feat(dashboard): hide legend format for scatter plot

It only renames a value column here; axis labels name what each axis measures.

Assisted-by: Claude Opus 5.5

docs/api/openapi.yml

@@ -3379,6 +3379,13 @@ components:
           nullable: true
           type: number
       type: object
+    DashboardtypesAxisScale:
+      enum:
+      - auto
+      - linear
+      - log
+      - symlog
+      type: string
     DashboardtypesBarChartPanelSpec:
       properties:
         axes:
@@ -4042,6 +4049,7 @@ components:
           signoz/ListPanel: '#/components/schemas/DashboardtypesPanelPluginVariantGithubComSigNozSignozPkgTypesDashboardtypesListPanelSpec'
           signoz/NumberPanel: '#/components/schemas/DashboardtypesPanelPluginVariantGithubComSigNozSignozPkgTypesDashboardtypesNumberPanelSpec'
           signoz/PieChartPanel: '#/components/schemas/DashboardtypesPanelPluginVariantGithubComSigNozSignozPkgTypesDashboardtypesPieChartPanelSpec'
+          signoz/ScatterPlotPanel: '#/components/schemas/DashboardtypesPanelPluginVariantGithubComSigNozSignozPkgTypesDashboardtypesScatterPlotPanelSpec'
           signoz/TablePanel: '#/components/schemas/DashboardtypesPanelPluginVariantGithubComSigNozSignozPkgTypesDashboardtypesTablePanelSpec'
           signoz/TextPanel: '#/components/schemas/DashboardtypesPanelPluginVariantGithubComSigNozSignozPkgTypesDashboardtypesTextPanelSpec'
           signoz/TimeSeriesPanel: '#/components/schemas/DashboardtypesPanelPluginVariantGithubComSigNozSignozPkgTypesDashboardtypesTimeSeriesPanelSpec'
@@ -4056,6 +4064,7 @@ components:
       - $ref: '#/components/schemas/DashboardtypesPanelPluginVariantGithubComSigNozSignozPkgTypesDashboardtypesHistogramPanelSpec'
       - $ref: '#/components/schemas/DashboardtypesPanelPluginVariantGithubComSigNozSignozPkgTypesDashboardtypesListPanelSpec'
       - $ref: '#/components/schemas/DashboardtypesPanelPluginVariantGithubComSigNozSignozPkgTypesDashboardtypesTextPanelSpec'
+      - $ref: '#/components/schemas/DashboardtypesPanelPluginVariantGithubComSigNozSignozPkgTypesDashboardtypesScatterPlotPanelSpec'
       type: object
     DashboardtypesPanelPluginKind:
       enum:
@@ -4068,6 +4077,7 @@ components:
       - signoz/HistogramPanel
       - signoz/ListPanel
       - signoz/TextPanel
+      - signoz/ScatterPlotPanel
       type: string
     DashboardtypesPanelPluginVariantGithubComSigNozSignozPkgTypesDashboardtypesAreaChartPanelSpec:
       properties:
@@ -4141,6 +4151,18 @@ components:
       - kind
       - spec
       type: object
+    DashboardtypesPanelPluginVariantGithubComSigNozSignozPkgTypesDashboardtypesScatterPlotPanelSpec:
+      properties:
+        kind:
+          enum:
+          - signoz/ScatterPlotPanel
+          type: string
+        spec:
+          $ref: '#/components/schemas/DashboardtypesScatterPlotPanelSpec'
+      required:
+      - kind
+      - spec
+      type: object
     DashboardtypesPanelPluginVariantGithubComSigNozSignozPkgTypesDashboardtypesTablePanelSpec:
       properties:
         kind:
@@ -4220,6 +4242,16 @@ components:
         visualization:
           $ref: '#/components/schemas/DashboardtypesBasicVisualization'
       type: object
+    DashboardtypesPointDiameter:
+      maximum: 40
+      minimum: 2
+      nullable: true
+      type: integer
+    DashboardtypesPointOpacity:
+      maximum: 1
+      minimum: 0.1
+      nullable: true
+      type: number
     DashboardtypesPostableDashboardV2:
       properties:
         generateName:
@@ -4393,6 +4425,87 @@ components:
       required:
       - queryValue
       type: object
+    DashboardtypesScatterPlotAxes:
+      properties:
+        x:
+          $ref: '#/components/schemas/DashboardtypesScatterPlotAxis'
+        "y":
+          $ref: '#/components/schemas/DashboardtypesScatterPlotAxis'
+      type: object
+    DashboardtypesScatterPlotAxis:
+      properties:
+        label:
+          description: Axis title. Empty draws none.
+          type: string
+        scale:
+          $ref: '#/components/schemas/DashboardtypesAxisScale'
+        softMax:
+          nullable: true
+          type: number
+        softMin:
+          nullable: true
+          type: number
+      type: object
+    DashboardtypesScatterPlotChartAppearance:
+      properties:
+        points:
+          $ref: '#/components/schemas/DashboardtypesScatterPlotPoints'
+      type: object
+    DashboardtypesScatterPlotDimensions:
+      properties:
+        color:
+          description: Group-by label names (e.g. k8s.namespace.name) whose combined
+            values colour dots and drive the legend. Empty colours by every group-by
+            label.
+          items:
+            type: string
+          nullable: true
+          type: array
+        size:
+          description: Value column key that scales dot size. Empty draws every dot
+            at the default size.
+          type: string
+        x:
+          description: Value column key (queryName, or queryName.expression for a
+            multi-aggregation query) plotted on the x axis. Empty uses the first value
+            column.
+          type: string
+        "y":
+          description: Value column key plotted on the y axis. Empty uses the second
+            value column.
+          type: string
+      type: object
+    DashboardtypesScatterPlotPanelSpec:
+      properties:
+        axes:
+          $ref: '#/components/schemas/DashboardtypesScatterPlotAxes'
+        chartAppearance:
+          $ref: '#/components/schemas/DashboardtypesScatterPlotChartAppearance'
+        dimensions:
+          $ref: '#/components/schemas/DashboardtypesScatterPlotDimensions'
+        formatting:
+          $ref: '#/components/schemas/DashboardtypesTableFormatting'
+        legend:
+          $ref: '#/components/schemas/DashboardtypesLegend'
+        thresholds:
+          items:
+            $ref: '#/components/schemas/DashboardtypesThresholdWithLabel'
+          nullable: true
+          type: array
+        visualization:
+          $ref: '#/components/schemas/DashboardtypesBasicVisualization'
+      type: object
+    DashboardtypesScatterPlotPoints:
+      properties:
+        maxSize:
+          $ref: '#/components/schemas/DashboardtypesPointDiameter'
+        minSize:
+          $ref: '#/components/schemas/DashboardtypesPointDiameter'
+        opacity:
+          $ref: '#/components/schemas/DashboardtypesPointOpacity'
+        size:
+          $ref: '#/components/schemas/DashboardtypesPointDiameter'
+      type: object
     DashboardtypesSource:
       enum:
       - user
@@ -7617,8 +7730,6 @@ components:
       type: object
     PromotetypesPromotePath:
       properties:
-        context:
-          type: string
         indexes:
           items:
             $ref: '#/components/schemas/PromotetypesWrappedIndex'
@@ -7627,12 +7738,6 @@ components:
           type: string
         promote:
           type: boolean
-        signal:
-          type: string
-      required:
-      - signal
-      - context
-      - path
       type: object
     PromotetypesWrappedIndex:
       properties:
@@ -13108,6 +13213,110 @@ paths:
       tags:
       - llmpricingrules
       x-signoz-stability: alpha
+  /api/v1/logs/promote_paths:
+    get:
+      deprecated: false
+      description: This endpoints promotes and indexes paths
+      operationId: ListPromotedAndIndexedPaths
+      responses:
+        "200":
+          content:
+            application/json:
+              schema:
+                properties:
+                  data:
+                    items:
+                      $ref: '#/components/schemas/PromotetypesPromotePath'
+                    nullable: true
+                    type: array
+                  status:
+                    type: string
+                required:
+                - status
+                - data
+                type: object
+          description: OK
+        "400":
+          content:
+            application/json:
+              schema:
+                $ref: '#/components/schemas/RenderErrorResponse'
+          description: Bad Request
+        "401":
+          content:
+            application/json:
+              schema:
+                $ref: '#/components/schemas/RenderErrorResponse'
+          description: Unauthorized
+        "403":
+          content:
+            application/json:
+              schema:
+                $ref: '#/components/schemas/RenderErrorResponse'
+          description: Forbidden
+        "500":
+          content:
+            application/json:
+              schema:
+                $ref: '#/components/schemas/RenderErrorResponse'
+          description: Internal Server Error
+      security:
+      - api_key:
+        - VIEWER
+      - tokenizer:
+        - VIEWER
+      summary: Promote and index paths
+      tags:
+      - logs
+      x-signoz-stability: alpha
+    post:
+      deprecated: false
+      description: This endpoints promotes and indexes paths
+      operationId: HandlePromoteAndIndexPaths
+      requestBody:
+        content:
+          application/json:
+            schema:
+              items:
+                $ref: '#/components/schemas/PromotetypesPromotePath'
+              nullable: true
+              type: array
+      responses:
+        "201":
+          description: Created
+        "400":
+          content:
+            application/json:
+              schema:
+                $ref: '#/components/schemas/RenderErrorResponse'
+          description: Bad Request
+        "401":
+          content:
+            application/json:
+              schema:
+                $ref: '#/components/schemas/RenderErrorResponse'
+          description: Unauthorized
+        "403":
+          content:
+            application/json:
+              schema:
+                $ref: '#/components/schemas/RenderErrorResponse'
+          description: Forbidden
+        "500":
+          content:
+            application/json:
+              schema:
+                $ref: '#/components/schemas/RenderErrorResponse'
+          description: Internal Server Error
+      security:
+      - api_key:
+        - EDITOR
+      - tokenizer:
+        - EDITOR
+      summary: Promote and index paths
+      tags:
+      - logs
+      x-signoz-stability: alpha
   /api/v1/org/preferences:
     get:
       deprecated: false
@@ -13279,133 +13488,6 @@ paths:
       tags:
       - preferences
       x-signoz-stability: alpha
-  /api/v1/promoted_path:
-    get:
-      deprecated: false
-      description: This endpoint lists the promoted paths of every JSON column, each
-        annotated with its signal and context. The signal, context, promoted and indexes
-        query parameters filter the listing.
-      operationId: ListPromotedPaths
-      parameters:
-      - in: query
-        name: signal
-        schema:
-          type: string
-      - in: query
-        name: context
-        schema:
-          type: string
-      - in: query
-        name: promoted
-        schema:
-          nullable: true
-          type: boolean
-      - in: query
-        name: indexes
-        schema:
-          nullable: true
-          type: boolean
-      responses:
-        "200":
-          content:
-            application/json:
-              schema:
-                properties:
-                  data:
-                    items:
-                      $ref: '#/components/schemas/PromotetypesPromotePath'
-                    nullable: true
-                    type: array
-                  status:
-                    type: string
-                required:
-                - status
-                - data
-                type: object
-          description: OK
-        "400":
-          content:
-            application/json:
-              schema:
-                $ref: '#/components/schemas/RenderErrorResponse'
-          description: Bad Request
-        "401":
-          content:
-            application/json:
-              schema:
-                $ref: '#/components/schemas/RenderErrorResponse'
-          description: Unauthorized
-        "403":
-          content:
-            application/json:
-              schema:
-                $ref: '#/components/schemas/RenderErrorResponse'
-          description: Forbidden
-        "500":
-          content:
-            application/json:
-              schema:
-                $ref: '#/components/schemas/RenderErrorResponse'
-          description: Internal Server Error
-      security:
-      - api_key:
-        - VIEWER
-      - tokenizer:
-        - VIEWER
-      summary: List promoted paths
-      tags:
-      - promote
-      x-signoz-stability: alpha
-    post:
-      deprecated: false
-      description: This endpoint promotes paths of JSON columns to their promoted
-        columns. Each path names its promotion domain with its signal and context,
-        e.g. traces/attribute.
-      operationId: PromotePaths
-      requestBody:
-        content:
-          application/json:
-            schema:
-              items:
-                $ref: '#/components/schemas/PromotetypesPromotePath'
-              nullable: true
-              type: array
-      responses:
-        "201":
-          description: Created
-        "400":
-          content:
-            application/json:
-              schema:
-                $ref: '#/components/schemas/RenderErrorResponse'
-          description: Bad Request
-        "401":
-          content:
-            application/json:
-              schema:
-                $ref: '#/components/schemas/RenderErrorResponse'
-          description: Unauthorized
-        "403":
-          content:
-            application/json:
-              schema:
-                $ref: '#/components/schemas/RenderErrorResponse'
-          description: Forbidden
-        "500":
-          content:
-            application/json:
-              schema:
-                $ref: '#/components/schemas/RenderErrorResponse'
-          description: Internal Server Error
-      security:
-      - api_key:
-        - EDITOR
-      - tokenizer:
-        - EDITOR
-      summary: Promote paths
-      tags:
-      - promote
-      x-signoz-stability: alpha
   /api/v1/roles:
     get:
       deprecated: false

frontend/__mocks__/uplotMock.ts

@@ -48,6 +48,7 @@ const mockPaths = {
 const mockTzDate = jest.fn(
 	(date: Date, _timezone: string) => new Date(date.getTime()),
 );
+const mockOrient = jest.fn();
 
 // Mock uPlot constructor - this needs to be a proper constructor function
 function MockUPlot(
@@ -61,6 +62,9 @@ function MockUPlot(
 // Add static methods to the constructor
 MockUPlot.tzDate = mockTzDate;
 MockUPlot.paths = mockPaths;
+MockUPlot.orient = mockOrient;
+// Pinned so canvas-space maths in path builders is deterministic under jsdom.
+MockUPlot.pxRatio = 1;
 
 // Export the constructor as default
 export default MockUPlot;

frontend/src/api/generated/services/logs/index.ts

@@ -4,15 +4,23 @@
  * * regenerate with 'pnpm generate:api'
  * SigNoz
  */
-import { useMutation } from 'react-query';
+import { useMutation, useQuery } from 'react-query';
 import type {
+	InvalidateOptions,
 	MutationFunction,
+	QueryClient,
+	QueryFunction,
+	QueryKey,
 	UseMutationOptions,
 	UseMutationResult,
+	UseQueryOptions,
+	UseQueryResult,
 } from 'react-query';
 
 import type {
 	HandleExportRawDataPOSTParams,
+	ListPromotedAndIndexedPaths200,
+	PromotetypesPromotePathDTO,
 	Querybuildertypesv5QueryRangeRequestDTO,
 	RenderErrorResponseDTO,
 } from '../sigNoz.schemas';
@@ -20,6 +28,26 @@ import type {
 import { GeneratedAPIInstance } from '../../../generatedAPIInstance';
 import type { ErrorType, BodyType } from '../../../generatedAPIInstance';
 
+const withQueryKey = <T extends object, K>(
+	query: T,
+	queryKey: K,
+): T & { queryKey: K } => {
+	const result = { queryKey } as T & { queryKey: K };
+	for (const key of Object.keys(query)) {
+		// The explicit queryKey always wins, matching the previous
+		// `{ ...query, queryKey }` spread where it was set last.
+		if (key === 'queryKey') {
+			continue;
+		}
+		Object.defineProperty(result, key, {
+			enumerable: true,
+			configurable: true,
+			get: () => (query as Record<string, unknown>)[key],
+		});
+	}
+	return result;
+};
+
 /**
  * This endpoints allows complex query exporting raw data for traces and logs
  * @summary Export raw data
@@ -121,3 +149,175 @@ export const useHandleExportRawDataPOST = <
 > => {
 	return useMutation(getHandleExportRawDataPOSTMutationOptions(options));
 };
+/**
+ * This endpoints promotes and indexes paths
+ * @summary Promote and index paths
+ */
+export const listPromotedAndIndexedPaths = (signal?: AbortSignal) => {
+	return GeneratedAPIInstance<ListPromotedAndIndexedPaths200>({
+		url: `/api/v1/logs/promote_paths`,
+		method: 'GET',
+		signal,
+	});
+};
+
+export const getListPromotedAndIndexedPathsQueryKey = () => {
+	return [`/api/v1/logs/promote_paths`] as const;
+};
+
+export const getListPromotedAndIndexedPathsQueryOptions = <
+	TData = Awaited<ReturnType<typeof listPromotedAndIndexedPaths>>,
+	TError = ErrorType<RenderErrorResponseDTO>,
+>(options?: {
+	query?: UseQueryOptions<
+		Awaited<ReturnType<typeof listPromotedAndIndexedPaths>>,
+		TError,
+		TData
+	>;
+}) => {
+	const { query: queryOptions } = options ?? {};
+
+	const queryKey =
+		queryOptions?.queryKey ?? getListPromotedAndIndexedPathsQueryKey();
+
+	const queryFn: QueryFunction<
+		Awaited<ReturnType<typeof listPromotedAndIndexedPaths>>
+	> = ({ signal }) => listPromotedAndIndexedPaths(signal);
+
+	return { queryKey, queryFn, ...queryOptions } as UseQueryOptions<
+		Awaited<ReturnType<typeof listPromotedAndIndexedPaths>>,
+		TError,
+		TData
+	> & { queryKey: QueryKey };
+};
+
+export type ListPromotedAndIndexedPathsQueryResult = NonNullable<
+	Awaited<ReturnType<typeof listPromotedAndIndexedPaths>>
+>;
+export type ListPromotedAndIndexedPathsQueryError =
+	ErrorType<RenderErrorResponseDTO>;
+
+/**
+ * @summary Promote and index paths
+ */
+
+export function useListPromotedAndIndexedPaths<
+	TData = Awaited<ReturnType<typeof listPromotedAndIndexedPaths>>,
+	TError = ErrorType<RenderErrorResponseDTO>,
+>(options?: {
+	query?: UseQueryOptions<
+		Awaited<ReturnType<typeof listPromotedAndIndexedPaths>>,
+		TError,
+		TData
+	>;
+}): UseQueryResult<TData, TError> & { queryKey: QueryKey } {
+	const queryOptions = getListPromotedAndIndexedPathsQueryOptions(options);
+
+	const query = useQuery(queryOptions) as UseQueryResult<TData, TError> & {
+		queryKey: QueryKey;
+	};
+
+	return withQueryKey(query, queryOptions.queryKey);
+}
+
+/**
+ * @summary Promote and index paths
+ */
+export const invalidateListPromotedAndIndexedPaths = async (
+	queryClient: QueryClient,
+	options?: InvalidateOptions,
+): Promise<QueryClient> => {
+	await queryClient.invalidateQueries(
+		{ queryKey: getListPromotedAndIndexedPathsQueryKey() },
+		options,
+	);
+
+	return queryClient;
+};
+
+/**
+ * This endpoints promotes and indexes paths
+ * @summary Promote and index paths
+ */
+export const handlePromoteAndIndexPaths = (
+	promotetypesPromotePathDTONull?: BodyType<
+		PromotetypesPromotePathDTO[] | null
+	> | null,
+	signal?: AbortSignal,
+) => {
+	return GeneratedAPIInstance<void>({
+		url: `/api/v1/logs/promote_paths`,
+		method: 'POST',
+		headers: { 'Content-Type': 'application/json' },
+		data: promotetypesPromotePathDTONull,
+		signal,
+	});
+};
+
+export const getHandlePromoteAndIndexPathsMutationOptions = <
+	TError = ErrorType<RenderErrorResponseDTO>,
+	TContext = unknown,
+>(options?: {
+	mutation?: UseMutationOptions<
+		Awaited<ReturnType<typeof handlePromoteAndIndexPaths>>,
+		TError,
+		{ data?: BodyType<PromotetypesPromotePathDTO[] | null> },
+		TContext
+	>;
+}): UseMutationOptions<
+	Awaited<ReturnType<typeof handlePromoteAndIndexPaths>>,
+	TError,
+	{ data?: BodyType<PromotetypesPromotePathDTO[] | null> },
+	TContext
+> => {
+	const mutationKey = ['handlePromoteAndIndexPaths'];
+	const { mutation: mutationOptions } = options
+		? options.mutation &&
+			'mutationKey' in options.mutation &&
+			options.mutation.mutationKey
+			? options
+			: { ...options, mutation: { ...options.mutation, mutationKey } }
+		: { mutation: { mutationKey } };
+
+	const mutationFn: MutationFunction<
+		Awaited<ReturnType<typeof handlePromoteAndIndexPaths>>,
+		{ data?: BodyType<PromotetypesPromotePathDTO[] | null> }
+	> = (props) => {
+		const { data } = props ?? {};
+
+		return handlePromoteAndIndexPaths(data);
+	};
+
+	return { mutationFn, ...mutationOptions };
+};
+
+export type HandlePromoteAndIndexPathsMutationResult = NonNullable<
+	Awaited<ReturnType<typeof handlePromoteAndIndexPaths>>
+>;
+export type HandlePromoteAndIndexPathsMutationBody =
+	| BodyType<PromotetypesPromotePathDTO[] | null>
+	| undefined;
+export type HandlePromoteAndIndexPathsMutationError =
+	ErrorType<RenderErrorResponseDTO>;
+
+/**
+ * @summary Promote and index paths
+ */
+export const useHandlePromoteAndIndexPaths = <
+	TError = ErrorType<RenderErrorResponseDTO>,
+	TContext = unknown,
+>(options?: {
+	mutation?: UseMutationOptions<
+		Awaited<ReturnType<typeof handlePromoteAndIndexPaths>>,
+		TError,
+		{ data?: BodyType<PromotetypesPromotePathDTO[] | null> },
+		TContext
+	>;
+}): UseMutationResult<
+	Awaited<ReturnType<typeof handlePromoteAndIndexPaths>>,
+	TError,
+	{ data?: BodyType<PromotetypesPromotePathDTO[] | null> },
+	TContext
+> => {
+	return useMutation(getHandlePromoteAndIndexPathsMutationOptions(options));
+};

frontend/src/api/generated/services/promote/index.ts

@@ -1,232 +0,0 @@
-/**
- * ! Do not edit manually
- * * The file has been auto-generated using Orval for SigNoz
- * * regenerate with 'pnpm generate:api'
- * SigNoz
- */
-import { useMutation, useQuery } from 'react-query';
-import type {
-	InvalidateOptions,
-	MutationFunction,
-	QueryClient,
-	QueryFunction,
-	QueryKey,
-	UseMutationOptions,
-	UseMutationResult,
-	UseQueryOptions,
-	UseQueryResult,
-} from 'react-query';
-
-import type {
-	ListPromotedPaths200,
-	ListPromotedPathsParams,
-	PromotetypesPromotePathDTO,
-	RenderErrorResponseDTO,
-} from '../sigNoz.schemas';
-
-import { GeneratedAPIInstance } from '../../../generatedAPIInstance';
-import type { ErrorType, BodyType } from '../../../generatedAPIInstance';
-
-const withQueryKey = <T extends object, K>(
-	query: T,
-	queryKey: K,
-): T & { queryKey: K } => {
-	const result = { queryKey } as T & { queryKey: K };
-	for (const key of Object.keys(query)) {
-		// The explicit queryKey always wins, matching the previous
-		// `{ ...query, queryKey }` spread where it was set last.
-		if (key === 'queryKey') {
-			continue;
-		}
-		Object.defineProperty(result, key, {
-			enumerable: true,
-			configurable: true,
-			get: () => (query as Record<string, unknown>)[key],
-		});
-	}
-	return result;
-};
-
-/**
- * This endpoint lists the promoted paths of every JSON column, each annotated with its signal and context. The signal, context, promoted and indexes query parameters filter the listing.
- * @summary List promoted paths
- */
-export const listPromotedPaths = (
-	params?: ListPromotedPathsParams,
-	signal?: AbortSignal,
-) => {
-	return GeneratedAPIInstance<ListPromotedPaths200>({
-		url: `/api/v1/promoted_path`,
-		method: 'GET',
-		params,
-		signal,
-	});
-};
-
-export const getListPromotedPathsQueryKey = (
-	params?: ListPromotedPathsParams,
-) => {
-	return [`/api/v1/promoted_path`, ...(params ? [params] : [])] as const;
-};
-
-export const getListPromotedPathsQueryOptions = <
-	TData = Awaited<ReturnType<typeof listPromotedPaths>>,
-	TError = ErrorType<RenderErrorResponseDTO>,
->(
-	params?: ListPromotedPathsParams,
-	options?: {
-		query?: UseQueryOptions<
-			Awaited<ReturnType<typeof listPromotedPaths>>,
-			TError,
-			TData
-		>;
-	},
-) => {
-	const { query: queryOptions } = options ?? {};
-
-	const queryKey =
-		queryOptions?.queryKey ?? getListPromotedPathsQueryKey(params);
-
-	const queryFn: QueryFunction<
-		Awaited<ReturnType<typeof listPromotedPaths>>
-	> = ({ signal }) => listPromotedPaths(params, signal);
-
-	return { queryKey, queryFn, ...queryOptions } as UseQueryOptions<
-		Awaited<ReturnType<typeof listPromotedPaths>>,
-		TError,
-		TData
-	> & { queryKey: QueryKey };
-};
-
-export type ListPromotedPathsQueryResult = NonNullable<
-	Awaited<ReturnType<typeof listPromotedPaths>>
->;
-export type ListPromotedPathsQueryError = ErrorType<RenderErrorResponseDTO>;
-
-/**
- * @summary List promoted paths
- */
-
-export function useListPromotedPaths<
-	TData = Awaited<ReturnType<typeof listPromotedPaths>>,
-	TError = ErrorType<RenderErrorResponseDTO>,
->(
-	params?: ListPromotedPathsParams,
-	options?: {
-		query?: UseQueryOptions<
-			Awaited<ReturnType<typeof listPromotedPaths>>,
-			TError,
-			TData
-		>;
-	},
-): UseQueryResult<TData, TError> & { queryKey: QueryKey } {
-	const queryOptions = getListPromotedPathsQueryOptions(params, options);
-
-	const query = useQuery(queryOptions) as UseQueryResult<TData, TError> & {
-		queryKey: QueryKey;
-	};
-
-	return withQueryKey(query, queryOptions.queryKey);
-}
-
-/**
- * @summary List promoted paths
- */
-export const invalidateListPromotedPaths = async (
-	queryClient: QueryClient,
-	params?: ListPromotedPathsParams,
-	options?: InvalidateOptions,
-): Promise<QueryClient> => {
-	await queryClient.invalidateQueries(
-		{ queryKey: getListPromotedPathsQueryKey(params) },
-		options,
-	);
-
-	return queryClient;
-};
-
-/**
- * This endpoint promotes paths of JSON columns to their promoted columns. Each path names its promotion domain with its signal and context, e.g. traces/attribute.
- * @summary Promote paths
- */
-export const promotePaths = (
-	promotetypesPromotePathDTONull?: BodyType<
-		PromotetypesPromotePathDTO[] | null
-	> | null,
-	signal?: AbortSignal,
-) => {
-	return GeneratedAPIInstance<void>({
-		url: `/api/v1/promoted_path`,
-		method: 'POST',
-		headers: { 'Content-Type': 'application/json' },
-		data: promotetypesPromotePathDTONull,
-		signal,
-	});
-};
-
-export const getPromotePathsMutationOptions = <
-	TError = ErrorType<RenderErrorResponseDTO>,
-	TContext = unknown,
->(options?: {
-	mutation?: UseMutationOptions<
-		Awaited<ReturnType<typeof promotePaths>>,
-		TError,
-		{ data?: BodyType<PromotetypesPromotePathDTO[] | null> },
-		TContext
-	>;
-}): UseMutationOptions<
-	Awaited<ReturnType<typeof promotePaths>>,
-	TError,
-	{ data?: BodyType<PromotetypesPromotePathDTO[] | null> },
-	TContext
-> => {
-	const mutationKey = ['promotePaths'];
-	const { mutation: mutationOptions } = options
-		? options.mutation &&
-			'mutationKey' in options.mutation &&
-			options.mutation.mutationKey
-			? options
-			: { ...options, mutation: { ...options.mutation, mutationKey } }
-		: { mutation: { mutationKey } };
-
-	const mutationFn: MutationFunction<
-		Awaited<ReturnType<typeof promotePaths>>,
-		{ data?: BodyType<PromotetypesPromotePathDTO[] | null> }
-	> = (props) => {
-		const { data } = props ?? {};
-
-		return promotePaths(data);
-	};
-
-	return { mutationFn, ...mutationOptions };
-};
-
-export type PromotePathsMutationResult = NonNullable<
-	Awaited<ReturnType<typeof promotePaths>>
->;
-export type PromotePathsMutationBody =
-	| BodyType<PromotetypesPromotePathDTO[] | null>
-	| undefined;
-export type PromotePathsMutationError = ErrorType<RenderErrorResponseDTO>;
-
-/**
- * @summary Promote paths
- */
-export const usePromotePaths = <
-	TError = ErrorType<RenderErrorResponseDTO>,
-	TContext = unknown,
->(options?: {
-	mutation?: UseMutationOptions<
-		Awaited<ReturnType<typeof promotePaths>>,
-		TError,
-		{ data?: BodyType<PromotetypesPromotePathDTO[] | null> },
-		TContext
-	>;
-}): UseMutationResult<
-	Awaited<ReturnType<typeof promotePaths>>,
-	TError,
-	{ data?: BodyType<PromotetypesPromotePathDTO[] | null> },
-	TContext
-> => {
-	return useMutation(getPromotePathsMutationOptions(options));
-};

