
+						<Input
+							testId="panel-editor-v2-soft-max"
+							type="number"
+							placeholder="Auto"
+							value={value?.softMax ?? ''}
+							onChange={handleBound('softMax')}
+						/>
+					</div>
+				</div>
+			)}
+
+			{controls.logScale && (
+				<div className={styles.field}>
+					<Typography.Text>Y-axis scale</Typography.Text>
+					<ConfigSegmented
+						testId="panel-editor-v2-log-scale"
+						value={value?.isLogScale ? 'log' : 'linear'}
+						items={SCALE_OPTIONS}
+						onChange={(next): void =>
+							onChange({ ...value, isLogScale: next === 'log' })
+						}
+					/>
+				</div>
+			)}
+		</>
+	);
+}
+
+export default AxesSection;

frontend/src/pages/DashboardPageV2/DashboardContainer/PanelEditor/ConfigPane/sections/AxesSection/__tests__/AxesSection.test.tsx

@@ -0,0 +1,83 @@
+import { fireEvent, render, screen } from '@testing-library/react';
+
+import AxesSection from '../AxesSection';
+
+describe('AxesSection', () => {
+	it('renders soft bounds and the log-scale switch when both controls are enabled', () => {
+		render(
+			<AxesSection
+				value={undefined}
+				controls={{ minMax: true, logScale: true }}
+				onChange={jest.fn()}
+			/>,
+		);
+
+		expect(screen.getByTestId('panel-editor-v2-soft-min')).toBeInTheDocument();
+		expect(screen.getByTestId('panel-editor-v2-soft-max')).toBeInTheDocument();
+		expect(screen.getByTestId('panel-editor-v2-log-scale')).toBeInTheDocument();
+	});
+
+	it('hides the soft bounds when minMax is off', () => {
+		render(
+			<AxesSection
+				value={undefined}
+				controls={{ logScale: true }}
+				onChange={jest.fn()}
+			/>,
+		);
+
+		expect(
+			screen.queryByTestId('panel-editor-v2-soft-min'),
+		).not.toBeInTheDocument();
+		expect(screen.getByTestId('panel-editor-v2-log-scale')).toBeInTheDocument();
+	});
+
+	it('writes a numeric soft min through onChange', () => {
+		const onChange = jest.fn();
+		render(
+			<AxesSection
+				value={undefined}
+				controls={{ minMax: true }}
+				onChange={onChange}
+			/>,
+		);
+
+		fireEvent.change(screen.getByTestId('panel-editor-v2-soft-min'), {
+			target: { value: '5' },
+		});
+
+		expect(onChange).toHaveBeenCalledWith({ softMin: 5 });
+	});
+
+	it('clears a soft bound to null when the field is emptied', () => {
+		const onChange = jest.fn();
+		render(
+			<AxesSection
+				value={{ softMax: 100 }}
+				controls={{ minMax: true }}
+				onChange={onChange}
+			/>,
+		);
+
+		fireEvent.change(screen.getByTestId('panel-editor-v2-soft-max'), {
+			target: { value: '' },
+		});
+
+		expect(onChange).toHaveBeenCalledWith({ softMax: null });
+	});
+
+	it('toggles the logarithmic scale through onChange', () => {
+		const onChange = jest.fn();
+		render(
+			<AxesSection
+				value={{ isLogScale: false }}
+				controls={{ logScale: true }}
+				onChange={onChange}
+			/>,
+		);
+
+		fireEvent.click(screen.getByText('Log'));
+
+		expect(onChange).toHaveBeenCalledWith({ isLogScale: true });
+	});
+});

frontend/src/pages/DashboardPageV2/DashboardContainer/PanelEditor/ConfigPane/sections/BucketsSection/BucketsSection.module.scss

@@ -0,0 +1,5 @@
+.field {
+	display: flex;
+	flex-direction: column;
+	gap: 8px;
+}

frontend/src/pages/DashboardPageV2/DashboardContainer/PanelEditor/ConfigPane/sections/BucketsSection/BucketsSection.tsx

@@ -0,0 +1,75 @@
+import type { ChangeEvent } from 'react';
+import { Input } from '@signozhq/ui/input';
+import { Typography } from '@signozhq/ui/typography';
+import type { SectionEditorProps } from 'pages/DashboardPageV2/DashboardContainer/Panels/types/sections';
+
+import ConfigSwitch from '../../controls/ConfigSwitch/ConfigSwitch';
+
+import styles from './BucketsSection.module.scss';
+
+type NumericBound = 'bucketCount' | 'bucketWidth';
+
+/**
+ * Edits the `histogramBuckets` slice of a Histogram panel spec: bucket count / width
+ * and whether to merge all active queries into one set of buckets. Each control is gated
+ * by its `controls` flag.
+ */
+function BucketsSection({
+	value,
+	controls,
+	onChange,
+}: SectionEditorProps<'buckets'>): JSX.Element {
+	// Empty clears the bound to null (chart auto-sizes); otherwise parse to a number,
+	// ignoring transient non-numeric input by leaving it unset.
+	const handleNumber =
+		(bound: NumericBound) =>
+		(e: ChangeEvent<HTMLInputElement>): void => {
+			const raw = e.target.value;
+			const next = raw === '' || Number.isNaN(Number(raw)) ? null : Number(raw);
+			onChange({ ...value, [bound]: next });
+		};
+
+	return (
+		<>
+			{controls.count && (
+				<div className={styles.field}>
+					<Typography.Text>Bucket count</Typography.Text>
+					<Input
+						testId="panel-editor-v2-bucket-count"
+						type="number"
+						placeholder="Auto"
+						value={value?.bucketCount ?? ''}
+						onChange={handleNumber('bucketCount')}
+					/>
+				</div>
+			)}
+
+			{controls.width && (
+				<div className={styles.field}>
+					<Typography.Text>Bucket width</Typography.Text>
+					<Input
+						testId="panel-editor-v2-bucket-width"
+						type="number"
+						placeholder="Auto"
+						value={value?.bucketWidth ?? ''}
+						onChange={handleNumber('bucketWidth')}
+					/>
+				</div>
+			)}
+
+			{controls.mergeQueries && (
+				<ConfigSwitch
+					testId="panel-editor-v2-merge-queries"
+					title="Merge active queries"
+					description="Bucket all active queries together into one distribution"
+					value={value?.mergeAllActiveQueries ?? false}
+					onChange={(checked): void =>
+						onChange({ ...value, mergeAllActiveQueries: checked })
+					}
+				/>
+			)}
+		</>
+	);
+}
+
+export default BucketsSection;

frontend/src/pages/DashboardPageV2/DashboardContainer/PanelEditor/ConfigPane/sections/BucketsSection/__tests__/BucketsSection.test.tsx

@@ -0,0 +1,68 @@
+import { fireEvent, render, screen } from '@testing-library/react';
+
+import BucketsSection from '../BucketsSection';
+
+describe('BucketsSection', () => {
+	it('renders only the controls whose flag is set', () => {
+		render(
+			<BucketsSection
+				value={undefined}
+				controls={{ count: true }}
+				onChange={jest.fn()}
+			/>,
+		);
+
+		expect(
+			screen.getByTestId('panel-editor-v2-bucket-count'),
+		).toBeInTheDocument();
+		expect(
+			screen.queryByTestId('panel-editor-v2-bucket-width'),
+		).not.toBeInTheDocument();
+		expect(
+			screen.queryByTestId('panel-editor-v2-merge-queries'),
+		).not.toBeInTheDocument();
+	});
+
+	it('writes a numeric bucket count and clears it to null when emptied', () => {
+		const onChange = jest.fn();
+		const { rerender } = render(
+			<BucketsSection
+				value={undefined}
+				controls={{ count: true }}
+				onChange={onChange}
+			/>,
+		);
+
+		fireEvent.change(screen.getByTestId('panel-editor-v2-bucket-count'), {
+			target: { value: '20' },
+		});
+		expect(onChange).toHaveBeenLastCalledWith({ bucketCount: 20 });
+
+		rerender(
+			<BucketsSection
+				value={{ bucketCount: 20 }}
+				controls={{ count: true }}
+				onChange={onChange}
+			/>,
+		);
+		fireEvent.change(screen.getByTestId('panel-editor-v2-bucket-count'), {
+			target: { value: '' },
+		});
+		expect(onChange).toHaveBeenLastCalledWith({ bucketCount: null });
+	});
+
+	it('toggles merge-active-queries through onChange', () => {
+		const onChange = jest.fn();
+		render(
+			<BucketsSection
+				value={{ mergeAllActiveQueries: false }}
+				controls={{ mergeQueries: true }}
+				onChange={onChange}
+			/>,
+		);
+
+		fireEvent.click(screen.getByTestId('panel-editor-v2-merge-queries'));
+
+		expect(onChange).toHaveBeenCalledWith({ mergeAllActiveQueries: true });
+	});
+});

frontend/src/pages/DashboardPageV2/DashboardContainer/PanelEditor/ConfigPane/sections/ChartAppearanceSection/ChartAppearanceSection.module.scss

@@ -0,0 +1,5 @@
+.field {
+	display: flex;
+	flex-direction: column;
+	gap: 8px;
+}

frontend/src/pages/DashboardPageV2/DashboardContainer/PanelEditor/ConfigPane/sections/ChartAppearanceSection/ChartAppearanceSection.tsx

@@ -0,0 +1,164 @@
+import type { ChangeEvent } from 'react';
+import { Input } from '@signozhq/ui/input';
+import { Typography } from '@signozhq/ui/typography';
+import {
+	DashboardtypesFillModeDTO,
+	DashboardtypesLineInterpolationDTO,
+	DashboardtypesLineStyleDTO,
+} from 'api/generated/services/sigNoz.schemas';
+import type { SectionEditorProps } from 'pages/DashboardPageV2/DashboardContainer/Panels/types/sections';
+
+import ConfigSegmented from '../../controls/ConfigSegmented/ConfigSegmented';
+import ConfigSelect from '../../controls/ConfigSelect/ConfigSelect';
+import ConfigSwitch from '../../controls/ConfigSwitch/ConfigSwitch';
+
+import styles from './ChartAppearanceSection.module.scss';
+
+const LINE_STYLE_OPTIONS = [
+	{
+		value: DashboardtypesLineStyleDTO.solid,
+		label: 'Solid',
+		icon: 'solid-line' as const,
+	},
+	{
+		value: DashboardtypesLineStyleDTO.dashed,
+		label: 'Dashed',
+		icon: 'dashed-line' as const,
+	},
+];
+
+const LINE_INTERPOLATION_OPTIONS = [
+	{
+		value: DashboardtypesLineInterpolationDTO.linear,
+		label: 'Linear',
+		icon: 'interp-linear' as const,
+	},
+	{
+		value: DashboardtypesLineInterpolationDTO.spline,
+		label: 'Spline',
+		icon: 'interp-spline' as const,
+	},
+	{
+		value: DashboardtypesLineInterpolationDTO.step_before,
+		label: 'Step before',
+		icon: 'interp-step-before' as const,
+	},
+	{
+		value: DashboardtypesLineInterpolationDTO.step_after,
+		label: 'Step after',
+		icon: 'interp-step-after' as const,
+	},
+];
+
+const FILL_MODE_OPTIONS = [
+	{
+		value: DashboardtypesFillModeDTO.none,
+		label: 'None',
+		icon: 'fill-none' as const,
+	},
+	{
+		value: DashboardtypesFillModeDTO.solid,
+		label: 'Solid',
+		icon: 'fill-solid' as const,
+	},
+	{
+		value: DashboardtypesFillModeDTO.gradient,
+		label: 'Gradient',
+		icon: 'fill-gradient' as const,
+	},
+];
+
+/**
+ * Edits the `chartAppearance` slice of a TimeSeries panel spec: line style /
+ * interpolation, fill mode, point markers, and the connect-null-gaps threshold. Each
+ * control is gated by its `controls` flag.
+ */
+function ChartAppearanceSection({
+	value,
+	controls,
+	onChange,
+}: SectionEditorProps<'chartAppearance'>): JSX.Element {
+	// `spanGaps.fillLessThan` is a stringified seconds threshold: empty means "connect
+	// every gap" (the chart default), a number means "only bridge gaps shorter than this".
+	const handleSpanGaps = (e: ChangeEvent<HTMLInputElement>): void => {
+		const raw = e.target.value;
+		onChange({
+			...value,
+			spanGaps: raw === '' ? undefined : { ...value?.spanGaps, fillLessThan: raw },
+		});
+	};
+	return (
+		<>
+			{controls.lineStyle && (
+				<div className={styles.field}>
+					<Typography.Text>Line style</Typography.Text>
+					<ConfigSegmented
+						testId="panel-editor-v2-line-style"
+						value={value?.lineStyle}
+						items={LINE_STYLE_OPTIONS}
+						onChange={(next): void =>
+							onChange({ ...value, lineStyle: next as DashboardtypesLineStyleDTO })
+						}
+					/>
+				</div>
+			)}
+
+			{controls.lineInterpolation && (
+				<div className={styles.field}>
+					<Typography.Text>Line interpolation</Typography.Text>
+					<ConfigSelect
+						testId="panel-editor-v2-line-interpolation"
+						placeholder="Select interpolation…"
+						value={value?.lineInterpolation}
+						items={LINE_INTERPOLATION_OPTIONS}
+						onChange={(next): void =>
+							onChange({
+								...value,
+								lineInterpolation: next as DashboardtypesLineInterpolationDTO,
+							})
+						}
+					/>
+				</div>
+			)}
+
+			{controls.fillMode && (
+				<div className={styles.field}>
+					<Typography.Text>Fill mode</Typography.Text>
+					<ConfigSegmented
+						testId="panel-editor-v2-fill-mode"
+						value={value?.fillMode}
+						items={FILL_MODE_OPTIONS}
+						onChange={(next): void =>
+							onChange({ ...value, fillMode: next as DashboardtypesFillModeDTO })
+						}
+					/>
+				</div>
+			)}
+
+			{controls.showPoints && (
+				<ConfigSwitch
+					testId="panel-editor-v2-show-points"
+					title="Show points"
+					description="Display individual data points on the chart"
+					value={value?.showPoints ?? false}
+					onChange={(checked): void => onChange({ ...value, showPoints: checked })}
+				/>
+			)}
+
+			{controls.spanGaps && (
+				<div className={styles.field}>
+					<Typography.Text>Connect gaps shorter than (s)</Typography.Text>
+					<Input
+						testId="panel-editor-v2-span-gaps"
+						type="number"
+						placeholder="All gaps"
+						value={value?.spanGaps?.fillLessThan ?? ''}
+						onChange={handleSpanGaps}
+					/>
+				</div>
+			)}
+		</>
+	);
+}
+
+export default ChartAppearanceSection;

frontend/src/pages/DashboardPageV2/DashboardContainer/PanelEditor/ConfigPane/sections/ChartAppearanceSection/__tests__/ChartAppearanceSection.test.tsx

@@ -0,0 +1,136 @@
+import { fireEvent, render, screen } from '@testing-library/react';
+import userEvent from '@testing-library/user-event';
+import { DashboardtypesLineStyleDTO } from 'api/generated/services/sigNoz.schemas';
+
+import ChartAppearanceSection from '../ChartAppearanceSection';
+
+async function pickOption(triggerTestId: string, label: string): Promise<void> {
+	const user = userEvent.setup();
+	await user.click(screen.getByTestId(triggerTestId));
+	await user.click(await screen.findByRole('option', { name: label }));
+}
+
+const ALL_CONTROLS = {
+	lineStyle: true,
+	lineInterpolation: true,
+	fillMode: true,
+	showPoints: true,
+	spanGaps: true,
+};
+
+describe('ChartAppearanceSection', () => {
+	it('renders every control that is enabled', () => {
+		render(
+			<ChartAppearanceSection
+				value={undefined}
+				controls={ALL_CONTROLS}
+				onChange={jest.fn()}
+			/>,
+		);
+
+		expect(screen.getByTestId('panel-editor-v2-line-style')).toBeInTheDocument();
+		expect(
+			screen.getByTestId('panel-editor-v2-line-interpolation'),
+		).toBeInTheDocument();
+		expect(screen.getByTestId('panel-editor-v2-fill-mode')).toBeInTheDocument();
+		expect(screen.getByTestId('panel-editor-v2-show-points')).toBeInTheDocument();
+		expect(screen.getByTestId('panel-editor-v2-span-gaps')).toBeInTheDocument();
+	});
+
+	it('renders only the controls whose flag is set', () => {
+		render(
+			<ChartAppearanceSection
+				value={undefined}
+				controls={{ lineStyle: true, fillMode: true }}
+				onChange={jest.fn()}
+			/>,
+		);
+
+		expect(screen.getByTestId('panel-editor-v2-line-style')).toBeInTheDocument();
+		expect(screen.getByTestId('panel-editor-v2-fill-mode')).toBeInTheDocument();
+		expect(
+			screen.queryByTestId('panel-editor-v2-line-interpolation'),
+		).not.toBeInTheDocument();
+		expect(
+			screen.queryByTestId('panel-editor-v2-show-points'),
+		).not.toBeInTheDocument();
+	});
+
+	it('writes the chosen fill mode through the segmented control', () => {
+		const onChange = jest.fn();
+		render(
+			<ChartAppearanceSection
+				value={{ lineStyle: DashboardtypesLineStyleDTO.solid }}
+				controls={{ fillMode: true }}
+				onChange={onChange}
+			/>,
+		);
+
+		fireEvent.click(screen.getByText('Gradient'));
+
+		expect(onChange).toHaveBeenCalledWith({
+			lineStyle: 'solid',
+			fillMode: 'gradient',
+		});
+	});
+
+	it('writes the chosen line interpolation through the dropdown', async () => {
+		const onChange = jest.fn();
+		render(
+			<ChartAppearanceSection
+				value={undefined}
+				controls={{ lineInterpolation: true }}
+				onChange={onChange}
+			/>,
+		);
+
+		await pickOption('panel-editor-v2-line-interpolation', 'Spline');
+
+		expect(onChange).toHaveBeenCalledWith({ lineInterpolation: 'spline' });
+	});
+
+	it('toggles show points through onChange', () => {
+		const onChange = jest.fn();
+		render(
+			<ChartAppearanceSection
+				value={{ showPoints: false }}
+				controls={{ showPoints: true }}
+				onChange={onChange}
+			/>,
+		);
+
+		fireEvent.click(screen.getByTestId('panel-editor-v2-show-points'));
+
+		expect(onChange).toHaveBeenCalledWith({ showPoints: true });
+	});
+
+	it('writes a span-gaps threshold and clears it when emptied', () => {
+		const onChange = jest.fn();
+		const { rerender } = render(
+			<ChartAppearanceSection
+				value={undefined}
+				controls={{ spanGaps: true }}
+				onChange={onChange}
+			/>,
+		);
+
+		fireEvent.change(screen.getByTestId('panel-editor-v2-span-gaps'), {
+			target: { value: '60' },
+		});
+		expect(onChange).toHaveBeenLastCalledWith({
+			spanGaps: { fillLessThan: '60' },
+		});
+
+		rerender(
+			<ChartAppearanceSection
+				value={{ spanGaps: { fillLessThan: '60' } }}
+				controls={{ spanGaps: true }}
+				onChange={onChange}
+			/>,
+		);
+		fireEvent.change(screen.getByTestId('panel-editor-v2-span-gaps'), {
+			target: { value: '' },
+		});
+		expect(onChange).toHaveBeenLastCalledWith({ spanGaps: undefined });
+	});
+});

frontend/src/pages/DashboardPageV2/DashboardContainer/PanelEditor/ConfigPane/sections/ComparisonThresholdsSection/ComparisonThresholdRow.tsx