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

@@ -4305,6 +4305,12 @@ export interface DashboardtypesAreaChartPanelSpecDTO {
 	visualization?: DashboardtypesAreaChartVisualizationDTO;
 }
 
+export enum DashboardtypesAxisScaleDTO {
+	auto = 'auto',
+	linear = 'linear',
+	log = 'log',
+	symlog = 'symlog',
+}
 export interface DashboardtypesBarChartVisualizationDTO {
 	/**
 	 * @type boolean
@@ -5224,6 +5230,101 @@ export interface DashboardtypesPanelPluginVariantGithubComSigNozSignozPkgTypesDa
 	spec: DashboardtypesTextPanelSpecDTO;
 }
 
+export enum DashboardtypesPanelPluginVariantGithubComSigNozSignozPkgTypesDashboardtypesScatterPlotPanelSpecDTOKind {
+	'signoz/ScatterPlotPanel' = 'signoz/ScatterPlotPanel',
+}
+export interface DashboardtypesScatterPlotAxisDTO {
+	/**
+	 * @type string
+	 * @description Axis title. Empty draws none.
+	 */
+	label?: string;
+	scale?: DashboardtypesAxisScaleDTO;
+	/**
+	 * @type number,null
+	 */
+	softMax?: number | null;
+	/**
+	 * @type number,null
+	 */
+	softMin?: number | null;
+}
+
+export interface DashboardtypesScatterPlotAxesDTO {
+	x?: DashboardtypesScatterPlotAxisDTO;
+	y?: DashboardtypesScatterPlotAxisDTO;
+}
+
+/**
+ * @minimum 2
+ * @maximum 40
+ * @nullable
+ */
+export type DashboardtypesPointDiameterDTO = number | null;
+
+/**
+ * @minimum 0.1
+ * @maximum 1
+ * @nullable
+ */
+export type DashboardtypesPointOpacityDTO = number | null;
+
+export interface DashboardtypesScatterPlotPointsDTO {
+	maxSize?: DashboardtypesPointDiameterDTO | null;
+	minSize?: DashboardtypesPointDiameterDTO | null;
+	opacity?: DashboardtypesPointOpacityDTO | null;
+	size?: DashboardtypesPointDiameterDTO | null;
+}
+
+export interface DashboardtypesScatterPlotChartAppearanceDTO {
+	points?: DashboardtypesScatterPlotPointsDTO;
+}
+
+export interface DashboardtypesScatterPlotDimensionsDTO {
+	/**
+	 * @type array,null
+	 * @description Group-by label names (e.g. k8s.namespace.name) whose combined values colour dots and drive the legend. Empty colours by every group-by label.
+	 */
+	color?: string[] | null;
+	/**
+	 * @type string
+	 * @description Value column key that scales dot size. Empty draws every dot at the default size.
+	 */
+	size?: string;
+	/**
+	 * @type string
+	 * @description Value column key (queryName, or queryName.expression for a multi-aggregation query) plotted on the x axis. Empty uses the first value column.
+	 */
+	x?: string;
+	/**
+	 * @type string
+	 * @description Value column key plotted on the y axis. Empty uses the second value column.
+	 */
+	y?: string;
+}
+
+export interface DashboardtypesScatterPlotPanelSpecDTO {
+	axes?: DashboardtypesScatterPlotAxesDTO;
+	chartAppearance?: DashboardtypesScatterPlotChartAppearanceDTO;
+	dimensions?: DashboardtypesScatterPlotDimensionsDTO;
+	formatting?: DashboardtypesTableFormattingDTO;
+	legend?: DashboardtypesLegendDTO;
+	/**
+	 * @type array,null
+	 */
+	thresholds?: DashboardtypesThresholdWithLabelDTO[] | null;
+	visualization?: DashboardtypesBasicVisualizationDTO;
+}
+
+export interface DashboardtypesPanelPluginVariantGithubComSigNozSignozPkgTypesDashboardtypesScatterPlotPanelSpecDTO {
+	/**
+	 * @enum signoz/ScatterPlotPanel
+	 * @type string
+	 */
+	kind: DashboardtypesPanelPluginVariantGithubComSigNozSignozPkgTypesDashboardtypesScatterPlotPanelSpecDTOKind;
+	spec: DashboardtypesScatterPlotPanelSpecDTO;
+}
+
 export type DashboardtypesPanelPluginDTO =
 	| DashboardtypesPanelPluginVariantGithubComSigNozSignozPkgTypesDashboardtypesTimeSeriesPanelSpecDTO
 	| DashboardtypesPanelPluginVariantGithubComSigNozSignozPkgTypesDashboardtypesBarChartPanelSpecDTO
@@ -5233,7 +5334,8 @@ export type DashboardtypesPanelPluginDTO =
 	| DashboardtypesPanelPluginVariantGithubComSigNozSignozPkgTypesDashboardtypesTablePanelSpecDTO
 	| DashboardtypesPanelPluginVariantGithubComSigNozSignozPkgTypesDashboardtypesHistogramPanelSpecDTO
 	| DashboardtypesPanelPluginVariantGithubComSigNozSignozPkgTypesDashboardtypesListPanelSpecDTO
-	| DashboardtypesPanelPluginVariantGithubComSigNozSignozPkgTypesDashboardtypesTextPanelSpecDTO;
+	| DashboardtypesPanelPluginVariantGithubComSigNozSignozPkgTypesDashboardtypesTextPanelSpecDTO
+	| DashboardtypesPanelPluginVariantGithubComSigNozSignozPkgTypesDashboardtypesScatterPlotPanelSpecDTO;
 
 export enum Querybuildertypesv5RequestTypeDTO {
 	scalar = 'scalar',
@@ -6159,6 +6261,7 @@ export enum DashboardtypesPanelPluginKindDTO {
 	'signoz/HistogramPanel' = 'signoz/HistogramPanel',
 	'signoz/ListPanel' = 'signoz/ListPanel',
 	'signoz/TextPanel' = 'signoz/TextPanel',
+	'signoz/ScatterPlotPanel' = 'signoz/ScatterPlotPanel',
 }
 /**
  * @nullable
@@ -9369,10 +9472,6 @@ export interface PromotetypesWrappedIndexDTO {
 }
 
 export interface PromotetypesPromotePathDTO {
-	/**
-	 * @type string
-	 */
-	context: string;
 	/**
 	 * @type array
 	 */
@@ -9380,15 +9479,11 @@ export interface PromotetypesPromotePathDTO {
 	/**
 	 * @type string
 	 */
-	path: string;
+	path?: string;
 	/**
 	 * @type boolean
 	 */
 	promote?: boolean;
-	/**
-	 * @type string
-	 */
-	signal: string;
 }
 
 export interface Querybuildertypesv5AggregationMetaDTO {
@@ -12478,6 +12573,17 @@ export type ListUnmappedLLMModels200 = {
 	status: string;
 };
 
+export type ListPromotedAndIndexedPaths200 = {
+	/**
+	 * @type array,null
+	 */
+	data: PromotetypesPromotePathDTO[] | null;
+	/**
+	 * @type string
+	 */
+	status: string;
+};
+
 export type ListOrgPreferences200 = {
 	/**
 	 * @type array
@@ -12503,40 +12609,6 @@ export type GetOrgPreference200 = {
 export type UpdateOrgPreferencePathParameters = {
 	name: string;
 };
-export type ListPromotedPathsParams = {
-	/**
-	 * @type string
-	 * @description undefined
-	 */
-	signal?: string;
-	/**
-	 * @type string
-	 * @description undefined
-	 */
-	context?: string;
-	/**
-	 * @type boolean,null
-	 * @description undefined
-	 */
-	promoted?: boolean | null;
-	/**
-	 * @type boolean,null
-	 * @description undefined
-	 */
-	indexes?: boolean | null;
-};
-
-export type ListPromotedPaths200 = {
-	/**
-	 * @type array,null
-	 */
-	data: PromotetypesPromotePathDTO[] | null;
-	/**
-	 * @type string
-	 */
-	status: string;
-};
-
 export type ListRoles200 = {
 	/**
 	 * @type array

frontend/src/api/v5/queryRange/prepareQueryRangePayloadV5.test.ts

@@ -21,6 +21,7 @@ import { DataSource, ReduceOperators } from 'types/common/queryBuilder';
 
 import {
 	convertBuilderQueriesToV5,
+	mapPanelTypeToRequestType,
 	prepareQueryRangePayloadV5,
 } from './prepareQueryRangePayloadV5';
 
@@ -904,6 +905,12 @@ describe('prepareQueryRangePayloadV5', () => {
 	});
 });
 
+describe('mapPanelTypeToRequestType', () => {
+	it('sends a scatter plot as scalar, like a table', () => {
+		expect(mapPanelTypeToRequestType(PANEL_TYPES.SCATTER)).toBe('scalar');
+	});
+});
+
 describe('convertBuilderQueriesToV5 having normalization', () => {
 	const buildSpec = (having: unknown): MetricBuilderQuery => {
 		const [envelope] = convertBuilderQueriesToV5(

frontend/src/api/v5/queryRange/prepareQueryRangePayloadV5.ts

@@ -51,6 +51,7 @@ export function mapPanelTypeToRequestType(panelType: PANEL_TYPES): RequestType {
 		case PANEL_TYPES.BAR:
 			return 'time_series';
 		case PANEL_TYPES.TABLE:
+		case PANEL_TYPES.SCATTER:
 		case PANEL_TYPES.PIE:
 		case PANEL_TYPES.VALUE:
 			return 'scalar';
@@ -277,6 +278,7 @@ export function createAggregation(
 		queryData.dataSource === DataSource.METRICS &&
 		panelType &&
 		(panelType === PANEL_TYPES.TABLE ||
+			panelType === PANEL_TYPES.SCATTER ||
 			panelType === PANEL_TYPES.PIE ||
 			panelType === PANEL_TYPES.VALUE);
 

frontend/src/components/QueryBuilderV2/QueryV2/QueryAggregation/QueryAggregation.tsx

@@ -43,7 +43,9 @@ function QueryAggregationOptions({
 
 		if (
 			isNonMetricSource &&
-			(panelType === PANEL_TYPES.TABLE || panelType === PANEL_TYPES.PIE)
+			(panelType === PANEL_TYPES.TABLE ||
+				panelType === PANEL_TYPES.SCATTER ||
+				panelType === PANEL_TYPES.PIE)
 		) {
 			return { hidden: true, disabled: false, reason: undefined };
 		}

frontend/src/components/QueryBuilderV2/QueryV2/QueryV2.tsx

@@ -95,6 +95,7 @@ export const QueryV2 = forwardRef(function QueryV2(
 		() =>
 			dataSource === DataSource.METRICS &&
 			(panelType === PANEL_TYPES.TABLE ||
+				panelType === PANEL_TYPES.SCATTER ||
 				panelType === PANEL_TYPES.PIE ||
 				panelType === PANEL_TYPES.VALUE),
 		[dataSource, panelType],

frontend/src/components/QueryBuilderV2/__tests__/QueryAggregation.test.tsx

@@ -0,0 +1,45 @@
+import { initialQueriesMap, PANEL_TYPES } from 'constants/queryBuilder';
+import { render, screen } from 'tests/test-utils';
+import type { IBuilderQuery } from 'types/api/queryBuilder/queryBuilderData';
+import { DataSource } from 'types/common/queryBuilder';
+
+import QueryAggregationOptions from '../QueryV2/QueryAggregation/QueryAggregation';
+
+jest.mock('../QueryV2/QueryAggregation/QueryAggregationSelect', () => ({
+	__esModule: true,
+	default: (): null => null,
+}));
+
+const queryData = initialQueriesMap.traces.builder
+	.queryData[0] as IBuilderQuery;
+
+function renderFor(panelType: PANEL_TYPES, dataSource: DataSource): void {
+	render(
+		<QueryAggregationOptions
+			dataSource={dataSource}
+			panelType={panelType}
+			onAggregationIntervalChange={jest.fn()}
+			queryData={queryData}
+		/>,
+	);
+}
+
+describe('QueryAggregationOptions step interval', () => {
+	it.each([PANEL_TYPES.TABLE, PANEL_TYPES.SCATTER, PANEL_TYPES.PIE])(
+		'is hidden for a %s panel over traces, which reduces the whole window',
+		(panelType) => {
+			renderFor(panelType, DataSource.TRACES);
+			expect(screen.queryByText('every')).not.toBeInTheDocument();
+		},
+	);
+
+	it('stays for a scatter plot over metrics, where it sets the series step', () => {
+		renderFor(PANEL_TYPES.SCATTER, DataSource.METRICS);
+		expect(screen.getByText('every')).toBeInTheDocument();
+	});
+
+	it('stays for a time series over traces', () => {
+		renderFor(PANEL_TYPES.TIME_SERIES, DataSource.TRACES);
+		expect(screen.getByText('every')).toBeInTheDocument();
+	});
+});

frontend/src/constants/localStorage.ts

@@ -47,5 +47,4 @@ export enum LOCALSTORAGE {
 	DASHBOARDS_LIST_VIEWS = 'DASHBOARDS_LIST_VIEWS',
 	DASHBOARD_V2_PANEL_COLUMN_WIDTHS = 'DASHBOARD_V2_PANEL_COLUMN_WIDTHS',
 	LLM_ATTRIBUTE_MAPPING_TEST_SPAN = 'LLM_ATTRIBUTE_MAPPING_TEST_SPAN',
-	SAVED_VIEW_ENABLED = 'SAVED_VIEW_ENABLED',
 }

frontend/src/constants/panelTypes.ts

@@ -34,6 +34,7 @@ export const getComponentForPanelType = (
 		[PANEL_TYPES.HISTOGRAM]: Uplot,
 		// Dashboards v2 renders this kind; nothing reaches the V1 chart map for it.
 		[PANEL_TYPES.TEXT]: null,
+		[PANEL_TYPES.SCATTER]: null,
 		[PANEL_TYPES.EMPTY_WIDGET]: null,
 	};
 

frontend/src/constants/queryBuilder.ts

@@ -337,6 +337,7 @@ export enum PANEL_TYPES {
 	TRACE = 'trace',
 	BAR = 'bar',
 	AREA = 'area',
+	SCATTER = 'scatter',
 	PIE = 'pie',
 	HISTOGRAM = 'histogram',
 	TEXT = 'text',

frontend/src/container/AppLayout/AppLayout.styles.scss

@@ -53,10 +53,6 @@
 		z-index: 0;
 		background: var(--l1-background);
 
-		// Column so the bottom strip sits under the scrolling content, not inside it.
-		display: flex;
-		flex-direction: column;
-
 		&.full-screen-content {
 			width: 100%;
 		}
@@ -74,9 +70,7 @@
 
 .chat-support-gateway {
 	position: fixed;
-	// Lifted above the bottom strip. Don't extend this pattern — new fixed-bottom
-	// UI belongs in the bounded layout, not in another offset here.
-	bottom: calc(20px + var(--bottom-strip-height, 0px));
+	bottom: 20px;
 	right: 20px;
 	z-index: 1000;
 

frontend/src/container/AppLayout/index.tsx

@@ -43,7 +43,6 @@ import { USER_PREFERENCES } from 'constants/userPreferences';
 import AIAssistantModal from 'container/AIAssistant/AIAssistantModal';
 import AIAssistantPanel from 'container/AIAssistant/AIAssistantPanel';
 import { useAIAssistantStore } from 'container/AIAssistant/store/useAIAssistantStore';
-import BottomStrip from 'container/BottomStrip';
 import SideNav from 'container/SideNav';
 import TopNav from 'container/TopNav';
 import dayjs from 'dayjs';
@@ -52,7 +51,6 @@ import { useIsDarkMode } from 'hooks/useDarkMode';
 import { useGetTenantLicense } from 'hooks/useGetTenantLicense';
 import { useIsAIAssistantEnabled } from 'hooks/useIsAIAssistantEnabled';
 import { useNotifications } from 'hooks/useNotifications';
-import { useSavedViewEnabled } from 'hooks/useSavedViewEnabled';
 import useTabVisibility from 'hooks/useTabFocus';
 import history from 'lib/history';
 import { isNull } from 'lodash-es';
@@ -404,7 +402,6 @@ function AppLayout(props: AppLayoutProps): JSX.Element {
 	}, [pathname]);
 
 	const isToDisplayLayout = isLoggedIn;
-	const isSavedViewEnabled = useSavedViewEnabled();
 
 	const routeKey = useMemo(() => getRouteKey(pathname), [pathname]);
 	const pageTitle = t(routeKey);
@@ -871,10 +868,6 @@ function AppLayout(props: AppLayoutProps): JSX.Element {
 								</OverlayScrollbar>
 							</LayoutContent>
 						</Sentry.ErrorBoundary>
-
-						{isSavedViewEnabled && isToDisplayLayout && !renderFullScreen && (
-							<BottomStrip />
-						)}
 					</div>
 
 					{isLoggedIn && isAIAssistantEnabled && (

frontend/src/container/AppLayout/styles.ts

@@ -12,12 +12,8 @@ export const Layout = styled(LayoutComponent)`
 	}
 `;
 
-// Takes the height left in `.app-content` after the bottom strip.
-// `min-height: 0` is not needed right now, overlayscrollbars already sets
-// `overflow: auto` here. Kept so this does not break if that goes away.
 export const LayoutContent = styled(LayoutComponent.Content)`
-	flex: 1;
-	min-height: 0;
+	height: 100%;
 	&::-webkit-scrollbar {
 		width: 0.1rem;
 	}

frontend/src/container/BottomStrip/BottomStrip.module.scss

@@ -1,36 +0,0 @@
-.strip {
-	display: flex;
-	align-items: center;
-	justify-content: space-between;
-	gap: var(--spacing-6);
-
-	flex-shrink: 0;
-	height: var(--bottom-strip-height);
-	padding: 0 var(--spacing-6);
-
-	background: var(--l2-background);
-	border-top: 1px solid var(--l2-border);
-
-	font-family: var(--font-family-sf-mono, monospace);
-
-	// Above page content, below the body-portalled overlays that are meant to
-	// cover the strip.
-	position: relative;
-	z-index: 1;
-}
-
-.left,
-.right {
-	display: flex;
-	align-items: center;
-	gap: var(--spacing-6);
-	min-width: 0;
-}
-
-// Temporary placeholder for the left slot. Replaced later.
-.version {
-	color: var(--l2-foreground);
-	white-space: nowrap;
-	overflow: hidden;
-	text-overflow: ellipsis;
-}

frontend/src/container/BottomStrip/__tests__/BottomStrip.test.tsx

@@ -1,49 +0,0 @@
-import { render } from 'tests/test-utils';
-
-import BottomStrip, {
-	BOTTOM_STRIP_HEIGHT,
-	BOTTOM_STRIP_HEIGHT_VAR,
-	BOTTOM_STRIP_ON_CLASS,
-} from '..';
-
-describe('BottomStrip', () => {
-	it('publishes the body class and height property while mounted', () => {
-		const { unmount } = render(<BottomStrip />);
-
-		expect(document.body.classList.contains(BOTTOM_STRIP_ON_CLASS)).toBe(true);
-		expect(document.body.style.getPropertyValue(BOTTOM_STRIP_HEIGHT_VAR)).toBe(
-			`${BOTTOM_STRIP_HEIGHT}px`,
-		);
-
-		unmount();
-
-		expect(document.body.classList.contains(BOTTOM_STRIP_ON_CLASS)).toBe(false);
-		expect(document.body.style.getPropertyValue(BOTTOM_STRIP_HEIGHT_VAR)).toBe(
-			'',
-		);
-	});
-
-	// The string is whatever the Go build injected, so it is rendered untouched —
-	// same as SideNav. Release tags carry the "v", local builds do not.
-	it.each([['v0.134.67'], ['main-64f1c2a']])(
-		'renders the build version %p exactly as given',
-		(version) => {
-			const { getByTestId } = render(<BottomStrip />, undefined, {
-				appContextOverrides: {
-					versionData: { version, ee: 'Y', setupCompleted: true },
-				},
-			});
-
-			expect(getByTestId('bottom-strip-version')).toHaveTextContent(version);
-		},
-	);
-
-	it('renders the strip without a version when none is available', () => {
-		const { getByTestId, queryByTestId } = render(<BottomStrip />, undefined, {
-			appContextOverrides: { versionData: null },
-		});
-
-		expect(getByTestId('bottom-strip')).toBeInTheDocument();
-		expect(queryByTestId('bottom-strip-version')).not.toBeInTheDocument();
-	});
-});

frontend/src/container/BottomStrip/index.tsx

@@ -1,42 +0,0 @@
-import { useLayoutEffect } from 'react';
-import { useAppContext } from 'providers/App/App';
-
-import styles from './BottomStrip.module.scss';
-
-export const BOTTOM_STRIP_HEIGHT = 24;
-
-export const BOTTOM_STRIP_ON_CLASS = 'bottom-strip-on';
-export const BOTTOM_STRIP_HEIGHT_VAR = '--bottom-strip-height';
-
-function BottomStrip(): JSX.Element {
-	const { versionData } = useAppContext();
-	const version = versionData?.version?.trim();
-
-	useLayoutEffect(() => {
-		document.body.classList.add(BOTTOM_STRIP_ON_CLASS);
-		document.body.style.setProperty(
-			BOTTOM_STRIP_HEIGHT_VAR,
-			`${BOTTOM_STRIP_HEIGHT}px`,
-		);
-
-		return (): void => {
-			document.body.classList.remove(BOTTOM_STRIP_ON_CLASS);
-			document.body.style.removeProperty(BOTTOM_STRIP_HEIGHT_VAR);
-		};
-	}, []);
-
-	return (
-		<div className={styles.strip} data-testid="bottom-strip">
-			<div className={styles.left}>
-				{version && (
-					<span className={styles.version} data-testid="bottom-strip-version">
-						{version}
-					</span>
-				)}
-			</div>
-			<div className={styles.right} />
-		</div>
-	);
-}
-
-export default BottomStrip;

frontend/src/container/CreateAlertV2/Footer/styles.scss

@@ -1,8 +1,6 @@
 .create-alert-v2-footer {
 	position: fixed;
-	// Lifted above the bottom strip. Don't extend this pattern — new fixed-bottom
-	// UI belongs in the bounded layout, not in another offset here.
-	bottom: var(--bottom-strip-height, 0px);
+	bottom: 0;
 	left: 63px;
 	right: 0;
 	background-color: var(--l1-background);

frontend/src/container/ExplorerOptions/ExplorerOptions.styles.scss

@@ -1,8 +1,6 @@
 .explorer-options-container {
 	position: fixed;
-	// Lifted above the bottom strip. Don't extend this pattern — new fixed-bottom
-	// UI belongs in the bounded layout, not in another offset here.
-	bottom: var(--bottom-strip-height, 0px);
+	bottom: 0px;
 	left: calc(50% + 240px);
 	transform: translate(calc(-50% - 120px), 0);
 	transition: left 0.2s linear;

frontend/src/container/ExplorerOptions/ExplorerOptionsHideArea.styles.scss

@@ -1,8 +1,6 @@
 .explorer-option-droppable-container {
 	position: fixed;
-	// Lifted above the bottom strip. Don't extend this pattern — new fixed-bottom
-	// UI belongs in the bounded layout, not in another offset here.
-	bottom: var(--bottom-strip-height, 0px);
+	bottom: 0;
 	width: -webkit-fill-available;
 	height: 24px;
 	display: flex;

frontend/src/container/Home/Home.styles.scss

@@ -1,6 +1,7 @@
 .home-container {
 	display: flex;
 	flex-direction: column;
+	min-height: 100vh;
 	overflow-y: auto;
 	height: 100%;
 	width: 100%;

frontend/src/container/Licenses/Licenses.styles.scss

@@ -1,4 +1,7 @@
 .licenses-page {
+	max-height: 100vh;
+	overflow: hidden;
+
 	.licenses-page-header {
 		border-bottom: 1px solid var(--l1-border);
 		background: var(--l1-background);
@@ -29,6 +32,7 @@
 
 		.licenses-page-content {
 			flex: 1;
+			height: calc(100vh - 48px);
 			background: var(--l1-background);
 			padding: 10px 8px;
 			overflow-y: auto;

frontend/src/container/ListAlertRules/ListAlertRules.module.scss

@@ -2,7 +2,7 @@
 	display: flex;
 	flex-direction: column;
 	gap: 1rem;
-	flex: 1;
+	height: calc(100vh - 62px);
 	min-height: 400px;
 }
 

frontend/src/container/MetricsExplorer/Summary/Summary.styles.scss

@@ -181,9 +181,7 @@
 
 		.ant-pagination {
 			position: fixed;
-			// Lifted above the bottom strip. Don't extend this pattern — new
-			// fixed-bottom UI belongs in the bounded layout, not in another offset here.
-			bottom: var(--bottom-strip-height, 0px);
+			bottom: 0;
 			width: calc(100% - 54px);
 			background: var(--l1-background);
 			padding: 16px;

frontend/src/container/TriggeredAlerts/TriggeredAlerts.module.scss

@@ -2,7 +2,7 @@
 	display: flex;
 	flex-direction: column;
 	gap: 1rem;
-	flex: 1;
+	height: calc(100vh - 62px);
 	min-height: 400px;
 	padding-top: var(--spacing-8);
 }

frontend/src/container/Version/Version.styles.scss

@@ -1,4 +1,7 @@
 .version-container {
+	max-height: 100vh;
+	overflow: hidden;
+
 	.version-page-header {
 		border-bottom: 1px solid var(--l1-border);
 		background: var(--l1-background);

frontend/src/container/WidgetCard/Card/FullView/contants.ts

@@ -28,6 +28,7 @@ export const PANEL_TYPES_VS_FULL_VIEW_TABLE: PanelTypeAndGraphManagerVisibilityP
 		TRACE: false,
 		BAR: true,
 		AREA: true,
+		SCATTER: false,
 		PIE: false,
 		HISTOGRAM: false,
 		TEXT: false,

frontend/src/container/WidgetCard/Panels/constants.ts

@@ -16,6 +16,7 @@ export const PanelTypeVsPanelWrapper = {
 	[PANEL_TYPES.TRACE]: null,
 	// Dashboards v2 renders this kind; the V1 wrapper map is never asked for it.
 	[PANEL_TYPES.TEXT]: null,
+	[PANEL_TYPES.SCATTER]: null,
 	[PANEL_TYPES.EMPTY_WIDGET]: null,
 	[PANEL_TYPES.PIE]: PiePanelWrapper,
 	[PANEL_TYPES.BAR]: BarPanel,

frontend/src/hooks/useSavedViewEnabled.ts

@@ -1,11 +0,0 @@
-import getLocalStorageKey from 'api/browser/localstorage/get';
-import { LOCALSTORAGE } from 'constants/localStorage';
-import { useState } from 'react';
-
-export function useSavedViewEnabled(): boolean {
-	const [isEnabled] = useState(
-		() => getLocalStorageKey(LOCALSTORAGE.SAVED_VIEW_ENABLED) === 'true',
-	);
-
-	return isEnabled;
-}

frontend/src/lib/query/panelTypeDataSourceFormValuesMap.ts

@@ -14,6 +14,7 @@ export type PartialPanelTypes = {
 	[PANEL_TYPES.AREA]: 'area';
 	[PANEL_TYPES.VALUE]: 'value';
 	[PANEL_TYPES.PIE]: 'pie';
+	[PANEL_TYPES.SCATTER]: 'scatter';
 	[PANEL_TYPES.HISTOGRAM]: 'histogram';
 };
 
@@ -135,6 +136,7 @@ export const panelTypeDataSourceFormValuesMap: Record<
 	[PANEL_TYPES.HISTOGRAM]: bySource(SERIES, SERIES_METRICS),
 	[PANEL_TYPES.TABLE]: bySource(SERIES, SCALAR_METRICS),
 	[PANEL_TYPES.PIE]: bySource(SERIES, SCALAR_METRICS),
+	[PANEL_TYPES.SCATTER]: bySource(SERIES, SCALAR_METRICS),
 	[PANEL_TYPES.VALUE]: bySource(SINGLE_VALUE, SINGLE_VALUE_METRICS),
 	[PANEL_TYPES.LIST]: bySource(RAW_ROWS, RAW_ROWS_METRICS),
 };

frontend/src/lib/uPlotV2/components/Tooltip/ScatterTooltip.module.scss

@@ -0,0 +1,100 @@
+// Surface matches the shared Tooltip: same tokens, same radius, no shadow.
+// Padding lives on the sections so a footer can reach the container edges.
+.container {
+	font-family: 'Inter';
+	font-size: 12px;
+	background: var(--l2-background);
+	-webkit-font-smoothing: antialiased;
+	color: var(--l2-foreground);
+	border-radius: 6px;
+	border: 1px solid var(--l2-border);
+	display: flex;
+	flex-direction: column;
+	min-width: 200px;
+
+	&.pinned {
+		border-color: var(--ring);
+	}
+}
+
+.divider {
+	display: block;
+	width: 100%;
+	height: 1px;
+	background-color: var(--l2-border);
+}
+
+.header {
+	display: flex;
+	align-items: center;
+	gap: var(--spacing-2);
+	padding: var(--spacing-3) var(--spacing-4);
+}
+
+// Matches the legend row's marker.
+.marker {
+	width: 10px;
+	height: 10px;
+	border-radius: var(--radius);
+	flex-shrink: 0;
+}
+
+.title {
+	flex: 1;
+	min-width: 0;
+	font-family: var(--font-mono);
+	font-size: var(--font-size-xs);
+	font-weight: 600;
+	color: var(--text-vanilla-100);
+	overflow: hidden;
+	text-overflow: ellipsis;
+	white-space: nowrap;
+}
+
+.status {
+	display: flex;
+	align-items: center;
+	gap: var(--spacing-1);
+	font-size: 11px;
+	color: var(--text-vanilla-400);
+	flex-shrink: 0;
+}
+
+.rows {
+	display: flex;
+	flex-direction: column;
+	gap: var(--spacing-1);
+	padding: var(--spacing-3) var(--spacing-4);
+}
+
+.row {
+	display: flex;
+	align-items: baseline;
+	justify-content: space-between;
+	gap: var(--spacing-4);
+	font-family: var(--font-mono);
+	font-size: var(--font-size-xs);
+	font-variant-numeric: tabular-nums;
+	color: var(--text-vanilla-100);
+}
+
+// The group values name the point; the channels are what it says.
+.rowMuted {
+	color: var(--text-vanilla-400);
+}
+
+.rowLabel {
+	flex: 1;
+	min-width: 0;
+	overflow: hidden;
+	text-overflow: ellipsis;
+	white-space: nowrap;
+}
+
+.rowValue {
+	flex: 0 0 auto;
+	max-width: 60%;
+	overflow: hidden;
+	text-overflow: ellipsis;
+	white-space: nowrap;
+}

frontend/src/lib/uPlotV2/components/Tooltip/ScatterTooltip.tsx

@@ -0,0 +1,111 @@
+import { useMemo } from 'react';
+import cx from 'classnames';
+import { Pin } from '@signozhq/icons';
+
+import { ScatterTooltipProps } from '../types';
+import { buildChannelRows, resolveHoveredPoint } from './scatterTooltipContent';
+
+import Styles from './ScatterTooltip.module.scss';
+
+/**
+ * One point, its channels, then the group values that name it. Purpose-built
+ * rather than composed from the shared `Tooltip`, whose list is one row per
+ * series at a shared x; a scatter point has no such neighbours.
+ */
+export default function ScatterTooltip({
+	uPlotInstance,
+	dataIndexes,
+	seriesIndex,
+	channels,
+	resolvePointLabels,
+	decimalPrecision,
+	isPinned,
+	dismiss,
+	renderTooltipFooter,
+}: ScatterTooltipProps): JSX.Element | null {
+	const point = useMemo(
+		() => resolveHoveredPoint(uPlotInstance, seriesIndex, dataIndexes),
+		[uPlotInstance, seriesIndex, dataIndexes],
+	);
+
+	const rows = useMemo(
+		() => (point ? buildChannelRows(point, channels, decimalPrecision) : []),
+		[point, channels, decimalPrecision],
+	);
+
+	const labels = useMemo(
+		() =>
+			point
+				? (resolvePointLabels?.(point.seriesIndex, point.dataIndex) ?? [])
+				: [],
+		[point, resolvePointLabels],
+	);
+
+	if (!point) {
+		return null;
+	}
+
+	return (
+		<div
+			className={cx(Styles.container, { [Styles.pinned]: isPinned })}
+			data-pinned={isPinned}
+			data-testid="scatter-tooltip"
+		>
+			<div className={Styles.header}>
+				<span className={Styles.marker} style={{ backgroundColor: point.color }} />
+				<span
+					className={Styles.title}
+					title={point.label}
+					data-testid="scatter-tooltip-title"
+				>
+					{point.label}
+				</span>
+				{isPinned && (
+					<span className={Styles.status} data-testid="scatter-tooltip-status">
+						<Pin size={12} />
+						<span>Pinned</span>
+					</span>
+				)}
+			</div>
+
+			<span className={Styles.divider} />
+
+			<div className={Styles.rows}>
+				{rows.map((row) => (
+					<div
+						key={row.label}
+						className={Styles.row}
+						data-testid="scatter-tooltip-row"
+					>
+						<span className={Styles.rowLabel}>{row.label}</span>
+						<span className={Styles.rowValue}>{row.value}</span>
+					</div>
+				))}
+			</div>
+
+			{labels.length > 0 && (
+				<>
+					<span className={Styles.divider} />
+					<div className={Styles.rows}>
+						{labels.map((label) => (
+							<div
+								key={label.key}
+								className={cx(Styles.row, Styles.rowMuted)}
+								data-testid="scatter-tooltip-label"
+							>
+								<span className={Styles.rowLabel} title={label.key}>
+									{label.key}
+								</span>
+								<span className={Styles.rowValue} title={label.value}>
+									{label.value}
+								</span>
+							</div>
+						))}
+					</div>
+				</>
+			)}
+
+			{renderTooltipFooter?.({ isPinned, dismiss })}
+		</div>
+	);
+}

frontend/src/lib/uPlotV2/components/Tooltip/__tests__/scatterTooltipContent.test.ts

@@ -0,0 +1,94 @@
+import type uPlot from 'uplot';
+
+import {
+	buildChannelRows,
+	resolveHoveredPoint,
+	ScatterHoveredPoint,
+} from '../scatterTooltipContent';
+
+jest.mock('components/Graph/yAxisConfig', () => ({
+	getToolTipValue: jest.fn((value: number | string, unit?: string) =>
+		`${value} ${unit ?? ''}`.trim(),
+	),
+}));
+
+const plot = {
+	data: [
+		null,
+		[
+			[10, 20],
+			[100, 200],
+			[5, null],
+		],
+		[[30], [300]],
+	],
+	series: [
+		{},
+		{ label: 'cart', stroke: '#ff0000' },
+		{ label: 'checkout', stroke: (): string => '#00ff00' },
+	],
+} as unknown as uPlot;
+
+describe('resolveHoveredPoint', () => {
+	it('reads the focused series at its own data index', () => {
+		expect(resolveHoveredPoint(plot, 1, [null, 1, null])).toStrictEqual({
+			seriesIndex: 1,
+			dataIndex: 1,
+			label: 'cart',
+			color: '#ff0000',
+			x: 20,
+			y: 200,
+			size: null,
+		});
+	});
+
+	it('carries the size column when present and resolves function strokes', () => {
+		expect(resolveHoveredPoint(plot, 1, [null, 0, null])?.size).toBe(5);
+		expect(resolveHoveredPoint(plot, 2, [null, null, 0])).toMatchObject({
+			label: 'checkout',
+			color: '#00ff00',
+			size: null,
+		});
+	});
+
+	it('is null without a focused series or an index for it', () => {
+		expect(resolveHoveredPoint(plot, null, [null, 0, null])).toBeNull();
+		expect(resolveHoveredPoint(plot, 0, [0, 0, null])).toBeNull();
+		expect(resolveHoveredPoint(plot, 1, [null, null, null])).toBeNull();
+	});
+});
+
+describe('buildChannelRows', () => {
+	const point: ScatterHoveredPoint = {
+		seriesIndex: 1,
+		dataIndex: 0,
+		label: 'cart',
+		color: '#f00',
+		x: 12,
+		y: 340,
+		size: 7,
+	};
+
+	it('formats x and y with their own units', () => {
+		const rows = buildChannelRows(point, {
+			x: { label: 'Throughput', unit: 'reqps' },
+			y: { label: 'p99', unit: 'ms' },
+		});
+
+		expect(rows).toStrictEqual([
+			{ label: 'Throughput', value: '12 reqps' },
+			{ label: 'p99', value: '340 ms' },
+		]);
+	});
+
+	it('adds the size row only when the channel is mapped and the point has one', () => {
+		const channels = {
+			x: { label: 'x' },
+			y: { label: 'y' },
+			size: { label: 'Errors' },
+		};
+
+		expect(buildChannelRows(point, channels)).toHaveLength(3);
+		expect(buildChannelRows({ ...point, size: null }, channels)).toHaveLength(2);
+	});
+});

frontend/src/lib/uPlotV2/components/Tooltip/scatterTooltipContent.ts

@@ -0,0 +1,90 @@
+import { PrecisionOption } from 'components/Graph/types';
+import { getToolTipValue } from 'components/Graph/yAxisConfig';
+import type uPlot from 'uplot';
+
+import type {
+	ScatterChannel,
+	ScatterChannels,
+	ScatterSeriesData,
+} from '../../plugins/ScatterPlugin/types';
+import { resolveSeriesColor } from './utils';
+
+export interface ScatterHoveredPoint {
+	seriesIndex: number;
+	dataIndex: number;
+	label: string;
+	color: string;
+	x: number;
+	y: number;
+	size: number | null;
+}
+
+export interface ScatterTooltipRow {
+	label: string;
+	value: string;
+}
+
+/** The point the cursor resolved to: the focused series' own index into its columns. */
+export function resolveHoveredPoint(
+	u: uPlot,
+	seriesIndex: number | null,
+	dataIndexes: Array<number | null>,
+): ScatterHoveredPoint | null {
+	if (seriesIndex == null || seriesIndex < 1) {
+		return null;
+	}
+	const dataIndex = dataIndexes[seriesIndex];
+	const series = u.series[seriesIndex];
+	const columns = u.data[seriesIndex] as unknown as
+		| ScatterSeriesData
+		| undefined;
+	if (dataIndex == null || !series || !columns) {
+		return null;
+	}
+	const x = columns[0][dataIndex];
+	const y = columns[1][dataIndex];
+	if (x == null || y == null) {
+		return null;
+	}
+	return {
+		seriesIndex,
+		dataIndex,
+		label: String(series.label ?? ''),
+		color: resolveSeriesColor(series.stroke, u, seriesIndex),
+		x,
+		y,
+		size: columns[2]?.[dataIndex] ?? null,
+	};
+}
+
+function formatChannel(
+	value: number,
+	channel: ScatterChannel,
+	decimalPrecision?: PrecisionOption,
+): string {
+	return getToolTipValue(value, channel.unit, decimalPrecision);
+}
+
+export function buildChannelRows(
+	point: ScatterHoveredPoint,
+	channels: ScatterChannels,
+	decimalPrecision?: PrecisionOption,
+): ScatterTooltipRow[] {
+	const rows: ScatterTooltipRow[] = [
+		{
+			label: channels.x.label,
+			value: formatChannel(point.x, channels.x, decimalPrecision),
+		},
+		{
+			label: channels.y.label,
+			value: formatChannel(point.y, channels.y, decimalPrecision),
+		},
+	];
+	if (channels.size && point.size != null) {
+		rows.push({
+			label: channels.size.label,
+			value: formatChannel(point.size, channels.size, decimalPrecision),
+		});
+	}
+	return rows;
+}

frontend/src/lib/uPlotV2/components/types.ts

@@ -5,6 +5,10 @@ import uPlot from 'uplot';
 
 import { UPlotConfigBuilder } from '../config/UPlotConfigBuilder';
 import { LegendItem } from '../config/types';
+import type {
+	ScatterChannels,
+	ScatterPointLabel,
+} from '../plugins/ScatterPlugin/types';
 import { SyncTooltipFilterMode } from '../plugins/TooltipPlugin/types';
 
 /**
@@ -103,6 +107,17 @@ export interface BarTooltipProps extends BaseTooltipProps, TooltipRenderArgs {
 export interface HistogramTooltipProps
 	extends BaseTooltipProps, TooltipRenderArgs {}
 
+/** Not part of `TooltipProps`: it describes one point's channels, not a series list. */
+export interface ScatterTooltipProps
+	extends BaseTooltipProps, TooltipRenderArgs {
+	channels: ScatterChannels;
+	/** The group values behind a point, e.g. `service.name` → `cart`. */
+	resolvePointLabels?: (
+		seriesIndex: number,
+		dataIndex: number,
+	) => ScatterPointLabel[];
+}
+
 export type TooltipProps =
 	| TimeSeriesTooltipProps
 	| BarTooltipProps

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

@@ -4,6 +4,7 @@ import uPlot, { Axis } from 'uplot';
 import { uPlotXAxisValuesFormat } from '../../uPlotLib/utils/constants';
 import getGridColor from '../../uPlotLib/utils/getGridColor';
 import { buildYAxisSizeCalculator } from '../utils/axis';
+import { keepDecadeSplits } from '../utils/logGridSplits';
 import { AxisProps, ConfigBuilder } from './types';
 
 /**
@@ -20,8 +21,9 @@ export class UPlotAxisBuilder extends ConfigBuilder<AxisProps, Axis> {
 		const { grid, isDarkMode, isLogScale } = this.props;
 
 		const defaultStroke = getGridColor(isDarkMode ?? false);
-		const defaultWidth = isLogScale ? 0.1 : 0.2;
+		const defaultWidth = 0.2;
 		const defaultShow = true;
+		const filter = isLogScale ? { filter: keepDecadeSplits } : {};
 
 		// Merge partial or full grid config with defaults
 		if (grid) {
@@ -29,6 +31,7 @@ export class UPlotAxisBuilder extends ConfigBuilder<AxisProps, Axis> {
 				stroke: grid.stroke ?? defaultStroke,
 				width: grid.width ?? defaultWidth,
 				show: grid.show ?? defaultShow,
+				...filter,
 			};
 		}
 
@@ -36,9 +39,20 @@ export class UPlotAxisBuilder extends ConfigBuilder<AxisProps, Axis> {
 			stroke: defaultStroke,
 			width: defaultWidth,
 			show: defaultShow,
+			...filter,
 		};
 	}
 
+	/** The axis line reads as the outermost grid line, so it takes the grid's style. */
+	private buildBorderConfig(
+		grid: uPlot.Axis.Grid | undefined,
+	): uPlot.Axis.Border | undefined {
+		if (this.props.showBorder === false || !grid) {
+			return undefined;
+		}
+		return { show: true, stroke: grid.stroke, width: grid.width };
+	}
+
 	/**
 	 * Build ticks configuration
 	 */
@@ -58,32 +72,49 @@ export class UPlotAxisBuilder extends ConfigBuilder<AxisProps, Axis> {
 	}
 
 	/**
-	 * Build values formatter for X-axis (time)
+	 * Build values formatter for X-axis: time, or a value axis when a unit or
+	 * precision is given (scatter). Neither leaves uPlot's numeric default.
 	 */
 	private buildXAxisValuesFormatter(): uPlot.Axis.Values | undefined {
-		const { isTimeAxis } = this.props;
+		const { isTimeAxis, yAxisUnit, decimalPrecision } = this.props;
 
 		if (isTimeAxis) {
 			return uPlotXAxisValuesFormat as uPlot.Axis.Values;
 		}
 
+		if (yAxisUnit !== undefined || decimalPrecision !== undefined) {
+			return this.buildValueAxisFormatter();
+		}
+
 		return undefined;
 	}
 
 	/**
-	 * Build values formatter for Y-axis (values with units)
+	 * Build values formatter for a value axis (values with units). A split outside
+	 * the scale's range gets no label: uPlot's arcsinh splits always include
+	 * ±threshold, and it would draw that label past the plot's edge.
 	 */
-	private buildYAxisValuesFormatter(): uPlot.Axis.Values {
-		const { yAxisUnit, decimalPrecision } = this.props;
+	private buildValueAxisFormatter(): uPlot.Axis.Values {
+		const { yAxisUnit, decimalPrecision, scaleKey } = this.props;
 
-		return (_, t): string[] =>
-			t.map((v) => {
-				if (v === null || v === undefined || Number.isNaN(v)) {
+		return (u, t): string[] => {
+			const scale = u?.scales?.[scaleKey];
+			const min = scale?.min ?? -Infinity;
+			const max = scale?.max ?? Infinity;
+			return t.map((v) => {
+				if (
+					v === null ||
+					v === undefined ||
+					Number.isNaN(v) ||
+					v < min ||
+					v > max
+				) {
 					return '';
 				}
 				const value = getToolTipValue(v.toString(), yAxisUnit, decimalPrecision);
 				return `${value}`;
 			});
+		};
 	}
 
 	/**
@@ -101,7 +132,7 @@ export class UPlotAxisBuilder extends ConfigBuilder<AxisProps, Axis> {
 		return scaleKey === 'x'
 			? this.buildXAxisValuesFormatter()
 			: scaleKey === 'y'
-				? this.buildYAxisValuesFormatter()
+				? this.buildValueAxisFormatter()
 				: undefined;
 	}
 
@@ -148,10 +179,13 @@ export class UPlotAxisBuilder extends ConfigBuilder<AxisProps, Axis> {
 			show = true,
 			side = 2, // bottom by default
 			space,
+			splits,
+			filter,
 			gap = 5, // default gap is 5
 		} = this.props;
 
 		const grid = this.buildGridConfig();
+		const border = this.buildBorderConfig(grid);
 		const ticks = this.buildTicksConfig();
 		const values = this.buildValuesFormatter();
 		const size = this.buildSizeCalculator();
@@ -176,6 +210,9 @@ export class UPlotAxisBuilder extends ConfigBuilder<AxisProps, Axis> {
 		if (ticks) {
 			axisConfig.ticks = ticks;
 		}
+		if (border) {
+			axisConfig.border = border;
+		}
 		if (values) {
 			axisConfig.values = values;
 		}
@@ -185,6 +222,12 @@ export class UPlotAxisBuilder extends ConfigBuilder<AxisProps, Axis> {
 		if (space !== undefined) {
 			axisConfig.space = space;
 		}
+		if (splits) {
+			axisConfig.splits = splits;
+		}
+		if (filter) {
+			axisConfig.filter = filter;
+		}
 		if (size) {
 			axisConfig.size = size;
 		}

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

@@ -19,6 +19,7 @@ import {
 	ConfigBuilder,
 	ConfigBuilderProps,
 	LegendItem,
+	PlotMode,
 	SelectionPreferencesSource,
 	StackMode,
 } from './types';
@@ -65,6 +66,8 @@ export class UPlotConfigBuilder extends ConfigBuilder<
 
 	private stackMode: StackMode = StackMode.None;
 
+	private mode: PlotMode = PlotMode.Aligned;
+
 	private cursor: Cursor | undefined;
 
 	private hooks: Hooks.Arrays = {};
@@ -160,6 +163,15 @@ export class UPlotConfigBuilder extends ConfigBuilder<
 		return this.stackMode;
 	}
 
+	/** Faceted series carry their own x column each; see `SeriesProps.facets`. */
+	setMode(mode: PlotMode): void {
+		this.mode = mode;
+	}
+
+	getMode(): PlotMode {
+		return this.mode;
+	}
+
 	/**
 	 * Add or merge a scale configuration
 	 */
@@ -512,6 +524,10 @@ export class UPlotConfigBuilder extends ConfigBuilder<
 			{} as Record<string, uPlot.Scale>,
 		);
 
+		if (this.mode === PlotMode.Faceted) {
+			config.mode = this.mode as number as uPlot.Mode;
+		}
+
 		config.hooks = this.hooks;
 		config.select = this.select;
 

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

@@ -93,6 +93,7 @@ export class UPlotScaleBuilder extends ConfigBuilder<
 			time,
 			distr,
 			logBase,
+			asinhThreshold: this.props.asinhThreshold,
 		});
 
 		const { rangeConfig, hardMinOnly, hardMaxOnly, hasFixedRange } =

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

@@ -87,6 +87,8 @@ export class UPlotSeriesBuilder extends ConfigBuilder<
 			lineConfig.fill = finalFillColor;
 		} else if (this.props.drawStyle === DrawStyle.Histogram) {
 			lineConfig.fill = `${finalFillColor}40`;
+		} else if (this.props.drawStyle === DrawStyle.Scatter) {
+			lineConfig.fill = `${finalFillColor}${toAlphaHex(resolveFillOpacity(fillOpacity))}`;
 		} else if (fillMode && fillMode !== FillMode.None) {
 			const resolvedOpacity = resolveFillOpacity(fillOpacity);
 			if (fillMode === FillMode.Solid) {
@@ -122,7 +124,8 @@ export class UPlotSeriesBuilder extends ConfigBuilder<
 			return { paths: pathBuilder };
 		}
 
-		if (drawStyle === DrawStyle.Points) {
+		// Scatter without a `pathBuilder` has nothing to draw its discs with.
+		if (drawStyle === DrawStyle.Points || drawStyle === DrawStyle.Scatter) {
 			return { paths: (): null => null };
 		}
 
@@ -194,6 +197,10 @@ export class UPlotSeriesBuilder extends ConfigBuilder<
 		if (drawStyle === DrawStyle.Points) {
 			return true;
 		}
+		// The discs are the series path; uPlot's own points would double-draw them.
+		if (drawStyle === DrawStyle.Scatter) {
+			return false;
+		}
 		return !!showPoints;
 	}
 
@@ -218,7 +225,7 @@ export class UPlotSeriesBuilder extends ConfigBuilder<
 	}
 
 	getConfig(): ExtendedSeries {
-		const { scaleKey, label, spanGaps, show = true, metric } = this.props;
+		const { scaleKey, label, spanGaps, show = true, metric, facets } = this.props;
 
 		const resolvedLineColor = this.getLineColor();
 
@@ -246,6 +253,7 @@ export class UPlotSeriesBuilder extends ConfigBuilder<
 			...pathConfig,
 			points: Object.keys(pointsConfig).length > 0 ? pointsConfig : undefined,
 			metric,
+			...(facets && { facets }),
 		};
 	}
 }

frontend/src/lib/uPlotV2/config/__tests__/UPlotAxisBuilder.test.ts

@@ -3,6 +3,7 @@ import { uPlotXAxisValuesFormat } from 'lib/uPlotLib/utils/constants';
 import type uPlot from 'uplot';
 
 import type { AxisProps } from '../types';
+import { keepDecadeSplits } from '../../utils/logGridSplits';
 import { UPlotAxisBuilder } from '../UPlotAxisBuilder';
 
 jest.mock('components/Graph/yAxisConfig', () => ({
@@ -117,9 +118,47 @@ describe('UPlotAxisBuilder', () => {
 			width: 1,
 			// show falls back to default when not provided
 			show: true,
+			filter: keepDecadeSplits,
 		});
 	});
 