@@ -0,0 +1,211 @@
+import { type ChangeEvent, useEffect, useState } from 'react';
+import { Check, Pencil, Trash2, X } from '@signozhq/icons';
+import { Button } from '@signozhq/ui/button';
+import { Input } from '@signozhq/ui/input';
+import { Typography } from '@signozhq/ui/typography';
+import type {
+	DashboardtypesComparisonOperatorDTO,
+	DashboardtypesComparisonThresholdDTO,
+	DashboardtypesThresholdFormatDTO,
+} from 'api/generated/services/sigNoz.schemas';
+import YAxisUnitSelector from 'components/YAxisUnitSelector';
+import { YAxisSource } from 'components/YAxisUnitSelector/types';
+import { formatPanelValue } from 'pages/DashboardPageV2/DashboardContainer/Panels/utils/formatPanelValue';
+
+import ConfigSelect from '../../controls/ConfigSelect/ConfigSelect';
+import ThresholdColorSelect from '../ThresholdsSection/ThresholdColorSelect';
+import {
+	isThresholdUnitIncompatible,
+	thresholdUnitCategories,
+} from '../ThresholdsSection/thresholdUnitCategories';
+import {
+	FORMAT_OPTIONS,
+	OPERATOR_OPTIONS,
+	OPERATOR_SYMBOL,
+} from './comparisonThresholdOptions';
+
+import styles from '../ThresholdsSection/ThresholdsSection.module.scss';
+
+interface ComparisonThresholdRowProps {
+	index: number;
+	threshold: DashboardtypesComparisonThresholdDTO;
+	/** Panel formatting unit — scopes the unit picker to its category (V1 parity). */
+	yAxisUnit?: string;
+	isEditing: boolean;
+	onEdit: () => void;
+	onSave: (next: DashboardtypesComparisonThresholdDTO) => void;
+	onDiscard: () => void;
+	onRemove: () => void;
+}
+
+/**
+ * One Number-panel comparison threshold ("If value > 80 → red") with V1-style
+ * view/edit modes. View mode is a compact summary (color · operator value+unit ·
+ * display); edit mode is a labelled form — condition (operator), value, unit (scoped to
+ * the y-axis unit's category), color, and display (text/background) — editing a local
+ * draft committed only on Save. Discard drops it.
+ */
+function ComparisonThresholdRow({
+	index,
+	threshold,
+	yAxisUnit,
+	isEditing,
+	onEdit,
+	onSave,
+	onDiscard,
+	onRemove,
+}: ComparisonThresholdRowProps): JSX.Element {
+	const [draft, setDraft] = useState(threshold);
+
+	// Snapshot the saved threshold into the draft each time we (re)enter edit mode, so
+	// Discard simply drops the draft and the next edit starts clean.
+	useEffect(() => {
+		if (isEditing) {
+			setDraft(threshold);
+		}
+		// eslint-disable-next-line react-hooks/exhaustive-deps -- snapshot only on edit entry
+	}, [isEditing]);
+
+	if (!isEditing) {
+		const symbol = threshold.operator ? OPERATOR_SYMBOL[threshold.operator] : '';
+		return (
+			<div className={styles.viewRow}>
+				<span className={styles.dot} style={{ backgroundColor: threshold.color }} />
+				<span className={styles.viewValue}>
+					{symbol} {formatPanelValue(threshold.value, threshold.unit)}
+				</span>
+				<div className={styles.spacer} />
+				<Button
+					type="button"
+					variant="ghost"
+					color="secondary"
+					size="icon"
+					aria-label={`Edit threshold ${index + 1}`}
+					data-testid={`comparison-threshold-edit-${index}`}
+					onClick={onEdit}
+				>
+					<Pencil size={14} />
+				</Button>
+				<Button
+					type="button"
+					variant="ghost"
+					color="destructive"
+					size="icon"
+					aria-label={`Remove threshold ${index + 1}`}
+					data-testid={`comparison-threshold-remove-${index}`}
+					onClick={onRemove}
+				>
+					<Trash2 size={14} />
+				</Button>
+			</div>
+		);
+	}
+
+	const handleValue = (e: ChangeEvent<HTMLInputElement>): void => {
+		const next = Number(e.target.value);
+		setDraft((d) => ({ ...d, value: Number.isNaN(next) ? d.value : next }));
+	};
+
+	return (
+		<div className={styles.editRow}>
+			<div className={styles.field}>
+				<Typography.Text className={styles.fieldLabel}>If value is</Typography.Text>
+				<ConfigSelect
+					testId={`comparison-threshold-operator-${index}`}
+					placeholder="Select condition"
+					value={draft.operator}
+					items={OPERATOR_OPTIONS}
+					onChange={(operator): void =>
+						setDraft((d) => ({
+							...d,
+							operator: operator as DashboardtypesComparisonOperatorDTO,
+						}))
+					}
+				/>
+			</div>
+
+			<div className={styles.field}>
+				<Typography.Text className={styles.fieldLabel}>Value</Typography.Text>
+				<Input
+					testId={`comparison-threshold-value-${index}`}
+					type="number"
+					placeholder="Value"
+					value={draft.value}
+					onChange={handleValue}
+				/>
+			</div>
+
+			<div className={styles.field}>
+				<Typography.Text className={styles.fieldLabel}>Unit</Typography.Text>
+				<YAxisUnitSelector
+					containerClassName={styles.unitSelector}
+					data-testid={`comparison-threshold-unit-${index}`}
+					placeholder="Select unit"
+					source={YAxisSource.DASHBOARDS}
+					categoriesOverride={thresholdUnitCategories(yAxisUnit)}
+					value={draft.unit}
+					onChange={(unit): void => setDraft((d) => ({ ...d, unit }))}
+				/>
+				{isThresholdUnitIncompatible(draft.unit, yAxisUnit) && (
+					<Typography.Text
+						className={styles.invalidUnit}
+						data-testid={`comparison-threshold-unit-invalid-${index}`}
+					>
+						Threshold unit ({draft.unit}) is not valid with the y-axis unit (
+						{yAxisUnit})
+					</Typography.Text>
+				)}
+			</div>
+
+			<div className={styles.field}>
+				<Typography.Text className={styles.fieldLabel}>Color</Typography.Text>
+				<ThresholdColorSelect
+					value={draft.color}
+					testId={`comparison-threshold-color-${index}`}
+					onChange={(color): void => setDraft((d) => ({ ...d, color }))}
+				/>
+			</div>
+
+			<div className={styles.field}>
+				<Typography.Text className={styles.fieldLabel}>Display</Typography.Text>
+				<ConfigSelect
+					testId={`comparison-threshold-format-${index}`}
+					placeholder="Select display"
+					value={draft.format}
+					items={FORMAT_OPTIONS}
+					onChange={(format): void =>
+						setDraft((d) => ({
+							...d,
+							format: format as DashboardtypesThresholdFormatDTO,
+						}))
+					}
+				/>
+			</div>
+
+			<div className={styles.actions}>
+				<Button
+					type="button"
+					variant="outlined"
+					color="secondary"
+					prefix={<X size={14} />}
+					data-testid={`comparison-threshold-discard-${index}`}
+					onClick={onDiscard}
+				>
+					Discard
+				</Button>
+				<Button
+					type="button"
+					variant="solid"
+					color="primary"
+					prefix={<Check size={14} />}
+					data-testid={`comparison-threshold-save-${index}`}
+					onClick={(): void => onSave(draft)}
+				>
+					Save
+				</Button>
+			</div>
+		</div>
+	);
+}
+
+export default ComparisonThresholdRow;

frontend/src/pages/DashboardPageV2/DashboardContainer/PanelEditor/ConfigPane/sections/ComparisonThresholdsSection/ComparisonThresholdsSection.tsx

@@ -0,0 +1,110 @@
+import { useState } from 'react';
+import { Plus } from '@signozhq/icons';
+import { Button } from '@signozhq/ui/button';
+import {
+	DashboardtypesComparisonOperatorDTO,
+	type DashboardtypesComparisonThresholdDTO,
+	DashboardtypesThresholdFormatDTO,
+} from 'api/generated/services/sigNoz.schemas';
+import type { SectionEditorProps } from 'pages/DashboardPageV2/DashboardContainer/Panels/types/sections';
+
+import ComparisonThresholdRow from './ComparisonThresholdRow';
+
+import styles from '../ThresholdsSection/ThresholdsSection.module.scss';
+
+// New thresholds default to red (the first palette preset); the user recolors per rule.
+const DEFAULT_THRESHOLD_COLOR = '#F1575F';
+
+type ComparisonThresholdsSectionProps =
+	SectionEditorProps<'comparisonThresholds'> & {
+		/** Panel formatting unit; scopes each row's unit picker to its category (V1 parity). */
+		yAxisUnit?: string;
+	};
+
+/**
+ * Edits the Number panel's `thresholds` slice — a list of comparison rules (value
+ * crosses an operator → recolor the displayed number), each with V1-style view/edit
+ * modes. Only one row edits at a time; a freshly-added row opens in edit mode and is
+ * removed if discarded before saving. TimeSeries/Bar use the value+label `ThresholdsSection`.
+ */
+function ComparisonThresholdsSection({
+	value,
+	onChange,
+	yAxisUnit,
+}: ComparisonThresholdsSectionProps): JSX.Element {
+	const thresholds = value ?? [];
+	// Which row is being edited, and whether it was just added (so Discard removes it).
+	const [editingIndex, setEditingIndex] = useState<number | null>(null);
+	const [unsavedIndex, setUnsavedIndex] = useState<number | null>(null);
+
+	const addThreshold = (): void => {
+		const nextIndex = thresholds.length;
+		onChange([
+			...thresholds,
+			{
+				value: 0,
+				color: DEFAULT_THRESHOLD_COLOR,
+				operator: DashboardtypesComparisonOperatorDTO.above,
+				format: DashboardtypesThresholdFormatDTO.text,
+			},
+		]);
+		setEditingIndex(nextIndex);
+		setUnsavedIndex(nextIndex);
+	};
+
+	const saveAt =
+		(index: number) =>
+		(next: DashboardtypesComparisonThresholdDTO): void => {
+			onChange(thresholds.map((t, i) => (i === index ? next : t)));
+			setEditingIndex(null);
+			setUnsavedIndex(null);
+		};
+
+	const removeAt = (index: number): void => {
+		onChange(thresholds.filter((_, i) => i !== index));
+		setEditingIndex(null);
+		setUnsavedIndex(null);
+	};
+
+	const discardAt = (index: number) => (): void => {
+		// Discarding a row that was never saved removes it; otherwise just exit edit.
+		if (index === unsavedIndex) {
+			removeAt(index);
+			return;
+		}
+		setEditingIndex(null);
+	};
+
+	return (
+		<div className={styles.list}>
+			{thresholds.map((threshold, index) => (
+				<ComparisonThresholdRow
+					// Thresholds have no stable id on the wire; index is the row identity.
+					// eslint-disable-next-line react/no-array-index-key
+					key={index}
+					index={index}
+					threshold={threshold}
+					yAxisUnit={yAxisUnit}
+					isEditing={editingIndex === index}
+					onEdit={(): void => setEditingIndex(index)}
+					onSave={saveAt(index)}
+					onDiscard={discardAt(index)}
+					onRemove={(): void => removeAt(index)}
+				/>
+			))}
+
+			<Button
+				type="button"
+				variant="dashed"
+				color="secondary"
+				prefix={<Plus size={14} />}
+				data-testid="panel-editor-v2-add-comparison-threshold"
+				onClick={addThreshold}
+			>
+				Add threshold
+			</Button>
+		</div>
+	);
+}
+
+export default ComparisonThresholdsSection;

frontend/src/pages/DashboardPageV2/DashboardContainer/PanelEditor/ConfigPane/sections/ComparisonThresholdsSection/__tests__/ComparisonThresholdsSection.test.tsx

@@ -0,0 +1,180 @@
+import { useState } from 'react';
+import { fireEvent, render, screen } from '@testing-library/react';
+import {
+	DashboardtypesComparisonOperatorDTO,
+	type DashboardtypesComparisonThresholdDTO,
+	DashboardtypesThresholdFormatDTO,
+} from 'api/generated/services/sigNoz.schemas';
+
+import ComparisonThresholdsSection from '../ComparisonThresholdsSection';
+
+const THRESHOLDS: DashboardtypesComparisonThresholdDTO[] = [
+	{
+		value: 80,
+		color: '#F5B225',
+		operator: DashboardtypesComparisonOperatorDTO.above,
+		unit: 'percent',
+		format: DashboardtypesThresholdFormatDTO.background,
+	},
+];
+
+// Stateful harness for flows that depend on the value updating (add/discard).
+function Harness({ yAxisUnit }: { yAxisUnit?: string }): JSX.Element {
+	const [value, setValue] = useState<DashboardtypesComparisonThresholdDTO[]>([]);
+	return (
+		<ComparisonThresholdsSection
+			value={value}
+			onChange={setValue}
+			yAxisUnit={yAxisUnit}
+		/>
+	);
+}
+
+describe('ComparisonThresholdsSection', () => {
+	it('renders only the add button when there are no thresholds', () => {
+		render(
+			<ComparisonThresholdsSection value={undefined} onChange={jest.fn()} />,
+		);
+
+		expect(
+			screen.getByTestId('panel-editor-v2-add-comparison-threshold'),
+		).toBeInTheDocument();
+		expect(
+			screen.queryByTestId('comparison-threshold-edit-0'),
+		).not.toBeInTheDocument();
+	});
+
+	it('shows an existing threshold in view mode (no form until Edit)', () => {
+		render(
+			<ComparisonThresholdsSection value={THRESHOLDS} onChange={jest.fn()} />,
+		);
+
+		expect(screen.getByTestId('comparison-threshold-edit-0')).toBeInTheDocument();
+		// Operator symbol + value render in the summary.
+		expect(screen.getByText(/> 80/)).toBeInTheDocument();
+		// The editable fields are hidden until the row is edited.
+		expect(
+			screen.queryByTestId('comparison-threshold-value-0'),
+		).not.toBeInTheDocument();
+	});
+
+	it('formats the view-mode value through its unit (e.g. currency symbol)', () => {
+		render(
+			<ComparisonThresholdsSection
+				value={[
+					{
+						value: 3100,
+						color: '#F5B225',
+						operator: DashboardtypesComparisonOperatorDTO.below,
+						unit: 'currencyUSD',
+					},
+				]}
+				onChange={jest.fn()}
+			/>,
+		);
+
+		const row = screen.getByTestId('comparison-threshold-edit-0').closest('div');
+		// Unit-aware: shows the currency symbol, never the raw unit id.
+		expect(row).toHaveTextContent('$');
+		expect(row).not.toHaveTextContent('currencyUSD');
+	});
+
+	it('edits a threshold value and commits it on Save', () => {
+		const onChange = jest.fn();
+		render(
+			<ComparisonThresholdsSection value={THRESHOLDS} onChange={onChange} />,
+		);
+
+		fireEvent.click(screen.getByTestId('comparison-threshold-edit-0'));
+		expect(screen.getByTestId('comparison-threshold-value-0')).toHaveValue(80);
+
+		fireEvent.change(screen.getByTestId('comparison-threshold-value-0'), {
+			target: { value: '90' },
+		});
+		fireEvent.click(screen.getByTestId('comparison-threshold-save-0'));
+
+		expect(onChange).toHaveBeenCalledWith([
+			{
+				value: 90,
+				color: '#F5B225',
+				operator: DashboardtypesComparisonOperatorDTO.above,
+				unit: 'percent',
+				format: DashboardtypesThresholdFormatDTO.background,
+			},
+		]);
+	});
+
+	it('does not commit edits when Discard is clicked', () => {
+		const onChange = jest.fn();
+		render(
+			<ComparisonThresholdsSection value={THRESHOLDS} onChange={onChange} />,
+		);
+
+		fireEvent.click(screen.getByTestId('comparison-threshold-edit-0'));
+		fireEvent.change(screen.getByTestId('comparison-threshold-value-0'), {
+			target: { value: '90' },
+		});
+		fireEvent.click(screen.getByTestId('comparison-threshold-discard-0'));
+
+		expect(onChange).not.toHaveBeenCalled();
+		// Back to view mode.
+		expect(
+			screen.queryByTestId('comparison-threshold-value-0'),
+		).not.toBeInTheDocument();
+		expect(screen.getByTestId('comparison-threshold-edit-0')).toBeInTheDocument();
+	});
+
+	it('removes a threshold from view mode', () => {
+		const onChange = jest.fn();
+		render(
+			<ComparisonThresholdsSection value={THRESHOLDS} onChange={onChange} />,
+		);
+
+		fireEvent.click(screen.getByTestId('comparison-threshold-remove-0'));
+
+		expect(onChange).toHaveBeenCalledWith([]);
+	});
+
+	it('adds a threshold that opens in edit mode, and discards it away', () => {
+		render(<Harness />);
+
+		fireEvent.click(
+			screen.getByTestId('panel-editor-v2-add-comparison-threshold'),
+		);
+		// New row opens in edit mode.
+		expect(
+			screen.getByTestId('comparison-threshold-value-0'),
+		).toBeInTheDocument();
+
+		fireEvent.click(screen.getByTestId('comparison-threshold-discard-0'));
+		// Discarding a never-saved row removes it entirely.
+		expect(
+			screen.queryByTestId('comparison-threshold-value-0'),
+		).not.toBeInTheDocument();
+		expect(
+			screen.queryByTestId('comparison-threshold-edit-0'),
+		).not.toBeInTheDocument();
+	});
+
+	it('flags a threshold unit in a different category than the y-axis unit', () => {
+		render(
+			<ComparisonThresholdsSection
+				value={[
+					{
+						value: 80,
+						color: '#F5B225',
+						operator: DashboardtypesComparisonOperatorDTO.above,
+						unit: 'ms',
+					},
+				]}
+				yAxisUnit="bytes"
+				onChange={jest.fn()}
+			/>,
+		);
+
+		fireEvent.click(screen.getByTestId('comparison-threshold-edit-0'));
+		expect(
+			screen.getByTestId('comparison-threshold-unit-invalid-0'),
+		).toBeInTheDocument();
+	});
+});

frontend/src/pages/DashboardPageV2/DashboardContainer/PanelEditor/ConfigPane/sections/ComparisonThresholdsSection/comparisonThresholdOptions.ts

@@ -0,0 +1,47 @@
+import {
+	DashboardtypesComparisonOperatorDTO,
+	DashboardtypesThresholdFormatDTO,
+} from 'api/generated/services/sigNoz.schemas';
+
+import type { ConfigSelectItem } from '../../controls/ConfigSelect/ConfigSelect';
+
+// Comparison operators offered in the "If value is" condition picker. Labels pair a
+// word with its math symbol so the dropdown reads clearly while the view row can show
+// the compact symbol (OPERATOR_SYMBOL below).
+export const OPERATOR_OPTIONS: ConfigSelectItem[] = [
+	{ value: DashboardtypesComparisonOperatorDTO.above, label: 'Above (>)' },
+	{
+		value: DashboardtypesComparisonOperatorDTO.above_or_equal,
+		label: 'Above or equal (≥)',
+	},
+	{ value: DashboardtypesComparisonOperatorDTO.below, label: 'Below (<)' },
+	{
+		value: DashboardtypesComparisonOperatorDTO.below_or_equal,
+		label: 'Below or equal (≤)',
+	},
+	{ value: DashboardtypesComparisonOperatorDTO.equal, label: 'Equal (=)' },
+	{
+		value: DashboardtypesComparisonOperatorDTO.not_equal,
+		label: 'Not equal (≠)',
+	},
+];
+
+// Compact symbol shown in the collapsed (view-mode) summary row.
+export const OPERATOR_SYMBOL: Record<
+	DashboardtypesComparisonOperatorDTO,
+	string
+> = {
+	[DashboardtypesComparisonOperatorDTO.above]: '>',
+	[DashboardtypesComparisonOperatorDTO.above_or_equal]: '≥',
+	[DashboardtypesComparisonOperatorDTO.below]: '<',
+	[DashboardtypesComparisonOperatorDTO.below_or_equal]: '≤',
+	[DashboardtypesComparisonOperatorDTO.equal]: '=',
+	[DashboardtypesComparisonOperatorDTO.not_equal]: '≠',
+};
+
+// How the threshold recolors the panel: just the number ("text") or the whole tile
+// ("background").
+export const FORMAT_OPTIONS: ConfigSelectItem[] = [
+	{ value: DashboardtypesThresholdFormatDTO.background, label: 'Background' },
+	{ value: DashboardtypesThresholdFormatDTO.text, label: 'Text' },
+];

frontend/src/pages/DashboardPageV2/DashboardContainer/PanelEditor/ConfigPane/sections/ContextLinksSection/ContextLinksSection.module.scss

@@ -0,0 +1,32 @@
+.list {
+	display: flex;
+	flex-direction: column;
+	gap: 12px;
+}
+
+.row {
+	display: flex;
+	flex-direction: column;
+	gap: 8px;
+	padding: 10px;
+	border: 1px solid var(--l2-border);
+	border-radius: 6px;
+}
+
+.rowFooter {
+	display: flex;
+	align-items: center;
+	justify-content: space-between;
+}
+
+.newTab {
+	display: flex;
+	align-items: center;
+	gap: 8px;
+	cursor: pointer;
+}
+
+.newTabLabel {
+	font-size: 12px;
+	color: var(--text-vanilla-400);
+}

frontend/src/pages/DashboardPageV2/DashboardContainer/PanelEditor/ConfigPane/sections/ContextLinksSection/ContextLinksSection.tsx