+	it('draws the axis line by default, styled like the grid', () => {
+		const config = new UPlotAxisBuilder(
+			createAxisProps({ isDarkMode: true, grid: { width: 0.5 } }),
+		).getConfig();
+
+		expect(config.border).toStrictEqual({
+			show: true,
+			stroke: config.grid?.stroke,
+			width: 0.5,
+		});
+	});
+
+	it('leaves the axis line off when showBorder is false', () => {
+		expect(
+			new UPlotAxisBuilder(createAxisProps({ showBorder: false })).getConfig(),
+		).not.toHaveProperty('border');
+	});
+
+	it('passes explicit splits and a label filter through to uPlot', () => {
+		const splits = jest.fn();
+		const filter = jest.fn();
+		const config = new UPlotAxisBuilder(
+			createAxisProps({ splits, filter }),
+		).getConfig();
+
+		expect(config.splits).toBe(splits);
+		expect(config.filter).toBe(filter);
+	});
+
+	it('draws log grid lines at powers of ten only, and leaves a linear grid unfiltered', () => {
+		const log = new UPlotAxisBuilder(createAxisProps({ isLogScale: true }));
+		const linear = new UPlotAxisBuilder(createAxisProps({ isLogScale: false }));
+
+		expect(log.getConfig().grid?.filter).toBe(keepDecadeSplits);
+		expect(linear.getConfig().grid).not.toHaveProperty('filter');
+	});
+
 	it('uses provided ticks config when present and falls back to defaults otherwise', () => {
 		const customTicks = { width: 1, show: false };
 		const withTicks = new UPlotAxisBuilder(
@@ -376,3 +415,51 @@ describe('UPlotAxisBuilder', () => {
 		expect(config.values).toBeDefined();
 	});
 });
+
+describe('UPlotAxisBuilder value x axis', () => {
+	it('formats a non-time x axis with its unit', () => {
+		(getToolTipValue as jest.Mock).mockReturnValue('1.2K req/s');
+		const config = new UPlotAxisBuilder(
+			createAxisProps({ scaleKey: 'x', isTimeAxis: false, yAxisUnit: 'reqps' }),
+		).getConfig();
+
+		const values = (config.values as uPlot.Axis.DynamicValues)(
+			{} as uPlot,
+			[1200],
+			0,
+			0,
+			0,
+		);
+
+		expect(values).toStrictEqual(['1.2K req/s']);
+		expect(getToolTipValue).toHaveBeenCalledWith('1200', 'reqps', undefined);
+	});
+
+	it('leaves a non-time x axis to uPlot when nothing says how to format it', () => {
+		const config = new UPlotAxisBuilder(
+			createAxisProps({ scaleKey: 'x', isTimeAxis: false }),
+		).getConfig();
+
+		expect(config.values).toBeUndefined();
+	});
+});
+
+describe('UPlotAxisBuilder out-of-range splits', () => {
+	it('leaves a split the scale cannot place unlabelled', () => {
+		(getToolTipValue as jest.Mock).mockImplementation((v: string) => `${v} ms`);
+		const config = new UPlotAxisBuilder(
+			createAxisProps({ scaleKey: 'y', yAxisUnit: 'ms' }),
+		).getConfig();
+		const u = { scales: { y: { min: 0, max: 1000 } } } as unknown as uPlot;
+
+		const values = (config.values as uPlot.Axis.DynamicValues)(
+			u,
+			[-10, 0, 500, 5000],
+			0,
+			0,
+			0,
+		);
+
+		expect(values).toStrictEqual(['', '0 ms', '500 ms', '']);
+	});
+});

frontend/src/lib/uPlotV2/config/__tests__/UPlotConfigBuilder.test.ts

@@ -5,7 +5,12 @@ import {
 	STEP_INTERVAL_MULTIPLIER,
 } from '../../constants';
 import type { SeriesProps } from '../types';
-import { DrawStyle, SelectionPreferencesSource, StackMode } from '../types';
+import {
+	DrawStyle,
+	PlotMode,
+	SelectionPreferencesSource,
+	StackMode,
+} from '../types';
 import { UPlotConfigBuilder } from '../UPlotConfigBuilder';
 
 // Mock only the real boundary that hits localStorage
@@ -651,3 +656,15 @@ describe('UPlotConfigBuilder stacking', () => {
 		expect(builder.getConfig().bands).toStrictEqual([{ series: [1, 3] }]);
 	});
 });
+
+describe('UPlotConfigBuilder plot mode', () => {
+	it('leaves mode unset for aligned data and emits 2 when faceted', () => {
+		const aligned = new UPlotConfigBuilder({ id: 'aligned' });
+		expect(aligned.getConfig().mode).toBeUndefined();
+
+		const faceted = new UPlotConfigBuilder({ id: 'faceted' });
+		faceted.setMode(PlotMode.Faceted);
+		expect(faceted.getMode()).toBe(PlotMode.Faceted);
+		expect(faceted.getConfig().mode).toBe(2);
+	});
+});

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

@@ -399,3 +399,39 @@ describe('UPlotSeriesBuilder', () => {
 		expect(builder.getConfig().fill).toBeUndefined();
 	});
 });
+
+describe('UPlotSeriesBuilder scatter', () => {
+	it('draws through the given path builder and hides uPlot points', () => {
+		const pathBuilder = jest.fn();
+		const config = new UPlotSeriesBuilder(
+			createBaseProps({
+				drawStyle: DrawStyle.Scatter,
+				pathBuilder,
+				facets: [{ scale: 'x' }, { scale: 'y' }],
+				lineColor: '#ff0000',
+				fillOpacity: 0.5,
+				lineWidth: 1,
+				pointSize: 8,
+			}),
+		).getConfig();
+
+		expect(config.paths).toBe(pathBuilder);
+		expect(config.facets).toStrictEqual([{ scale: 'x' }, { scale: 'y' }]);
+		expect(config.points?.show).toBe(false);
+		expect(config.points?.size).toBe(8);
+		expect(config.stroke).toBe('#ff0000');
+		expect(config.width).toBe(1);
+		expect(config.fill).toBe('#ff000080');
+	});
+
+	it('draws nothing without a path builder', () => {
+		const config = new UPlotSeriesBuilder(
+			createBaseProps({ drawStyle: DrawStyle.Scatter }),
+		).getConfig();
+
+		expect(
+			(config.paths as uPlot.Series.PathBuilder)({} as uPlot, 1, 0, 0),
+		).toBeNull();
+		expect(config.facets).toBeUndefined();
+	});
+});

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

@@ -78,6 +78,12 @@ export interface AxisProps {
 	};
 	/** Explicit tick formatter, replacing the scale's default (time / unit-formatted). */
 	values?: uPlot.Axis.Values;
+	/** Explicit tick positions, replacing uPlot's per-distribution default. */
+	splits?: uPlot.Axis.Splits;
+	/** Which splits get a label, replacing uPlot's per-distribution default. */
+	filter?: uPlot.Axis.Filter;
+	/** Draw the axis line along the plot edge, styled like the grid. Default true. */
+	showBorder?: boolean;
 	/** Pixels between the ticks and their labels; also feeds the y axis width calculation. */
 	gap?: number;
 	/** Explicit axis thickness. Left unset, the y axis sizes itself to its widest label. */
@@ -86,9 +92,10 @@ export interface AxisProps {
 	space?: number;
 	/** Picks the dark or light default for stroke and grid color. */
 	isDarkMode?: boolean;
-	/** Axis is on a log scale — thins the grid lines to keep dense decades readable. */
+	/** Axis is on a log scale — grid lines fall on powers of ten only. */
 	isLogScale?: boolean;
-	/** Unit the y axis ticks are formatted in (`spec.formatting.unit`). */
+	/** Unit the value ticks are formatted in (`spec.formatting.unit`). Named for the
+	 *  y axis, the only value axis until scatter; a non-time x axis reads it too. */
 	yAxisUnit?: string;
 	/**
 	 * X axis carries timestamps, so its ticks format as dates/times. Declared by the caller
@@ -107,6 +114,15 @@ export interface AxisProps {
 export enum DistributionType {
 	Linear = 'linear',
 	Logarithmic = 'logarithmic',
+	/** arcsinh: linear within ±`asinhThreshold`, logarithmic beyond. Takes zero and
+	 *  negatives, which a plain log cannot place. */
+	SymmetricLog = 'symlog',
+}
+
+/** uPlot's data layout: one shared x per chart, or per-series x/y columns. */
+export enum PlotMode {
+	Aligned = 1,
+	Faceted = 2,
 }
 
 export interface ScaleProps {
@@ -123,6 +139,8 @@ export interface ScaleProps {
 	auto?: boolean;
 	logBase?: uPlot.Scale.LogBase;
 	distribution?: DistributionType;
+	/** Half-width of a `SymmetricLog` scale's linear band around zero. Default 1. */
+	asinhThreshold?: number;
 }
 
 export enum DisconnectedValuesMode {
@@ -144,6 +162,8 @@ export enum DrawStyle {
 	Points = 'points',
 	Bar = 'bar',
 	Histogram = 'histogram',
+	/** Faceted (mode 2) discs at per-series x/y, drawn by the caller's `pathBuilder`. */
+	Scatter = 'scatter',
 }
 
 export enum LineInterpolation {
@@ -227,6 +247,8 @@ export interface SeriesProps extends LineConfig, PointsConfig, BarConfig {
 	isDarkMode?: boolean;
 	stepInterval?: number;
 	metric?: { [key: string]: string };
+	/** Mode 2 only: the scales the series' own x and y columns are read against. */
+	facets?: Series.Facet[];
 }
 
 export interface LegendItem {

frontend/src/lib/uPlotV2/plugins/ScatterPlugin/__tests__/geometry.test.ts

@@ -0,0 +1,114 @@
+import type uPlot from 'uplot';
+
+import { Quadtree } from '../../../utils/quadtree';
+import {
+	resolveHit,
+	resolvePointDiameter,
+	resolveSizeDomain,
+} from '../geometry';
+import { ScatterHit, ScatterPointSize } from '../types';
+
+const POINT_SIZE: ScatterPointSize = { fixed: 6, min: 4, max: 20 };
+
+const asData = (columns: unknown[]): uPlot.AlignedData =>
+	columns as unknown as uPlot.AlignedData;
+
+describe('resolveSizeDomain', () => {
+	it('spans the size columns of every series, skipping nulls', () => {
+		const data = asData([
+			null,
+			[
+				[1, 2],
+				[1, 2],
+				[10, null],
+			],
+			[[3], [3], [40]],
+		]);
+
+		expect(resolveSizeDomain(data)).toStrictEqual({ min: 10, max: 40 });
+	});
+
+	it('is null when no series carries sizes', () => {
+		expect(resolveSizeDomain(asData([null, [[1], [1]]]))).toBeNull();
+		expect(resolveSizeDomain(asData([null, [[1], [1], [null]]]))).toBeNull();
+	});
+});
+
+describe('resolvePointDiameter', () => {
+	it('uses the fixed diameter without a size or a domain', () => {
+		expect(resolvePointDiameter(null, { min: 0, max: 10 }, POINT_SIZE)).toBe(6);
+		expect(resolvePointDiameter(5, null, POINT_SIZE)).toBe(6);
+	});
+
+	it('maps the domain ends to min and max', () => {
+		const domain = { min: 0, max: 100 };
+		expect(resolvePointDiameter(0, domain, POINT_SIZE)).toBe(4);
+		expect(resolvePointDiameter(100, domain, POINT_SIZE)).toBe(20);
+	});
+
+	it('scales by area, not diameter', () => {
+		const midArea = (4 ** 2 + 20 ** 2) / 2;
+		expect(
+			resolvePointDiameter(50, { min: 0, max: 100 }, POINT_SIZE),
+		).toBeCloseTo(Math.sqrt(midArea));
+	});
+
+	it('clamps values outside the domain', () => {
+		const domain = { min: 10, max: 20 };
+		expect(resolvePointDiameter(-5, domain, POINT_SIZE)).toBe(4);
+		expect(resolvePointDiameter(500, domain, POINT_SIZE)).toBe(20);
+	});
+
+	it('uses the midpoint when every size is the same', () => {
+		expect(resolvePointDiameter(7, { min: 7, max: 7 }, POINT_SIZE)).toBe(12);
+	});
+});
+
+describe('resolveHit', () => {
+	const hit = (
+		seriesIndex: number,
+		dataIndex: number,
+		x: number,
+		y: number,
+		d: number,
+	): ScatterHit => ({ seriesIndex, dataIndex, x, y, w: d, h: d });
+
+	it('returns the disc under the cursor', () => {
+		const tree = new Quadtree<ScatterHit>(0, 0, 100, 100);
+		tree.add(hit(1, 0, 10, 10, 6));
+		tree.add(hit(2, 3, 50, 50, 6));
+
+		expect(resolveHit(tree, 13, 13, 0)).toMatchObject({
+			seriesIndex: 1,
+			dataIndex: 0,
+		});
+		expect(resolveHit(tree, 52, 52, 0)).toMatchObject({
+			seriesIndex: 2,
+			dataIndex: 3,
+		});
+	});
+
+	it('is null when the cursor is off every disc', () => {
+		const tree = new Quadtree<ScatterHit>(0, 0, 100, 100);
+		tree.add(hit(1, 0, 10, 10, 6));
+
+		expect(resolveHit(tree, 30, 30, 0)).toBeNull();
+	});
+
+	it('tolerance widens each disc', () => {
+		const tree = new Quadtree<ScatterHit>(0, 0, 100, 100);
+		tree.add(hit(1, 0, 10, 10, 6));
+
+		expect(resolveHit(tree, 18, 13, 0)).toBeNull();
+		expect(resolveHit(tree, 18, 13, 3)).not.toBeNull();
+	});
+
+	it('prefers the disc whose centre is nearest when they overlap', () => {
+		const tree = new Quadtree<ScatterHit>(0, 0, 100, 100);
+		tree.add(hit(1, 0, 10, 10, 10));
+		tree.add(hit(1, 1, 14, 10, 10));
+
+		expect(resolveHit(tree, 13, 15, 0)?.dataIndex).toBe(0);
+		expect(resolveHit(tree, 21, 15, 0)?.dataIndex).toBe(1);
+	});
+});

frontend/src/lib/uPlotV2/plugins/ScatterPlugin/__tests__/scatterPlugin.test.ts

@@ -0,0 +1,288 @@
+import uPlot from 'uplot';
+
+import { PlotMode } from '../../../config/types';
+import { UPlotConfigBuilder } from '../../../config/UPlotConfigBuilder';
+import {
+	applyScatterPlugin,
+	createScatterPlugin,
+	SCATTER_FACETS,
+} from '../scatterPlugin';
+
+jest.mock('lib/visualization/panels/utils/legendVisibilityUtils', () => ({
+	getStoredSeriesVisibility: jest.fn(),
+}));
+
+/** jsdom has no Path2D; the builder only needs something that takes the calls. */
+class FakePath2D {
+	moveTo = jest.fn();
+	arc = jest.fn();
+}
+
+type OrientCallback = Parameters<typeof uPlot.orient>[2];
+
+interface FakePlotArgs {
+	series: Array<{ xs: number[]; ys: number[]; sizes?: Array<number | null> }>;
+	cursor?: { left: number; top: number };
+	scaleX?: { min: number; max: number };
+	scaleY?: { min: number; max: number };
+}
+
+/**
+ * A 100×100 plot at the canvas origin with identity scales: value 10 draws at
+ * pixel 10 on x, and at 100 − 10 on y (uPlot's y grows downward).
+ */
+function createFakePlot({
+	series,
+	cursor = { left: -1, top: -1 },
+	scaleX = { min: 0, max: 100 },
+	scaleY = { min: 0, max: 100 },
+}: FakePlotArgs): uPlot {
+	const data = [
+		null,
+		...series.map((entry) =>
+			entry.sizes ? [entry.xs, entry.ys, entry.sizes] : [entry.xs, entry.ys],
+		),
+	];
+	return {
+		data,
+		series: [{}, ...series.map((_, index) => ({ label: `s${index + 1}` }))],
+		bbox: { left: 0, top: 0, width: 100, height: 100 },
+		cursor,
+		scales: { x: scaleX, y: scaleY },
+	} as unknown as uPlot;
+}
+
+/** Stands in for `uPlot.orient`: identity x, flipped y, an `arc` that records. */
+function orientWithIdentityScales(
+	u: uPlot,
+	seriesIdx: number,
+	cb: OrientCallback,
+): void {
+	const columns = (u.data as unknown as Array<number[][] | null>)[seriesIdx];
+	if (!columns) {
+		return;
+	}
+	const scaleX = (u.scales as unknown as Record<string, uPlot.Scale>).x;
+	const scaleY = (u.scales as unknown as Record<string, uPlot.Scale>).y;
+	const valToPosX = (value: number): number => value;
+	const valToPosY = (value: number): number => 100 - value;
+	// Real uPlot's `arc` helper forwards to the path; the test counts those calls.
+	const arc = (path: FakePath2D, ...args: number[]): void => {
+		path.arc(...args);
+	};
+	cb(
+		u.series[seriesIdx],
+		columns[0],
+		columns[1],
+		scaleX,
+		scaleY,
+		valToPosX as unknown as uPlot.ValToPos,
+		valToPosY as unknown as uPlot.ValToPos,
+		0,
+		0,
+		100,
+		100,
+		jest.fn() as never,
+		jest.fn() as never,
+		jest.fn() as never,
+		arc as never,
+		jest.fn() as never,
+	);
+}
+
+describe('createScatterPlugin', () => {
+	beforeAll(() => {
+		(globalThis as { Path2D?: unknown }).Path2D = FakePath2D;
+	});
+
+	beforeEach(() => {
+		(uPlot.orient as jest.Mock).mockImplementation(orientWithIdentityScales);
+	});
+
+	afterEach(() => {
+		(uPlot.orient as jest.Mock).mockReset();
+	});
+
+	function drawAll(
+		u: uPlot,
+		plugin: ReturnType<typeof createScatterPlugin>,
+	): void {
+		plugin.hooks.drawClear(u);
+		for (let seriesIdx = 1; seriesIdx < u.series.length; seriesIdx++) {
+			const columns = (u.data as unknown as number[][][])[seriesIdx];
+			plugin.pathBuilder(u, seriesIdx, 0, columns[0].length - 1);
+		}
+	}
+
+	/** Runs the cursor scan the way uPlot does: every data series, in order. */
+	function scan(
+		u: uPlot,
+		plugin: ReturnType<typeof createScatterPlugin>,
+	): Array<number | null> {
+		const dataIdx = plugin.cursor.dataIdx as NonNullable<uPlot.Cursor['dataIdx']>;
+		const indexes: Array<number | null> = [null];
+		for (let seriesIdx = 1; seriesIdx < u.series.length; seriesIdx++) {
+			indexes.push(dataIdx(u, seriesIdx, 0, 0));
+		}
+		return indexes;
+	}
+
+	it('returns one path that strokes and fills the same discs', () => {
+		const plugin = createScatterPlugin();
+		const u = createFakePlot({ series: [{ xs: [10, 20], ys: [10, 20] }] });
+		plugin.hooks.drawClear(u);
+
+		const paths = plugin.pathBuilder(u, 1, 0, 1) as uPlot.Series.Paths;
+
+		expect(paths.stroke).toBeInstanceOf(FakePath2D);
+		expect(paths.fill).toBe(paths.stroke);
+		expect((paths.fill as unknown as FakePath2D).arc).toHaveBeenCalledTimes(2);
+	});
+
+	it('resolves the hovered point to its own series and index', () => {
+		const plugin = createScatterPlugin({
+			pointSize: { fixed: 6, min: 4, max: 20 },
+		});
+		const u = createFakePlot({
+			series: [
+				{ xs: [10, 50], ys: [10, 50] },
+				{ xs: [80], ys: [80] },
+			],
+			// Over the second series' only point: x 80, y drawn at 100 − 80.
+			cursor: { left: 80, top: 20 },
+		});
+		drawAll(u, plugin);
+
+		expect(scan(u, plugin)).toStrictEqual([null, null, 0]);
+		expect(plugin.getHit()).toMatchObject({ seriesIndex: 2, dataIndex: 0 });
+	});
+
+	it('returns null for every series when the cursor is off the plot or off any disc', () => {
+		const plugin = createScatterPlugin();
+		const u = createFakePlot({
+			series: [{ xs: [10], ys: [10] }],
+			cursor: { left: -1, top: -1 },
+		});
+		drawAll(u, plugin);
+
+		expect(scan(u, plugin)).toStrictEqual([null, null]);
+
+		(u.cursor as { left: number; top: number }).left = 50;
+		(u.cursor as { left: number; top: number }).top = 50;
+		expect(scan(u, plugin)).toStrictEqual([null, null]);
+	});
+
+	it('skips points outside the visible scale range', () => {
+		const plugin = createScatterPlugin();
+		const u = createFakePlot({
+			series: [{ xs: [10, 500], ys: [10, 10] }],
+			cursor: { left: 10, top: 90 },
+		});
+		drawAll(u, plugin);
+
+		const paths = plugin.pathBuilder(u, 1, 0, 1) as uPlot.Series.Paths;
+		expect((paths.fill as unknown as FakePath2D).arc).toHaveBeenCalledTimes(1);
+		expect(scan(u, plugin)).toStrictEqual([null, 0]);
+	});
+
+	it('rings the hit disc, in CSS pixels, with a gap around it', () => {
+		const plugin = createScatterPlugin({
+			pointSize: { fixed: 8, min: 4, max: 20 },
+		});
+		const u = createFakePlot({
+			series: [{ xs: [10], ys: [10] }],
+			cursor: { left: 10, top: 90 },
+		});
+		drawAll(u, plugin);
+		scan(u, plugin);
+
+		const bbox = plugin.cursor.points?.bbox;
+		// The 8px disc spans 6..14; the ring sits 3px out and is 2px wide.
+		expect(bbox?.(u, 1)).toStrictEqual({
+			left: 1,
+			top: 81,
+			width: 18,
+			height: 18,
+		});
+		expect(bbox?.(u, 2)).toMatchObject({ width: 0, height: 0 });
+	});
+
+	it('snaps the ring to whole pixels without moving its centre', () => {
+		const plugin = createScatterPlugin({
+			pointSize: { fixed: 7, min: 4, max: 20 },
+		});
+		const u = createFakePlot({
+			series: [{ xs: [10], ys: [10] }],
+			cursor: { left: 10, top: 90 },
+		});
+		drawAll(u, plugin);
+		scan(u, plugin);
+
+		// The 7px disc starts at 6.5, so the ring's edge would land on 1.5.
+		const ring = plugin.cursor.points?.bbox?.(u, 1);
+		expect(ring).toMatchObject({ left: 1, width: 18 });
+		expect((ring?.left ?? 0) + (ring?.width ?? 0) / 2).toBe(10);
+	});
+
+	it('draws the hover marker as an outline in the series colour', () => {
+		const plugin = createScatterPlugin();
+		const u = {
+			series: [{}, { stroke: (): string => '#E5484D' }, { stroke: '#30A46C' }],
+		} as unknown as uPlot;
+		const points = plugin.cursor.points as {
+			fill: (u: uPlot, seriesIdx: number) => string;
+			stroke: (u: uPlot, seriesIdx: number) => string;
+			width: (u: uPlot, seriesIdx: number, size: number) => number;
+		};
+
+		expect(points.fill(u, 1)).toBe('transparent');
+		expect(points.stroke(u, 1)).toBe('#E5484D');
+		expect(points.stroke(u, 2)).toBe('#30A46C');
+		expect(points.width(u, 1, 0)).toBe(2);
+	});
+
+	it('drawClear drops cached paths on data series only', () => {
+		const plugin = createScatterPlugin();
+		const u = createFakePlot({ series: [{ xs: [1], ys: [1] }] });
+		const [xSeries, dataSeries] = u.series as Array<{ _paths?: unknown }>;
+		xSeries._paths = 'x';
+		dataSeries._paths = 'cached';
+
+		plugin.hooks.drawClear(u);
+
+		expect(xSeries._paths).toBe('x');
+		expect(dataSeries._paths).toBeNull();
+	});
+
+	it('focus distance is zero, so the hit series wins focus', () => {
+		const plugin = createScatterPlugin();
+		expect(plugin.cursor.focus?.dist?.({} as uPlot, 1, 0, 0, 0)).toBe(0);
+	});
+});
+
+describe('applyScatterPlugin', () => {
+	it('switches the builder to faceted mode and disables drag selection', () => {
+		const builder = new UPlotConfigBuilder({ id: 'scatter' });
+		const plugin = createScatterPlugin();
+
+		applyScatterPlugin(builder, plugin);
+		const config = builder.getConfig();
+
+		expect(builder.getMode()).toBe(PlotMode.Faceted);
+		expect(config.mode).toBe(2);
+		expect(config.cursor?.drag).toMatchObject({
+			x: false,
+			y: false,
+			setScale: false,
+		});
+		expect(config.hooks?.drawClear).toHaveLength(1);
+		expect(config.hooks?.destroy).toHaveLength(1);
+	});
+
+	it('facets read x and y against the shared scales', () => {
+		expect(SCATTER_FACETS).toStrictEqual([
+			{ scale: 'x', auto: true },
+			{ scale: 'y', auto: true },
+		]);
+	});
+});

frontend/src/lib/uPlotV2/plugins/ScatterPlugin/geometry.ts

@@ -0,0 +1,96 @@
+import type uPlot from 'uplot';
+
+import type { Quadtree } from '../../utils/quadtree';
+import type { ScatterHit, ScatterPointSize, ScatterSeriesData } from './types';
+
+export interface SizeDomain {
+	min: number;
+	max: number;
+}
+
+/**
+ * Extent of the size column across every series, so equal values draw equal
+ * discs whichever group they belong to. `null` when nothing carries a size.
+ */
+export function resolveSizeDomain(data: uPlot.AlignedData): SizeDomain | null {
+	let min = Infinity;
+	let max = -Infinity;
+	for (let seriesIndex = 1; seriesIndex < data.length; seriesIndex++) {
+		const sizes = (data[seriesIndex] as unknown as ScatterSeriesData)[2];
+		if (!sizes) {
+			continue;
+		}
+		for (const size of sizes) {
+			if (size == null || !Number.isFinite(size)) {
+				continue;
+			}
+			min = Math.min(min, size);
+			max = Math.max(max, size);
+		}
+	}
+	return min <= max ? { min, max } : null;
+}
+
+/**
+ * Disc diameter for a size value. Area, not diameter, follows the value: a
+ * point worth twice as much should look twice as big.
+ */
+export function resolvePointDiameter(
+	size: number | null | undefined,
+	domain: SizeDomain | null,
+	pointSize: ScatterPointSize,
+): number {
+	if (size == null || domain == null || !Number.isFinite(size)) {
+		return pointSize.fixed;
+	}
+	if (domain.max === domain.min) {
+		return (pointSize.min + pointSize.max) / 2;
+	}
+	const t = Math.min(
+		1,
+		Math.max(0, (size - domain.min) / (domain.max - domain.min)),
+	);
+	const minArea = pointSize.min ** 2;
+	const maxArea = pointSize.max ** 2;
+	return Math.sqrt(minArea + (maxArea - minArea) * t);
+}
+
+/**
+ * Nearest disc under the cursor, or `null`. Overlapping discs resolve to the one
+ * whose centre is closest; `tolerance` widens every disc so thin points stay
+ * hoverable.
+ */
+export function resolveHit(
+	tree: Quadtree<ScatterHit>,
+	cx: number,
+	cy: number,
+	tolerance: number,
+): ScatterHit | null {
+	let best: ScatterHit | null = null;
+	let bestDistance = Infinity;
+
+	tree.get(
+		cx - tolerance,
+		cy - tolerance,
+		tolerance * 2,
+		tolerance * 2,
+		(hit) => {
+			const left = hit.x - tolerance;
+			const top = hit.y - tolerance;
+			const right = hit.x + hit.w + tolerance;
+			const bottom = hit.y + hit.h + tolerance;
+			if (cx < left || cx > right || cy < top || cy > bottom) {
+				return;
+			}
+			const dx = cx - (hit.x + hit.w / 2);
+			const dy = cy - (hit.y + hit.h / 2);
+			const distance = dx * dx + dy * dy;
+			if (distance < bestDistance) {
+				best = hit;
+				bestDistance = distance;
+			}
+		},
+	);
+
+	return best;
+}