@@ -0,0 +1,94 @@
+import { Plus, Trash2 } from '@signozhq/icons';
+import { Button } from '@signozhq/ui/button';
+import { Input } from '@signozhq/ui/input';
+import { Switch } from '@signozhq/ui/switch';
+import { Typography } from '@signozhq/ui/typography';
+import type { DashboardLinkDTO } from 'api/generated/services/sigNoz.schemas';
+import type { SectionEditorProps } from 'pages/DashboardPageV2/DashboardContainer/Panels/types/sections';
+
+import styles from './ContextLinksSection.module.scss';
+
+/**
+ * Edits the panel's context links (`spec.links`): a list of label + URL rows with an
+ * "open in new tab" toggle, plus add/remove. Atomic section — no per-kind sub-controls.
+ * URLs may reference dashboard/query variables; that interpolation is resolved at render
+ * time, so this editor just captures the raw strings.
+ */
+function ContextLinksSection({
+	value,
+	onChange,
+}: SectionEditorProps<'contextLinks'>): JSX.Element {
+	const links = value ?? [];
+
+	const updateAt = (index: number, patch: Partial<DashboardLinkDTO>): void =>
+		onChange(
+			links.map((link, i) => (i === index ? { ...link, ...patch } : link)),
+		);
+
+	const addLink = (): void =>
+		onChange([...links, { name: '', url: '', targetBlank: true }]);
+
+	const removeAt = (index: number): void =>
+		onChange(links.filter((_, i) => i !== index));
+
+	return (
+		<div className={styles.list}>
+			{links.map((link, index) => (
+				// Links have no stable id on the wire; index is the row identity here.
+				// eslint-disable-next-line react/no-array-index-key
+				<div className={styles.row} key={index}>
+					<Input
+						testId={`context-link-label-${index}`}
+						placeholder="Label"
+						value={link.name ?? ''}
+						onChange={(e): void => updateAt(index, { name: e.target.value })}
+					/>
+					<Input
+						testId={`context-link-url-${index}`}
+						placeholder="https://… or /path?var=$variable"
+						value={link.url ?? ''}
+						onChange={(e): void => updateAt(index, { url: e.target.value })}
+					/>
+					<div className={styles.rowFooter}>
+						<div className={styles.newTab}>
+							<Switch
+								testId={`context-link-newtab-${index}`}
+								value={link.targetBlank ?? false}
+								onChange={(checked: boolean): void =>
+									updateAt(index, { targetBlank: checked })
+								}
+							/>
+							<Typography.Text className={styles.newTabLabel}>
+								Open in new tab
+							</Typography.Text>
+						</div>
+						<Button
+							type="button"
+							variant="ghost"
+							color="destructive"
+							size="icon"
+							aria-label={`Remove link ${index + 1}`}
+							data-testid={`context-link-remove-${index}`}
+							onClick={(): void => removeAt(index)}
+						>
+							<Trash2 size={14} />
+						</Button>
+					</div>
+				</div>
+			))}
+
+			<Button
+				type="button"
+				variant="dashed"
+				color="secondary"
+				prefix={<Plus size={14} />}
+				data-testid="panel-editor-v2-add-link"
+				onClick={addLink}
+			>
+				Add link
+			</Button>
+		</div>
+	);
+}
+
+export default ContextLinksSection;

frontend/src/pages/DashboardPageV2/DashboardContainer/PanelEditor/ConfigPane/sections/ContextLinksSection/__tests__/ContextLinksSection.test.tsx

@@ -0,0 +1,54 @@
+import { fireEvent, render, screen } from '@testing-library/react';
+import type { DashboardLinkDTO } from 'api/generated/services/sigNoz.schemas';
+
+import ContextLinksSection from '../ContextLinksSection';
+
+const LINKS: DashboardLinkDTO[] = [
+	{ name: 'Docs', url: 'https://signoz.io', targetBlank: true },
+];
+
+describe('ContextLinksSection', () => {
+	it('renders only the add button when there are no links', () => {
+		render(<ContextLinksSection value={undefined} onChange={jest.fn()} />);
+
+		expect(screen.getByTestId('panel-editor-v2-add-link')).toBeInTheDocument();
+		expect(screen.queryByTestId('context-link-label-0')).not.toBeInTheDocument();
+	});
+
+	it('appends a blank link (open-in-new-tab on) when Add link is clicked', () => {
+		const onChange = jest.fn();
+		render(<ContextLinksSection value={[]} onChange={onChange} />);
+
+		fireEvent.click(screen.getByTestId('panel-editor-v2-add-link'));
+
+		expect(onChange).toHaveBeenCalledWith([
+			{ name: '', url: '', targetBlank: true },
+		]);
+	});
+
+	it('renders existing links and edits a label through onChange', () => {
+		const onChange = jest.fn();
+		render(<ContextLinksSection value={LINKS} onChange={onChange} />);
+
+		expect(screen.getByTestId('context-link-label-0')).toHaveValue('Docs');
+		expect(screen.getByTestId('context-link-url-0')).toHaveValue(
+			'https://signoz.io',
+		);
+
+		fireEvent.change(screen.getByTestId('context-link-label-0'), {
+			target: { value: 'Runbook' },
+		});
+		expect(onChange).toHaveBeenCalledWith([
+			{ name: 'Runbook', url: 'https://signoz.io', targetBlank: true },
+		]);
+	});
+
+	it('removes a link through onChange', () => {
+		const onChange = jest.fn();
+		render(<ContextLinksSection value={LINKS} onChange={onChange} />);
+
+		fireEvent.click(screen.getByTestId('context-link-remove-0'));
+
+		expect(onChange).toHaveBeenCalledWith([]);
+	});
+});

frontend/src/pages/DashboardPageV2/DashboardContainer/PanelEditor/ConfigPane/sections/FormattingSection/FormattingSection.module.scss

@@ -0,0 +1,11 @@
+.field {
+	display: flex;
+	flex-direction: column;
+	gap: 8px;
+}
+
+.unitSelector {
+	:global(.ant-select) {
+		width: 100%;
+	}
+}

frontend/src/pages/DashboardPageV2/DashboardContainer/PanelEditor/ConfigPane/sections/FormattingSection/FormattingSection.tsx

@@ -0,0 +1,70 @@
+import { Typography } from '@signozhq/ui/typography';
+import { DashboardtypesPrecisionOptionDTO } from 'api/generated/services/sigNoz.schemas';
+import YAxisUnitSelector from 'components/YAxisUnitSelector';
+import { YAxisSource } from 'components/YAxisUnitSelector/types';
+import type { SectionEditorProps } from 'pages/DashboardPageV2/DashboardContainer/Panels/types/sections';
+
+import ConfigSelect from '../../controls/ConfigSelect/ConfigSelect';
+
+import styles from './FormattingSection.module.scss';
+
+// `full` means "show the raw value, no rounding"; the digits round to that many places.
+const DECIMAL_OPTIONS: {
+	value: DashboardtypesPrecisionOptionDTO;
+	label: string;
+}[] = [
+	{ value: DashboardtypesPrecisionOptionDTO.NUMBER_0, label: '0 decimals' },
+	{ value: DashboardtypesPrecisionOptionDTO.NUMBER_1, label: '1 decimal' },
+	{ value: DashboardtypesPrecisionOptionDTO.NUMBER_2, label: '2 decimals' },
+	{ value: DashboardtypesPrecisionOptionDTO.NUMBER_3, label: '3 decimals' },
+	{ value: DashboardtypesPrecisionOptionDTO.NUMBER_4, label: '4 decimals' },
+	{ value: DashboardtypesPrecisionOptionDTO.full, label: 'Full' },
+];
+
+/**
+ * Edits the `formatting` slice of a panel spec (unit + decimal precision). Which
+ * controls show is driven by the per-kind `controls` flags; the spec slice itself
+ * is uniform across every kind that declares the Formatting section.
+ */
+function FormattingSection({
+	value,
+	controls,
+	onChange,
+}: SectionEditorProps<'formatting'>): JSX.Element {
+	return (
+		<>
+			{controls.unit && (
+				<div className={styles.field}>
+					<Typography.Text>Unit</Typography.Text>
+					<YAxisUnitSelector
+						containerClassName={styles.unitSelector}
+						data-testid="panel-editor-v2-unit"
+						source={YAxisSource.DASHBOARDS}
+						value={value?.unit}
+						onChange={(unit): void => onChange({ ...value, unit })}
+					/>
+				</div>
+			)}
+
+			{controls.decimals && (
+				<div className={styles.field}>
+					<Typography.Text>Decimals</Typography.Text>
+					<ConfigSelect
+						testId="panel-editor-v2-decimals"
+						placeholder="Select decimals…"
+						value={value?.decimalPrecision}
+						items={DECIMAL_OPTIONS}
+						onChange={(next): void =>
+							onChange({
+								...value,
+								decimalPrecision: next as DashboardtypesPrecisionOptionDTO,
+							})
+						}
+					/>
+				</div>
+			)}
+		</>
+	);
+}
+
+export default FormattingSection;

frontend/src/pages/DashboardPageV2/DashboardContainer/PanelEditor/ConfigPane/sections/FormattingSection/__tests__/FormattingSection.test.tsx

@@ -0,0 +1,72 @@
+import { render, screen } from '@testing-library/react';
+import userEvent from '@testing-library/user-event';
+
+import FormattingSection from '../FormattingSection';
+
+// Open the Decimals select and pick the option with the given visible label.
+async function pickDecimal(label: string): Promise<void> {
+	const user = userEvent.setup();
+	await user.click(screen.getByTestId('panel-editor-v2-decimals'));
+	await user.click(await screen.findByRole('option', { name: label }));
+}
+
+describe('FormattingSection', () => {
+	it('renders Unit and Decimals when both controls are enabled', () => {
+		render(
+			<FormattingSection
+				value={undefined}
+				controls={{ unit: true, decimals: true }}
+				onChange={jest.fn()}
+			/>,
+		);
+
+		expect(screen.getByTestId('panel-editor-v2-unit')).toBeInTheDocument();
+		expect(screen.getByTestId('panel-editor-v2-decimals')).toBeInTheDocument();
+	});
+
+	it('hides a control when its flag is off', () => {
+		render(
+			<FormattingSection
+				value={undefined}
+				controls={{ decimals: true }}
+				onChange={jest.fn()}
+			/>,
+		);
+
+		expect(screen.queryByTestId('panel-editor-v2-unit')).not.toBeInTheDocument();
+		expect(screen.getByTestId('panel-editor-v2-decimals')).toBeInTheDocument();
+	});
+
+	it('writes the chosen decimal precision through onChange', async () => {
+		const onChange = jest.fn();
+		render(
+			<FormattingSection
+				value={undefined}
+				controls={{ decimals: true }}
+				onChange={onChange}
+			/>,
+		);
+
+		await pickDecimal('Full');
+
+		expect(onChange).toHaveBeenCalledWith({ decimalPrecision: 'full' });
+	});
+
+	it('merges the edit into the existing formatting slice', async () => {
+		const onChange = jest.fn();
+		render(
+			<FormattingSection
+				value={{ unit: 'bytes' }}
+				controls={{ decimals: true }}
+				onChange={onChange}
+			/>,
+		);
+
+		await pickDecimal('2 decimals');
+
+		expect(onChange).toHaveBeenCalledWith({
+			unit: 'bytes',
+			decimalPrecision: '2',
+		});
+	});
+});

frontend/src/pages/DashboardPageV2/DashboardContainer/PanelEditor/ConfigPane/sections/LegendSection/LegendSection.module.scss

@@ -0,0 +1,5 @@
+.field {
+	display: flex;
+	flex-direction: column;
+	gap: 8px;
+}

frontend/src/pages/DashboardPageV2/DashboardContainer/PanelEditor/ConfigPane/sections/LegendSection/LegendSection.tsx

@@ -0,0 +1,73 @@
+import { Typography } from '@signozhq/ui/typography';
+import { DashboardtypesLegendPositionDTO } from 'api/generated/services/sigNoz.schemas';
+import type { SectionEditorProps } from 'pages/DashboardPageV2/DashboardContainer/Panels/types/sections';
+
+import ConfigSegmented from '../../controls/ConfigSegmented/ConfigSegmented';
+import LegendColors from '../../controls/LegendColors/LegendColors';
+import type { LegendSeries } from '../../../useLegendSeries';
+
+import styles from './LegendSection.module.scss';
+
+type LegendSectionProps = SectionEditorProps<'legend'> & {
+	/** Panel's resolved series, forwarded by SectionSlot for the colors control. */
+	legendSeries?: LegendSeries[];
+};
+
+const POSITION_OPTIONS = [
+	{
+		value: DashboardtypesLegendPositionDTO.bottom,
+		label: 'Bottom',
+		icon: 'pos-bottom' as const,
+	},
+	{
+		value: DashboardtypesLegendPositionDTO.right,
+		label: 'Right',
+		icon: 'pos-right' as const,
+	},
+];
+
+/**
+ * Edits the `legend` slice of a panel spec: legend position and per-series color
+ * overrides. The colors control reads the panel's resolved series from context (the
+ * shared preview query) and writes `customColors` keyed by series label.
+ */
+function LegendSection({
+	value,
+	controls,
+	onChange,
+	legendSeries,
+}: LegendSectionProps): JSX.Element {
+	return (
+		<>
+			{controls.position && (
+				<div className={styles.field}>
+					<Typography.Text>Position</Typography.Text>
+					<ConfigSegmented
+						testId="panel-editor-v2-legend-position"
+						items={POSITION_OPTIONS}
+						value={value?.position}
+						onChange={(next): void =>
+							onChange({
+								...value,
+								position: next as DashboardtypesLegendPositionDTO,
+							})
+						}
+					/>
+				</div>
+			)}
+
+			{controls.colors && (
+				<div className={styles.field}>
+					<Typography.Text>Series colors</Typography.Text>
+					<LegendColors
+						series={legendSeries ?? []}
+						value={value?.customColors}
+						onChange={(customColors): void => onChange({ ...value, customColors })}
+					/>
+				</div>
+			)}
+		</>
+	);
+}
+
+export default LegendSection;

frontend/src/pages/DashboardPageV2/DashboardContainer/PanelEditor/ConfigPane/sections/LegendSection/__tests__/LegendSection.test.tsx

@@ -0,0 +1,68 @@
+import { fireEvent, render, screen } from '@testing-library/react';
+import { DashboardtypesLegendPositionDTO } from 'api/generated/services/sigNoz.schemas';
+
+import LegendSection from '../LegendSection';
+
+describe('LegendSection', () => {
+	it('renders the position toggle with both options when position is enabled', () => {
+		render(
+			<LegendSection
+				value={undefined}
+				controls={{ position: true }}
+				onChange={jest.fn()}
+			/>,
+		);
+
+		expect(
+			screen.getByTestId('panel-editor-v2-legend-position'),
+		).toBeInTheDocument();
+		expect(screen.getByText('Bottom')).toBeInTheDocument();
+		expect(screen.getByText('Right')).toBeInTheDocument();
+	});
+
+	it('renders nothing when position is not enabled', () => {
+		render(
+			<LegendSection value={undefined} controls={{}} onChange={jest.fn()} />,
+		);
+
+		expect(
+			screen.queryByTestId('panel-editor-v2-legend-position'),
+		).not.toBeInTheDocument();
+	});
+
+	it('writes the chosen position through onChange', () => {
+		const onChange = jest.fn();
+		render(
+			<LegendSection
+				value={{ position: undefined }}
+				controls={{ position: true }}
+				onChange={onChange}
+			/>,
+		);
+
+		fireEvent.click(screen.getByText('Right'));
+
+		expect(onChange).toHaveBeenCalledWith({ position: 'right' });
+	});
+
+	it('preserves other legend fields when changing position', () => {
+		const onChange = jest.fn();
+		render(
+			<LegendSection
+				value={{
+					position: DashboardtypesLegendPositionDTO.bottom,
+					customColors: { a: '#fff' },
+				}}
+				controls={{ position: true }}
+				onChange={onChange}
+			/>,
+		);
+
+		fireEvent.click(screen.getByText('Right'));
+
+		expect(onChange).toHaveBeenCalledWith({
+			position: 'right',
+			customColors: { a: '#fff' },
+		});
+	});
+});

frontend/src/pages/DashboardPageV2/DashboardContainer/PanelEditor/ConfigPane/sections/ThresholdsSection/ThresholdColorSelect.tsx

@@ -0,0 +1,50 @@
+import { ChevronDown } from '@signozhq/icons';
+import { ColorPicker } from 'antd';
+
+import styles from './ThresholdsSection.module.scss';
+
+interface ThresholdColorSelectProps {
+	value: string;
+	testId?: string;
+	onChange: (hex: string) => void;
+}
+
+// Named presets from the SigNoz palette (cherry / amber / forest / robin). They surface
+// as quick swatches in the picker; the full picker below covers any custom color.
+const PRESETS: { label: string; value: string }[] = [
+	{ label: 'Red', value: '#F1575F' },
+	{ label: 'Orange', value: '#F5B225' },
+	{ label: 'Green', value: '#2BB673' },
+	{ label: 'Blue', value: '#4E74F8' },
+];
+
+/**
+ * Threshold color control: an antd ColorPicker with the palette presets plus a full
+ * custom picker, in a single popover (so moving from the trigger into the picker never
+ * dismisses it). The trigger shows the current swatch and its preset name, or "Custom".
+ */
+function ThresholdColorSelect({
+	value,
+	testId,
+	onChange,
+}: ThresholdColorSelectProps): JSX.Element {
+	const current = PRESETS.find(
+		(p) => p.value.toLowerCase() === value?.toLowerCase(),
+	);
+
+	return (
+		<ColorPicker
+			value={value}
+			onChangeComplete={(c): void => onChange(c.toHexString())}
+			presets={[{ label: 'Defaults', colors: PRESETS.map((p) => p.value) }]}
+		>
+			<button type="button" className={styles.colorTrigger} data-testid={testId}>
+				<span className={styles.dot} style={{ backgroundColor: value }} />
+				<span className={styles.colorLabel}>{current?.label ?? 'Custom'}</span>
+				<ChevronDown size={13} />
+			</button>
+		</ColorPicker>
+	);
+}
+
+export default ThresholdColorSelect;

frontend/src/pages/DashboardPageV2/DashboardContainer/PanelEditor/ConfigPane/sections/ThresholdsSection/ThresholdRow.tsx