frontend/src/lib/uPlotV2/plugins/ScatterPlugin/scatterPlugin.ts

@@ -0,0 +1,234 @@
+import uPlot, { Series } from 'uplot';
+
+import { DEFAULT_FOCUS_PROXIMITY_VALUE } from '../../constants';
+import { PlotMode } from '../../config/types';
+import type { UPlotConfigBuilder } from '../../config/UPlotConfigBuilder';
+import { Quadtree } from '../../utils/quadtree';
+import {
+	resolveHit,
+	resolvePointDiameter,
+	resolveSizeDomain,
+	SizeDomain,
+} from './geometry';
+import {
+	DEFAULT_HOVER_TOLERANCE_PX,
+	DEFAULT_SCATTER_POINT_SIZE,
+	ScatterHit,
+	ScatterPluginOptions,
+	ScatterSeriesData,
+} from './types';
+
+/** Every scatter series reads its own x and y columns against the shared scales. */
+export const SCATTER_FACETS: Series.Facet[] = [
+	{ scale: 'x', auto: true },
+	{ scale: 'y', auto: true },
+];
+
+const HIDDEN_BBOX: uPlot.BBox = { left: -10, top: -10, width: 0, height: 0 };
+
+const TWO_PI = 2 * Math.PI;
+
+/** CSS pixels between a hovered disc and the outline ring drawn around it. */
+const HOVER_RING_GAP_PX = 3;
+const HOVER_RING_WIDTH_PX = 2;
+
+/**
+ * uPlot `ceil`s a cursor point's left/top but not its size, which pulls a ring
+ * up to 1px right and down of the disc. Snapping the edge to a whole pixel and
+ * growing the span by twice the snap keeps the centre exact.
+ */
+function snapToPixel(start: number, length: number): [number, number] {
+	const snapped = Math.floor(start);
+	return [snapped, length + (start - snapped) * 2];
+}
+
+export function getSeriesStroke(u: uPlot, seriesIdx: number): string {
+	const { stroke } = u.series[seriesIdx];
+	const color = typeof stroke === 'function' ? stroke(u, seriesIdx) : stroke;
+	return typeof color === 'string' ? color : '';
+}
+
+/** uPlot caches built paths on the series; the field is internal to it. */
+type SeriesWithPaths = Series & { _paths?: Series.Paths | null };
+
+export interface ScatterPlugin {
+	/** Draws every point of a series as one path and indexes the discs for hover. */
+	pathBuilder: Series.PathBuilder;
+	/** Hover by disc rather than by nearest x: mode 2 has no shared x to scan. */
+	cursor: uPlot.Cursor;
+	hooks: {
+		drawClear: (u: uPlot) => void;
+		destroy: (u: uPlot) => void;
+	};
+	getHit: () => ScatterHit | null;
+}
+
+export function createScatterPlugin({
+	pointSize = DEFAULT_SCATTER_POINT_SIZE,
+	hoverTolerance = DEFAULT_HOVER_TOLERANCE_PX,
+}: ScatterPluginOptions = {}): ScatterPlugin {
+	let tree: Quadtree<ScatterHit> | null = null;
+	let hit: ScatterHit | null = null;
+
+	// The domain spans every series, so it is resolved once per dataset rather than
+	// once per series path.
+	let cachedData: uPlot.AlignedData | null = null;
+	let cachedDomain: SizeDomain | null = null;
+
+	function getSizeDomain(u: uPlot): SizeDomain | null {
+		if (cachedData !== u.data) {
+			cachedDomain = resolveSizeDomain(u.data);
+			cachedData = u.data;
+		}
+		return cachedDomain;
+	}
+
+	const pathBuilder: Series.PathBuilder = (u, seriesIdx, idx0, idx1) => {
+		const path = new Path2D();
+		const sizes = (u.data[seriesIdx] as unknown as ScatterSeriesData)[2];
+		const domain = getSizeDomain(u);
+		const { pxRatio } = uPlot;
+
+		uPlot.orient(
+			u,
+			seriesIdx,
+			(
+				_series,
+				dataX,
+				dataY,
+				scaleX,
+				scaleY,
+				valToPosX,
+				valToPosY,
+				xOff,
+				yOff,
+				xDim,
+				yDim,
+				_moveTo,
+				_lineTo,
+				_rect,
+				arc,
+			) => {
+				const xMin = scaleX.min ?? -Infinity;
+				const xMax = scaleX.max ?? Infinity;
+				const yMin = scaleY.min ?? -Infinity;
+				const yMax = scaleY.max ?? Infinity;
+
+				for (let i = idx0; i <= idx1; i++) {
+					const x = dataX[i];
+					const y = dataY[i];
+					if (
+						x == null ||
+						y == null ||
+						x < xMin ||
+						x > xMax ||
+						y < yMin ||
+						y > yMax
+					) {
+						continue;
+					}
+
+					const diameter =
+						resolvePointDiameter(sizes?.[i], domain, pointSize) * pxRatio;
+					const radius = diameter / 2;
+					const cx = valToPosX(x, scaleX, xDim, xOff);
+					const cy = valToPosY(y, scaleY, yDim, yOff);
+
+					path.moveTo(cx + radius, cy);
+					arc(path, cx, cy, radius, 0, TWO_PI);
+
+					tree?.add({
+						x: cx - radius - u.bbox.left,
+						y: cy - radius - u.bbox.top,
+						w: diameter,
+						h: diameter,
+						seriesIndex: seriesIdx,
+						dataIndex: i,
+					});
+				}
+			},
+		);
+
+		return { stroke: path, fill: path, clip: null };
+	};
+
+	const cursor: uPlot.Cursor = {
+		// Selection would set the dashboard time range; neither axis is time here.
+		drag: { x: false, y: false, setScale: false },
+		dataIdx: (u, seriesIdx): number | null => {
+			// uPlot asks series 1..n in order on every cursor move; resolve once.
+			if (seriesIdx === 1) {
+				const { left = -1, top = -1 } = u.cursor;
+				const { pxRatio } = uPlot;
+				hit =
+					tree && left >= 0 && top >= 0
+						? resolveHit(
+								tree,
+								left * pxRatio,
+								top * pxRatio,
+								hoverTolerance * pxRatio,
+							)
+						: null;
+			}
+			return hit?.seriesIndex === seriesIdx ? hit.dataIndex : null;
+		},
+		points: {
+			bbox: (_u, seriesIdx): uPlot.BBox => {
+				if (hit?.seriesIndex !== seriesIdx) {
+					return HIDDEN_BBOX;
+				}
+				const { pxRatio } = uPlot;
+				const inset = HOVER_RING_GAP_PX + HOVER_RING_WIDTH_PX;
+				const [left, width] = snapToPixel(
+					hit.x / pxRatio - inset,
+					hit.w / pxRatio + inset * 2,
+				);
+				const [top, height] = snapToPixel(
+					hit.y / pxRatio - inset,
+					hit.h / pxRatio + inset * 2,
+				);
+				return { left, top, width, height };
+			},
+			// An outline around the disc, so the point itself stays readable.
+			fill: (): string => 'transparent',
+			stroke: getSeriesStroke,
+			width: (): number => HOVER_RING_WIDTH_PX,
+		},
+		// uPlot only measures series that returned a data index, i.e. the hit one.
+		focus: { prox: DEFAULT_FOCUS_PROXIMITY_VALUE, dist: (): number => 0 },
+	};
+
+	return {
+		pathBuilder,
+		cursor,
+		hooks: {
+			drawClear: (u: uPlot): void => {
+				tree = new Quadtree<ScatterHit>(0, 0, u.bbox.width, u.bbox.height);
+				// The tree only knows what the path builder last drew, so cached paths
+				// must be rebuilt alongside it.
+				u.series.forEach((series, index) => {
+					if (index > 0) {
+						(series as SeriesWithPaths)._paths = null;
+					}
+				});
+			},
+			destroy: (): void => {
+				tree = null;
+				hit = null;
+				cachedData = null;
+				cachedDomain = null;
+			},
+		},
+		getHit: (): ScatterHit | null => hit,
+	};
+}
+
+export function applyScatterPlugin(
+	builder: UPlotConfigBuilder,
+	plugin: ScatterPlugin,
+): void {
+	builder.setMode(PlotMode.Faceted);
+	builder.setCursor(plugin.cursor);
+	builder.addHook('drawClear', plugin.hooks.drawClear);
+	builder.addHook('destroy', plugin.hooks.destroy);
+}

frontend/src/lib/uPlotV2/plugins/ScatterPlugin/types.ts

@@ -0,0 +1,58 @@
+import type { QuadtreeRect } from '../../utils/quadtree';
+
+/** Diameters in CSS pixels. `min`/`max` bound the area scale when a size column is mapped. */
+export interface ScatterPointSize {
+	fixed: number;
+	min: number;
+	max: number;
+}
+
+export const DEFAULT_SCATTER_POINT_SIZE: ScatterPointSize = {
+	fixed: 6,
+	min: 4,
+	max: 24,
+};
+
+/** CSS pixels around a point's disc that still register as a hover. */
+export const DEFAULT_HOVER_TOLERANCE_PX = 3;
+
+export interface ScatterPluginOptions {
+	pointSize?: ScatterPointSize;
+	hoverTolerance?: number;
+}
+
+/**
+ * One faceted series: parallel columns, one point per index. Sizes are in the
+ * caller's units and mapped to `pointSize` at draw time; `null` draws at `fixed`.
+ */
+export type ScatterSeriesData = [
+	xs: number[],
+	ys: number[],
+	sizes?: Array<number | null>,
+];
+
+/** Mode-2 data: series 0 is uPlot's x placeholder and carries nothing. */
+export type ScatterChartData = [null, ...ScatterSeriesData[]];
+
+/** A drawn point's disc, in canvas pixels relative to the plot area. */
+export interface ScatterHit extends QuadtreeRect {
+	seriesIndex: number;
+	dataIndex: number;
+}
+
+export interface ScatterChannel {
+	label: string;
+	unit?: string;
+}
+
+/** What each visual channel plots, for the tooltip and axes. */
+export interface ScatterChannels {
+	x: ScatterChannel;
+	y: ScatterChannel;
+	size?: ScatterChannel;
+}
+
+export interface ScatterPointLabel {
+	key: string;
+	value: string;
+}

frontend/src/lib/uPlotV2/plugins/TooltipPlugin/__tests__/buildClickData.test.ts

@@ -0,0 +1,52 @@
+import type uPlot from 'uplot';
+
+import { buildClickData } from '../utils';
+
+jest.mock('lib/uPlotLib/plugins/onClickPlugin', () => ({
+	getFocusedSeriesAtPosition: jest.fn(() => ({ seriesIndex: 1 })),
+}));
+
+const event = {
+	offsetX: 10,
+	offsetY: 20,
+	clientX: 110,
+	clientY: 220,
+} as MouseEvent;
+
+describe('buildClickData', () => {
+	it('skips the x-index lookups on a faceted plot, which has no shared x series', () => {
+		const posToIdx = jest.fn(() => {
+			throw new Error('faceted data[0] is null');
+		});
+		const plot = {
+			data: [null],
+			posToVal: (pos: number): number => pos * 2,
+			posToIdx,
+		} as unknown as uPlot;
+
+		expect(buildClickData(event, plot)).toStrictEqual({
+			xValue: 20,
+			yValue: 40,
+			focusedSeries: null,
+			clickedDataTimestamp: 20,
+			mouseX: 10,
+			mouseY: 20,
+			absoluteMouseX: 110,
+			absoluteMouseY: 220,
+		});
+		expect(posToIdx).not.toHaveBeenCalled();
+	});
+
+	it('resolves the focused series and clicked timestamp on an aligned plot', () => {
+		const plot = {
+			data: [[100, 200, 300]],
+			posToVal: (pos: number): number => pos,
+			posToIdx: (): number => 1,
+		} as unknown as uPlot;
+
+		expect(buildClickData(event, plot)).toMatchObject({
+			focusedSeries: { seriesIndex: 1 },
+			clickedDataTimestamp: 200,
+		});
+	});
+});

frontend/src/lib/uPlotV2/plugins/TooltipPlugin/utils.ts

@@ -174,6 +174,25 @@ export function createLayoutObserver(
 export function buildClickData(event: MouseEvent, plot: uPlot): ChartClickData {
 	const xValue = plot.posToVal(event.offsetX, 'x');
 	const yValue = plot.posToVal(event.offsetY, 'y');
+	const pointer = {
+		mouseX: event.offsetX,
+		mouseY: event.offsetY,
+		absoluteMouseX: event.clientX,
+		absoluteMouseY: event.clientY,
+	};
+
+	// A faceted plot (scatter) has no shared x series, so `data[0]` is null and
+	// `posToIdx` would throw; the hit is the plot's own to resolve.
+	if (plot.data[0] == null) {
+		return {
+			xValue,
+			yValue,
+			focusedSeries: null,
+			clickedDataTimestamp: xValue,
+			...pointer,
+		};
+	}
+
 	const focusedSeries = getFocusedSeriesAtPosition(event, plot);
 
 	const dataIndex = plot.posToIdx(event.offsetX);
@@ -193,9 +212,6 @@ export function buildClickData(event: MouseEvent, plot: uPlot): ChartClickData {
 		yValue,
 		focusedSeries,
 		clickedDataTimestamp,
-		mouseX: event.offsetX,
-		mouseY: event.offsetY,
-		absoluteMouseX: event.clientX,
-		absoluteMouseY: event.clientY,
+		...pointer,
 	};
 }

frontend/src/lib/uPlotV2/utils/__tests__/logGridSplits.test.ts

@@ -0,0 +1,101 @@
+import type uPlot from 'uplot';
+
+import {
+	keepDecadeSplits,
+	logScaleSplits,
+	spacedLogLabels,
+} from '../logGridSplits';
+
+const filter = (splits: number[]): (number | null)[] =>
+	keepDecadeSplits({} as uPlot, splits, 0, 0, 0) as (number | null)[];
+
+describe('keepDecadeSplits', () => {
+	it('keeps the powers of ten and drops the minor splits between them', () => {
+		expect(filter([1, 2, 5, 9, 10, 20, 100, 300])).toStrictEqual([
+			1,
+			null,
+			null,
+			null,
+			10,
+			null,
+			100,
+			null,
+		]);
+	});
+
+	it('keeps sub-unit decades despite float noise', () => {
+		expect(filter([0.001, 0.0010000000000000002, 0.002, 0.1])).toStrictEqual([
+			0.001,
+			0.0010000000000000002,
+			null,
+			0.1,
+		]);
+	});
+
+	it('keeps zero and negative decades on a symmetric log', () => {
+		expect(filter([-100, -50, -1, 0, 1, 5])).toStrictEqual([
+			-100,
+			null,
+			-1,
+			0,
+			1,
+			null,
+		]);
+	});
+});
+
+describe('logScaleSplits', () => {
+	const splitsFor = (min: number, max: number): number[] =>
+		(
+			logScaleSplits as (
+				u: uPlot,
+				axisIdx: number,
+				min: number,
+				max: number,
+			) => number[]
+		)({} as uPlot, 0, min, max);
+
+	it('splits at 1, 2 and 5 × 10ⁿ inside an unsnapped range', () => {
+		expect(splitsFor(10.6, 990)).toStrictEqual([20, 50, 100, 200, 500]);
+	});
+
+	it('includes the ends when they fall on a split', () => {
+		expect(splitsFor(0.1, 10)).toStrictEqual([0.1, 0.2, 0.5, 1, 2, 5, 10]);
+	});
+
+	it('is empty for a range a log scale cannot hold', () => {
+		expect(splitsFor(0, 10)).toStrictEqual([]);
+		expect(splitsFor(5, 5)).toStrictEqual([]);
+	});
+});
+
+describe('spacedLogLabels', () => {
+	// 100px per decade.
+	const plot = {
+		axes: [{ scale: 'x' }],
+		valToPos: (value: number): number => Math.log10(value) * 100,
+	} as unknown as uPlot;
+	const label = (splits: number[], space: number): (number | null)[] =>
+		spacedLogLabels(plot, splits, 0, space, 0) as (number | null)[];
+
+	it('always labels the powers of ten', () => {
+		expect(label([10, 20, 50, 100], 200)).toStrictEqual([10, null, null, 100]);
+	});
+
+	it('adds a 2 or 5 that clears the labels already kept', () => {
+		// 20 is 30px from 10; 50 is 70px from 10 and 30px from 100.
+		expect(label([10, 20, 50, 100], 25)).toStrictEqual([10, 20, 50, 100]);
+		expect(label([10, 20, 50, 100], 40)).toStrictEqual([10, null, null, 100]);
+	});
+
+	it('labels both ends of a range spanning under a decade', () => {
+		// 100 sits at 200px; 20 (130px) and 500 (270px) clear it, 50 and 200 do not.
+		expect(label([20, 50, 100, 200, 500], 60)).toStrictEqual([
+			20,
+			null,
+			100,
+			null,
+			500,
+		]);
+	});
+});

frontend/src/lib/uPlotV2/utils/__tests__/quadtree.test.ts

@@ -0,0 +1,70 @@
+import { Quadtree, QuadtreeRect } from '../quadtree';
+
+interface Item extends QuadtreeRect {
+	id: number;
+}
+
+function collect(
+	tree: Quadtree<Item>,
+	x: number,
+	y: number,
+	w: number,
+	h: number,
+): Set<number> {
+	const ids = new Set<number>();
+	tree.get(x, y, w, h, (item) => ids.add(item.id));
+	return ids;
+}
+
+describe('Quadtree', () => {
+	it('returns items in the queried region and not those far from it', () => {
+		const tree = new Quadtree<Item>(0, 0, 100, 100);
+		tree.add({ id: 1, x: 10, y: 10, w: 5, h: 5 });
+		tree.add({ id: 2, x: 80, y: 80, w: 5, h: 5 });
+
+		// Below the split threshold every item is visited; callers refine the hit.
+		expect(collect(tree, 9, 9, 8, 8)).toStrictEqual(new Set([1, 2]));
+	});
+
+	it('splits past the object limit and still finds every item', () => {
+		const tree = new Quadtree<Item>(0, 0, 100, 100);
+		const total = 50;
+		for (let id = 0; id < total; id++) {
+			tree.add({ id, x: (id % 10) * 10, y: Math.floor(id / 10) * 10, w: 4, h: 4 });
+		}
+
+		expect(collect(tree, 0, 0, 100, 100).size).toBe(total);
+	});
+
+	it('after a split, a query in one quadrant skips items confined to another', () => {
+		const tree = new Quadtree<Item>(0, 0, 100, 100);
+		for (let id = 0; id < 20; id++) {
+			// All in the north-west quadrant.
+			tree.add({ id, x: 1 + id, y: 1, w: 2, h: 2 });
+		}
+		tree.add({ id: 99, x: 90, y: 90, w: 2, h: 2 });
+
+		const northWest = collect(tree, 0, 0, 10, 10);
+		expect(northWest.has(99)).toBe(false);
+		expect(collect(tree, 85, 85, 10, 10).has(99)).toBe(true);
+	});
+
+	it('reports an item straddling the midline from either side', () => {
+		const tree = new Quadtree<Item>(0, 0, 100, 100);
+		for (let id = 0; id < 20; id++) {
+			tree.add({ id, x: 1, y: 1 + id, w: 2, h: 2 });
+		}
+		tree.add({ id: 99, x: 48, y: 48, w: 4, h: 4 });
+
+		expect(collect(tree, 40, 40, 5, 5).has(99)).toBe(true);
+		expect(collect(tree, 55, 55, 5, 5).has(99)).toBe(true);
+	});
+
+	it('clear empties the tree', () => {
+		const tree = new Quadtree<Item>(0, 0, 100, 100);
+		tree.add({ id: 1, x: 10, y: 10, w: 5, h: 5 });
+		tree.clear();
+
+		expect(collect(tree, 0, 0, 100, 100).size).toBe(0);
+	});
+});

frontend/src/lib/uPlotV2/utils/__tests__/scale.test.ts

@@ -195,3 +195,40 @@ describe('scale utils', () => {
 		});
 	});
 });
+
+describe('symmetric log scale', () => {
+	it('maps to uPlot arcsinh with the given linear threshold', () => {
+		expect(
+			scaleUtils.getDistributionConfig({
+				time: false,
+				distr: DistributionType.SymmetricLog,
+				asinhThreshold: 0.01,
+			}),
+		).toStrictEqual({ distr: 4, log: 10, asinh: 0.01 });
+
+		expect(
+			scaleUtils.getDistributionConfig({
+				time: false,
+				distr: DistributionType.SymmetricLog,
+			}).asinh,
+		).toBe(scaleUtils.DEFAULT_ASINH_THRESHOLD);
+	});
+
+	it('ranges a distr 4 scale through uPlot.rangeAsinh', () => {
+		const rangeAsinh = jest.fn(() => [-10, 1000] as uPlot.Range.MinMax);
+		Object.assign(uPlot, { rangeAsinh });
+
+		const rangeFn = scaleUtils.createRangeFunction({
+			rangeConfig: {} as uPlot.Range.Config,
+			hardMinOnly: false,
+			hardMaxOnly: false,
+			hasFixedRange: false,
+			min: null,
+			max: null,
+		});
+		const u = { scales: { y: { distr: 4, log: 10 } } } as unknown as uPlot;
+
+		expect(rangeFn(u, -3, 700, 'y')).toStrictEqual([-10, 1000]);
+		expect(rangeAsinh).toHaveBeenCalledWith(-3, 700, 10, true);
+	});
+});

frontend/src/lib/uPlotV2/utils/logGridSplits.ts

@@ -0,0 +1,76 @@
+import type uPlot from 'uplot';
+
+const DECADE_TOLERANCE = 1e-9;
+
+function isDecade(value: number): boolean {
+	if (value === 0) {
+		return true;
+	}
+	const exponent = Math.log10(Math.abs(value));
+	return Math.abs(exponent - Math.round(exponent)) < DECADE_TOLERANCE;
+}
+
+/**
+ * A log axis splits at every 1–9 × 10ⁿ; a line on each buries the data under
+ * a mesh. Keeps the powers of ten (and 0, which a symmetric log can include).
+ */
+export const keepDecadeSplits: uPlot.Axis.Filter = (_u, splits) =>
+	splits.map((split) => (split != null && isDecade(split) ? split : null));
+
+const LOG_SPLIT_MULTIPLES = [1, 2, 5];
+
+/**
+ * Splits at 1, 2 and 5 × 10ⁿ inside the scale. uPlot's own log splits step
+ * from the scale's minimum, so a range not snapped to a power of ten would
+ * label 10.79, 21.58, … instead.
+ */
+export const logScaleSplits: uPlot.Axis.Splits = (_u, _axisIdx, min, max) => {
+	if (!(min > 0) || !(max > min)) {
+		return [];
+	}
+	const splits: number[] = [];
+	for (
+		let exponent = Math.floor(Math.log10(min));
+		exponent <= Math.ceil(Math.log10(max));
+		exponent++
+	) {
+		LOG_SPLIT_MULTIPLES.forEach((multiple) => {
+			// Rounded through toPrecision so 0.1 × 3 noise can't fall outside [min, max].
+			const split = Number((multiple * 10 ** exponent).toPrecision(12));
+			if (split >= min && split <= max) {
+				splits.push(split);
+			}
+		});
+	}
+	return splits;
+};
+
+/**
+ * Labels for `logScaleSplits`: every power of ten, then any 2 or 5 that sits
+ * at least `space` px from the labels already kept, so a range spanning under
+ * one decade still reads at both ends.
+ */
+export const spacedLogLabels: uPlot.Axis.Filter = (
+	u,
+	splits,
+	axisIdx,
+	space,
+) => {
+	const scaleKey = u.axes[axisIdx]?.scale ?? 'x';
+	const positions = splits.map((split) =>
+		split == null ? null : u.valToPos(split, scaleKey),
+	);
+	const kept = splits.map((split) => split != null && isDecade(split));
+	const isClear = (index: number): boolean =>
+		kept.every(
+			(isKept, other) =>
+				!isKept ||
+				Math.abs((positions[other] ?? 0) - (positions[index] ?? 0)) >= space,
+		);
+	splits.forEach((split, index) => {
+		if (split != null && !kept[index] && isClear(index)) {
+			kept[index] = true;
+		}
+	});
+	return splits.map((split, index) => (kept[index] ? split : null));
+};

frontend/src/lib/uPlotV2/utils/quadtree.ts

@@ -0,0 +1,110 @@
+export interface QuadtreeRect {
+	x: number;
+	y: number;
+	w: number;
+	h: number;
+}
+
+const MAX_OBJECTS = 10;
+const MAX_LEVELS = 4;
+
+/**
+ * Spatial index over axis-aligned rectangles, for answering "what is under the
+ * cursor" on charts whose marks have no shared x order to binary-search. An item
+ * straddling a quadrant boundary lives in every quadrant it touches, so `get` can
+ * report it more than once.
+ */
+export class Quadtree<T extends QuadtreeRect = QuadtreeRect> {
+	private items: T[] = [];
+	private quadrants: Quadtree<T>[] | null = null;
+
+	constructor(
+		private readonly x: number,
+		private readonly y: number,
+		private readonly w: number,
+		private readonly h: number,
+		private readonly level = 0,
+	) {}
+
+	add(item: T): void {
+		if (this.quadrants) {
+			this.forEachQuadrant(item, (quadrant) => quadrant.add(item));
+			return;
+		}
+
+		this.items.push(item);
+
+		if (this.items.length > MAX_OBJECTS && this.level < MAX_LEVELS) {
+			this.split();
+			const items = this.items;
+			this.items = [];
+			for (const existing of items) {
+				this.forEachQuadrant(existing, (quadrant) => quadrant.add(existing));
+			}
+		}
+	}
+
+	/** Visits every item whose quadrant overlaps the rectangle; callers refine the test. */
+	get(
+		x: number,
+		y: number,
+		w: number,
+		h: number,
+		visit: (item: T) => void,
+	): void {
+		for (const item of this.items) {
+			visit(item);
+		}
+		if (this.quadrants) {
+			this.forEachQuadrant({ x, y, w, h }, (quadrant) =>
+				quadrant.get(x, y, w, h, visit),
+			);
+		}
+	}
+
+	clear(): void {
+		this.items = [];
+		this.quadrants = null;
+	}
+
+	private split(): void {
+		const w = this.w / 2;
+		const h = this.h / 2;
+		const level = this.level + 1;
+		// North-east, north-west, south-west, south-east.
+		this.quadrants = [
+			new Quadtree<T>(this.x + w, this.y, w, h, level),
+			new Quadtree<T>(this.x, this.y, w, h, level),
+			new Quadtree<T>(this.x, this.y + h, w, h, level),
+			new Quadtree<T>(this.x + w, this.y + h, w, h, level),
+		];
+	}
+
+	private forEachQuadrant(
+		rect: QuadtreeRect,
+		visit: (quadrant: Quadtree<T>) => void,
+	): void {
+		if (!this.quadrants) {
+			return;
+		}
+		const midX = this.x + this.w / 2;
+		const midY = this.y + this.h / 2;
+		const startsNorth = rect.y < midY;
+		const startsWest = rect.x < midX;
+		const endsEast = rect.x + rect.w > midX;
+		const endsSouth = rect.y + rect.h > midY;
+
+		if (startsNorth && endsEast) {
+			visit(this.quadrants[0]);
+		}
+		if (startsWest && startsNorth) {
+			visit(this.quadrants[1]);
+		}
+		if (startsWest && endsSouth) {
+			visit(this.quadrants[2]);
+		}
+		if (endsEast && endsSouth) {
+			visit(this.quadrants[3]);
+		}
+	}
+}

frontend/src/lib/uPlotV2/utils/scale.ts

@@ -58,18 +58,23 @@ function normalizeLogLimit(
 	return logBase ** exp;
 }
 
+export const DEFAULT_ASINH_THRESHOLD = 1;
+
 /**
- * Returns uPlot scale distribution options for the Y axis.
- * Time (X) scale gets no distr/log; Y scale gets distr 1 (linear) or 3 (log) and log base 2 or 10.
+ * Returns uPlot scale distribution options for a value axis.
+ * Time scales get no distr/log; value scales get distr 1 (linear), 3 (log) or
+ * 4 (arcsinh, uPlot's symmetric log) and log base 2 or 10.
  */
 export function getDistributionConfig({
 	time,
 	distr,
 	logBase,
+	asinhThreshold,
 }: {
 	time: ScaleProps['time'];
 	distr?: DistributionType;
 	logBase?: number;
+	asinhThreshold?: number;
 }): Partial<Scale> {
 	if (time) {
 		return {};
@@ -77,6 +82,14 @@ export function getDistributionConfig({
 
 	const resolvedLogBase = (logBase ?? 10) === 2 ? 2 : 10;
 