@@ -0,0 +1,180 @@
+import { type ChangeEvent, useEffect, useState } from 'react';
+import { Check, Pencil, Trash2, X } from '@signozhq/icons';
+import { Button } from '@signozhq/ui/button';
+import { Input } from '@signozhq/ui/input';
+import { Typography } from '@signozhq/ui/typography';
+import type { DashboardtypesThresholdWithLabelDTO } from 'api/generated/services/sigNoz.schemas';
+import YAxisUnitSelector from 'components/YAxisUnitSelector';
+import { YAxisSource } from 'components/YAxisUnitSelector/types';
+import { formatPanelValue } from 'pages/DashboardPageV2/DashboardContainer/Panels/utils/formatPanelValue';
+
+import ThresholdColorSelect from './ThresholdColorSelect';
+import {
+	isThresholdUnitIncompatible,
+	thresholdUnitCategories,
+} from './thresholdUnitCategories';
+
+import styles from './ThresholdsSection.module.scss';
+
+interface ThresholdRowProps {
+	index: number;
+	threshold: DashboardtypesThresholdWithLabelDTO;
+	/** Panel formatting unit — scopes the unit picker to its category (V1 parity). */
+	yAxisUnit?: string;
+	isEditing: boolean;
+	onEdit: () => void;
+	onSave: (next: DashboardtypesThresholdWithLabelDTO) => void;
+	onDiscard: () => void;
+	onRemove: () => void;
+}
+
+/**
+ * One threshold rule with V1-style view/edit modes. View mode shows a compact summary
+ * (color · value+unit · label) with Edit + Delete. Edit mode is a labelled form — color
+ * (preset/custom), value, unit (scoped to the y-axis unit's category), label — editing a
+ * local draft that's only committed on Save; Discard drops it.
+ */
+function ThresholdRow({
+	index,
+	threshold,
+	yAxisUnit,
+	isEditing,
+	onEdit,
+	onSave,
+	onDiscard,
+	onRemove,
+}: ThresholdRowProps): JSX.Element {
+	const [draft, setDraft] = useState(threshold);
+
+	// Snapshot the saved threshold into the draft each time we (re)enter edit mode, so
+	// Discard simply drops the draft and the next edit starts clean.
+	useEffect(() => {
+		if (isEditing) {
+			setDraft(threshold);
+		}
+		// eslint-disable-next-line react-hooks/exhaustive-deps -- snapshot only on edit entry
+	}, [isEditing]);
+
+	if (!isEditing) {
+		return (
+			<div className={styles.viewRow}>
+				<span className={styles.dot} style={{ backgroundColor: threshold.color }} />
+				<span className={styles.viewValue}>
+					{formatPanelValue(threshold.value, threshold.unit)}
+				</span>
+				{threshold.label && (
+					<span className={styles.viewLabel}>{threshold.label}</span>
+				)}
+				<div className={styles.spacer} />
+				<Button
+					type="button"
+					variant="ghost"
+					color="secondary"
+					size="icon"
+					aria-label={`Edit threshold ${index + 1}`}
+					data-testid={`threshold-edit-${index}`}
+					onClick={onEdit}
+				>
+					<Pencil size={14} />
+				</Button>
+				<Button
+					type="button"
+					variant="ghost"
+					color="destructive"
+					size="icon"
+					aria-label={`Remove threshold ${index + 1}`}
+					data-testid={`threshold-remove-${index}`}
+					onClick={onRemove}
+				>
+					<Trash2 size={14} />
+				</Button>
+			</div>
+		);
+	}
+
+	const handleValue = (e: ChangeEvent<HTMLInputElement>): void => {
+		const next = Number(e.target.value);
+		setDraft((d) => ({ ...d, value: Number.isNaN(next) ? d.value : next }));
+	};
+
+	return (
+		<div className={styles.editRow}>
+			<div className={styles.field}>
+				<Typography.Text className={styles.fieldLabel}>Color</Typography.Text>
+				<ThresholdColorSelect
+					value={draft.color}
+					testId={`threshold-color-${index}`}
+					onChange={(color): void => setDraft((d) => ({ ...d, color }))}
+				/>
+			</div>
+
+			<div className={styles.field}>
+				<Typography.Text className={styles.fieldLabel}>Value</Typography.Text>
+				<Input
+					testId={`threshold-value-${index}`}
+					type="number"
+					placeholder="Value"
+					value={draft.value}
+					onChange={handleValue}
+				/>
+			</div>
+
+			<div className={styles.field}>
+				<Typography.Text className={styles.fieldLabel}>Unit</Typography.Text>
+				<YAxisUnitSelector
+					containerClassName={styles.unitSelector}
+					data-testid={`threshold-unit-${index}`}
+					placeholder="Select unit"
+					source={YAxisSource.DASHBOARDS}
+					categoriesOverride={thresholdUnitCategories(yAxisUnit)}
+					value={draft.unit}
+					onChange={(unit): void => setDraft((d) => ({ ...d, unit }))}
+				/>
+				{isThresholdUnitIncompatible(draft.unit, yAxisUnit) && (
+					<Typography.Text
+						className={styles.invalidUnit}
+						data-testid={`threshold-unit-invalid-${index}`}
+					>
+						Threshold unit ({draft.unit}) is not valid with the y-axis unit (
+						{yAxisUnit})
+					</Typography.Text>
+				)}
+			</div>
+
+			<div className={styles.field}>
+				<Typography.Text className={styles.fieldLabel}>Label</Typography.Text>
+				<Input
+					testId={`threshold-label-${index}`}
+					placeholder="Optional"
+					value={draft.label ?? ''}
+					onChange={(e): void => setDraft((d) => ({ ...d, label: e.target.value }))}
+				/>
+			</div>
+
+			<div className={styles.actions}>
+				<Button
+					type="button"
+					variant="outlined"
+					color="secondary"
+					prefix={<X size={14} />}
+					data-testid={`threshold-discard-${index}`}
+					onClick={onDiscard}
+				>
+					Discard
+				</Button>
+				<Button
+					type="button"
+					variant="solid"
+					color="primary"
+					prefix={<Check size={14} />}
+					data-testid={`threshold-save-${index}`}
+					onClick={(): void => onSave(draft)}
+				>
+					Save
+				</Button>
+			</div>
+		</div>
+	);
+}
+
+export default ThresholdRow;

frontend/src/pages/DashboardPageV2/DashboardContainer/PanelEditor/ConfigPane/sections/ThresholdsSection/ThresholdsSection.module.scss

@@ -0,0 +1,104 @@
+.list {
+	display: flex;
+	flex-direction: column;
+	gap: 8px;
+}
+
+// ── View mode: compact summary row ──────────────────────────────────────────
+.viewRow {
+	display: flex;
+	align-items: center;
+	gap: 8px;
+	height: 40px;
+	padding: 0 4px 0 10px;
+	border: 1px solid var(--l2-border);
+	background-color: var(--l2-background);
+	border-radius: 6px;
+}
+
+.viewValue {
+	flex: none;
+	font-size: 13px;
+	font-weight: 500;
+	color: var(--text-vanilla-100);
+}
+
+.viewLabel {
+	overflow: hidden;
+	font-size: 12px;
+	color: var(--text-vanilla-400);
+	white-space: nowrap;
+	text-overflow: ellipsis;
+}
+
+.spacer {
+	flex: 1;
+}
+
+// ── Edit mode: labelled form ────────────────────────────────────────────────
+.editRow {
+	display: flex;
+	flex-direction: column;
+	gap: 12px;
+	padding: 12px;
+	background-color: var(--l2-background);
+	border: 1px solid var(--bg-robin-400);
+	border-radius: 6px;
+}
+
+.field {
+	display: flex;
+	flex-direction: column;
+	gap: 6px;
+}
+
+.fieldLabel {
+	font-size: 12px;
+	color: var(--text-vanilla-400);
+}
+
+.actions {
+	display: flex;
+	justify-content: flex-end;
+	gap: 8px;
+}
+
+// ── Shared ──────────────────────────────────────────────────────────────────
+.dot {
+	width: 12px;
+	height: 12px;
+	flex: none;
+	border-radius: 50%;
+}
+
+.colorTrigger {
+	display: flex;
+	align-items: center;
+	gap: 6px;
+	width: 100%;
+	height: 36px;
+	padding: 0 10px;
+	border: 1px solid var(--l2-border);
+	border-radius: 4px;
+	background: transparent;
+	color: var(--text-vanilla-100);
+	cursor: pointer;
+}
+
+.colorLabel {
+	flex: 1;
+	font-size: 13px;
+	text-align: left;
+}
+
+// Match Formatting: make the YAxisUnitSelector fill the row width.
+.unitSelector {
+	:global(.ant-select) {
+		width: 100%;
+	}
+}
+
+.invalidUnit {
+	font-size: 11px;
+	color: var(--bg-cherry-400);
+}

frontend/src/pages/DashboardPageV2/DashboardContainer/PanelEditor/ConfigPane/sections/ThresholdsSection/ThresholdsSection.tsx

@@ -0,0 +1,100 @@
+import { useState } from 'react';
+import { Plus } from '@signozhq/icons';
+import { Button } from '@signozhq/ui/button';
+import type { DashboardtypesThresholdWithLabelDTO } from 'api/generated/services/sigNoz.schemas';
+import type { SectionEditorProps } from 'pages/DashboardPageV2/DashboardContainer/Panels/types/sections';
+
+import ThresholdRow from './ThresholdRow';
+
+import styles from './ThresholdsSection.module.scss';
+
+// New thresholds default to red (the first palette preset); the user recolors per rule.
+const DEFAULT_THRESHOLD_COLOR = '#F1575F';
+
+type ThresholdsSectionProps = SectionEditorProps<'thresholds'> & {
+	/** Panel formatting unit; scopes each row's unit picker to its category (V1 parity). */
+	yAxisUnit?: string;
+};
+
+/**
+ * Edits the `thresholds` slice (TimeSeries / Bar) — a list of value + color + label
+ * rules drawn on the chart, each with V1-style view/edit modes. Only one row edits at a
+ * time; a freshly-added row opens in edit mode and is removed if discarded before saving.
+ * Number panels use a different (comparison-operator) threshold shape — separate editor.
+ */
+function ThresholdsSection({
+	value,
+	onChange,
+	yAxisUnit,
+}: ThresholdsSectionProps): JSX.Element {
+	const thresholds = value ?? [];
+	// Which row is being edited, and whether it was just added (so Discard removes it).
+	const [editingIndex, setEditingIndex] = useState<number | null>(null);
+	const [unsavedIndex, setUnsavedIndex] = useState<number | null>(null);
+
+	const addThreshold = (): void => {
+		const nextIndex = thresholds.length;
+		onChange([
+			...thresholds,
+			{ value: 0, color: DEFAULT_THRESHOLD_COLOR, label: '' },
+		]);
+		setEditingIndex(nextIndex);
+		setUnsavedIndex(nextIndex);
+	};
+
+	const saveAt =
+		(index: number) =>
+		(next: DashboardtypesThresholdWithLabelDTO): void => {
+			onChange(thresholds.map((t, i) => (i === index ? next : t)));
+			setEditingIndex(null);
+			setUnsavedIndex(null);
+		};
+
+	const removeAt = (index: number): void => {
+		onChange(thresholds.filter((_, i) => i !== index));
+		setEditingIndex(null);
+		setUnsavedIndex(null);
+	};
+
+	const discardAt = (index: number) => (): void => {
+		// Discarding a row that was never saved removes it; otherwise just exit edit.
+		if (index === unsavedIndex) {
+			removeAt(index);
+			return;
+		}
+		setEditingIndex(null);
+	};
+
+	return (
+		<div className={styles.list}>
+			{thresholds.map((threshold, index) => (
+				<ThresholdRow
+					// Thresholds have no stable id on the wire; index is the row identity.
+					// eslint-disable-next-line react/no-array-index-key
+					key={index}
+					index={index}
+					threshold={threshold}
+					yAxisUnit={yAxisUnit}
+					isEditing={editingIndex === index}
+					onEdit={(): void => setEditingIndex(index)}
+					onSave={saveAt(index)}
+					onDiscard={discardAt(index)}
+					onRemove={(): void => removeAt(index)}
+				/>
+			))}
+
+			<Button
+				type="button"
+				variant="dashed"
+				color="secondary"
+				prefix={<Plus size={14} />}
+				data-testid="panel-editor-v2-add-threshold"
+				onClick={addThreshold}
+			>
+				Add threshold
+			</Button>
+		</div>
+	);
+}
+
+export default ThresholdsSection;

frontend/src/pages/DashboardPageV2/DashboardContainer/PanelEditor/ConfigPane/sections/ThresholdsSection/__tests__/ThresholdsSection.test.tsx

@@ -0,0 +1,120 @@
+import { useState } from 'react';
+import { fireEvent, render, screen } from '@testing-library/react';
+import type { DashboardtypesThresholdWithLabelDTO } from 'api/generated/services/sigNoz.schemas';
+
+import ThresholdsSection from '../ThresholdsSection';
+
+const THRESHOLDS: DashboardtypesThresholdWithLabelDTO[] = [
+	{ value: 80, color: '#F5B225', label: 'High', unit: 'percent' },
+];
+
+// Stateful harness for flows that depend on the value updating (add/discard).
+function Harness({ yAxisUnit }: { yAxisUnit?: string }): JSX.Element {
+	const [value, setValue] = useState<DashboardtypesThresholdWithLabelDTO[]>([]);
+	return (
+		<ThresholdsSection value={value} onChange={setValue} yAxisUnit={yAxisUnit} />
+	);
+}
+
+describe('ThresholdsSection', () => {
+	it('renders only the add button when there are no thresholds', () => {
+		render(<ThresholdsSection value={undefined} onChange={jest.fn()} />);
+
+		expect(
+			screen.getByTestId('panel-editor-v2-add-threshold'),
+		).toBeInTheDocument();
+		expect(screen.queryByTestId('threshold-edit-0')).not.toBeInTheDocument();
+	});
+
+	it('shows an existing threshold in view mode (no form until Edit)', () => {
+		render(<ThresholdsSection value={THRESHOLDS} onChange={jest.fn()} />);
+
+		expect(screen.getByTestId('threshold-edit-0')).toBeInTheDocument();
+		expect(screen.getByText('High')).toBeInTheDocument();
+		// The editable fields are hidden until the row is edited.
+		expect(screen.queryByTestId('threshold-value-0')).not.toBeInTheDocument();
+	});
+
+	it('edits a threshold value and commits it on Save', () => {
+		const onChange = jest.fn();
+		render(<ThresholdsSection value={THRESHOLDS} onChange={onChange} />);
+
+		fireEvent.click(screen.getByTestId('threshold-edit-0'));
+		expect(screen.getByTestId('threshold-value-0')).toHaveValue(80);
+
+		fireEvent.change(screen.getByTestId('threshold-value-0'), {
+			target: { value: '90' },
+		});
+		fireEvent.click(screen.getByTestId('threshold-save-0'));
+
+		expect(onChange).toHaveBeenCalledWith([
+			{ value: 90, color: '#F5B225', label: 'High', unit: 'percent' },
+		]);
+	});
+
+	it('does not commit edits when Discard is clicked', () => {
+		const onChange = jest.fn();
+		render(<ThresholdsSection value={THRESHOLDS} onChange={onChange} />);
+
+		fireEvent.click(screen.getByTestId('threshold-edit-0'));
+		fireEvent.change(screen.getByTestId('threshold-value-0'), {
+			target: { value: '90' },
+		});
+		fireEvent.click(screen.getByTestId('threshold-discard-0'));
+
+		expect(onChange).not.toHaveBeenCalled();
+		// Back to view mode.
+		expect(screen.queryByTestId('threshold-value-0')).not.toBeInTheDocument();
+		expect(screen.getByTestId('threshold-edit-0')).toBeInTheDocument();
+	});
+
+	it('removes a threshold from view mode', () => {
+		const onChange = jest.fn();
+		render(<ThresholdsSection value={THRESHOLDS} onChange={onChange} />);
+
+		fireEvent.click(screen.getByTestId('threshold-remove-0'));
+
+		expect(onChange).toHaveBeenCalledWith([]);
+	});
+
+	it('adds a threshold that opens in edit mode, and discards it away', () => {
+		render(<Harness />);
+
+		fireEvent.click(screen.getByTestId('panel-editor-v2-add-threshold'));
+		// New row opens in edit mode.
+		expect(screen.getByTestId('threshold-value-0')).toBeInTheDocument();
+
+		fireEvent.click(screen.getByTestId('threshold-discard-0'));
+		// Discarding a never-saved row removes it entirely.
+		expect(screen.queryByTestId('threshold-value-0')).not.toBeInTheDocument();
+		expect(screen.queryByTestId('threshold-edit-0')).not.toBeInTheDocument();
+	});
+
+	it('flags a threshold unit in a different category than the y-axis unit', () => {
+		render(
+			<ThresholdsSection
+				value={[{ value: 80, color: '#F5B225', label: '', unit: 'ms' }]}
+				yAxisUnit="bytes"
+				onChange={jest.fn()}
+			/>,
+		);
+
+		fireEvent.click(screen.getByTestId('threshold-edit-0'));
+		expect(screen.getByTestId('threshold-unit-invalid-0')).toBeInTheDocument();
+	});
+
+	it('does not flag a threshold unit in the same category as the y-axis unit', () => {
+		render(
+			<ThresholdsSection
+				value={[{ value: 80, color: '#F5B225', label: '', unit: 'ms' }]}
+				yAxisUnit="s"
+				onChange={jest.fn()}
+			/>,
+		);
+
+		fireEvent.click(screen.getByTestId('threshold-edit-0'));
+		expect(
+			screen.queryByTestId('threshold-unit-invalid-0'),
+		).not.toBeInTheDocument();
+	});
+});

frontend/src/pages/DashboardPageV2/DashboardContainer/PanelEditor/ConfigPane/sections/ThresholdsSection/thresholdUnitCategories.ts

@@ -0,0 +1,54 @@
+import {
+	type YAxisCategory,
+	YAxisSource,
+} from 'components/YAxisUnitSelector/types';
+import {
+	getYAxisCategories,
+	mapMetricUnitToUniversalUnit,
+} from 'components/YAxisUnitSelector/utils';
+
+// The unit category (Time, Data, …) a unit belongs to, or undefined if unrecognized.
+function categoryForUnit(unit: string): YAxisCategory | undefined {
+	const universal = mapMetricUnitToUniversalUnit(unit);
+	return getYAxisCategories(YAxisSource.DASHBOARDS).find((c) =>
+		c.units.some((u) => u.id === universal),
+	);
+}
+
+/**
+ * Restricts the threshold unit picker to the panel's y-axis unit family, mirroring V1:
+ * a threshold is only meaningfully comparable to the axis when it shares its category
+ * (e.g. an `ms` axis → only Time units). Returns the single matching category, or
+ * `undefined` (all categories) when the panel has no unit set or it can't be mapped.
+ */
+export function thresholdUnitCategories(
+	yAxisUnit: string | undefined,
+): YAxisCategory[] | undefined {
+	if (!yAxisUnit) {
+		return undefined;
+	}
+	const category = categoryForUnit(yAxisUnit);
+	return category ? [category] : undefined;
+}
+
+/**
+ * True when a threshold's unit belongs to a different category than the panel's y-axis
+ * unit (so the values can't be compared) — drives the V1-style mismatch message. Only
+ * flags when both units are set and resolve to distinct categories (e.g. a stale `ms`
+ * threshold left over after the axis unit was changed to bytes).
+ */
+export function isThresholdUnitIncompatible(
+	thresholdUnit: string | undefined,
+	yAxisUnit: string | undefined,
+): boolean {
+	if (!thresholdUnit || !yAxisUnit) {
+		return false;
+	}
+	const thresholdCategory = categoryForUnit(thresholdUnit);
+	const axisCategory = categoryForUnit(yAxisUnit);
+	return Boolean(
+		thresholdCategory &&
+		axisCategory &&
+		thresholdCategory.name !== axisCategory.name,
+	);
+}

frontend/src/pages/DashboardPageV2/DashboardContainer/PanelEditor/ConfigPane/sections/VisualizationSection/VisualizationSection.module.scss

@@ -0,0 +1,5 @@
+.field {
+	display: flex;
+	flex-direction: column;
+	gap: 8px;
+}

frontend/src/pages/DashboardPageV2/DashboardContainer/PanelEditor/ConfigPane/sections/VisualizationSection/VisualizationSection.tsx

@@ -0,0 +1,67 @@
+import { Typography } from '@signozhq/ui/typography';
+import { DashboardtypesTimePreferenceDTO } from 'api/generated/services/sigNoz.schemas';
+import type { SectionEditorProps } from 'pages/DashboardPageV2/DashboardContainer/Panels/types/sections';
+
+import ConfigSelect from '../../controls/ConfigSelect/ConfigSelect';
+import ConfigSwitch from '../../controls/ConfigSwitch/ConfigSwitch';
+import { TIME_PREFERENCE_OPTIONS } from './timePreferenceOptions';
+
+import styles from './VisualizationSection.module.scss';
+
+/**
+ * Edits the `visualization` slice: the per-panel time preference (all kinds), bar
+ * stacking (`stackedBarChart`, Bar only), and gap filling (`fillSpans`, TimeSeries
+ * only). Each control is gated by its `controls` flag, so a kind only renders — and only
+ * writes — the visualization fields its spec actually supports.
+ */
+function VisualizationSection({
+	value,
+	controls,
+	onChange,
+}: SectionEditorProps<'visualization'>): JSX.Element {
+	return (
+		<>
+			{controls.timePreference && (
+				<div className={styles.field}>
+					<Typography.Text>Panel time preference</Typography.Text>
+					<ConfigSelect
+						testId="panel-editor-v2-time-preference"
+						placeholder="Select time scope…"
+						value={value?.timePreference}
+						items={TIME_PREFERENCE_OPTIONS}
+						onChange={(next): void =>
+							onChange({
+								...value,
+								timePreference: next as DashboardtypesTimePreferenceDTO,
+							})
+						}
+					/>
+				</div>
+			)}
+
+			{controls.stacking && (
+				<ConfigSwitch
+					testId="panel-editor-v2-stacked-bar-chart"
+					title="Stack series"
+					description="Stack bars from all series on top of each other"
+					value={value?.stackedBarChart ?? false}
+					onChange={(checked): void =>
+						onChange({ ...value, stackedBarChart: checked })
+					}
+				/>
+			)}
+
+			{controls.fillSpans && (
+				<ConfigSwitch
+					testId="panel-editor-v2-fill-spans"
+					title="Fill gaps"
+					description="Fill gaps in data with 0 for continuity"
+					value={value?.fillSpans ?? false}
+					onChange={(checked): void => onChange({ ...value, fillSpans: checked })}
+				/>
+			)}
+		</>
+	);
+}
+
+export default VisualizationSection;

frontend/src/pages/DashboardPageV2/DashboardContainer/PanelEditor/ConfigPane/sections/VisualizationSection/__tests__/VisualizationSection.test.tsx

@@ -0,0 +1,102 @@
+import { fireEvent, render, screen } from '@testing-library/react';
+import userEvent from '@testing-library/user-event';
+import { DashboardtypesTimePreferenceDTO } from 'api/generated/services/sigNoz.schemas';
+
+import VisualizationSection from '../VisualizationSection';
+
+async function pickOption(triggerTestId: string, label: string): Promise<void> {
+	const user = userEvent.setup();
+	await user.click(screen.getByTestId(triggerTestId));
+	await user.click(await screen.findByRole('option', { name: label }));
+}
+
+describe('VisualizationSection', () => {
+	it('renders every control that is enabled', () => {
+		render(
+			<VisualizationSection
+				value={undefined}
+				controls={{ timePreference: true, stacking: true, fillSpans: true }}
+				onChange={jest.fn()}
+			/>,
+		);
+
+		expect(
+			screen.getByTestId('panel-editor-v2-time-preference'),
+		).toBeInTheDocument();
+		expect(
+			screen.getByTestId('panel-editor-v2-stacked-bar-chart'),
+		).toBeInTheDocument();
+		expect(screen.getByTestId('panel-editor-v2-fill-spans')).toBeInTheDocument();
+	});
+
+	it('renders only the controls whose flag is set', () => {
+		render(
+			<VisualizationSection
+				value={undefined}
+				controls={{ timePreference: true }}
+				onChange={jest.fn()}
+			/>,
+		);
+
+		expect(
+			screen.getByTestId('panel-editor-v2-time-preference'),
+		).toBeInTheDocument();
+		expect(
+			screen.queryByTestId('panel-editor-v2-stacked-bar-chart'),
+		).not.toBeInTheDocument();
+		expect(
+			screen.queryByTestId('panel-editor-v2-fill-spans'),
+		).not.toBeInTheDocument();
+	});
+
+	it('writes the chosen time preference through the dropdown', async () => {
+		const onChange = jest.fn();
+		render(
+			<VisualizationSection
+				value={undefined}
+				controls={{ timePreference: true }}
+				onChange={onChange}
+			/>,
+		);
+
+		await pickOption('panel-editor-v2-time-preference', 'Last 1 hr');
+
+		expect(onChange).toHaveBeenCalledWith({ timePreference: 'last_1_hr' });
+	});
+
+	it('toggles bar stacking through onChange, preserving other fields', () => {
+		const onChange = jest.fn();
+		render(
+			<VisualizationSection
+				value={{
+					timePreference: DashboardtypesTimePreferenceDTO.global_time,
+					stackedBarChart: false,
+				}}
+				controls={{ stacking: true }}
+				onChange={onChange}
+			/>,
+		);
+
+		fireEvent.click(screen.getByTestId('panel-editor-v2-stacked-bar-chart'));
+
+		expect(onChange).toHaveBeenCalledWith({
+			timePreference: 'global_time',
+			stackedBarChart: true,
+		});
+	});
+
+	it('toggles fill spans through onChange', () => {
+		const onChange = jest.fn();
+		render(
+			<VisualizationSection
+				value={{ fillSpans: false }}
+				controls={{ fillSpans: true }}
+				onChange={onChange}
+			/>,
+		);
+
+		fireEvent.click(screen.getByTestId('panel-editor-v2-fill-spans'));
+
+		expect(onChange).toHaveBeenCalledWith({ fillSpans: true });
+	});
+});

frontend/src/pages/DashboardPageV2/DashboardContainer/PanelEditor/ConfigPane/sections/VisualizationSection/timePreferenceOptions.ts

@@ -0,0 +1,18 @@
+import { DashboardtypesTimePreferenceDTO } from 'api/generated/services/sigNoz.schemas';
+
+import type { ConfigSelectItem } from '../../controls/ConfigSelect/ConfigSelect';
+
+// Per-panel time scope. "Global Time" follows the dashboard's time picker; the rest pin
+// the panel to a fixed relative window regardless of the dashboard range (V1 parity).
+export const TIME_PREFERENCE_OPTIONS: ConfigSelectItem[] = [
+	{ value: DashboardtypesTimePreferenceDTO.global_time, label: 'Global Time' },
+	{ value: DashboardtypesTimePreferenceDTO.last_5_min, label: 'Last 5 min' },
+	{ value: DashboardtypesTimePreferenceDTO.last_15_min, label: 'Last 15 min' },
+	{ value: DashboardtypesTimePreferenceDTO.last_30_min, label: 'Last 30 min' },
+	{ value: DashboardtypesTimePreferenceDTO.last_1_hr, label: 'Last 1 hr' },
+	{ value: DashboardtypesTimePreferenceDTO.last_6_hr, label: 'Last 6 hr' },
+	{ value: DashboardtypesTimePreferenceDTO.last_1_day, label: 'Last 1 day' },
+	{ value: DashboardtypesTimePreferenceDTO.last_3_days, label: 'Last 3 days' },
+	{ value: DashboardtypesTimePreferenceDTO.last_1_week, label: 'Last 1 week' },
+	{ value: DashboardtypesTimePreferenceDTO.last_1_month, label: 'Last 1 month' },
+];

frontend/src/pages/DashboardPageV2/DashboardContainer/PanelEditor/Header/Header.module.scss

@@ -0,0 +1,22 @@
+.header {
+	display: flex;
+	align-items: center;
+	justify-content: space-between;
+	gap: 12px;
+	padding: 12px 16px;
+	background-color: var(--l2-background);
+	border-bottom: 1px solid var(--l2-border);
+}
+
+.title {
+	display: flex;
+	align-items: center;
+	gap: 8px;
+	min-width: 0;
+}
+
+.actions {
+	display: flex;
+	align-items: center;
+	gap: 8px;
+}

frontend/src/pages/DashboardPageV2/DashboardContainer/PanelEditor/Header/Header.tsx

@@ -0,0 +1,51 @@
+import { X } from '@signozhq/icons';
+import { Button } from '@signozhq/ui/button';
+import { Divider } from '@signozhq/ui/divider';
+import { Typography } from '@signozhq/ui/typography';
+
+import styles from './Header.module.scss';
+
+interface HeaderProps {
+	isDirty: boolean;
+	isSaving: boolean;
+	onSave: () => void;
+	onClose: () => void;
+}
+
+function Header({
+	isDirty,
+	isSaving,
+	onSave,
+	onClose,
+}: HeaderProps): JSX.Element {
+	return (
+		<div className={styles.header}>
+			<div className={styles.title}>
+				<Button
+					variant="ghost"
+					color="secondary"
+					size="icon"
+					suffix={<X size={14} />}
+					data-testid="panel-editor-v2-close"
+					onClick={onClose}
+				/>
+				<Divider type="vertical" />
+				<Typography.Text>Configure panel</Typography.Text>
+			</div>
+			<div className={styles.actions}>
+				<Button
+					variant="solid"
+					color="primary"
+					data-testid="panel-editor-v2-save"
+					disabled={!isDirty || isSaving}
+					loading={isSaving}
+					onClick={onSave}
+				>
+					Save changes
+				</Button>
+			</div>
+		</div>
+	);
+}
+
+export default Header;

frontend/src/pages/DashboardPageV2/DashboardContainer/PanelEditor/PanelEditor.globals.scss

@@ -0,0 +1,21 @@
+/**
+ * The panel editor renders as a full-screen overlay (`PanelEditor.module.scss` `.root`,
+ * z-index: 1000). The editor's own floating UI (Select dropdowns) is rendered inside the
+ * overlay (withPortal={false}), so it needs no z-index help.
+ *
+ * The ⌘K command palette, however, is a global component mounted at the app root that
+ * portals to <body> as a sibling of the overlay — so without a higher z-index its dialog
+ * paints behind. This rule lifts it above the overlay. It must be global (the dialog lives
+ * at the <body> root) but is gated on the `panel-editor-open` body class the editor toggles
+ * while mounted, and scoped via :has([cmdk-root]) so no other dialog is affected.
+ */
+
+body.panel-editor-open {
+	[data-slot='dialog-content']:has([cmdk-root]) {
+		z-index: 1100;
+	}
+
+	[data-slot='dialog-overlay']:has(+ [data-slot='dialog-content'] [cmdk-root]) {
+		z-index: 1099;
+	}
+}

frontend/src/pages/DashboardPageV2/DashboardContainer/PanelEditor/PanelEditor.module.scss

@@ -0,0 +1,95 @@
+@keyframes panel-editor-backdrop-in {
+	from {
+		opacity: 0;
+	}
+	to {
+		opacity: 1;
+	}
+}
+
+@keyframes panel-editor-backdrop-out {
+	from {
+		opacity: 1;
+	}
+	to {
+		opacity: 0;
+	}
+}
+
+@keyframes panel-editor-modal-in {
+	from {
+		opacity: 0;
+		transform: translateY(8px) scale(0.98);
+	}
+	to {
+		opacity: 1;
+		transform: none;
+	}
+}
+
+@keyframes panel-editor-modal-out {
+	from {
+		opacity: 1;
+		transform: none;
+	}
+	to {
+		opacity: 0;
+		transform: translateY(8px) scale(0.98);
+	}
+}
+
+.root {
+	position: fixed;
+	inset: 0;
+	z-index: 1000;
+	display: flex;
+	// Inset the modal from every edge so the dimmed backdrop shows around it.
+	padding: 18px;
+	background: rgba(0, 0, 0, 0.55);
+	animation: panel-editor-backdrop-in 160ms ease-out;
+}
+
+// The modal surface: a bordered, rounded card that fills the padded backdrop.
+.modal {
+	display: flex;
+	flex: 1;
+	flex-direction: column;
+	min-height: 0;
+	overflow: hidden;
+	background: var(--l1-background);
+	border: 1px solid var(--l2-border);
+	border-radius: 4px;
+	box-shadow: 0 16px 48px rgba(0, 0, 0, 0.4);
+	animation: panel-editor-modal-in 220ms cubic-bezier(0.16, 1, 0.3, 1);
+}
+
+// Closing: play the reverse keyframes and hold the end frame (`forwards`) so the
+// overlay stays faded out until `onAnimationEnd` unmounts it.
+.closing {
+	animation: panel-editor-backdrop-out 180ms ease-in forwards;
+
+	.modal {
+		animation: panel-editor-modal-out 180ms ease-in forwards;
+	}
+}
+
+// Respect reduced-motion: snap in/out with no transform or fade choreography.
+@media (prefers-reduced-motion: reduce) {
+	.root,
+	.modal,
+	.closing,
+	.closing .modal {
+		animation: none;
+	}
+}
+
+.left {
+	display: flex;
+	flex-direction: column;
+	height: 100%;
+	min-height: 0;
+}
+
+.right {
+	display: flex;
+}

frontend/src/pages/DashboardPageV2/DashboardContainer/PanelEditor/PreviewPane/PreviewPane.module.scss

@@ -0,0 +1,60 @@
+.preview {
+	display: flex;
+	flex-direction: column;
+	flex: 1;
+	min-height: 0;
+	gap: 16px;
+	padding: 24px;
+	background-image: radial-gradient(var(--l2-border) 1px, transparent 0);
+	background-size: 20px 20px;
+	border-bottom: 1px solid var(--l2-border);
+}
+
+.header {
+	width: 100%;
+	box-sizing: border-box;
+	display: flex;
+	align-items: center;
+	justify-content: space-between;
+}
+
+.queryType {
+	display: inline-flex;
+	padding: 4px 8px 4px 6px;
+	align-items: center;
+	gap: 6px;
+	border-radius: 4px;
+	background: var(--l3-background);
+	backdrop-filter: blur(6px);
+	width: fit-content;
+}
+
+.container {
+	display: flex;
+	flex: 1;
+	min-width: 0;
+	min-height: 0;
+}
+
+.surface {
+	flex: 1;
+	min-width: 0;
+	min-height: 0;
+	border: 1px solid var(--l2-border);
+	border-radius: 4px;
+	overflow: hidden;
+	display: flex;
+	background: var(--l2-background);
+	padding: 8px;
+}
+
+.state {
+	flex: 1;
+	display: flex;
+	align-items: center;
+	justify-content: center;
+	padding: 24px;
+	color: var(--bg-vanilla-400, #8993ae);
+	font-size: 13px;
+	text-align: center;
+}

frontend/src/pages/DashboardPageV2/DashboardContainer/PanelEditor/PreviewPane/PreviewPane.tsx

@@ -0,0 +1,101 @@
+import { Spin } from 'antd';
+import { Loader, Spline } from '@signozhq/icons';
+import type { DashboardtypesPanelDTO } from 'api/generated/services/sigNoz.schemas';
+import { PanelMode } from 'container/DashboardContainer/visualization/panels/types';
+import QueryTypeTag from 'container/NewWidget/LeftContainer/QueryTypeTag';
+import DateTimeSelectionV2 from 'container/TopNav/DateTimeSelectionV2';
+import { DEFAULT_TIME_RANGE } from 'container/TopNav/DateTimeSelectionV2/constants';
+import type { RenderablePanelDefinition } from 'pages/DashboardPageV2/DashboardContainer/Panels/types/panelDefinition';
+import type { PanelQueryData } from 'pages/DashboardPageV2/DashboardContainer/queryV5/types';
+import { EQueryType } from 'types/common/dashboard';
+
+import type {
+	PreviewTimeRange,
+	UsePreviewQueryResult,
+} from '../usePreviewQuery';
+
+import styles from './PreviewPane.module.scss';
+
+interface PreviewPaneProps {
+	panelId: string;
+	panel: DashboardtypesPanelDTO;
+	/** Resolved definition for the panel kind; undefined when the kind is unsupported. */
+	panelDef: RenderablePanelDefinition | undefined;
+	data: PanelQueryData;
+	isLoading: boolean;
+	error: Error | null;
+	/** Editor-local time selection (never touches global Redux time or the URL). */
+	selectedInterval: UsePreviewQueryResult['selectedInterval'];
+	timeRange: PreviewTimeRange;
+	onTimeChange: UsePreviewQueryResult['onTimeChange'];
+}
+
+/**
+ * Live preview for the panel editor. Presentational: the draft panel renders through the
+ * same registry the dashboard grid uses (`panelDef.Renderer`), so the preview is the
+ * production renderer — only `panelMode` differs (DASHBOARD_EDIT). The query + editor-local
+ * time are owned by the editor root (`usePreviewQuery`) and passed in, so the same result
+ * is shared with the config pane.
+ */
+function PreviewPane({
+	panelId,
+	panel,
+	panelDef,
+	data,
+	isLoading,
+	error,
+	selectedInterval,
+	timeRange,
+	onTimeChange,
+}: PreviewPaneProps): JSX.Element {
+	return (
+		<div className={styles.preview}>
+			<div className={styles.header}>
+				<div className={styles.queryType}>
+					<Spline size={14} />
+					Plotted with <QueryTypeTag queryType={EQueryType.QUERY_BUILDER} />
+				</div>
+				{/* Shared time picker in modal mode: edits a local window via onTimeChange
+				    and never touches global Redux time or the URL (disableUrlSync). */}
+				<DateTimeSelectionV2
+					showAutoRefresh
+					showRefreshText={false}
+					hideShareModal
+					disableUrlSync
+					isModalTimeSelection
+					defaultRelativeTime={DEFAULT_TIME_RANGE}
+					onTimeChange={onTimeChange}
+					modalSelectedInterval={selectedInterval}
+					modalInitialStartTime={timeRange.startMs}
+					modalInitialEndTime={timeRange.endMs}
+				/>
+			</div>
+			<div className={styles.container}>
+				<div className={styles.surface}>
+					{/* eslint-disable-next-line no-nested-ternary -- 3-way branch on render state */}
+					{!panelDef ? (
+						<div className={styles.state} data-testid="panel-editor-v2-unknown-kind">
+							This panel type is not yet supported in V2.
+						</div>
+					) : isLoading && !data.response ? (
+						<div className={styles.state} data-testid="panel-editor-v2-loading">
+							<Spin indicator={<Loader size={14} className="animate-spin" />} />
+						</div>
+					) : (
+						<panelDef.Renderer
+							panelId={panelId}
+							panel={panel}
+							data={data}
+							isLoading={isLoading}
+							error={error}
+							panelMode={PanelMode.DASHBOARD_EDIT}
+							enableDrillDown={false}
+						/>
+					)}
+				</div>
+			</div>
+		</div>
+	);
+}
+
+export default PreviewPane;

frontend/src/pages/DashboardPageV2/DashboardContainer/PanelEditor/QueryBuilderPlaceholder/QueryBuilderPlaceholder.module.scss

@@ -0,0 +1,12 @@
+.placeholder {
+	display: flex;
+	align-items: center;
+	justify-content: center;
+	gap: 8px;
+	min-height: 30%;
+	margin: 0 16px 16px;
+	border: 1px dashed var(--l2-border);
+	border-radius: 4px;
+	color: var(--l2-foreground);
+	font-size: 13px;
+}

frontend/src/pages/DashboardPageV2/DashboardContainer/PanelEditor/QueryBuilderPlaceholder/QueryBuilderPlaceholder.tsx

@@ -0,0 +1,23 @@
+import { Terminal } from '@signozhq/icons';
+import { Typography } from '@signozhq/ui/typography';
+
+import styles from './QueryBuilderPlaceholder.module.scss';
+
+/**
+ * Placeholder for the query builder in the panel editor's left pane. Milestone 2
+ * replaces this with the shared `QueryBuilderV2`, wired through `fromPerses` /
+ * `toPerses` so query edits flow into the draft and re-fetch the preview.
+ */
+function QueryBuilderPlaceholder(): JSX.Element {
+	return (
+		<div
+			className={styles.placeholder}
+			data-testid="panel-editor-v2-query-placeholder"
+		>
+			<Terminal size={16} />
+			<Typography.Text>Query builder coming soon</Typography.Text>
+		</div>
+	);
+}
+
+export default QueryBuilderPlaceholder;

frontend/src/pages/DashboardPageV2/DashboardContainer/PanelEditor/__tests__/ConfigPane.test.tsx

@@ -0,0 +1,67 @@
+import { fireEvent, render, screen } from '@testing-library/react';
+import type { DashboardtypesPanelSpecDTO } from 'api/generated/services/sigNoz.schemas';
+
+import ConfigPane from '../ConfigPane/ConfigPane';
+
+function spec(unit?: string): DashboardtypesPanelSpecDTO {
+	return {
+		display: { name: 'CPU', description: 'usage' },
+		plugin: {
+			kind: 'signoz/TimeSeriesPanel',
+			spec: unit ? { formatting: { unit } } : {},
+		},
+		queries: [],
+	} as unknown as DashboardtypesPanelSpecDTO;
+}
+
+function renderConfigPane(
+	overrides: Partial<React.ComponentProps<typeof ConfigPane>> = {},
+): React.ComponentProps<typeof ConfigPane> {
+	const props: React.ComponentProps<typeof ConfigPane> = {
+		panelKind: 'signoz/TimeSeriesPanel',
+		spec: spec(),
+		onChangeSpec: jest.fn(),
+		legendSeries: [],
+		...overrides,
+	};
+	render(<ConfigPane {...props} />);
+	return props;
+}
+
+describe('ConfigPane', () => {
+	it('renders the seeded title and description', () => {
+		renderConfigPane();
+
+		expect(screen.getByTestId('panel-editor-v2-title')).toHaveValue('CPU');
+		expect(screen.getByTestId('panel-editor-v2-description')).toHaveValue(
+			'usage',
+		);
+	});
+
+	it('reports title edits through onChangeSpec (into spec.display)', () => {
+		const { onChangeSpec } = renderConfigPane();
+
+		fireEvent.change(screen.getByTestId('panel-editor-v2-title'), {
+			target: { value: 'Memory' },
+		});
+
+		expect(onChangeSpec).toHaveBeenCalledWith(
+			expect.objectContaining({
+				display: { name: 'Memory', description: 'usage' },
+			}),
+		);
+	});
+
+	it('renders the Formatting section for a kind that declares it', () => {
+		renderConfigPane();
+		// The TimeSeries kind declares a Formatting section; its collapsible header shows.
+		expect(screen.getByTestId('config-section-Formatting')).toBeInTheDocument();
+	});
+
+	it('omits the Formatting section for an unknown kind', () => {
+		renderConfigPane({ panelKind: 'signoz/UnknownPanel' });
+		expect(
+			screen.queryByTestId('config-section-Formatting'),
+		).not.toBeInTheDocument();
+	});
+});

frontend/src/pages/DashboardPageV2/DashboardContainer/PanelEditor/__tests__/usePanelEditorDraft.test.ts