+	if (distr === DistributionType.SymmetricLog) {
+		return {
+			distr: 4,
+			log: resolvedLogBase,
+			asinh: asinhThreshold ?? DEFAULT_ASINH_THRESHOLD,
+		};
+	}
+
 	return {
 		distr: distr === DistributionType.Logarithmic ? 3 : 1,
 		log: resolvedLogBase,
@@ -197,6 +210,33 @@ function getLogScaleRange(
 	);
 }
 
+/**
+ * Computes the arcsinh-scale range using uPlot.rangeAsinh, which pads to whole
+ * magnitudes on either side of zero and pins an edge that sits exactly on zero.
+ */
+function getAsinhScaleRange(
+	minMax: Range.MinMax,
+	params: RangeFunctionParams,
+	dataMin: number | null,
+	dataMax: number | null,
+	logBase?: uPlot.Scale['log'],
+): Range.MinMax {
+	const { min, max } = params;
+	const resolvedMin = min ?? dataMin;
+	const resolvedMax = max ?? dataMax;
+
+	if (resolvedMin == null || resolvedMax == null) {
+		return minMax;
+	}
+
+	return uPlot.rangeAsinh(
+		resolvedMin,
+		resolvedMax,
+		(logBase ?? 10) as 2 | 10,
+		true,
+	);
+}
+
 /**
  * Snaps log-scale [min, max] to exact powers of logBase (nearest magnitude below/above).
  * If min and max would be equal after snapping, max is increased by one magnitude so the range is valid.
@@ -299,6 +339,8 @@ export function createRangeFunction(
 			minMax = getLogScaleRange(minMax, params, dataMin, dataMax, logBase);
 			const logFn = scale.log === 2 ? Math.log2 : Math.log10;
 			minMax = adjustLogRange(minMax, (logBase ?? 10) as number, logFn);
+		} else if (scale.distr === 4) {
+			minMax = getAsinhScaleRange(minMax, params, dataMin, dataMax, logBase);
 		}
 
 		minMax = applyHardLimits(minMax, params, scale.distr ?? 1);

frontend/src/lib/visualization/charts/ChartWrapper/ChartWrapper.tsx

@@ -37,6 +37,7 @@ export default function ChartWrapper({
 	syncKey,
 	syncFilterMode,
 	onDestroy = noop,
+	plotRef,
 	children,
 	layoutChildren,
 	yAxisUnit,
@@ -114,6 +115,7 @@ export default function ChartWrapper({
 						height={chartHeight}
 						plotRef={(plot): void => {
 							plotInstanceRef.current = plot;
+							plotRef?.(plot);
 						}}
 						onDestroy={(plot: uPlot): void => {
 							plotInstanceRef.current = null;

frontend/src/lib/visualization/charts/ChartWrapper/__tests__/ChartWrapper.test.tsx

@@ -0,0 +1,45 @@
+import { render } from 'tests/test-utils';
+import type uPlot from 'uplot';
+
+import { LegendPosition } from 'lib/uPlotV2/components/types';
+import { UPlotConfigBuilder } from 'lib/uPlotV2/config/UPlotConfigBuilder';
+
+import ChartWrapper from '../ChartWrapper';
+
+const FAKE_PLOT = { id: 'plot' } as unknown as uPlot;
+
+jest.mock('lib/uPlotV2/components/UPlotChart/UPlotChart', () => ({
+	__esModule: true,
+	default: ({ plotRef }: { plotRef?: (plot: uPlot | null) => void }): null => {
+		plotRef?.(FAKE_PLOT);
+		return null;
+	},
+}));
+
+window.ResizeObserver =
+	window.ResizeObserver ||
+	jest.fn().mockImplementation(() => ({
+		disconnect: jest.fn(),
+		observe: jest.fn(),
+		unobserve: jest.fn(),
+	}));
+
+describe('ChartWrapper', () => {
+	it('hands the plot instance to the caller', () => {
+		const plotRef = jest.fn();
+		render(
+			<ChartWrapper
+				config={new UPlotConfigBuilder({ id: 'chart' })}
+				data={[[1], [2]]}
+				width={400}
+				height={300}
+				legendConfig={{ position: LegendPosition.BOTTOM }}
+				showLegend={false}
+				showTooltip={false}
+				plotRef={plotRef}
+			/>,
+		);
+
+		expect(plotRef).toHaveBeenCalledWith(FAKE_PLOT);
+	});
+});

frontend/src/lib/visualization/charts/Scatter/Scatter.stories.tsx

@@ -0,0 +1,256 @@
+import { useMemo, useState } from 'react';
+import type { Meta, StoryObj } from '@storybook/react-vite';
+import { useIsDarkMode } from 'hooks/useDarkMode';
+import { LegendPosition } from 'lib/uPlotV2/components/types';
+import type { Threshold } from 'lib/uPlotV2/hooks/types';
+import type { ScatterPointLabel } from 'lib/uPlotV2/plugins/ScatterPlugin/types';
+
+import Scatter from './Scatter';
+import {
+	buildScatterConfig,
+	prepareScatterChartData,
+	ScatterAxisScale,
+	ScatterSeries,
+} from './utils';
+
+const SERVICES = [
+	'frontend',
+	'cart',
+	'checkout',
+	'payment',
+	'shipping',
+	'currency',
+	'email',
+	'recommendation',
+	'ads',
+	'product-catalog',
+];
+
+type Shape = 'spread' | 'single' | 'sameX';
+
+interface ScatterStoryProps {
+	groups: number;
+	pointsPerGroup: number;
+	/** Adds an error-count size column. */
+	sized: boolean;
+	xScale: ScatterAxisScale;
+	yScale: ScatterAxisScale;
+	/** Zeroes a share of y values, which forces the symmetric log. */
+	withZeros: boolean;
+	shape: Shape;
+	thresholds: boolean;
+	pointSize: number;
+	/** 0–1. */
+	fillOpacity: number;
+	width: number;
+	height: number;
+}
+
+/** Deterministic, so a story renders the same points on every run. */
+function createRng(seed: number): () => number {
+	let state = seed >>> 0;
+	return (): number => {
+		state = (state * 1664525 + 1013904223) >>> 0;
+		return state / 2 ** 32;
+	};
+}
+
+function buildSeries({
+	groups,
+	pointsPerGroup,
+	sized,
+	withZeros,
+	shape,
+}: ScatterStoryProps): ScatterSeries[] {
+	const rng = createRng(42);
+	return Array.from({ length: groups }, (_, groupIndex) => {
+		const label = SERVICES[groupIndex % SERVICES.length];
+		// Each service sits in its own throughput/latency band, so groups are telling
+		// apart rather than one cloud.
+		const baseThroughput = 20 * 2 ** (groupIndex % 5);
+		const baseLatency = 40 + 60 * (groupIndex % 4);
+
+		const count = shape === 'single' ? 1 : pointsPerGroup;
+		const xs: number[] = [];
+		const ys: number[] = [];
+		const sizes: Array<number | null> = [];
+
+		for (let i = 0; i < count; i++) {
+			const throughput =
+				shape === 'sameX' ? baseThroughput : baseThroughput * (0.5 + rng() * 1.5);
+			// Latency grows with load, plus noise; the odd outlier keeps the axis honest.
+			const outlier = rng() < 0.03 ? 4 + rng() * 6 : 1;
+			let latency =
+				baseLatency *
+				(0.8 + (throughput / baseThroughput) * 0.4 + rng() * 0.3) *
+				outlier;
+			if (withZeros && rng() < 0.2) {
+				latency = 0;
+			}
+			xs.push(Number(throughput.toFixed(2)));
+			ys.push(Number(latency.toFixed(2)));
+			sizes.push(rng() < 0.1 ? null : Math.round(rng() * rng() * 500));
+		}
+
+		return sized ? { label, xs, ys, sizes } : { label, xs, ys };
+	});
+}
+
+const THRESHOLDS: Threshold[] = [
+	{
+		thresholdValue: 300,
+		thresholdUnit: 'ms',
+		thresholdColor: '#E5484D',
+		thresholdLabel: 'p99 SLO',
+	},
+];
+
+function ScatterStory(props: ScatterStoryProps): JSX.Element {
+	const {
+		xScale,
+		yScale,
+		sized,
+		thresholds,
+		pointSize,
+		fillOpacity,
+		width,
+		height,
+	} = props;
+	const isDarkMode = useIsDarkMode();
+	const [drawMs, setDrawMs] = useState<number | null>(null);
+
+	const series = useMemo(() => buildSeries(props), [props]);
+	const pointCount = series.reduce((sum, entry) => sum + entry.xs.length, 0);
+	const drawLabel = drawMs === null ? '—' : `${drawMs.toFixed(1)} ms`;
+
+	const config = useMemo(() => {
+		const builder = buildScatterConfig({
+			id: 'scatter-story',
+			series,
+			isDarkMode,
+			x: { unit: 'reqps', scale: xScale },
+			y: { unit: 'ms', scale: yScale },
+			pointSize: { fixed: pointSize, min: 4, max: pointSize * 4 },
+			fillOpacity,
+			thresholds: thresholds ? THRESHOLDS : undefined,
+		});
+		let started = 0;
+		builder.addHook('drawClear', (): void => {
+			started = performance.now();
+		});
+		builder.addHook('draw', (): void => {
+			setDrawMs(performance.now() - started);
+		});
+		return builder;
+	}, [series, isDarkMode, xScale, yScale, pointSize, fillOpacity, thresholds]);
+
+	const data = useMemo(() => prepareScatterChartData(series), [series]);
+
+	const resolvePointLabels = (
+		seriesIndex: number,
+		dataIndex: number,
+	): ScatterPointLabel[] => [
+		{ key: 'service.name', value: series[seriesIndex - 1]?.label ?? '' },
+		{
+			key: 'k8s.pod.name',
+			value: `pod-${dataIndex.toString().padStart(3, '0')}`,
+		},
+	];
+
+	return (
+		<div style={{ width, padding: 16 }}>
+			<Scatter
+				config={config}
+				data={data}
+				width={width}
+				height={height}
+				legendConfig={{ position: LegendPosition.BOTTOM }}
+				channels={{
+					x: { label: 'Throughput', unit: 'reqps' },
+					y: { label: 'p99 latency', unit: 'ms' },
+					...(sized && { size: { label: 'Errors', unit: 'short' } }),
+				}}
+				resolvePointLabels={resolvePointLabels}
+				canPinTooltip
+			/>
+			<p style={{ fontFamily: 'var(--font-mono)', fontSize: 12, opacity: 0.7 }}>
+				{`${pointCount.toLocaleString()} points · last draw ${drawLabel}`}
+			</p>
+		</div>
+	);
+}
+
+const meta = {
+	title: 'Charts/Scatter',
+	component: ScatterStory,
+	parameters: { layout: 'padded' },
+	args: {
+		groups: 1,
+		pointsPerGroup: 10,
+		sized: false,
+		xScale: ScatterAxisScale.Linear,
+		yScale: ScatterAxisScale.Linear,
+		withZeros: false,
+		shape: 'spread',
+		thresholds: false,
+		pointSize: 6,
+		fillOpacity: 0.7,
+		width: 800,
+		height: 420,
+	},
+	argTypes: {
+		shape: { control: 'radio', options: ['spread', 'single', 'sameX'] },
+		xScale: { control: 'radio', options: Object.values(ScatterAxisScale) },
+		yScale: { control: 'radio', options: Object.values(ScatterAxisScale) },
+		fillOpacity: { control: { type: 'range', min: 0, max: 1, step: 0.05 } },
+		pointSize: { control: { type: 'range', min: 2, max: 16, step: 1 } },
+	},
+} satisfies Meta<ScatterStoryProps>;
+
+export default meta;
+
+type Story = StoryObj<ScatterStoryProps>;
+
+/** One service, ten points: axes formatted with units, hover picks the right point. */
+export const Basic: Story = {};
+
+/** Five services, one legend entry each; toggling a row hides its points. */
+export const Grouped: Story = {
+	args: { groups: 5, pointsPerGroup: 40 },
+};
+
+/** Error count as disc area, between the configured min and max diameters. */
+export const Sized: Story = {
+	args: { groups: 5, pointsPerGroup: 40, sized: true, pointSize: 5 },
+};
+
+/** Log x; a fifth of the latencies are 0, so y falls back to the symmetric log. */
+export const LogAxes: Story = {
+	args: {
+		groups: 5,
+		pointsPerGroup: 60,
+		xScale: ScatterAxisScale.Log,
+		yScale: ScatterAxisScale.Log,
+		withZeros: true,
+	},
+};
+
+/** A single point still gets a padded range rather than an empty plot. */
+export const SinglePoint: Story = {
+	args: { shape: 'single' },
+};
+
+/** Fifty points sharing one x collide on nothing: no shared x array to align. */
+export const SameX: Story = {
+	args: { groups: 3, pointsPerGroup: 50, shape: 'sameX' },
+};
+
+/** Horizontal line with label on the y axis; the scale stretches to include it. */
+export const Thresholds: Story = {
+	args: { groups: 3, pointsPerGroup: 40, thresholds: true },
+};
+
+/** Perf harness: raise `pointsPerGroup` and read the draw time under the chart. */
+export const Dense: Story = {
+	args: { groups: 5, pointsPerGroup: 1000, pointSize: 4, fillOpacity: 0.5 },
+};

frontend/src/lib/visualization/charts/Scatter/Scatter.tsx

@@ -0,0 +1,102 @@
+import { useCallback, useRef } from 'react';
+import ChartWrapper from 'lib/visualization/charts/ChartWrapper/ChartWrapper';
+import ScatterTooltip from 'lib/uPlotV2/components/Tooltip/ScatterTooltip';
+import {
+	ScatterTooltipProps,
+	TooltipRenderArgs,
+} from 'lib/uPlotV2/components/types';
+import type { ChartClickData } from 'lib/uPlotV2/plugins/TooltipPlugin/types';
+import uPlot from 'uplot';
+
+import { ScatterChartProps } from 'lib/visualization/charts/types';
+
+import { getSeriesStroke } from 'lib/uPlotV2/plugins/ScatterPlugin/scatterPlugin';
+
+import { getCursorHit } from './utils';
+
+// Faceted uPlot reads series 1's facets at init, so a chart with no series cannot
+// mount; empty aligned data makes the shell show its no-data state instead.
+const EMPTY_ALIGNED_DATA: uPlot.AlignedData = [[]];
+
+export default function Scatter(props: ScatterChartProps): JSX.Element {
+	const {
+		children,
+		customTooltip,
+		channels,
+		resolvePointLabels,
+		pinnedTooltipElement,
+		onPointClick,
+		plotRef,
+		...rest
+	} = props;
+
+	const plotInstanceRef = useRef<uPlot | null>(null);
+
+	const handlePlotRef = useCallback(
+		(plot: uPlot | null): void => {
+			plotInstanceRef.current = plot;
+			plotRef?.(plot);
+		},
+		[plotRef],
+	);
+
+	// The shared click data finds its series by x position, which a faceted plot
+	// has no single axis for; the hit comes from the cursor instead.
+	const handleClick = useCallback(
+		(click: ChartClickData): void => {
+			const plot = plotInstanceRef.current;
+			const hit = plot ? getCursorHit(plot) : null;
+			if (!plot || !hit || !onPointClick) {
+				return;
+			}
+			onPointClick({
+				...hit,
+				color: getSeriesStroke(plot, hit.seriesIndex),
+				coordinates: { x: click.absoluteMouseX, y: click.absoluteMouseY },
+			});
+		},
+		[onPointClick],
+	);
+
+	const renderTooltip = useCallback(
+		(args: TooltipRenderArgs): React.ReactNode => {
+			if (customTooltip) {
+				return customTooltip(args);
+			}
+			const tooltipProps: ScatterTooltipProps = {
+				...args,
+				id: rest.config.getId(),
+				channels,
+				resolvePointLabels,
+				decimalPrecision: rest.decimalPrecision,
+				canPinTooltip: rest.canPinTooltip,
+				renderTooltipFooter: rest.renderTooltipFooter,
+			};
+			return <ScatterTooltip {...tooltipProps} />;
+		},
+		[
+			customTooltip,
+			channels,
+			resolvePointLabels,
+			rest.config,
+			rest.decimalPrecision,
+			rest.canPinTooltip,
+			rest.renderTooltipFooter,
+		],
+	);
+
+	const hasSeries = rest.data.length > 1;
+
+	return (
+		<ChartWrapper
+			{...rest}
+			data={hasSeries ? rest.data : EMPTY_ALIGNED_DATA}
+			plotRef={handlePlotRef}
+			onClick={onPointClick ? handleClick : rest.onClick}
+			customTooltip={renderTooltip}
+			pinnedTooltipElement={pinnedTooltipElement}
+		>
+			{children}
+		</ChartWrapper>
+	);
+}

frontend/src/lib/visualization/charts/Scatter/__tests__/scatterRange.test.ts

@@ -0,0 +1,97 @@
+import { DistributionType } from 'lib/uPlotV2/config/types';
+import uPlot from 'uplot';
+
+import { createScatterRange, type ScatterRangeOptions } from '../scatterRange';
+
+/** A 220px-tall, 420px-wide plot at a device pixel ratio of 1. */
+const plot = { bbox: { width: 420, height: 220 } } as unknown as uPlot;
+
+function rangeOf(
+	options: Partial<ScatterRangeOptions>,
+	dataMin: number | null,
+	dataMax: number | null,
+): [number, number] {
+	const range = createScatterRange({
+		dimension: 'y',
+		marginPx: 10,
+		distribution: DistributionType.Linear,
+		...options,
+	}) as (u: uPlot, min: number | null, max: number | null) => [number, number];
+	return range(plot, dataMin, dataMax);
+}
+
+describe('createScatterRange', () => {
+	beforeAll(() => {
+		Object.defineProperty(uPlot, 'pxRatio', { value: 1, configurable: true });
+	});
+
+	it('widens a linear range so the data sits marginPx inside each edge', () => {
+		// 200px of data inside 220px: 10px at each end is 1/20 of the span.
+		expect(rangeOf({}, 0, 100)).toStrictEqual([-5, 105]);
+	});
+
+	it('measures the margin along its own axis', () => {
+		// 400px of data inside 420px.
+		expect(rangeOf({ dimension: 'x' }, 0, 100)).toStrictEqual([-2.5, 102.5]);
+	});
+
+	it('pads a log range in decades, without snapping to the next power of ten', () => {
+		const [min, max] = rangeOf(
+			{ distribution: DistributionType.Logarithmic },
+			1,
+			10,
+		);
+		expect(Math.log10(min)).toBeCloseTo(-0.05);
+		expect(Math.log10(max)).toBeCloseTo(1.05);
+	});
+
+	it('pads a symmetric log range in its asinh space', () => {
+		const [min, max] = rangeOf(
+			{ distribution: DistributionType.SymmetricLog, asinhThreshold: 2 },
+			0,
+			20,
+		);
+		const span = Math.asinh(10);
+		expect(Math.asinh(min / 2)).toBeCloseTo(-span / 20);
+		expect(Math.asinh(max / 2)).toBeCloseTo(span + span / 20);
+	});
+
+	it('stretches to the soft limits before padding', () => {
+		expect(rangeOf({ softMin: 0, softMax: 200 }, 50, 100)).toStrictEqual([
+			-10, 210,
+		]);
+	});
+
+	it('ignores a soft min at or below zero on a log scale', () => {
+		const [min] = rangeOf(
+			{ distribution: DistributionType.Logarithmic, softMin: 0 },
+			10,
+			100,
+		);
+		expect(min).toBeGreaterThan(0);
+	});
+
+	it('spreads a single value around itself', () => {
+		const [min, max] = rangeOf({}, 5, 5);
+		expect(min).toBeLessThan(5);
+		expect(max).toBeGreaterThan(5);
+		expect(5 - min).toBeCloseTo(max - 5);
+	});
+
+	it('falls back to a unit range with no data', () => {
+		expect(rangeOf({}, null, null)).toStrictEqual([0, 1]);
+		expect(
+			rangeOf({ distribution: DistributionType.Logarithmic }, null, null),
+		).toStrictEqual([1, 10]);
+	});
+
+	it('skips the margin on a plot too small to hold it', () => {
+		const tiny = { bbox: { width: 15, height: 15 } } as unknown as uPlot;
+		const range = createScatterRange({
+			dimension: 'y',
+			marginPx: 10,
+			distribution: DistributionType.Linear,
+		}) as (u: uPlot, min: number, max: number) => [number, number];
+		expect(range(tiny, 0, 100)).toStrictEqual([0, 100]);
+	});
+});

frontend/src/lib/visualization/charts/Scatter/__tests__/utils.test.ts

@@ -0,0 +1,199 @@
+import type uPlot from 'uplot';
+import { DistributionType } from 'lib/uPlotV2/config/types';
+
+import {
+	buildScatterConfig,
+	getCursorHit,
+	prepareScatterChartData,
+	resolveAxisDistribution,
+	ScatterAxisScale,
+	ScatterSeries,
+} from '../utils';
+
+jest.mock('lib/visualization/panels/utils/legendVisibilityUtils', () => ({
+	getStoredSeriesVisibility: jest.fn(),
+}));
+
+const SERIES: ScatterSeries[] = [
+	{ label: 'cart', xs: [10, 20], ys: [100, 200], sizes: [1, null] },
+	{ label: 'checkout', xs: [30], ys: [0] },
+];
+
+describe('prepareScatterChartData', () => {
+	it('lays series out as facets behind an empty x slot', () => {
+		expect(prepareScatterChartData(SERIES)).toStrictEqual([
+			null,
+			[
+				[10, 20],
+				[100, 200],
+				[1, null],
+			],
+			[[30], [0]],
+		]);
+	});
+});
+
+describe('getCursorHit', () => {
+	const plotWith = (idxs: Array<number | null>): uPlot =>
+		({ cursor: { idxs } }) as unknown as uPlot;
+
+	it('reads the series the scatter plugin answered for', () => {
+		expect(getCursorHit(plotWith([null, null, 4, null]))).toStrictEqual({
+			seriesIndex: 2,
+			dataIndex: 4,
+		});
+	});
+
+	it('takes a data index of 0 as a hit', () => {
+		expect(getCursorHit(plotWith([0, 0]))).toStrictEqual({
+			seriesIndex: 1,
+			dataIndex: 0,
+		});
+	});
+
+	it('is null off every dot', () => {
+		expect(getCursorHit(plotWith([null, null]))).toBeNull();
+		expect(getCursorHit({ cursor: {} } as unknown as uPlot)).toBeNull();
+	});
+});
+
+describe('resolveAxisDistribution', () => {
+	it('is linear when asked, whatever the values', () => {
+		expect(
+			resolveAxisDistribution([1, 1e6], ScatterAxisScale.Linear),
+		).toStrictEqual({ distribution: DistributionType.Linear });
+	});
+
+	it('is a plain log when every value is positive', () => {
+		expect(resolveAxisDistribution([1, 100], ScatterAxisScale.Log)).toStrictEqual(
+			{ distribution: DistributionType.Logarithmic },
+		);
+	});
+
+	it('falls back from log to a symmetric log around the smallest magnitude when zero is present', () => {
+		expect(
+			resolveAxisDistribution([0, 0.05, 300], ScatterAxisScale.Log),
+		).toStrictEqual({
+			distribution: DistributionType.SymmetricLog,
+			asinhThreshold: 0.01,
+		});
+	});
+
+	it('is a symmetric log when asked, even with only positive values', () => {
+		expect(
+			resolveAxisDistribution([2, 300], ScatterAxisScale.SymLog),
+		).toStrictEqual({
+			distribution: DistributionType.SymmetricLog,
+			asinhThreshold: 1,
+		});
+	});
+
+	it('uses a unit threshold when nothing is positive', () => {
+		expect(
+			resolveAxisDistribution([0, -5], ScatterAxisScale.SymLog),
+		).toStrictEqual({
+			distribution: DistributionType.SymmetricLog,
+			asinhThreshold: 1,
+		});
+	});
+
+	describe('auto', () => {
+		it.each([
+			[
+				'positive values spanning three decades',
+				[1, 1000],
+				DistributionType.Logarithmic,
+			],
+			['positive values spanning less', [1, 999], DistributionType.Linear],
+			['a wide span that includes zero', [0, 1, 1e6], DistributionType.Linear],
+			['no finite values', [Number.NaN], DistributionType.Linear],
+		])('picks a scale for %s', (_, values, distribution) => {
+			expect(resolveAxisDistribution(values, ScatterAxisScale.Auto)).toStrictEqual(
+				{ distribution },
+			);
+		});
+
+		it('is the default', () => {
+			expect(resolveAxisDistribution([1, 1e4])).toStrictEqual({
+				distribution: DistributionType.Logarithmic,
+			});
+		});
+	});
+});
+
+describe('buildScatterConfig', () => {
+	const build = (
+		overrides: Partial<Parameters<typeof buildScatterConfig>[0]> = {},
+	): ReturnType<typeof buildScatterConfig> =>
+		buildScatterConfig({
+			id: 'scatter',
+			series: SERIES,
+			isDarkMode: true,
+			x: { unit: 'reqps' },
+			y: { unit: 'ms', scale: ScatterAxisScale.Log },
+			...overrides,
+		});
+
+	it('draws a line along both plot edges', () => {
+		const [xAxis, yAxis] = build().getConfig().axes ?? [];
+
+		expect(xAxis?.border?.show).toBe(true);
+		expect(yAxis?.border?.show).toBe(true);
+	});
+
+	it('titles each axis with its label, and leaves an unlabelled one bare', () => {
+		const config = build({
+			x: { unit: 'reqps', label: 'Throughput' },
+			y: { unit: 'ms', label: '' },
+		}).getConfig();
+		const [xAxis, yAxis] = config.axes ?? [];
+
+		expect(xAxis?.label).toBe('Throughput');
+		expect(yAxis?.label).toBeUndefined();
+	});
+
+	it('emits a faceted plot with two value scales', () => {
+		const config = build().getConfig();
+
+		expect(config.mode).toBe(2);
+		expect(config.scales?.x).toMatchObject({ time: false, distr: 1 });
+		// The y column has a 0, so log becomes the symmetric variant.
+		expect(config.scales?.y).toMatchObject({ time: false, distr: 4 });
+	});
+
+	it('draws one faceted series per group with the plugin path builder', () => {
+		const config = build().getConfig();
+		const [, cart, checkout] = config.series ?? [];
+
+		expect(config.series).toHaveLength(3);
+		expect(cart).toMatchObject({
+			label: 'cart',
+			facets: [
+				{ scale: 'x', auto: true },
+				{ scale: 'y', auto: true },
+			],
+		});
+		expect(typeof cart?.paths).toBe('function');
+		expect(cart?.paths).toBe(checkout?.paths);
+		expect(cart?.points?.show).toBe(false);
+	});
+
+	it('formats both axes with their units', () => {
+		const config = build().getConfig();
+		const [xAxis, yAxis] = config.axes ?? [];
+
+		expect(xAxis).toMatchObject({ scale: 'x', side: 2, space: 90 });
+		expect(yAxis).toMatchObject({ scale: 'y', side: 3 });
+		expect(typeof xAxis?.values).toBe('function');
+		expect(typeof yAxis?.values).toBe('function');
+	});
+
+	it('registers a y threshold draw hook when thresholds are given', () => {
+		const config = build({
+			thresholds: [{ thresholdValue: 300, thresholdUnit: 'ms' }],
+		}).getConfig();
+
+		expect(config.hooks?.draw).toHaveLength(1);
+		expect(build().getConfig().hooks?.draw).toBeUndefined();
+	});
+});