@@ -0,0 +1,80 @@
+import { act, renderHook } from '@testing-library/react';
+import type { DashboardtypesPanelDTO } from 'api/generated/services/sigNoz.schemas';
+
+import { usePanelEditorDraft } from '../usePanelEditorDraft';
+
+function panel(name = 'CPU', description = 'usage'): DashboardtypesPanelDTO {
+	return {
+		kind: 'Panel',
+		spec: {
+			display: { name, description },
+			plugin: { kind: 'signoz/TimeSeriesPanel', spec: {} },
+			queries: [],
+		},
+	} as unknown as DashboardtypesPanelDTO;
+}
+
+describe('usePanelEditorDraft', () => {
+	it('exposes the panel spec and starts clean', () => {
+		const { result } = renderHook(() => usePanelEditorDraft(panel()));
+
+		expect(result.current.spec).toBe(result.current.draft.spec);
+		expect(result.current.spec.display?.name).toBe('CPU');
+		expect(result.current.isDirty).toBe(false);
+	});
+
+	it('flags dirty and writes through on a display (title) edit via setSpec', () => {
+		const { result } = renderHook(() => usePanelEditorDraft(panel()));
+
+		act(() =>
+			result.current.setSpec({
+				...result.current.spec,
+				display: { ...result.current.spec.display, name: 'Memory' },
+			}),
+		);
+
+		expect(result.current.isDirty).toBe(true);
+		expect(result.current.draft.spec?.display?.name).toBe('Memory');
+	});
+
+	it('flags dirty on a plugin-spec (non-display) edit', () => {
+		const { result } = renderHook(() => usePanelEditorDraft(panel()));
+
+		act(() =>
+			result.current.setSpec({
+				...result.current.spec,
+				plugin: {
+					kind: 'signoz/TimeSeriesPanel',
+					spec: { formatting: { unit: 'bytes' } },
+				},
+			} as typeof result.current.spec),
+		);
+
+		expect(result.current.isDirty).toBe(true);
+		expect(
+			(
+				result.current.draft.spec?.plugin?.spec as {
+					formatting?: { unit?: string };
+				}
+			)?.formatting?.unit,
+		).toBe('bytes');
+	});
+
+	it('reset restores the spec and clears dirty after an edit', () => {
+		const { result } = renderHook(() => usePanelEditorDraft(panel()));
+
+		act(() =>
+			result.current.setSpec({
+				...result.current.spec,
+				plugin: {
+					kind: 'signoz/TimeSeriesPanel',
+					spec: { formatting: { unit: 'ms' } },
+				},
+			} as typeof result.current.spec),
+		);
+		act(() => result.current.reset());
+
+		expect(result.current.isDirty).toBe(false);
+		expect(result.current.spec.display?.name).toBe('CPU');
+	});
+});

frontend/src/pages/DashboardPageV2/DashboardContainer/PanelEditor/__tests__/usePanelEditorSave.test.ts

@@ -0,0 +1,82 @@
+import { renderHook } from '@testing-library/react';
+import {
+	getGetDashboardV2QueryKey,
+	usePatchDashboardV2,
+} from 'api/generated/services/dashboard';
+import type { DashboardtypesPanelSpecDTO } from 'api/generated/services/sigNoz.schemas';
+
+import { usePanelEditorSave } from '../usePanelEditorSave';
+
+const mockInvalidateQueries = jest.fn();
+jest.mock('react-query', () => ({
+	useQueryClient: (): { invalidateQueries: jest.Mock } => ({
+		invalidateQueries: mockInvalidateQueries,
+	}),
+}));
+
+jest.mock('api/generated/services/dashboard', () => ({
+	usePatchDashboardV2: jest.fn(),
+	getGetDashboardV2QueryKey: jest.fn(() => ['/api/v2/dashboards/dash-1']),
+}));
+
+const mockUsePatch = usePatchDashboardV2 as unknown as jest.Mock;
+const mockGetQueryKey = getGetDashboardV2QueryKey as unknown as jest.Mock;
+
+describe('usePanelEditorSave', () => {
+	const mutateAsync = jest.fn().mockResolvedValue(undefined);
+
+	beforeEach(() => {
+		jest.clearAllMocks();
+		mockUsePatch.mockReturnValue({
+			mutateAsync,
+			isLoading: false,
+			error: null,
+		});
+	});
+
+	it('emits an add patch replacing the whole panel spec and invalidates the dashboard query', async () => {
+		const { result } = renderHook(() =>
+			usePanelEditorSave({ dashboardId: 'dash-1', panelId: 'panel-9' }),
+		);
+
+		const spec = {
+			display: { name: 'New title', description: 'desc' },
+			plugin: {
+				kind: 'signoz/TimeSeriesPanel',
+				spec: { formatting: { unit: 'bytes' } },
+			},
+			queries: [],
+		} as unknown as DashboardtypesPanelSpecDTO;
+
+		await result.current.save(spec);
+
+		expect(mutateAsync).toHaveBeenCalledWith({
+			pathParams: { id: 'dash-1' },
+			data: [
+				{
+					op: 'add',
+					path: '/spec/panels/panel-9/spec',
+					value: spec,
+				},
+			],
+		});
+		expect(mockGetQueryKey).toHaveBeenCalledWith({ id: 'dash-1' });
+		expect(mockInvalidateQueries).toHaveBeenCalledWith([
+			'/api/v2/dashboards/dash-1',
+		]);
+	});
+
+	it('surfaces the mutation loading state as isSaving', () => {
+		mockUsePatch.mockReturnValue({
+			mutateAsync,
+			isLoading: true,
+			error: null,
+		});
+
+		const { result } = renderHook(() =>
+			usePanelEditorSave({ dashboardId: 'dash-1', panelId: 'panel-9' }),
+		);
+
+		expect(result.current.isSaving).toBe(true);
+	});
+});

frontend/src/pages/DashboardPageV2/DashboardContainer/PanelEditor/index.tsx

@@ -0,0 +1,171 @@
+import { type AnimationEvent, useCallback, useEffect, useState } from 'react';
+import { createPortal } from 'react-dom';
+import cx from 'classnames';
+import {
+	ResizableHandle,
+	ResizablePanel,
+	ResizablePanelGroup,
+	useDefaultLayout,
+} from '@signozhq/ui/resizable';
+import { toast } from '@signozhq/ui/sonner';
+import type { DashboardtypesPanelDTO } from 'api/generated/services/sigNoz.schemas';
+import { getPanelDefinition } from 'pages/DashboardPageV2/DashboardContainer/Panels';
+
+import ConfigPane from './ConfigPane/ConfigPane';
+import Header from './Header/Header';
+import layoutStorage from './layoutStorage';
+import PreviewPane from './PreviewPane/PreviewPane';
+import QueryBuilderPlaceholder from './QueryBuilderPlaceholder/QueryBuilderPlaceholder';
+import { useLegendSeries } from './useLegendSeries';
+import { usePanelEditorDraft } from './usePanelEditorDraft';
+import { usePanelEditorSave } from './usePanelEditorSave';
+import { usePreviewQuery } from './usePreviewQuery';
+
+import './PanelEditor.globals.scss';
+import styles from './PanelEditor.module.scss';
+
+interface PanelEditorContainerProps {
+	dashboardId: string;
+	panelId: string;
+	panel: DashboardtypesPanelDTO;
+	/** Dismiss the editor overlay (clears the `editPanelId` query param). */
+	onClose: () => void;
+	/** Called after a successful save so the dashboard can refetch. */
+	onSaved: () => void;
+}
+
+/**
+ * V2 panel editor rendered as a full-screen overlay on top of the dashboard
+ * view (the dashboard stays mounted underneath). A resizable split holds the
+ * live preview + query builder on the left and the configuration pane on the
+ * right. Owns the draft state and the save round-trip.
+ */
+function PanelEditorContainer({
+	dashboardId,
+	panelId,
+	panel,
+	onClose,
+	onSaved,
+}: PanelEditorContainerProps): JSX.Element {
+	const { draft, spec, setSpec, isDirty } = usePanelEditorDraft(panel);
+	const { save, isSaving } = usePanelEditorSave({ dashboardId, panelId });
+	const { defaultLayout, onLayoutChanged } = useDefaultLayout({
+		id: 'panel-editor-v2',
+		storage: layoutStorage,
+	});
+
+	// One shared query result for the whole editor: the preview renders it and the config
+	// pane derives the panel's series from it (e.g. for the legend-colors control).
+	const panelDef = getPanelDefinition(draft.spec?.plugin?.kind);
+	const { data, isLoading, error, selectedInterval, timeRange, onTimeChange } =
+		usePreviewQuery({
+			panel: draft,
+			panelId,
+			enabled: !!panelDef,
+		});
+	const legendSeries = useLegendSeries(draft, data);
+
+	// Flags the document while the editor overlay is mounted so the global stylesheet can
+	// lift body-portaled floating UI (Select dropdowns, the ⌘K palette) above the overlay.
+	useEffect(() => {
+		document.body.classList.add('panel-editor-open');
+		return (): void => document.body.classList.remove('panel-editor-open');
+	}, []);
+
+	// Dismiss is deferred until the exit animation finishes: `requestClose` flips the
+	// overlay into its closing state (playing the reverse keyframes), and the modal's
+	// `onAnimationEnd` then calls the real `onClose`, which unmounts the editor.
+	const [closing, setClosing] = useState(false);
+	const requestClose = useCallback(() => setClosing(true), []);
+	const onExitAnimationEnd = useCallback(
+		(event: AnimationEvent<HTMLDivElement>): void => {
+			// Only the modal's own exit animation should unmount — ignore animations that
+			// bubble up from descendants (e.g. the loading spinner).
+			if (closing && event.target === event.currentTarget) {
+				onClose();
+			}
+		},
+		[closing, onClose],
+	);
+
+	// Safety net: `prefers-reduced-motion` disables the exit animation, so
+	// `onAnimationEnd` never fires. Fall back to a timer (slightly longer than the
+	// animation) so the editor always unmounts once closing. `onClose` is idempotent.
+	useEffect(() => {
+		if (!closing) {
+			return undefined;
+		}
+		const timer = setTimeout(onClose, 240);
+		return (): void => clearTimeout(timer);
+	}, [closing, onClose]);
+
+	const onSave = useCallback(async (): Promise<void> => {
+		try {
+			await save(draft.spec);
+			toast.success('Panel saved');
+			onSaved();
+			requestClose();
+		} catch {
+			toast.error('Failed to save panel');
+		}
+	}, [save, draft.spec, onSaved, requestClose]);
+
+	// Portal to <body> so the fixed overlay escapes the dashboard content's
+	// stacking context (AppLayout pins `.app-content` at `z-index: 0`, which
+	// would otherwise trap the overlay below the side nav).
+	return createPortal(
+		<div
+			className={cx(styles.root, { [styles.closing]: closing })}
+			data-testid="panel-editor-v2"
+		>
+			<div className={styles.modal} onAnimationEnd={onExitAnimationEnd}>
+				<Header
+					isDirty={isDirty}
+					isSaving={isSaving}
+					onSave={onSave}
+					onClose={requestClose}
+				/>
+				<ResizablePanelGroup
+					id="panel-editor-v2"
+					orientation="horizontal"
+					defaultLayout={defaultLayout}
+					onLayoutChanged={onLayoutChanged}
+				>
+					<ResizablePanel minSize="75%" maxSize="80%" defaultSize="80%">
+						<div className={styles.left}>
+							<PreviewPane
+								panelId={panelId}
+								panel={draft}
+								panelDef={panelDef}
+								data={data}
+								isLoading={isLoading}
+								error={error}
+								selectedInterval={selectedInterval}
+								timeRange={timeRange}
+								onTimeChange={onTimeChange}
+							/>
+							<QueryBuilderPlaceholder />
+						</div>
+					</ResizablePanel>
+					<ResizableHandle withHandle />
+					<ResizablePanel
+						minSize="20%"
+						maxSize="25%"
+						defaultSize="20%"
+						className={styles.right}
+					>
+						<ConfigPane
+							panelKind={draft.spec?.plugin?.kind}
+							spec={spec}
+							onChangeSpec={setSpec}
+							legendSeries={legendSeries}
+						/>
+					</ResizablePanel>
+				</ResizablePanelGroup>
+			</div>
+		</div>,
+		document.body,
+	);
+}
+
+export default PanelEditorContainer;

frontend/src/pages/DashboardPageV2/DashboardContainer/PanelEditor/layoutStorage.ts

@@ -0,0 +1,17 @@
+import getLocalStorageApi from 'api/browser/localstorage/get';
+import setLocalStorageApi from 'api/browser/localstorage/set';
+
+/**
+ * `Storage`-shaped adapter (just `getItem`/`setItem`, which is all
+ * `useDefaultLayout` consumes) backed by the scoped localStorage wrappers. The
+ * wrappers prefix keys with the URL base path, so the persisted resizable
+ * layout stays isolated per deployment instead of touching the raw global.
+ */
+const layoutStorage: Pick<Storage, 'getItem' | 'setItem'> = {
+	getItem: (key: string): string | null => getLocalStorageApi(key),
+	setItem: (key: string, value: string): void => {
+		setLocalStorageApi(key, value);
+	},
+};
+
+export default layoutStorage;

frontend/src/pages/DashboardPageV2/DashboardContainer/PanelEditor/types.ts

@@ -0,0 +1,26 @@
+import type {
+	DashboardtypesPanelDTO,
+	DashboardtypesPanelSpecDTO,
+} from 'api/generated/services/sigNoz.schemas';
+
+/**
+ * Local draft state for the panel being edited. The draft is kept as a perses
+ * `DashboardtypesPanelDTO` so the live preview (which feeds the panel renderer)
+ * and the save patch share a single shape — no intermediate translation.
+ */
+export interface PanelEditorDraftApi {
+	/** The current (possibly edited) panel. Always a defined object once seeded. */
+	draft: DashboardtypesPanelDTO;
+	/**
+	 * The panel spec (`draft.spec`) — the single editing surface for the config pane.
+	 * Title/description live at `spec.display`; the section registry reads its slices
+	 * from here (plugin-level via `spec.plugin.spec.<key>`, panel-level via `spec.links`).
+	 */
+	spec: DashboardtypesPanelSpecDTO;
+	/** Replace the whole panel spec (the registry lens returns a new one per edit). */
+	setSpec: (next: DashboardtypesPanelSpecDTO) => void;
+	/** True when the draft diverges from the originally-loaded panel. */
+	isDirty: boolean;
+	/** Restore the draft to the originally-loaded panel. */
+	reset: () => void;
+}

frontend/src/pages/DashboardPageV2/DashboardContainer/PanelEditor/useLegendSeries.ts

@@ -0,0 +1,59 @@
+import { useMemo } from 'react';
+import { themeColors } from 'constants/theme';
+import { useIsDarkMode } from 'hooks/useDarkMode';
+import type { DashboardtypesPanelDTO } from 'api/generated/services/sigNoz.schemas';
+import getLabelName from 'lib/getLabelName';
+import { generateColor } from 'lib/uPlotLib/utils/generateColor';
+import { getBuilderQueries } from 'pages/DashboardPageV2/DashboardContainer/Panels/utils/getBuilderQueries';
+import { resolveSeriesLabelV5 } from 'pages/DashboardPageV2/DashboardContainer/Panels/utils/resolveSeriesLabel';
+import type { PanelQueryData } from 'pages/DashboardPageV2/DashboardContainer/queryV5/types';
+import {
+	flattenTimeSeries,
+	getTimeSeriesResults,
+} from 'pages/DashboardPageV2/DashboardContainer/queryV5/v5ResponseData';
+
+export interface LegendSeries {
+	/** Resolved display label — the key `legend.customColors` is indexed by. */
+	label: string;
+	/** The series' auto-assigned color, shown when no override is set. */
+	defaultColor: string;
+}
+
+/**
+ * Resolves the panel's rendered series into `{ label, defaultColor }` pairs, using the
+ * exact label resolution the time-series renderer applies (`flattenTimeSeries` →
+ * `resolveSeriesLabelV5`) and the same `generateColor` default. The legend-colors control
+ * keys overrides by these labels, so they must match what the chart draws. Deduplicated,
+ * order-preserving; empty until data arrives or for kinds without flat time-series data.
+ */
+export function useLegendSeries(
+	panel: DashboardtypesPanelDTO,
+	data: PanelQueryData | undefined,
+): LegendSeries[] {
+	const isDarkMode = useIsDarkMode();
+
+	return useMemo(() => {
+		const palette = isDarkMode
+			? themeColors.chartcolors
+			: themeColors.lightModeColor;
+		const series = flattenTimeSeries(
+			getTimeSeriesResults(data?.response),
+			data?.legendMap ?? {},
+		);
+		const builderQueries = getBuilderQueries(panel?.spec?.queries);
+
+		const byLabel = new Map<string, string>();
+		series.forEach((s) => {
+			const baseLabel = getLabelName(s.labels, s.queryName, s.legend);
+			const label = resolveSeriesLabelV5(s, builderQueries, baseLabel);
+			if (label && !byLabel.has(label)) {
+				byLabel.set(label, generateColor(label, palette));
+			}
+		});
+
+		return Array.from(byLabel, ([label, defaultColor]) => ({
+			label,
+			defaultColor,
+		}));
+	}, [panel?.spec?.queries, data?.response, data?.legendMap, isDarkMode]);
+}

frontend/src/pages/DashboardPageV2/DashboardContainer/PanelEditor/usePanelEditorDraft.ts

@@ -0,0 +1,48 @@
+import { useCallback, useMemo, useState } from 'react';
+import type {
+	DashboardtypesPanelDTO,
+	DashboardtypesPanelSpecDTO,
+} from 'api/generated/services/sigNoz.schemas';
+import { isEqual } from 'lodash-es';
+
+import type { PanelEditorDraftApi } from './types';
+
+/**
+ * Owns the editable draft of a single panel. Seeded once from the loaded panel
+ * (`useState` initializer), then mutated locally until the user saves. Keeping
+ * the draft in the perses `DashboardtypesPanelDTO` shape lets the preview pane
+ * render it through the same renderer registry the dashboard uses, and lets the
+ * save hook patch it without any conversion.
+ *
+ * Everything the config pane edits — title/description, the per-kind plugin spec
+ * (formatting, axes, …), legend colors, context links — flows through the single
+ * `spec`/`setSpec` pair (the ConfigPane registry lens), so there is one editing path.
+ */
+export function usePanelEditorDraft(
+	initialPanel: DashboardtypesPanelDTO,
+): PanelEditorDraftApi {
+	const [draft, setDraft] = useState<DashboardtypesPanelDTO>(initialPanel);
+
+	const setSpec = useCallback((next: DashboardtypesPanelSpecDTO): void => {
+		setDraft((prev) => ({ ...prev, spec: next }));
+	}, []);
+
+	const reset = useCallback((): void => {
+		setDraft(initialPanel);
+	}, [initialPanel]);
+
+	// Deep compare: any divergence from the loaded panel (display OR spec slices like
+	// formatting/axes/thresholds/links) marks the draft dirty.
+	const isDirty = useMemo(
+		() => !isEqual(draft, initialPanel),
+		[draft, initialPanel],
+	);
+
+	return {
+		draft,
+		spec: draft.spec,
+		setSpec,
+		isDirty,
+		reset,
+	};
+}

frontend/src/pages/DashboardPageV2/DashboardContainer/PanelEditor/usePanelEditorSave.ts

@@ -0,0 +1,61 @@
+import { useCallback } from 'react';
+import { useQueryClient } from 'react-query';
+import {
+	getGetDashboardV2QueryKey,
+	usePatchDashboardV2,
+} from 'api/generated/services/dashboard';
+import {
+	type DashboardtypesJSONPatchOperationDTO,
+	type DashboardtypesPanelSpecDTO,
+	DashboardtypesPatchOpDTO,
+} from 'api/generated/services/sigNoz.schemas';
+
+interface UsePanelEditorSaveArgs {
+	dashboardId: string;
+	panelId: string;
+}
+
+interface UsePanelEditorSaveApi {
+	save: (spec: DashboardtypesPanelSpecDTO) => Promise<void>;
+	isSaving: boolean;
+	error: Error | null;
+}
+
+/**
+ * Persists panel edits for the V2 editor via RFC-6902 JSON Patch.
+ *
+ * Replaces the whole panel spec in one `add` op against `/spec/panels/{panelId}/spec`
+ * with the editor's draft spec — so every edit the config pane makes (display,
+ * formatting/axes/legend/chart-appearance under `plugin.spec`, `legend.customColors`,
+ * context links) is persisted, not just the title/description. `add` doubles as
+ * create-or-replace, so panels that loaded without a sub-object are handled without a
+ * separate existence check. The draft carries `queries` unchanged until the V2 query
+ * builder lands, so replacing the whole spec is safe.
+ */
+export function usePanelEditorSave({
+	dashboardId,
+	panelId,
+}: UsePanelEditorSaveArgs): UsePanelEditorSaveApi {
+	const queryClient = useQueryClient();
+	const { mutateAsync, isLoading, error } = usePatchDashboardV2();
+
+	const save = useCallback(
+		async (spec: DashboardtypesPanelSpecDTO): Promise<void> => {
+			const ops: DashboardtypesJSONPatchOperationDTO[] = [
+				{
+					op: DashboardtypesPatchOpDTO.add,
+					path: `/spec/panels/${panelId}/spec`,
+					value: spec,
+				},
+			];
+
+			await mutateAsync({ pathParams: { id: dashboardId }, data: ops });
+			await queryClient.invalidateQueries(
+				getGetDashboardV2QueryKey({ id: dashboardId }),
+			);
+		},
+		[dashboardId, panelId, mutateAsync, queryClient],
+	);
+
+	return { save, isSaving: isLoading, error: (error as Error) ?? null };
+}

frontend/src/pages/DashboardPageV2/DashboardContainer/PanelEditor/usePreviewQuery.ts

@@ -0,0 +1,120 @@
+import { useCallback, useMemo, useState } from 'react';
+// eslint-disable-next-line no-restricted-imports -- seed initial time from global store; never written back
+import { useSelector } from 'react-redux';
+import type {
+	DashboardtypesPanelDTO,
+	DashboardtypesTimePreferenceDTO,
+} from 'api/generated/services/sigNoz.schemas';
+import type {
+	CustomTimeType,
+	Time,
+} from 'container/TopNav/DateTimeSelectionV2/types';
+import GetMinMax from 'lib/getMinMax';
+import { resolvePanelTimeWindow } from 'pages/DashboardPageV2/DashboardContainer/hooks/resolvePanelTimeWindow';
+import {
+	type UsePanelQueryResult,
+	usePanelQuery,
+} from 'pages/DashboardPageV2/DashboardContainer/hooks/usePanelQuery';
+import { AppState } from 'store/reducers';
+import { GlobalReducer } from 'types/reducer/globalTime';
+
+const NS_TO_MS = 1e6;
+
+/** Editor-local time window in epoch milliseconds — what `DateTimeSelectionV2` seeds from. */
+export interface PreviewTimeRange {
+	startMs: number;
+	endMs: number;
+}
+
+interface UsePreviewQueryArgs {
+	panel: DashboardtypesPanelDTO;
+	panelId: string;
+	enabled: boolean;
+}
+
+export interface UsePreviewQueryResult extends UsePanelQueryResult {
+	/** Current relative interval (or `custom`) shown in the modal time picker. */
+	selectedInterval: Time;
+	/** Editor-local window (epoch ms); seeds the picker's custom range + duration pill. */
+	timeRange: PreviewTimeRange;
+	/** `DateTimeSelectionV2` modal callback: relative interval, or `custom` + [startMs, endMs]. */
+	onTimeChange: (
+		interval: Time | CustomTimeType,
+		dateTimeRange?: [number, number],
+	) => void;
+}
+
+/**
+ * Owns the panel editor's preview query and its editor-local time selection. Lifted out
+ * of `PreviewPane` so the editor root can share the single query result between the
+ * preview and the config pane (e.g. the legend-colors control needs the resolved series).
+ *
+ * Time is driven by `DateTimeSelectionV2` in modal mode (`isModalTimeSelection` +
+ * `disableUrlSync`), so the picker never reads or writes global Redux time or the URL —
+ * its selections arrive through `onTimeChange` and stay in local state. The selection is
+ * seeded once from the current global window so the preview opens matching the dashboard,
+ * then resolved to an absolute `[startMs, endMs]` handed to `usePanelQuery`. The panel's
+ * own time preference is folded in so editing it updates the preview live.
+ */
+export function usePreviewQuery({
+	panel,
+	panelId,
+	enabled,
+}: UsePreviewQueryArgs): UsePreviewQueryResult {
+	const globalTime = useSelector<AppState, GlobalReducer>(
+		(state) => state.globalTime,
+	);
+
+	const [selectedInterval, setSelectedInterval] = useState<Time>(
+		globalTime.selectedTime as Time,
+	);
+	const [timeRange, setTimeRange] = useState<PreviewTimeRange>(() => ({
+		startMs: Math.floor(globalTime.minTime / NS_TO_MS),
+		endMs: Math.floor(globalTime.maxTime / NS_TO_MS),
+	}));
+
+	const onTimeChange = useCallback(
+		(interval: Time | CustomTimeType, dateTimeRange?: [number, number]): void => {
+			setSelectedInterval(interval as Time);
+			if (interval === 'custom' && dateTimeRange) {
+				// DateTimeSelectionV2 emits custom ranges in epoch ms.
+				setTimeRange({
+					startMs: Math.floor(dateTimeRange[0]),
+					endMs: Math.floor(dateTimeRange[1]),
+				});
+				return;
+			}
+			// GetMinMax resolves a relative interval to a now-anchored window in ns.
+			const { minTime, maxTime } = GetMinMax(interval);
+			setTimeRange({
+				startMs: Math.floor(minTime / NS_TO_MS),
+				endMs: Math.floor(maxTime / NS_TO_MS),
+			});
+		},
+		[],
+	);
+
+	// The panel's saved time preference must drive the preview too, so editing it shows
+	// the effect live. `visualization` is common to every plugin-spec variant — localized
+	// cast reads it without narrowing on kind. A relative preset shrinks the picked window
+	// to that span; global_time/none leaves it untouched.
+	const timePreference = (
+		panel?.spec?.plugin?.spec as
+			| { visualization?: { timePreference?: DashboardtypesTimePreferenceDTO } }
+			| undefined
+	)?.visualization?.timePreference;
+
+	const time = useMemo(
+		() =>
+			resolvePanelTimeWindow({
+				timePreference,
+				globalStartMs: timeRange.startMs,
+				globalEndMs: timeRange.endMs,
+			}),
+		[timeRange, timePreference],
+	);
+
+	const result = usePanelQuery({ panel, panelId, enabled, time });
+
+	return { ...result, selectedInterval, timeRange, onTimeChange };
+}

frontend/src/pages/DashboardPageV2/DashboardContainer/Panels/hooks/useGroupByPerQuery.ts

@@ -0,0 +1,30 @@
+import { useMemo } from 'react';
+import type { BaseAutocompleteData } from 'types/api/queryBuilder/queryAutocompleteResponse';
+import type { BuilderQuery } from 'types/api/v5/queryRange';
+
+/**
+ * Builds a record keyed by builder-query name to that query's groupBy keys
+ * in the V1 `BaseAutocompleteData` shape — the shape `TimeSeries` and the
+ * tooltip plugin consume. Conversion from v5 `GroupByKey` lives at this one
+ * call site that needs the V1 shape; the rest of V2 panel code stays on
+ * v5 types.
+ */
+export function useGroupByPerQuery(
+	builderQueries: BuilderQuery[],
+): Record<string, BaseAutocompleteData[]> {
+	return useMemo(() => {
+		const result: Record<string, BaseAutocompleteData[]> = {};
+		builderQueries.forEach((q) => {
+			if (!q.name) {
+				return;
+			}
+			result[q.name] = (q.groupBy ?? []).map((g) => ({
+				key: g.name,
+				dataType: g.fieldDataType as BaseAutocompleteData['dataType'],
+				type: (g.fieldContext as BaseAutocompleteData['type']) ?? '',
+				id: '',
+			}));
+		});
+		return result;
+	}, [builderQueries]);
+}

frontend/src/pages/DashboardPageV2/DashboardContainer/Panels/hooks/useResponsiveFontSize.ts

@@ -0,0 +1,48 @@
+import { RefObject, useEffect, useRef, useState } from 'react';
+
+const MIN_FONT_PX = 16;
+const MAX_FONT_PX = 60;
+// The value font is sized to a fraction of the container's smaller dimension so
+// it scales with the panel without overflowing.
+const FONT_SCALE_DIVISOR = 5;
+
+/**
+ * Sizes a single large value to its container, recomputing on resize via a
+ * ResizeObserver. Returns the ref to attach to the container and the current
+ * font size (px) to apply to the value text.
+ */
+export function useResponsiveFontSize(): {
+	containerRef: RefObject<HTMLDivElement>;
+	fontSize: string;
+} {
+	const containerRef = useRef<HTMLDivElement>(null);
+	const [fontSize, setFontSize] = useState('2.5vw');
+
+	useEffect(() => {
+		const updateFontSize = (): void => {
+			if (!containerRef.current) {
+				return;
+			}
+			const { width, height } = containerRef.current.getBoundingClientRect();
+			const minDimension = Math.min(width, height);
+			const newSize = Math.max(
+				Math.min(minDimension / FONT_SCALE_DIVISOR, MAX_FONT_PX),
+				MIN_FONT_PX,
+			);
+			setFontSize(`${newSize}px`);
+		};
+
+		updateFontSize();
+
+		const resizeObserver = new ResizeObserver(updateFontSize);
+		if (containerRef.current) {
+			resizeObserver.observe(containerRef.current);
+		}
+
+		return (): void => {
+			resizeObserver.disconnect();
+		};
+	}, []);
+
+	return { containerRef, fontSize };
+}

frontend/src/pages/DashboardPageV2/DashboardContainer/Panels/index.ts

@@ -0,0 +1,36 @@
+import { definition as barChart } from './kinds/BarChartPanel/definition';
+import { definition as histogram } from './kinds/HistogramPanel/definition';
+import { definition as number } from './kinds/NumberPanel/definition';
+import { definition as pieChart } from './kinds/PieChartPanel/definition';
+import { definition as timeSeries } from './kinds/TimeSeriesPanel/definition';
+import type {
+	PanelRegistry,
+	RenderablePanelDefinition,
+} from './types/panelDefinition';
+import type { PanelKind } from './types/panelKind';
+
+// Pure assembly: each kind owns its own PanelDefinition (see
+// `kinds/<Kind>/definition.ts`). Registering a new panel = add its folder and a
+// single entry below — no other central file needs editing.
+export const PANELS: PanelRegistry = {
+	[timeSeries.kind]: timeSeries,
+	[barChart.kind]: barChart,
+	[histogram.kind]: histogram,
+	[number.kind]: number,
+	[pieChart.kind]: pieChart,
+};
+
+export function getPanelDefinition(
+	kind: string | undefined,
+): RenderablePanelDefinition | undefined {
+	if (!kind) {
+		return undefined;
+	}
+	// The registry is correlated by kind, so a string lookup yields a union over
+	// every kind's exactly-typed definition. The renderer cannot be validated
+	// against that union at the JSX boundary, so widen to the kind-agnostic
+	// surface here — the single, intentional cast for the whole panel system.
+	return PANELS[kind as PanelKind] as unknown as
+		| RenderablePanelDefinition
+		| undefined;
+}

frontend/src/pages/DashboardPageV2/DashboardContainer/Panels/kinds/BarChartPanel/Renderer.tsx

@@ -0,0 +1,175 @@
+import { useCallback, useMemo, useRef } from 'react';
+import type { DashboardtypesBarChartPanelSpecDTO } from 'api/generated/services/sigNoz.schemas';
+import BarChart from 'container/DashboardContainer/visualization/charts/BarChart/BarChart';
+import TooltipFooter from 'container/DashboardContainer/visualization/panels/components/TooltipFooter';
+import { useIsDarkMode } from 'hooks/useDarkMode';
+import { useResizeObserver } from 'hooks/useDimensions';
+import { IRenderTooltipFooterArgs } from 'lib/uPlotV2/components/types';
+import {
+	flattenTimeSeries,
+	getExecStats,
+	getTimeSeriesResults,
+} from 'pages/DashboardPageV2/DashboardContainer/queryV5/v5ResponseData';
+import { prepareAlignedData } from 'pages/DashboardPageV2/DashboardContainer/queryV5/uplotData';
+import { useTimezone } from 'providers/Timezone';
+import type { QueryRangeRequestV5 } from 'types/api/v5/queryRange';
+import { getTimeRangeFromQueryRangeRequest } from 'utils/getTimeRange';
+
+import { useGroupByPerQuery } from '../../hooks/useGroupByPerQuery';
+import PanelStyles from '../../panel.module.scss';
+import { PanelRendererProps } from '../../types/rendererProps';
+import {
+	resolveDecimalPrecision,
+	resolveLegendPosition,
+} from '../../utils/chartAppearanceMappings';
+import { getBuilderQueries } from '../../utils/getBuilderQueries';
+
+import { buildBarChartConfig } from './buildConfig';
+import { ChartClickData } from 'lib/uPlotV2/plugins/TooltipPlugin/types';
+
+function BarPanelRenderer({
+	panelId,
+	panel,
+	data,
+	onClick,
+	onDragSelect,
+	dashboardPreference,
+	panelMode,
+}: PanelRendererProps<'signoz/BarChartPanel'>): JSX.Element {
+	const graphRef = useRef<HTMLDivElement>(null);
+	const containerDimensions = useResizeObserver(graphRef);
+	const isDarkMode = useIsDarkMode();
+	const { timezone } = useTimezone();
+
+	// The registry guarantees this Renderer only runs when
+	// `panel.spec.plugin.kind === 'signoz/BarChartPanel'`, so the cast is a
+	// documented boundary narrowing. Memoized so the `?? {}` fallback doesn't
+	// produce a fresh object on each render.
+	const spec = useMemo<DashboardtypesBarChartPanelSpecDTO>(
+		() => (panel?.spec?.plugin?.spec ?? {}) as DashboardtypesBarChartPanelSpecDTO,
+		[panel?.spec?.plugin?.spec],
+	);
+
+	const builderQueries = useMemo(
+		() => getBuilderQueries(panel?.spec?.queries),
+		[panel?.spec?.queries],
+	);
+
+	// X-scale clamps come from the request that produced the data (falls back
+	// to the global picker inside the helper). The generated request DTO is
+	// structurally the hand-written V5 request; the cast is the boundary.
+	const { minTimeScale, maxTimeScale } = useMemo(() => {
+		const { startTime, endTime } = getTimeRangeFromQueryRangeRequest(
+			data?.requestPayload as unknown as QueryRangeRequestV5 | undefined,
+		);
+		return { minTimeScale: startTime, maxTimeScale: endTime };
+	}, [data?.requestPayload]);
+
+	const groupByPerQuery = useGroupByPerQuery(builderQueries);
+
+	const flatSeries = useMemo(
+		() =>
+			flattenTimeSeries(
+				getTimeSeriesResults(data?.response),
+				data?.legendMap ?? {},
+			),
+		[data?.response, data?.legendMap],
+	);
+
+	const config = useMemo(
+		() =>
+			buildBarChartConfig({
+				panelId,
+				spec,
+				builderQueries,
+				series: flatSeries,
+				stepIntervals: getExecStats(data?.response)?.stepIntervals,
+				isDarkMode,
+				timezone,
+				panelMode,
+				minTimeScale,
+				maxTimeScale,
+				onDragSelect,
+			}),
+		[
+			panelId,
+			spec,
+			builderQueries,
+			flatSeries,
+			data?.response,
+			isDarkMode,
+			timezone,
+			panelMode,
+			minTimeScale,
+			maxTimeScale,
+			onDragSelect,
+			// `config` gets mutated by TooltipPlugin (config.setCursor for cursor sync).
+			// Rebuild it on syncMode changes so the new chart instance starts from a
+			// clean config — otherwise switching to "No Sync" would inherit stale sync
+			// settings from the previous mode.
+			dashboardPreference?.syncMode,
+		],
+	);
+
+	const chartData = useMemo(() => prepareAlignedData(flatSeries), [flatSeries]);
+
+	const decimalPrecision = useMemo(
+		() => resolveDecimalPrecision(spec.formatting?.decimalPrecision),
+		[spec.formatting?.decimalPrecision],
+	);
+
+	const legendPosition = useMemo(() => {
+		return resolveLegendPosition(spec.legend?.position);
+	}, [spec.legend?.position]);
+
+	const renderTooltipFooter = useCallback(
+		({ isPinned, dismiss }: IRenderTooltipFooterArgs) => (
+			<TooltipFooter id={panelId} isPinned={isPinned} dismiss={dismiss} />
+		),
+		[panelId],
+	);
+
+	// The uPlot key prop is the only way to force a full teardown and re-mount
+	// of the chart. Including syncMode/syncFilterMode in the key ensures changes
+	// to these preferences trigger a fresh chart instance, preventing stale
+	// sync wiring from being inherited.
+	const key = `${dashboardPreference?.syncMode}-${dashboardPreference?.syncFilterMode}`;
+
+	const handleChartClick = useCallback(
+		(args: ChartClickData) => {
+			onClick?.(args);
+		},
+		[onClick],
+	);
+
+	return (
+		<div
+			ref={graphRef}
+			data-testid="bar-panel-renderer"
+			className={PanelStyles.panelContainer}
+		>
+			{containerDimensions.width > 0 && containerDimensions.height > 0 && (
+				<BarChart
+					key={key}
+					config={config}
+					data={chartData}
+					legendConfig={{ position: legendPosition }}
+					groupByPerQuery={groupByPerQuery}
+					canPinTooltip
+					timezone={timezone}
+					yAxisUnit={spec.formatting?.unit}
+					decimalPrecision={decimalPrecision}
+					width={containerDimensions.width}
+					height={containerDimensions.height}
+					syncMode={dashboardPreference?.syncMode}
+					syncFilterMode={dashboardPreference?.syncFilterMode}
+					isStackedBarChart={spec.visualization?.stackedBarChart ?? false}
+					renderTooltipFooter={renderTooltipFooter}
+					onClick={handleChartClick}
+				/>
+			)}
+		</div>
+	);
+}
+
+export default BarPanelRenderer;

frontend/src/pages/DashboardPageV2/DashboardContainer/Panels/kinds/BarChartPanel/buildConfig.ts

@@ -0,0 +1,138 @@
+import type { DashboardtypesBarChartPanelSpecDTO } from 'api/generated/services/sigNoz.schemas';
+import { Timezone } from 'components/CustomTimePicker/timezoneUtils';
+import { PANEL_TYPES } from 'constants/queryBuilder';
+import { getInitialStackedBands } from 'container/DashboardContainer/visualization/charts/utils/stackSeriesUtils';
+import { PanelMode } from 'container/DashboardContainer/visualization/panels/types';
+import { buildBaseConfig } from 'pages/DashboardPageV2/DashboardContainer/Panels/utils/baseConfigBuilder';
+import { resolveSeriesLabelV5 } from 'pages/DashboardPageV2/DashboardContainer/Panels/utils/resolveSeriesLabel';
+import type { PanelSeries } from 'pages/DashboardPageV2/DashboardContainer/queryV5/types';
+import { toClickPluginPayload } from 'pages/DashboardPageV2/DashboardContainer/queryV5/uplotData';
+import getLabelName from 'lib/getLabelName';
+import { OnClickPluginOpts } from 'lib/uPlotLib/plugins/onClickPlugin';
+import { DrawStyle } from 'lib/uPlotV2/config/types';
+import { UPlotConfigBuilder } from 'lib/uPlotV2/config/UPlotConfigBuilder';
+import type { BuilderQuery } from 'types/api/v5/queryRange';
+
+export interface BuildBarChartConfigArgs {
+	panelId: string;
+	spec: DashboardtypesBarChartPanelSpecDTO;
+	/**
+	 * Flat list of builder queries on this panel (see `getBuilderQueries`).
+	 * Powers per-query legend resolution; empty for non-builder panels.
+	 */
+	builderQueries: BuilderQuery[];
+	/** Flattened V5 series (see `flattenTimeSeries`). */
+	series: PanelSeries[];
+	/** Per-query step intervals from the response exec stats. */
+	stepIntervals?: Record<string, number>;
+	isDarkMode: boolean;
+	timezone: Timezone;
+	panelMode: PanelMode;
+	onDragSelect?: (start: number, end: number) => void;
+	onClick?: OnClickPluginOpts['onClick'];
+	minTimeScale?: number;
+	maxTimeScale?: number;
+}
+
+/**
+ * Builds a fully-wired `UPlotConfigBuilder` for a Bar chart panel.
+ *
+ * Delegates the panel-agnostic scaffolding (scales, thresholds, axes,
+ * drag-to-zoom, click plugin) to the shared `buildBaseConfig`, then layers
+ * in the Bar-specific concerns: optional stacking via uPlot bands, plus
+ * one bar series per result row.
+ */
+export function buildBarChartConfig({
+	panelId,
+	spec,
+	builderQueries,
+	series,
+	stepIntervals,
+	isDarkMode,
+	timezone,
+	panelMode,
+	onDragSelect,
+	onClick,
+	minTimeScale,
+	maxTimeScale,
+}: BuildBarChartConfigArgs): UPlotConfigBuilder {
+	const builder = buildBaseConfig({
+		panelId,
+		panelType: PANEL_TYPES.BAR,
+		isDarkMode,
+		timezone,
+		panelMode,
+		isLogScale: spec.axes?.isLogScale,
+		softMin: spec.axes?.softMin ?? undefined,
+		softMax: spec.axes?.softMax ?? undefined,
+		formatting: spec.formatting,
+		thresholds: spec.thresholds,
+		stepIntervals,
+		clickPayload: toClickPluginPayload(series),
+		minTimeScale,
+		maxTimeScale,
+		onDragSelect,
+		onClick,
+	});
+
+	addSeries({
+		builder,
+		spec,
+		builderQueries,
+		series,
+		stepIntervals,
+		isDarkMode,
+	});
+
+	return builder;
+}
+
+interface AddSeriesArgs {
+	builder: UPlotConfigBuilder;
+	spec: DashboardtypesBarChartPanelSpecDTO;
+	builderQueries: BuilderQuery[];
+	series: PanelSeries[];
+	stepIntervals?: Record<string, number>;
+	isDarkMode: boolean;
+}
+
+/**
+ * Adds one bar series per flattened V5 series, plus uPlot bands for stacking
+ * when `spec.visualization.stackedBarChart` is set. Each series receives its
+ * own per-query step interval so bar widths line up with the actual
+ * sampling cadence reported by the backend.
+ *
+ * Order must match `prepareAlignedData` — both iterate the same flat list.
+ */
+function addSeries({
+	builder,
+	spec,
+	builderQueries,
+	series,
+	stepIntervals,
+	isDarkMode,
+}: AddSeriesArgs): void {
+	const colorMapping = spec.legend?.customColors ?? {};
+
+	if (spec.visualization?.stackedBarChart) {
+		// uPlot uses 1-based series indices (index 0 is the timestamp axis);
+		// `+1` keeps the band targets aligned with the series we're about to add.
+		builder.setBands(getInitialStackedBands(series.length + 1));
+	}
+
+	series.forEach((s) => {
+		const baseLabel = getLabelName(s.labels, s.queryName, s.legend);
+		const label = resolveSeriesLabelV5(s, builderQueries, baseLabel);
+		const stepInterval = s.queryName ? stepIntervals?.[s.queryName] : undefined;
+
+		builder.addSeries({
+			scaleKey: 'y',
+			drawStyle: DrawStyle.Bar,
+			label,
+			colorMapping,
+			isDarkMode,
+			stepInterval,
+			metric: s.labels,
+		});
+	});
+}

frontend/src/pages/DashboardPageV2/DashboardContainer/Panels/kinds/BarChartPanel/definition.ts