frontend/src/lib/visualization/charts/Scatter/scatterRange.ts

@@ -0,0 +1,108 @@
+import { DistributionType } from 'lib/uPlotV2/config/types';
+import uPlot from 'uplot';
+
+import type { AxisDistribution } from './utils';
+
+interface ScaleTransform {
+	forward: (value: number) => number;
+	inverse: (position: number) => number;
+}
+
+/** The space uPlot lays the scale out in, so a pixel margin is the same size along it. */
+function getScaleTransform({
+	distribution,
+	asinhThreshold = 1,
+}: AxisDistribution): ScaleTransform {
+	switch (distribution) {
+		case DistributionType.Logarithmic:
+			return {
+				forward: (value): number => Math.log10(value),
+				inverse: (position): number => 10 ** position,
+			};
+		case DistributionType.SymmetricLog:
+			return {
+				forward: (value): number => Math.asinh(value / asinhThreshold),
+				inverse: (position): number => Math.sinh(position) * asinhThreshold,
+			};
+		default:
+			return {
+				forward: (value): number => value,
+				inverse: (position): number => position,
+			};
+	}
+}
+
+/** Half the span a single value spreads to, in transformed units. */
+const SINGLE_VALUE_HALF_SPAN = 0.5;
+
+/** The data's extent stretched to the soft limits; null with neither. */
+function resolveExtent(
+	dataMin: number | null,
+	dataMax: number | null,
+	softMin: number | null | undefined,
+	softMax: number | null | undefined,
+): [number, number] | null {
+	const lows = [dataMin, softMin].filter(
+		(value): value is number => value != null && Number.isFinite(value),
+	);
+	const highs = [dataMax, softMax].filter(
+		(value): value is number => value != null && Number.isFinite(value),
+	);
+	return lows.length > 0 && highs.length > 0
+		? [Math.min(...lows), Math.max(...highs)]
+		: null;
+}
+
+export interface ScatterRangeOptions extends AxisDistribution {
+	/** The axis this scale is laid out along. */
+	dimension: 'x' | 'y';
+	/** CSS pixels kept clear at each end so the largest dot draws whole. */
+	marginPx: number;
+	softMin?: number | null;
+	softMax?: number | null;
+}
+
+/**
+ * Fits the scale to the data and then widens it by `marginPx` at each end.
+ * uPlot clips series to the plot area, so a dot at the extreme value would
+ * otherwise lose the half that hangs past the edge. Log scales are left
+ * unsnapped: rounding out to the next power of ten after the margin can add a
+ * whole empty decade.
+ */
+export function createScatterRange({
+	dimension,
+	marginPx,
+	softMin,
+	softMax,
+	...distribution
+}: ScatterRangeOptions): uPlot.Scale.Range {
+	const transform = getScaleTransform(distribution);
+	const isLog = distribution.distribution === DistributionType.Logarithmic;
+
+	// A log scale cannot place a soft limit at or below zero.
+	const usableSoftMin = isLog && (softMin ?? 0) <= 0 ? null : softMin;
+
+	return (u, dataMin, dataMax): uPlot.Range.MinMax => {
+		const extent = resolveExtent(dataMin, dataMax, usableSoftMin, softMax);
+		if (!extent) {
+			return isLog ? [1, 10] : [0, 1];
+		}
+
+		let start = transform.forward(extent[0]);
+		let end = transform.forward(extent[1]);
+		if (start === end) {
+			start -= SINGLE_VALUE_HALF_SPAN;
+			end += SINGLE_VALUE_HALF_SPAN;
+		}
+
+		const plotPx =
+			(dimension === 'x' ? u.bbox.width : u.bbox.height) / uPlot.pxRatio;
+		if (plotPx > 2 * marginPx) {
+			const pad = ((end - start) * marginPx) / (plotPx - 2 * marginPx);
+			start -= pad;
+			end += pad;
+		}
+
+		return [transform.inverse(start), transform.inverse(end)];
+	};
+}

frontend/src/lib/visualization/charts/Scatter/utils.ts

@@ -0,0 +1,316 @@
+import { PrecisionOption } from 'components/Graph/types';
+import {
+	type AxisProps,
+	DistributionType,
+	DrawStyle,
+	SelectionPreferencesSource,
+} from 'lib/uPlotV2/config/types';
+import { UPlotConfigBuilder } from 'lib/uPlotV2/config/UPlotConfigBuilder';
+import { Threshold } from 'lib/uPlotV2/hooks/types';
+import {
+	applyScatterPlugin,
+	createScatterPlugin,
+	SCATTER_FACETS,
+} from 'lib/uPlotV2/plugins/ScatterPlugin/scatterPlugin';
+import {
+	DEFAULT_SCATTER_POINT_SIZE,
+	ScatterChartData,
+	ScatterPointSize,
+	ScatterSeriesData,
+} from 'lib/uPlotV2/plugins/ScatterPlugin/types';
+import {
+	logScaleSplits,
+	spacedLogLabels,
+} from 'lib/uPlotV2/utils/logGridSplits';
+import { adjustSoftLimitsWithThresholds } from 'lib/uPlotV2/utils/scale';
+import uPlot from 'uplot';
+
+import { createScatterRange } from './scatterRange';
+
+/** Circle outline; the fill carries the colour. */
+const POINT_STROKE_WIDTH = 1;
+
+/** Unit-suffixed x labels are wider than uPlot's 50px default assumes. */
+const X_AXIS_TICK_SPACE_PX = 90;
+const X_AXIS_END_LABEL_PADDING_PX = 40;
+
+export interface ScatterSeries {
+	/** Group label, as the legend names it. */
+	label: string;
+	xs: number[];
+	ys: number[];
+	/** Optional third channel, in the caller's units. */
+	sizes?: Array<number | null>;
+}
+
+export enum ScatterAxisScale {
+	/** Log when the values are positive and span several decades, else linear. */
+	Auto = 'auto',
+	Linear = 'linear',
+	Log = 'log',
+	/** Log-like, but places zero and negatives. */
+	SymLog = 'symlog',
+}
+
+/** Decades of positive values `auto` needs before it picks a log axis. */
+export const AUTO_LOG_MIN_DECADES = 3;
+
+export interface ScatterAxisOptions {
+	/** Axis title. */
+	label?: string;
+	unit?: string;
+	softMin?: number | null;
+	softMax?: number | null;
+	scale?: ScatterAxisScale;
+}
+
+export interface BuildScatterConfigArgs {
+	id: string;
+	series: ScatterSeries[];
+	isDarkMode: boolean;
+	x: ScatterAxisOptions;
+	y: ScatterAxisOptions;
+	pointSize?: ScatterPointSize;
+	/** 0–1. */
+	fillOpacity?: number;
+	colorMapping?: Record<string, string>;
+	/** Drawn on the y axis. */
+	thresholds?: Threshold[];
+	decimalPrecision?: PrecisionOption;
+	selectionPreferencesSource?: SelectionPreferencesSource;
+	shouldSaveSelectionPreference?: boolean;
+}
+
+/**
+ * The dot under the cursor, read off uPlot's cursor: the scatter plugin's
+ * `dataIdx` answers only for the hit series, so its index is the one set.
+ */
+export function getCursorHit(
+	plot: uPlot,
+): { seriesIndex: number; dataIndex: number } | null {
+	const idxs = plot.cursor.idxs ?? [];
+	for (let seriesIndex = 1; seriesIndex < idxs.length; seriesIndex++) {
+		const dataIndex = idxs[seriesIndex];
+		if (dataIndex != null) {
+			return { seriesIndex, dataIndex };
+		}
+	}
+	return null;
+}
+
+/** `[null, [xs, ys, sizes?], …]`: uPlot's faceted layout, series 0 empty. */
+export function prepareScatterChartData(
+	series: ScatterSeries[],
+): uPlot.AlignedData {
+	const data: ScatterChartData = [
+		null,
+		...series.map(
+			(entry): ScatterSeriesData =>
+				entry.sizes ? [entry.xs, entry.ys, entry.sizes] : [entry.xs, entry.ys],
+		),
+	];
+	return data as unknown as uPlot.AlignedData;
+}
+
+export interface AxisDistribution {
+	distribution: DistributionType;
+	asinhThreshold?: number;
+}
+
+function getPositiveRange(values: number[]): {
+	minPositive: number;
+	maxPositive: number;
+	hasNonPositive: boolean;
+} {
+	let minPositive = Infinity;
+	let maxPositive = -Infinity;
+	let hasNonPositive = false;
+	for (const value of values) {
+		if (!Number.isFinite(value)) {
+			continue;
+		}
+		if (value <= 0) {
+			hasNonPositive = true;
+		} else {
+			minPositive = Math.min(minPositive, value);
+			maxPositive = Math.max(maxPositive, value);
+		}
+	}
+	return { minPositive, maxPositive, hasNonPositive };
+}
+
+/**
+ * The symmetric log's linear band ends at the smallest non-zero magnitude, so
+ * the small values still spread out.
+ */
+function symmetricLogDistribution(minPositive: number): AxisDistribution {
+	const asinhThreshold = Number.isFinite(minPositive)
+		? 10 ** Math.floor(Math.log10(minPositive))
+		: 1;
+	return { distribution: DistributionType.SymmetricLog, asinhThreshold };
+}
+
+/**
+ * A plain log axis cannot place zero or negatives, so `log` falls back to the
+ * symmetric log rather than lose those points; callers that would rather drop
+ * them filter first.
+ */
+export function resolveAxisDistribution(
+	values: number[],
+	scale: ScatterAxisScale = ScatterAxisScale.Auto,
+): AxisDistribution {
+	const { minPositive, maxPositive, hasNonPositive } = getPositiveRange(values);
+	switch (scale) {
+		case ScatterAxisScale.Linear:
+			return { distribution: DistributionType.Linear };
+		case ScatterAxisScale.SymLog:
+			return symmetricLogDistribution(minPositive);
+		case ScatterAxisScale.Log:
+			return hasNonPositive
+				? symmetricLogDistribution(minPositive)
+				: { distribution: DistributionType.Logarithmic };
+		case ScatterAxisScale.Auto:
+		default: {
+			const spansDecades =
+				Number.isFinite(minPositive) &&
+				Math.log10(maxPositive / minPositive) >= AUTO_LOG_MIN_DECADES;
+			return !hasNonPositive && spansDecades
+				? { distribution: DistributionType.Logarithmic }
+				: { distribution: DistributionType.Linear };
+		}
+	}
+}
+
+/** The scatter range is unsnapped, so a log axis places and labels its own ticks. */
+function getLogAxisTicks({
+	distribution,
+}: AxisDistribution): Pick<AxisProps, 'splits' | 'filter'> {
+	return distribution === DistributionType.Logarithmic
+		? { splits: logScaleSplits, filter: spacedLogLabels }
+		: {};
+}
+
+export function buildScatterConfig({
+	id,
+	series,
+	isDarkMode,
+	x,
+	y,
+	pointSize = DEFAULT_SCATTER_POINT_SIZE,
+	fillOpacity,
+	colorMapping = {},
+	thresholds,
+	decimalPrecision,
+	selectionPreferencesSource,
+	shouldSaveSelectionPreference,
+}: BuildScatterConfigArgs): UPlotConfigBuilder {
+	const builder = new UPlotConfigBuilder({
+		id,
+		selectionPreferencesSource,
+		shouldSaveSelectionPreference,
+	});
+
+	const plugin = createScatterPlugin({ pointSize });
+	applyScatterPlugin(builder, plugin);
+	// The last x label is centred on the plot's right edge; room for its unit.
+	builder.setPadding([16, X_AXIS_END_LABEL_PADDING_PX, 8, 8]);
+
+	const xDistribution = resolveAxisDistribution(
+		series.flatMap((entry) => entry.xs),
+		x.scale,
+	);
+	const yDistribution = resolveAxisDistribution(
+		series.flatMap((entry) => entry.ys),
+		y.scale,
+	);
+
+	const yThresholds =
+		thresholds && thresholds.length > 0
+			? { scaleKey: 'y', thresholds, yAxisUnit: y.unit }
+			: undefined;
+
+	// The largest disc drawn, plus its outline, kept clear of each plot edge.
+	const largestDiameter = series.some((entry) => entry.sizes)
+		? pointSize.max
+		: pointSize.fixed;
+	const marginPx = largestDiameter / 2 + POINT_STROKE_WIDTH;
+	const ySoftLimits = adjustSoftLimitsWithThresholds(
+		y.softMin ?? null,
+		y.softMax ?? null,
+		thresholds,
+		y.unit,
+	);
+
+	builder.addScale({
+		scaleKey: 'x',
+		time: false,
+		softMin: x.softMin ?? undefined,
+		softMax: x.softMax ?? undefined,
+		range: createScatterRange({
+			dimension: 'x',
+			marginPx,
+			softMin: x.softMin,
+			softMax: x.softMax,
+			...xDistribution,
+		}),
+		...xDistribution,
+	});
+	builder.addScale({
+		scaleKey: 'y',
+		time: false,
+		softMin: y.softMin ?? undefined,
+		softMax: y.softMax ?? undefined,
+		thresholds: yThresholds,
+		range: createScatterRange({
+			dimension: 'y',
+			marginPx,
+			...ySoftLimits,
+			...yDistribution,
+		}),
+		...yDistribution,
+	});
+
+	builder.addAxis({
+		scaleKey: 'x',
+		side: 2,
+		label: x.label || undefined,
+		isDarkMode,
+		isTimeAxis: false,
+		yAxisUnit: x.unit ?? '',
+		decimalPrecision,
+		isLogScale: xDistribution.distribution !== DistributionType.Linear,
+		...getLogAxisTicks(xDistribution),
+		space: X_AXIS_TICK_SPACE_PX,
+	});
+	builder.addAxis({
+		scaleKey: 'y',
+		side: 3,
+		label: y.label || undefined,
+		isDarkMode,
+		yAxisUnit: y.unit ?? '',
+		decimalPrecision,
+		isLogScale: yDistribution.distribution !== DistributionType.Linear,
+		...getLogAxisTicks(yDistribution),
+	});
+
+	series.forEach((entry) => {
+		builder.addSeries({
+			scaleKey: 'y',
+			label: entry.label,
+			colorMapping,
+			drawStyle: DrawStyle.Scatter,
+			pathBuilder: plugin.pathBuilder,
+			facets: SCATTER_FACETS,
+			lineWidth: POINT_STROKE_WIDTH,
+			pointSize: pointSize.fixed,
+			fillOpacity,
+			isDarkMode,
+		});
+	});
+
+	if (yThresholds) {
+		builder.addThresholds(yThresholds);
+	}
+
+	return builder;
+}

frontend/src/lib/visualization/charts/types.ts

@@ -9,6 +9,10 @@ import {
 	TooltipRenderArgs,
 } from 'lib/uPlotV2/components/types';
 import { UPlotConfigBuilder } from 'lib/uPlotV2/config/UPlotConfigBuilder';
+import type {
+	ScatterChannels,
+	ScatterPointLabel,
+} from 'lib/uPlotV2/plugins/ScatterPlugin/types';
 import {
 	DashboardCursorSync,
 	SyncTooltipFilterMode,
@@ -74,6 +78,27 @@ export interface HistogramChartProps extends ChartWrapperProps {
 	isQueriesMerged?: boolean;
 }
 
+/** The dot a click landed on; `seriesIndex` is uPlot's, so the first series is 1. */
+export interface ScatterPointClick {
+	seriesIndex: number;
+	dataIndex: number;
+	/** The series' drawn colour. */
+	color: string;
+	/** Viewport coordinates of the click. */
+	coordinates: { x: number; y: number };
+}
+
+/** `data` is mode-2 (`prepareScatterChartData`); `config` comes from `buildScatterConfig`. */
+export interface ScatterChartProps extends ChartWrapperProps {
+	channels: ScatterChannels;
+	resolvePointLabels?: (
+		seriesIndex: number,
+		dataIndex: number,
+	) => ScatterPointLabel[];
+	/** Fires for a click on a dot; a click on empty plot space fires nothing. */
+	onPointClick?: (click: ScatterPointClick) => void;
+}
+
 /**
  * One resolved pie/donut slice: a display label, its (already parsed) positive
  * numeric value, and the colour used for the arc + legend swatch.

frontend/src/pages/AlertList/AlertList.styles.scss

@@ -1,29 +1,4 @@
 .alerts-container {
-	// Hands the page height down to the active tab so its content can bound itself
-	// instead of guessing with 100vh. Child combinators only, nested Tabs
-	// (Configuration) must not be caught.
-	flex: 1;
-	min-height: 0;
-
-	> .ant-tabs-content-holder {
-		display: flex;
-		flex-direction: column;
-
-		> .ant-tabs-content {
-			flex: 1;
-			min-height: 0;
-			display: flex;
-			flex-direction: column;
-
-			> .ant-tabs-tabpane-active {
-				flex: 1;
-				min-height: 0;
-				display: flex;
-				flex-direction: column;
-			}
-		}
-	}
-
 	.top-level-tab.periscope-tab {
 		padding: 2px 0;
 	}
@@ -65,9 +40,5 @@
 
 	.alert-rules-container {
 		margin-top: 10px;
-		flex: 1;
-		min-height: 0;
-		display: flex;
-		flex-direction: column;
 	}
 }

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

@@ -8,6 +8,7 @@
 	background-color: var(--l1-background);
 	overflow-y: auto;
 	overflow-x: hidden;
+	scrollbar-gutter: stable;
 	padding-bottom: 44px;
 
 	@include custom-scrollbar;
@@ -42,11 +43,12 @@
 
 .eyebrow {
 	display: block;
-	font-size: 11px;
-	font-weight: 600;
-	padding: 16px;
-	letter-spacing: 0.06em;
-	color: var(--l1-foreground);
+	padding: 18px 20px 12px;
+	font-family: 'Geist Mono', monospace;
+	font-size: 12px;
+	letter-spacing: 0.1em;
+	text-transform: uppercase;
+	color: var(--l2-foreground);
 }
 
 .group {
@@ -73,9 +75,5 @@
 .sections {
 	display: flex;
 	flex-direction: column;
-
-	& > * {
-		padding: 0 16px;
-		border-top: 1px solid var(--l1-border);
-	}
+	border-bottom: 1px solid var(--l1-border);
 }

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

@@ -1,3 +1,4 @@
+import { useMemo } from 'react';
 import { Input } from 'antd';
 import { Typography } from '@signozhq/ui/typography';
 import type {
@@ -7,6 +8,7 @@ import type {
 import { getPanelDefinition } from 'pages/DashboardPage/DashboardContainer/Panels/registry';
 import { SectionKind } from 'pages/DashboardPage/DashboardContainer/Panels/types/sections';
 import { getSupportedSignals } from 'pages/DashboardPage/DashboardContainer/Panels/capabilities';
+import { buildPluginSpec } from 'pages/DashboardPage/DashboardContainer/Panels/utils/buildPluginSpec';
 import { resolveSignal } from 'pages/DashboardPage/DashboardContainer/Panels/utils/getBuilderQueries';
 import type { EQueryType } from 'types/common/dashboard';
 
@@ -25,6 +27,7 @@ interface ConfigPaneProps {
 	onChangeSpec: (next: DashboardtypesPanelSpecDTO) => void;
 	/** Switch the panel to another visualization kind. */
 	onChangePanelKind: (kind: PanelKind) => void;
+	originalPanelKind?: PanelKind;
 	/**
 	 * Active query type from the query-builder provider (the selected tab). Drives which
 	 * panel types the visualization switcher disables — read from the provider, not the
@@ -35,6 +38,8 @@ interface ConfigPaneProps {
 	legendSeries: LegendSeries[];
 	/** Table panel's resolved value columns, for the table-only editors. */
 	tableColumns: TableColumnOption[];
+	/** Group-by labels of a joined scalar result, for the scatter dimensions editor. */
+	groupColumns?: string[];
 	/** Query step interval (seconds), for the chart-appearance span-gaps floor. */
 	stepInterval?: number;
 	/**
@@ -57,9 +62,11 @@ function ConfigPane({
 	spec,
 	onChangeSpec,
 	onChangePanelKind,
+	originalPanelKind,
 	queryType,
 	legendSeries,
 	tableColumns,
+	groupColumns,
 	stepInterval,
 	panel,
 	panelId,
@@ -76,6 +83,11 @@ function ConfigPane({
 		(config) => config.kind !== SectionKind.PanelHeader,
 	);
 
+	const defaults = useMemo(
+		() => buildPluginSpec(definition.sections),
+		[definition],
+	);
+
 	const signal = resolveSignal(spec.queries, getSupportedSignals(panelKind)[0]);
 
 	// Title/description are just a slice of the spec — edit them through the same
@@ -120,11 +132,14 @@ function ConfigPane({
 						config={headerSection}
 						spec={spec}
 						onChangeSpec={onChangeSpec}
+						defaults={defaults}
 						legendSeries={legendSeries}
 						tableColumns={tableColumns}
+						groupColumns={groupColumns}
 						signal={signal}
 						panelKind={panelKind}
 						onChangePanelKind={onChangePanelKind}
+						originalPanelKind={originalPanelKind}
 						queryType={queryType}
 						stepInterval={stepInterval}
 						metricUnit={metricUnit}
@@ -144,11 +159,14 @@ function ConfigPane({
 									config={config}
 									spec={spec}
 									onChangeSpec={onChangeSpec}
+									defaults={defaults}
 									legendSeries={legendSeries}
 									tableColumns={tableColumns}
+									groupColumns={groupColumns}
 									signal={signal}
 									panelKind={panelKind}
 									onChangePanelKind={onChangePanelKind}
+									originalPanelKind={originalPanelKind}
 									queryType={queryType}
 									stepInterval={stepInterval}
 									metricUnit={metricUnit}

frontend/src/pages/DashboardPage/DashboardContainer/PanelEditor/ConfigPane/PanelTypeSwitcher/PanelTypeSwitcher.module.scss

@@ -1,6 +1,56 @@
-// Matches ConfigPane's `.field` so the switcher lines up with the title/description fields.
-.field {
+@use '../../../../../../styles/scrollbar' as *;
+
+.trigger {
+	display: flex;
+	align-items: center;
+	gap: 8px;
+	width: 100%;
+	padding: 5px 5px 5px 12px;
+	border: 1px solid var(--l2-border);
+	border-radius: 4px;
+	background: var(--l2-background);
+	font: inherit;
+	text-align: left;
+	cursor: pointer;
+
+	&:hover {
+		border-color: var(--l3-border);
+	}
+}
+
+.triggerIcon {
+	flex-shrink: 0;
+	color: var(--l2-foreground);
+}
+
+.triggerName {
+	flex: 1;
+	min-width: 0;
+	overflow: hidden;
+	color: var(--l1-foreground);
+	text-overflow: ellipsis;
+	white-space: nowrap;
+}
+
+.triggerAction {
+	display: inline-flex;
+	align-items: center;
+	gap: 6px;
+	padding: 4px 10px;
+	border-radius: 3px;
+	background: var(--l3-background);
+	color: var(--l2-foreground);
+	font-size: 12px;
+}
+
+.revert {
+	align-self: flex-start;
+}
+
+.drawerBody {
 	display: flex;
 	flex-direction: column;
-	gap: 8px;
+	min-height: 0;
+	overflow-y: auto;
+	@include custom-scrollbar;
 }

frontend/src/pages/DashboardPage/DashboardContainer/PanelEditor/ConfigPane/PanelTypeSwitcher/PanelTypeSwitcher.tsx

@@ -1,12 +1,17 @@
-import { Typography } from '@signozhq/ui/typography';
+import { useCallback, useState } from 'react';
+import { ArrowRightLeft, Undo2 } from '@signozhq/icons';
+import { Button } from '@signozhq/ui/button';
+import { DrawerWrapper } from '@signozhq/ui/drawer';
 import type { TelemetrytypesSignalDTO } from 'api/generated/services/sigNoz.schemas';
 import type { EQueryType } from 'types/common/dashboard';
 
+import PanelTypeBrowser from '../../../PanelsAndSectionsLayout/Panel/PanelTypeSelectionModal/PanelTypeBrowser';
+import { getPanelDefinition } from '../../../Panels/registry';
 import type { PanelKind } from '../../../Panels/types/panelKind';
-import ConfigSelect from '../controls/ConfigSelect/ConfigSelect';
+import ConfigField from '../controls/ConfigField/ConfigField';
 
 import styles from './PanelTypeSwitcher.module.scss';
-import { usePanelTypeSelectItems } from './usePanelTypeSelectItems';
+import { getPanelTypeDisabledReason } from './utils';
 
 interface PanelTypeSwitcherProps {
 	/** The current panel kind (selected value). */
@@ -15,33 +20,96 @@ interface PanelTypeSwitcherProps {
 	queryType: EQueryType;
 	/** Panel's current signal — also gates the disabled rule (List needs logs/traces, not metrics). */
 	signal?: TelemetrytypesSignalDTO;
+	/** Kind the panel was opened with; a revert button appears once it differs. */
+	originalPanelKind?: PanelKind;
 	onChange: (kind: PanelKind) => void;
 }
 