@@ -0,0 +1,14 @@
+import { DataSource } from 'types/common/queryBuilder';
+
+import type { PanelDefinition } from '../../types/panelDefinition';
+import Renderer from './Renderer';
+import { sections } from './sections';
+
+export const definition: PanelDefinition<'signoz/BarChartPanel'> = {
+	kind: 'signoz/BarChartPanel',
+	displayName: 'Bar Chart',
+	Renderer,
+	sections,
+	supportedSignals: [DataSource.METRICS, DataSource.LOGS, DataSource.TRACES],
+	actions: { view: true, edit: true, download: false, createAlert: true },
+};

frontend/src/pages/DashboardPageV2/DashboardContainer/Panels/kinds/BarChartPanel/sections.ts

@@ -0,0 +1,13 @@
+import type { SectionConfig } from '../../types/sections';
+
+// Bar stacking lives in `visualization.stackedBarChart` (a different spec key from the
+// time-series `chartAppearance`), so it's a control on the `visualization` section, not
+// `chartAppearance`. fillSpans is TimeSeries-only, so Bar omits it (V1 parity).
+export const sections: SectionConfig[] = [
+	{ kind: 'visualization', controls: { timePreference: true, stacking: true } },
+	{ kind: 'formatting', controls: { unit: true, decimals: true } },
+	{ kind: 'axes', controls: { minMax: true, logScale: true } },
+	{ kind: 'legend', controls: { position: true } },
+	{ kind: 'thresholds' },
+	{ kind: 'contextLinks' },
+];

frontend/src/pages/DashboardPageV2/DashboardContainer/Panels/kinds/HistogramPanel/Renderer.tsx

@@ -0,0 +1,139 @@
+import { useCallback, useMemo, useRef } from 'react';
+import type { DashboardtypesHistogramPanelSpecDTO } from 'api/generated/services/sigNoz.schemas';
+import Histogram from 'container/DashboardContainer/visualization/charts/Histogram/Histogram';
+import TooltipFooter from 'container/DashboardContainer/visualization/panels/components/TooltipFooter';
+import { useIsDarkMode } from 'hooks/useDarkMode';
+import { useResizeObserver } from 'hooks/useDimensions';
+import { IRenderTooltipFooterArgs } from 'lib/uPlotV2/components/types';
+import {
+	flattenTimeSeries,
+	getTimeSeriesResults,
+} from 'pages/DashboardPageV2/DashboardContainer/queryV5/v5ResponseData';
+import { useTimezone } from 'providers/Timezone';
+import type uPlot from 'uplot';
+
+import PanelStyles from '../../panel.module.scss';
+import { PanelRendererProps } from '../../types/rendererProps';
+import { resolveLegendPosition } from '../../utils/chartAppearanceMappings';
+import { getBuilderQueries } from '../../utils/getBuilderQueries';
+
+import { buildHistogramConfig } from './buildConfig';
+import { prepareHistogramData } from './prepareData';
+import { ChartClickData } from 'lib/uPlotV2/plugins/TooltipPlugin/types';
+
+function HistogramPanelRenderer({
+	panelId,
+	panel,
+	data,
+	panelMode,
+	onClick,
+}: PanelRendererProps<'signoz/HistogramPanel'>): JSX.Element {
+	const graphRef = useRef<HTMLDivElement>(null);
+	const containerDimensions = useResizeObserver(graphRef);
+	const isDarkMode = useIsDarkMode();
+	const { timezone } = useTimezone();
+
+	// The registry guarantees this Renderer only runs when
+	// `panel.spec.plugin.kind === 'signoz/HistogramPanel'`, so the cast is a
+	// documented boundary narrowing.
+	const spec = useMemo<DashboardtypesHistogramPanelSpecDTO>(
+		() =>
+			(panel?.spec?.plugin?.spec ?? {}) as DashboardtypesHistogramPanelSpecDTO,
+		[panel?.spec?.plugin?.spec],
+	);
+
+	const builderQueries = useMemo(
+		() => getBuilderQueries(panel?.spec?.queries),
+		[panel?.spec?.queries],
+	);
+
+	const flatSeries = useMemo(
+		() =>
+			flattenTimeSeries(
+				getTimeSeriesResults(data?.response),
+				data?.legendMap ?? {},
+			),
+		[data?.response, data?.legendMap],
+	);
+
+	const config = useMemo(
+		() =>
+			buildHistogramConfig({
+				panelId,
+				spec,
+				builderQueries,
+				series: flatSeries,
+				isDarkMode,
+				timezone,
+				panelMode,
+			}),
+		[panelId, spec, builderQueries, flatSeries, isDarkMode, timezone, panelMode],
+	);
+
+	const chartData = useMemo(
+		() =>
+			prepareHistogramData({
+				series: flatSeries,
+				bucketWidth: spec.histogramBuckets?.bucketWidth ?? undefined,
+				bucketCount: spec.histogramBuckets?.bucketCount ?? undefined,
+				mergeAllActiveQueries: spec.histogramBuckets?.mergeAllActiveQueries,
+			}),
+		[
+			flatSeries,
+			spec.histogramBuckets?.bucketWidth,
+			spec.histogramBuckets?.bucketCount,
+			spec.histogramBuckets?.mergeAllActiveQueries,
+		],
+	);
+
+	const legendPosition = useMemo(
+		() => resolveLegendPosition(spec.legend?.position),
+		[spec.legend?.position],
+	);
+
+	const renderTooltipFooter = useCallback(
+		({ isPinned, dismiss }: IRenderTooltipFooterArgs) => (
+			<TooltipFooter
+				id={panelId}
+				isPinned={isPinned}
+				dismiss={dismiss}
+				canDrilldown={false}
+			/>
+		),
+		[panelId],
+	);
+
+	const isQueriesMerged = spec.histogramBuckets?.mergeAllActiveQueries ?? false;
+
+	const handleChartClick = useCallback(
+		(args: ChartClickData) => {
+			onClick?.(args);
+		},
+		[onClick],
+	);
+
+	return (
+		<div
+			ref={graphRef}
+			data-testid="histogram-panel-renderer"
+			className={PanelStyles.panelContainer}
+		>
+			{containerDimensions.width > 0 && containerDimensions.height > 0 && (
+				<Histogram
+					key={panelId}
+					config={config}
+					data={chartData as uPlot.AlignedData}
+					legendConfig={{ position: legendPosition }}
+					canPinTooltip
+					isQueriesMerged={isQueriesMerged}
+					width={containerDimensions.width}
+					height={containerDimensions.height}
+					renderTooltipFooter={renderTooltipFooter}
+					onClick={handleChartClick}
+				/>
+			)}
+		</div>
+	);
+}
+
+export default HistogramPanelRenderer;

frontend/src/pages/DashboardPageV2/DashboardContainer/Panels/kinds/HistogramPanel/buildConfig.ts

@@ -0,0 +1,129 @@
+import type { DashboardtypesHistogramPanelSpecDTO } from 'api/generated/services/sigNoz.schemas';
+import { Timezone } from 'components/CustomTimePicker/timezoneUtils';
+import { PANEL_TYPES } from 'constants/queryBuilder';
+import { PanelMode } from 'container/DashboardContainer/visualization/panels/types';
+import { buildBaseConfig } from 'pages/DashboardPageV2/DashboardContainer/Panels/utils/baseConfigBuilder';
+import { resolveSeriesLabelV5 } from 'pages/DashboardPageV2/DashboardContainer/Panels/utils/resolveSeriesLabel';
+import type { PanelSeries } from 'pages/DashboardPageV2/DashboardContainer/queryV5/types';
+import getLabelName from 'lib/getLabelName';
+import { DrawStyle } from 'lib/uPlotV2/config/types';
+import { UPlotConfigBuilder } from 'lib/uPlotV2/config/UPlotConfigBuilder';
+import type { BuilderQuery } from 'types/api/v5/queryRange';
+
+const POINT_SIZE = 5;
+const BAR_WIDTH_FACTOR = 1;
+// Merged-series colors mirror the V1 default — single histogram bin gets a
+// fixed blue-ish pair so the merged view looks the same as before.
+const MERGED_SERIES_LINE_COLOR = '#3f5ecc';
+const MERGED_SERIES_FILL_COLOR = '#4E74F8';
+
+export interface BuildHistogramConfigArgs {
+	panelId: string;
+	spec: DashboardtypesHistogramPanelSpecDTO;
+	/** Builder queries on this panel — used to resolve per-series labels. */
+	builderQueries: BuilderQuery[];
+	/** Flattened V5 series (see `flattenTimeSeries`). */
+	series: PanelSeries[];
+	isDarkMode: boolean;
+	timezone: Timezone;
+	panelMode: PanelMode;
+}
+
+/**
+ * Builds a fully-wired `UPlotConfigBuilder` for a Histogram panel.
+ *
+ * Unlike time-axis panels, histograms have no time scale and no drag-to-zoom.
+ * We still reuse `buildBaseConfig` for the consistent scaffolding (thresholds,
+ * axes, click plugin) but then override the X/Y scales to be auto-linear
+ * (`time: false, auto: true`) and install a histogram-specific cursor that
+ * disables drag-pan and tightens focus proximity.
+ */
+export function buildHistogramConfig({
+	panelId,
+	spec,
+	builderQueries,
+	series,
+	isDarkMode,
+	timezone,
+	panelMode,
+}: BuildHistogramConfigArgs): UPlotConfigBuilder {
+	// Histograms have no time axis — no stepIntervals, and no click plugin
+	// (the renderer passes no onClick), so the base config needs no response.
+	const builder = buildBaseConfig({
+		panelId,
+		panelType: PANEL_TYPES.HISTOGRAM,
+		isDarkMode,
+		timezone,
+		panelMode,
+	});
+
+	builder.setCursor({
+		drag: { x: false, y: false, setScale: true },
+		focus: { prox: 1e3 },
+	});
+
+	// Override the time-axis scales from `buildBaseConfig` — histograms are
+	// distribution plots, not time series.
+	builder.addScale({ scaleKey: 'x', time: false, auto: true });
+	builder.addScale({ scaleKey: 'y', time: false, auto: true, min: 0 });
+
+	addSeries({ builder, spec, builderQueries, series, isDarkMode });
+
+	return builder;
+}
+
+interface AddSeriesArgs {
+	builder: UPlotConfigBuilder;
+	spec: DashboardtypesHistogramPanelSpecDTO;
+	builderQueries: BuilderQuery[];
+	series: PanelSeries[];
+	isDarkMode: boolean;
+}
+
+/**
+ * Adds histogram bar series to the builder. When `mergeAllActiveQueries` is
+ * set, `prepareHistogramData` produces a single Y column, so we add exactly
+ * one series with the fixed merged-mode colors. Otherwise one series per
+ * result row, with labels resolved via the standard legend matrix.
+ */
+function addSeries({
+	builder,
+	spec,
+	builderQueries,
+	series,
+	isDarkMode,
+}: AddSeriesArgs): void {
+	const colorMapping = spec.legend?.customColors ?? {};
+	const mergeAllActiveQueries =
+		spec.histogramBuckets?.mergeAllActiveQueries ?? false;
+
+	if (mergeAllActiveQueries) {
+		builder.addSeries({
+			scaleKey: 'y',
+			label: '',
+			drawStyle: DrawStyle.Histogram,
+			colorMapping,
+			barWidthFactor: BAR_WIDTH_FACTOR,
+			pointSize: POINT_SIZE,
+			lineColor: MERGED_SERIES_LINE_COLOR,
+			fillColor: MERGED_SERIES_FILL_COLOR,
+			isDarkMode,
+		});
+		return;
+	}
+
+	series.forEach((s) => {
+		const baseLabel = getLabelName(s.labels, s.queryName, s.legend);
+		const label = resolveSeriesLabelV5(s, builderQueries, baseLabel);
+
+		builder.addSeries({
+			scaleKey: 'y',
+			label,
+			drawStyle: DrawStyle.Histogram,
+			colorMapping,
+			barWidthFactor: BAR_WIDTH_FACTOR,
+			pointSize: POINT_SIZE,
+			isDarkMode,
+		});
+	});
+}

frontend/src/pages/DashboardPageV2/DashboardContainer/Panels/kinds/HistogramPanel/definition.ts

@@ -0,0 +1,14 @@
+import { DataSource } from 'types/common/queryBuilder';
+
+import type { PanelDefinition } from '../../types/panelDefinition';
+import Renderer from './Renderer';
+import { sections } from './sections';
+
+export const definition: PanelDefinition<'signoz/HistogramPanel'> = {
+	kind: 'signoz/HistogramPanel',
+	displayName: 'Histogram',
+	Renderer,
+	sections,
+	supportedSignals: [DataSource.METRICS, DataSource.LOGS, DataSource.TRACES],
+	actions: { view: true, edit: true, download: false, createAlert: true },
+};

frontend/src/pages/DashboardPageV2/DashboardContainer/Panels/kinds/HistogramPanel/prepareData.ts

@@ -0,0 +1,148 @@
+import { histogramBucketSizes } from '@grafana/data';
+import { DEFAULT_BUCKET_COUNT } from 'container/PanelWrapper/constants';
+import {
+	buildHistogramBuckets,
+	mergeAlignedDataTables,
+	prependNullBinToFirstHistogramSeries,
+	replaceUndefinedWithNullInAlignedData,
+} from 'container/DashboardContainer/visualization/panels/utils/histogram';
+import type { PanelSeries } from 'pages/DashboardPageV2/DashboardContainer/queryV5/types';
+import { AlignedData } from 'uplot';
+import { incrRoundDn, roundDecimals } from 'utils/round';
+
+export interface PrepareHistogramDataArgs {
+	/** Flattened V5 series (see `flattenTimeSeries`). */
+	series: PanelSeries[];
+	bucketWidth?: number;
+	bucketCount?: number;
+	mergeAllActiveQueries?: boolean;
+}
+
+const BUCKET_OFFSET = 0;
+const sortAscending = (a: number, b: number): number => a - b;
+
+/**
+ * Bins raw series values into a uPlot-aligned histogram. Picks a bucket size
+ * either from `bucketWidth` (explicit override) or the smallest predefined
+ * Grafana bucket that fits the data's `range / bucketCount` target while
+ * staying ≥ the data's smallest non-zero delta (so we never sub-divide below
+ * the resolution of the input).
+ *
+ * Empty input → `[[]]` (a valid empty AlignedData uPlot accepts).
+ */
+export function prepareHistogramData({
+	series,
+	bucketWidth,
+	bucketCount = DEFAULT_BUCKET_COUNT,
+	mergeAllActiveQueries = false,
+}: PrepareHistogramDataArgs): AlignedData {
+	const values = extractNumericValues(series);
+	if (values.length === 0) {
+		return [[]];
+	}
+
+	const sorted = [...values].sort(sortAscending);
+	const range = sorted[sorted.length - 1] - sorted[0];
+	const smallestDelta = computeSmallestDelta(sorted);
+	let bucketSize = selectBucketSize({
+		range,
+		bucketCount,
+		smallestDelta,
+		bucketWidthOverride: bucketWidth,
+	});
+	if (bucketSize <= 0) {
+		bucketSize = range > 0 ? range / bucketCount : 1;
+	}
+
+	const getBucket = (v: number): number =>
+		roundDecimals(incrRoundDn(v - BUCKET_OFFSET, bucketSize) + BUCKET_OFFSET, 9);
+
+	const frames = buildFrames(series, mergeAllActiveQueries);
+	// Merged mode folds every query into frame 0 and leaves trailing empty
+	// frames — drop those. Per-query mode must keep one column per result row
+	// (even empty queries), or the data column count drifts below the series
+	// count `buildHistogramConfig` adds per row → uPlot renders nothing.
+	const histograms: AlignedData[] = frames
+		.filter((frame) => !mergeAllActiveQueries || frame.length > 0)
+		.map((frame) => buildHistogramBuckets(frame, getBucket, sortAscending));
+
+	if (histograms.length === 0) {
+		return [[]];
+	}
+
+	const merged = mergeAlignedDataTables(histograms);
+	replaceUndefinedWithNullInAlignedData(merged);
+	prependNullBinToFirstHistogramSeries(merged, bucketSize);
+	return merged;
+}
+
+// Non-finite samples degrade to 0 (legacy `parseFloat(...) || 0` parity).
+function toBinnableValue(value: number): number {
+	return Number.isFinite(value) ? value : 0;
+}
+
+function extractNumericValues(series: PanelSeries[]): number[] {
+	const values: number[] = [];
+	for (const s of series) {
+		for (const point of s.values) {
+			values.push(toBinnableValue(point.value));
+		}
+	}
+	return values;
+}
+
+function computeSmallestDelta(sortedValues: number[]): number {
+	if (sortedValues.length <= 1) {
+		return 0;
+	}
+	let smallest = Infinity;
+	for (let i = 1; i < sortedValues.length; i++) {
+		const delta = sortedValues[i] - sortedValues[i - 1];
+		if (delta > 0) {
+			smallest = Math.min(smallest, delta);
+		}
+	}
+	return smallest === Infinity ? 0 : smallest;
+}
+
+function selectBucketSize({
+	range,
+	bucketCount,
+	smallestDelta,
+	bucketWidthOverride,
+}: {
+	range: number;
+	bucketCount: number;
+	smallestDelta: number;
+	bucketWidthOverride?: number;
+}): number {
+	if (bucketWidthOverride != null && bucketWidthOverride > 0) {
+		return bucketWidthOverride;
+	}
+	const targetSize = range / bucketCount;
+	for (const candidate of histogramBucketSizes) {
+		if (targetSize < candidate && candidate >= smallestDelta) {
+			return candidate;
+		}
+	}
+	return 0;
+}
+
+// When merging is on, fold all frames into the first; the trailing empty
+// frames stay in the array so downstream `.filter(length > 0)` drops them.
+function buildFrames(
+	series: PanelSeries[],
+	mergeAllActiveQueries: boolean,
+): number[][] {
+	const frames: number[][] = series.map((s) =>
+		s.values.map((point) => toBinnableValue(point.value)),
+	);
+	if (mergeAllActiveQueries && frames.length > 1) {
+		const first = frames[0];
+		for (let i = 1; i < frames.length; i++) {
+			first.push(...frames[i]);
+			frames[i] = [];
+		}
+	}
+	return frames;
+}