 /**
- * Visualization-type selector (rendered inside the Visualization section). A type is
- * disabled when the active query type or signal is incompatible with it — resolved
- * through the capabilities guard. The signal is unknown for PromQL/ClickHouse, but
- * those query types still disable kinds that only support Query Builder (e.g. List).
+ * Visualization-type selector (rendered inside the Visualization section): opens the
+ * panel type browser in a drawer. A type is disabled when the active query type or
+ * signal is incompatible with it — resolved through the capabilities guard.
  */
 function PanelTypeSwitcher({
 	panelKind,
 	queryType,
 	signal,
+	originalPanelKind,
 	onChange,
 }: PanelTypeSwitcherProps): JSX.Element {
-	const items = usePanelTypeSelectItems({ queryType, signal });
+	const [isOpen, setIsOpen] = useState(false);
+	const { displayName, icon: Icon } = getPanelDefinition(panelKind);
+
+	const getDisabledReason = useCallback(
+		(kind: PanelKind): string | undefined =>
+			getPanelTypeDisabledReason({
+				kind,
+				queryType,
+				signal,
+				label: getPanelDefinition(kind).displayName,
+			}),
+		[queryType, signal],
+	);
+
+	const canRevert = !!originalPanelKind && originalPanelKind !== panelKind;
+	const revertBlockedReason = canRevert
+		? getDisabledReason(originalPanelKind)
+		: undefined;
+
+	const handleSelect = (kind: PanelKind): void => {
+		setIsOpen(false);
+		if (kind !== panelKind) {
+			onChange(kind);
+		}
+	};
 
 	return (
-		<div className={styles.field}>
-			<Typography.Text>Panel Type</Typography.Text>
-			<ConfigSelect
-				testId="panel-editor-v2-type-switcher"
-				value={panelKind}
-				items={items}
-				onChange={(value): void => onChange(value)}
-			/>
-		</div>
+		<ConfigField label="Panel type">
+			<button
+				type="button"
+				className={styles.trigger}
+				onClick={(): void => setIsOpen(true)}
+				data-testid="panel-editor-v2-type-switcher"
+			>
+				<Icon size={14} className={styles.triggerIcon} />
+				<span className={styles.triggerName}>{displayName}</span>
+				<span className={styles.triggerAction}>
+					<ArrowRightLeft size={14} />
+					Change
+				</span>
+			</button>
+			{canRevert && (
+				<Button
+					variant="link"
+					color="primary"
+					size="sm"
+					prefix={<Undo2 />}
+					className={styles.revert}
+					disabled={!!revertBlockedReason}
+					title={revertBlockedReason}
+					onClick={(): void => onChange(originalPanelKind)}
+					testId="panel-editor-v2-type-revert"
+				>
+					Revert to {getPanelDefinition(originalPanelKind).displayName}
+				</Button>
+			)}
+			<DrawerWrapper
+				open={isOpen}
+				onOpenChange={setIsOpen}
+				title="Change panel type"
+				subTitle="Pick a visualization for this panel."
+				direction="right"
+				width="wide"
+				testId="panel-type-switcher-drawer"
+				drawerDescriptionProps={{ className: styles.drawerBody }}
+			>
+				<PanelTypeBrowser
+					selectedKind={panelKind}
+					onSelect={handleSelect}
+					getDisabledReason={getDisabledReason}
+				/>
+			</DrawerWrapper>
+		</ConfigField>
 	);
 }
 

frontend/src/pages/DashboardPage/DashboardContainer/PanelEditor/ConfigPane/PanelTypeSwitcher/__tests__/PanelTypeSwitcher.test.tsx

@@ -1,22 +1,30 @@
-import { fireEvent, render, screen } from '@testing-library/react';
+import { render, screen } from '@testing-library/react';
+import userEvent from '@testing-library/user-event';
+import { TooltipProvider } from '@signozhq/ui/tooltip';
 import { getPanelDefinition } from 'pages/DashboardPage/DashboardContainer/Panels/registry';
 
 import PanelTypeSwitcher from '../PanelTypeSwitcher';
 import { TelemetrytypesSignalDTO } from 'api/generated/services/sigNoz.schemas';
 import { EQueryType } from 'types/common/dashboard';
 
+const OPTIONS = [
+	{ kind: 'signoz/TimeSeriesPanel', displayName: 'Time Series' },
+	{ kind: 'signoz/NumberPanel', displayName: 'Number' },
+	{ kind: 'signoz/TablePanel', displayName: 'Table' },
+	{ kind: 'signoz/BarChartPanel', displayName: 'Bar Chart' },
+	{ kind: 'signoz/AreaChartPanel', displayName: 'Area' },
+	{ kind: 'signoz/PieChartPanel', displayName: 'Pie Chart' },
+	{ kind: 'signoz/HistogramPanel', displayName: 'Histogram' },
+	{ kind: 'signoz/ListPanel', displayName: 'List' },
+	{ kind: 'signoz/TextPanel', displayName: 'Text' },
+].map((option) => ({ ...option, icon: (): null => null }));
+
 // Stub the registry so the test doesn't pull in the real renderers and chart libs.
 jest.mock('pages/DashboardPage/DashboardContainer/Panels/registry', () => ({
 	getPanelDefinition: jest.fn(),
-	PANEL_OPTIONS: [
-		{ kind: 'signoz/TimeSeriesPanel', displayName: 'Time Series' },
-		{ kind: 'signoz/NumberPanel', displayName: 'Number' },
-		{ kind: 'signoz/TablePanel', displayName: 'Table' },
-		{ kind: 'signoz/BarChartPanel', displayName: 'Bar Chart' },
-		{ kind: 'signoz/PieChartPanel', displayName: 'Pie Chart' },
-		{ kind: 'signoz/HistogramPanel', displayName: 'Histogram' },
-		{ kind: 'signoz/ListPanel', displayName: 'List' },
-	].map((option) => ({ ...option, icon: (): null => null })),
+	get PANEL_OPTIONS(): unknown {
+		return OPTIONS;
+	},
 }));
 
 const mockGetPanelDefinition = getPanelDefinition as unknown as jest.Mock;
@@ -28,14 +36,34 @@ const SUPPORTED_QUERY_TYPES: Record<string, EQueryType[]> = {
 	'signoz/PieChartPanel': [EQueryType.QUERY_BUILDER, EQueryType.CLICKHOUSE],
 };
 
-function disabledLabels(): (string | null)[] {
-	return Array.from(
-		document.querySelectorAll('.ant-select-item-option-disabled'),
-	).map((el) => el.textContent);
+type User = ReturnType<typeof userEvent.setup>;
+
+async function renderSwitcher(
+	props: Partial<Parameters<typeof PanelTypeSwitcher>[0]> = {},
+): Promise<{ onChange: jest.Mock; user: User }> {
+	// The open drawer sets `pointer-events: none` on the body.
+	const user = userEvent.setup({ pointerEventsCheck: 0 });
+	const onChange = jest.fn();
+	render(
+		<TooltipProvider>
+			<PanelTypeSwitcher
+				panelKind="signoz/TimeSeriesPanel"
+				queryType={EQueryType.QUERY_BUILDER}
+				onChange={onChange}
+				{...props}
+			/>
+		</TooltipProvider>,
+	);
+	await user.click(screen.getByTestId('panel-editor-v2-type-switcher'));
+	return { onChange, user };
 }
 
-function openDropdown(): void {
-	fireEvent.mouseDown(screen.getByRole('combobox'));
+function disabledKinds(): (string | undefined)[] {
+	return Array.from(
+		document.querySelectorAll('[data-testid^="panel-type-signoz/"]'),
+	)
+		.filter((el) => el.getAttribute('aria-disabled') === 'true')
+		.map((el) => el.getAttribute('data-testid')?.replace('panel-type-', ''));
 }
 
 describe('PanelTypeSwitcher', () => {
@@ -44,7 +72,8 @@ describe('PanelTypeSwitcher', () => {
 		// List supports only logs/traces; every other kind also supports metrics.
 		// Query-type support comes from SUPPORTED_QUERY_TYPES (all three by default).
 		mockGetPanelDefinition.mockImplementation((kind: string) => ({
-			mode: 'query',
+			...OPTIONS.find((option) => option.kind === kind),
+			mode: kind === 'signoz/TextPanel' ? 'static' : 'query',
 			supportedSignals:
 				kind === 'signoz/ListPanel'
 					? ['logs', 'traces']
@@ -57,83 +86,94 @@ describe('PanelTypeSwitcher', () => {
 		}));
 	});
 
-	it('fires onChange with the chosen plugin kind', () => {
-		const onChange = jest.fn();
-		render(
-			<PanelTypeSwitcher
-				panelKind="signoz/TimeSeriesPanel"
-				queryType={EQueryType.QUERY_BUILDER}
-				onChange={onChange}
-			/>,
-		);
+	it('shows the current type and switches to the chosen one', async () => {
+		const { onChange, user } = await renderSwitcher();
 
-		openDropdown();
-		fireEvent.click(screen.getByText('List'));
+		expect(screen.getByTestId('panel-editor-v2-type-switcher')).toHaveTextContent(
+			'Time SeriesChange',
+		);
+		await user.click(screen.getByTestId('panel-type-signoz/ListPanel'));
 
 		expect(onChange).toHaveBeenCalledWith('signoz/ListPanel');
 	});
 
-	it('disables types whose supported signals exclude the current signal', () => {
-		render(
-			<PanelTypeSwitcher
-				panelKind="signoz/TimeSeriesPanel"
-				queryType={EQueryType.QUERY_BUILDER}
-				signal={TelemetrytypesSignalDTO.metrics}
-				onChange={jest.fn()}
-			/>,
-		);
+	it('does not fire onChange when the current type is picked again', async () => {
+		const { onChange, user } = await renderSwitcher();
 
-		openDropdown();
-		// List can't render a metrics query, so it's disabled; Time Series stays enabled.
-		expect(disabledLabels()).toContain('List');
-		expect(disabledLabels()).not.toContain('Time Series');
+		await user.click(screen.getByTestId('panel-type-signoz/TimeSeriesPanel'));
+
+		expect(onChange).not.toHaveBeenCalled();
 	});
 
-	it('does not disable any type when the signal is unknown (builder, no signal)', () => {
-		render(
-			<PanelTypeSwitcher
-				panelKind="signoz/TimeSeriesPanel"
-				queryType={EQueryType.QUERY_BUILDER}
-				onChange={jest.fn()}
-			/>,
-		);
+	it('disables types whose supported signals exclude the current signal', async () => {
+		const { onChange, user } = await renderSwitcher({
+			signal: TelemetrytypesSignalDTO.metrics,
+		});
 
-		openDropdown();
-		expect(
-			document.querySelectorAll('.ant-select-item-option-disabled'),
-		).toHaveLength(0);
+		expect(disabledKinds()).toStrictEqual(['signoz/ListPanel']);
+		await user.click(screen.getByTestId('panel-type-signoz/ListPanel'));
+		expect(onChange).not.toHaveBeenCalled();
 	});
 
-	it('disables Query-Builder-only kinds under PromQL even without a signal', () => {
-		render(
-			<PanelTypeSwitcher
-				panelKind="signoz/TimeSeriesPanel"
-				queryType={EQueryType.PROM}
-				onChange={jest.fn()}
-			/>,
-		);
+	it('does not disable any type when the signal is unknown (builder, no signal)', async () => {
+		await renderSwitcher();
 
-		openDropdown();
-		// List/Table/Pie can't be authored in PromQL; Time Series can.
-		expect(disabledLabels()).toContain('List');
-		expect(disabledLabels()).toContain('Table');
-		expect(disabledLabels()).toContain('Pie Chart');
-		expect(disabledLabels()).not.toContain('Time Series');
+		expect(disabledKinds()).toHaveLength(0);
 	});
 
-	it('disables List under ClickHouse while Table/Pie stay enabled', () => {
-		render(
-			<PanelTypeSwitcher
-				panelKind="signoz/TablePanel"
-				queryType={EQueryType.CLICKHOUSE}
-				onChange={jest.fn()}
-			/>,
-		);
+	it('disables Query-Builder-only kinds under PromQL even without a signal', async () => {
+		await renderSwitcher({ queryType: EQueryType.PROM });
 
-		openDropdown();
-		expect(disabledLabels()).toContain('List');
-		expect(disabledLabels()).not.toContain('Table');
-		expect(disabledLabels()).not.toContain('Pie Chart');
-		expect(disabledLabels()).not.toContain('Time Series');
+		expect(disabledKinds()).toStrictEqual(
+			expect.arrayContaining([
+				'signoz/ListPanel',
+				'signoz/TablePanel',
+				'signoz/PieChartPanel',
+			]),
+		);
+		expect(disabledKinds()).not.toContain('signoz/TimeSeriesPanel');
+		expect(disabledKinds()).not.toContain('signoz/TextPanel');
+	});
+
+	it('disables List under ClickHouse while Table/Pie stay enabled', async () => {
+		await renderSwitcher({
+			panelKind: 'signoz/TablePanel',
+			queryType: EQueryType.CLICKHOUSE,
+		});
+
+		expect(disabledKinds()).toStrictEqual(['signoz/ListPanel']);
+	});
+
+	describe('revert', () => {
+		it('is hidden while the type is the original one', async () => {
+			await renderSwitcher({ originalPanelKind: 'signoz/TimeSeriesPanel' });
+
+			expect(
+				screen.queryByTestId('panel-editor-v2-type-revert'),
+			).not.toBeInTheDocument();
+		});
+
+		it('switches back to the original type', async () => {
+			const { onChange, user } = await renderSwitcher({
+				panelKind: 'signoz/TablePanel',
+				originalPanelKind: 'signoz/TimeSeriesPanel',
+			});
+
+			const revert = screen.getByTestId('panel-editor-v2-type-revert');
+			expect(revert).toHaveTextContent('Revert to Time Series');
+			await user.click(revert);
+
+			expect(onChange).toHaveBeenCalledWith('signoz/TimeSeriesPanel');
+		});
+
+		it('is disabled when the original type no longer fits the query', async () => {
+			await renderSwitcher({
+				panelKind: 'signoz/TimeSeriesPanel',
+				originalPanelKind: 'signoz/ListPanel',
+				queryType: EQueryType.PROM,
+			});
+
+			expect(screen.getByTestId('panel-editor-v2-type-revert')).toBeDisabled();
+		});
 	});
 });

frontend/src/pages/DashboardPage/DashboardContainer/PanelEditor/ConfigPane/PanelTypeSwitcher/usePanelTypeSelectItems.tsx

@@ -18,8 +18,7 @@ interface UsePanelTypeSelectItemsArgs {
 /**
  * Visualization-kind options for a `ConfigSelect`, each disabled (with a reason
  * tooltip) when the active query type or signal is incompatible — resolved through
- * the capabilities guard. Shared by the editor's `PanelTypeSwitcher` and the View
- * modal's header so the two selectors apply the same rule and can't drift.
+ * the capabilities guard, the same rule the editor's `PanelTypeSwitcher` applies.
  */
 export function usePanelTypeSelectItems({
 	queryType,

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

@@ -6,16 +6,21 @@ import {
 	type SectionConfig,
 	SectionKind,
 } from 'pages/DashboardPage/DashboardContainer/Panels/types/sections';
+import type { SeededPluginSpec } from 'pages/DashboardPage/DashboardContainer/Panels/utils/buildPluginSpec';
 
 import type { SectionEditorContext } from '../sectionContext';
-import { resolveSectionEditor } from '../sectionRegistry';
+import { getSectionDefault, resolveSectionEditor } from '../sectionRegistry';
 import SettingsSection from '../SettingsSection/SettingsSection';
+import { isChanged } from '../utils/changes';
+import { getSizeColumnLabel } from '../utils/sizeColumnLabel';
 import SectionHeaderQuickAdd from './SectionHeaderQuickAdd';
 
 type SectionSlotProps = {
 	config: SectionConfig;
 	spec: DashboardtypesPanelSpecDTO;
 	onChangeSpec: (next: DashboardtypesPanelSpecDTO) => void;
+	/** The kind's seeded plugin spec (`buildPluginSpec`). */
+	defaults: SeededPluginSpec;
 	/** Renders the editor alone, for a section promoted into the Panel Details fields. */
 	bare?: boolean;
 } & Omit<SectionEditorContext, 'yAxisUnit' | 'registerHeaderAction'>;
@@ -52,12 +57,15 @@ function SectionSlot({
 	config,
 	spec,
 	onChangeSpec,
+	defaults,
 	bare,
 	legendSeries,
 	tableColumns,
+	groupColumns,
 	signal,
 	panelKind,
 	onChangePanelKind,
+	originalPanelKind,
 	queryType,
 	stepInterval,
 	metricUnit,
@@ -65,7 +73,10 @@ function SectionSlot({
 	const editor = resolveSectionEditor(config.kind);
 	// Controlled so the header slot can expand on click; list sections open when populated.
 	const [open, setOpen] = useState(() => {
-		if (config.kind === SectionKind.Visualization) {
+		if (
+			config.kind === SectionKind.Visualization ||
+			config.kind === SectionKind.Dimensions
+		) {
 			return true;
 		}
 		const value = editor?.get(spec);
@@ -103,8 +114,10 @@ function SectionSlot({
 		return null;
 	}
 
-	const { title, icon: Icon } = SECTION_METADATA[config.kind];
-	const { Component, get, update } = editor;
+	const { title } = SECTION_METADATA[config.kind];
+	const { Component, get, update, summarize } = editor;
+	const value = get(spec);
+	const defaultValue = getSectionDefault(editor, spec, defaults);
 	// Atomic sections carry no `controls`; controlled ones do.
 	const controls = 'controls' in config ? config.controls : undefined;
 	// Forwarded to editors that scope to the panel's unit (e.g. the thresholds unit picker).
@@ -113,20 +126,28 @@ function SectionSlot({
 
 	const headerSlot = SECTION_HEADER_SLOT[config.kind]?.(triggerHeaderAction);
 
+	const context: SectionEditorContext = {
+		legendSeries,
+		yAxisUnit,
+		tableColumns,
+		groupColumns,
+		sizeColumnLabel: getSizeColumnLabel(spec, tableColumns),
+		signal,
+		panelKind,
+		onChangePanelKind,
+		originalPanelKind,
+		queryType,
+		stepInterval,
+		metricUnit,
+	};
+
 	const editorElement = (
 		<Component
-			value={get(spec)}
+			value={value}
+			defaultValue={defaultValue}
 			controls={controls}
 			onChange={(next): void => onChangeSpec(update(spec, next))}
-			legendSeries={legendSeries}
-			yAxisUnit={yAxisUnit}
-			tableColumns={tableColumns}
-			signal={signal}
-			panelKind={panelKind}
-			onChangePanelKind={onChangePanelKind}
-			queryType={queryType}
-			stepInterval={stepInterval}
-			metricUnit={metricUnit}
+			{...context}
 			registerHeaderAction={registerHeaderAction}
 		/>
 	);
@@ -138,7 +159,8 @@ function SectionSlot({
 	return (
 		<SettingsSection
 			title={title}
-			icon={<Icon size={15} />}
+			summary={summarize?.(value, controls, context)}
+			changed={isChanged(value, defaultValue)}
 			open={open}
 			onOpenChange={setOpen}
 			headerSlot={headerSlot}

frontend/src/pages/DashboardPage/DashboardContainer/PanelEditor/ConfigPane/SectionSlot/__tests__/SectionSlot.test.tsx

@@ -28,7 +28,12 @@ function Harness({ initial = [] }: { initial?: unknown[] } = {}): JSX.Element {
 		makeSpec(initial),
 	);
 	return (
-		<SectionSlot config={THRESHOLDS_CONFIG} spec={spec} onChangeSpec={setSpec} />
+		<SectionSlot
+			config={THRESHOLDS_CONFIG}
+			spec={spec}
+			defaults={{}}
+			onChangeSpec={setSpec}
+		/>
 	);
 }
 
@@ -70,3 +75,48 @@ describe('SectionSlot header action', () => {
 		expect(screen.getByTestId('threshold-value-0')).toBeInTheDocument();
 	});
 });
+
+describe('SectionSlot header summary', () => {
+	it('summarises a collapsed section and marks it changed', async () => {
+		const user = userEvent.setup();
+		render(
+			<Harness initial={[{ value: 80, color: '#F5B225', label: 'High' }]} />,
+		);
+
+		await user.click(screen.getByTestId('config-section-thresholds'));
+
+		expect(screen.getByText('1 threshold')).toBeInTheDocument();
+		expect(screen.getByTestId('config-changed-dot')).toBeInTheDocument();
+	});
+
+	it('shows no summary or changed marker for an untouched section', () => {
+		render(<Harness />);
+
+		expect(screen.queryByTestId('config-changed-dot')).not.toBeInTheDocument();
+		expect(screen.queryByText(/threshold$/)).not.toBeInTheDocument();
+	});
+});
+
+describe('SectionSlot rendered defaults', () => {
+	it('does not mark an explicit value that matches what unset renders as', () => {
+		const spec = {
+			display: { name: 'CPU' },
+			plugin: {
+				kind: 'signoz/TimeSeriesPanel',
+				spec: { formatting: { decimalPrecision: '2' } },
+			},
+			queries: [],
+		} as unknown as DashboardtypesPanelSpecDTO;
+
+		render(
+			<SectionSlot
+				config={{ kind: SectionKind.Formatting, controls: { decimals: true } }}
+				spec={spec}
+				defaults={{}}
+				onChangeSpec={jest.fn()}
+			/>,
+		);
+
+		expect(screen.queryByTestId('config-changed-dot')).not.toBeInTheDocument();
+	});
+});

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

@@ -1,51 +1,53 @@
+.section {
+	border-top: 1px solid var(--l1-border);
+}
+
 .header {
 	display: flex;
 	align-items: center;
 	gap: 6px;
-	width: 100%;
-	height: 44px;
+	padding: 0 20px 0 0;
+
+	&:hover {
+		background: var(--l2-background);
+	}
 }
 
-// Disclosure control (icon tile + title); fills the row so the action slot and chevron sit right.
 .toggle {
 	display: flex;
 	flex: 1;
 	align-items: center;
-	gap: 11px;
+	gap: 10px;
 	min-width: 0;
-	padding: 0 !important;
+	padding: 18px 0 18px 20px;
 	border: none;
 	background: transparent;
+	font: inherit;
 	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(--l3-foreground);
-	transition: all 0.15s ease;
-}
-
-.iconTileOpen {
-	background: color-mix(in srgb, var(--bg-robin-400) 14%, transparent);
-	color: var(--bg-robin-400);
 }
 
 .title {
+	font-size: 13px;
+	font-weight: 400;
+	white-space: nowrap;
+	color: var(--l1-foreground);
+}
+
+.summary {
 	flex: 1;
-	text-align: left;
-	font-weight: 600;
+	min-width: 0;
+	overflow: hidden;
+	font-size: 12px;
+	text-align: right;
+	white-space: nowrap;
+	text-overflow: ellipsis;
 	color: var(--l2-foreground);
 }
 
 .chevron {
+	flex: none;
+	color: var(--l3-foreground);
+	cursor: pointer;
 	transition: transform 0.15s ease;
 
 	&.open {
@@ -56,6 +58,6 @@
 .body {
 	display: flex;
 	flex-direction: column;
-	gap: 16px;
-	padding: 2px 0 18px;
+	gap: 26px;
+	padding: 4px 20px 26px;
 }

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

@@ -1,18 +1,20 @@
 import { type ReactNode, useState } from 'react';
 import { ChevronDown } from '@signozhq/icons';
-import { Button } from '@signozhq/ui/button';
-import { Typography } from '@signozhq/ui/typography';
 import cx from 'classnames';
 
+import ChangedDot from '../controls/ChangedDot/ChangedDot';
+
 import styles from './SettingsSection.module.scss';
 
 interface SettingsSectionProps {
 	title: string;
-	icon?: ReactNode;
 	defaultOpen?: boolean;
 	/** Controlled open state; when set, the section defers to `onOpenChange`. */
 	open?: boolean;
 	onOpenChange?: (open: boolean) => void;
+	/** One-line digest of the section's values, shown while collapsed. */
+	summary?: string;
+	changed?: boolean;
 	/** Rendered between the title and the chevron. */
 	headerSlot?: ReactNode;
 	children: ReactNode;
@@ -23,10 +25,11 @@ interface SettingsSectionProps {
  */
 function SettingsSection({
 	title,
-	icon,
 	defaultOpen = false,
 	open,
 	onOpenChange,
+	summary,
+	changed,
 	headerSlot,
 	children,
 }: SettingsSectionProps): JSX.Element {
@@ -51,30 +54,18 @@ function SettingsSection({
 					type="button"
 					className={styles.toggle}
 					aria-expanded={isOpen}
+					aria-label={isOpen ? `Collapse ${title}` : `Expand ${title}`}
 					data-testid={`config-section-${serializedTitle}`}
 					onClick={toggle}
 				>
-					{icon && (
-						<span className={cx(styles.iconTile, { [styles.iconTileOpen]: isOpen })}>
-							{icon}
-						</span>
-					)}
-					<Typography.Text className={styles.title}>{title}</Typography.Text>
+					<span className={styles.title}>{title}</span>
+					{changed && <ChangedDot title="Has changed settings" />}
+					<span className={styles.summary}>{isOpen ? '' : summary}</span>
 				</button>
 				{headerSlot}
-				<Button
-					type="button"
-					variant="ghost"
-					color="secondary"
-					size="icon"
-					prefix={
-						<ChevronDown
-							size={15}
-							className={cx(styles.chevron, { [styles.open]: isOpen })}
-						/>
-					}
-					aria-label={isOpen ? `Collapse ${title}` : `Expand ${title}`}
-					tabIndex={-1}
+				<ChevronDown
+					size={14}
+					className={cx(styles.chevron, { [styles.open]: isOpen })}
 					onClick={toggle}
 				/>
 			</div>

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

@@ -108,7 +108,7 @@ describe('ConfigPane', () => {
 
 		const toggle = screen.getByTestId('panel-header-hide');
 		expect(toggle).toBeInTheDocument();
-		expect(screen.getByText('Hide header')).toBeInTheDocument();
+		expect(screen.getByText('Hide panel header')).toBeInTheDocument();
 		// No collapsible wrapper of its own.
 		expect(screen.queryByText('Panel header')).not.toBeInTheDocument();
 	});

frontend/src/pages/DashboardPage/DashboardContainer/PanelEditor/ConfigPane/controls/AlignmentGrid/AlignmentGrid.module.scss

@@ -0,0 +1,80 @@
+.row {
+	display: flex;
+	align-items: center;
+	gap: 16px;
+}
+
+.grid {
+	display: grid;
+	flex: none;
+	grid-template-columns: repeat(3, 28px);
+	gap: 4px;
+	padding: 6px;
+	border: 1px solid var(--l1-border);
+	border-radius: 4px;
+	background: var(--l2-background);
+}
+
+.cell {
+	position: relative;
+	display: grid;
+	place-items: center;
+	width: 28px;
+	height: 22px;
+	padding: 0;
+	border: 1px solid transparent;
+	border-radius: 3px;
+	background: transparent;
+	cursor: pointer;
+
+	&:hover {
+		background: var(--l3-background);
+	}
+
+	&:has(:focus-visible) {
+		outline: 1px solid var(--bg-robin-500);
+	}
+}
+
+.input {
+	position: absolute;
+	inset: 0;
+	margin: 0;
+	opacity: 0;
+	cursor: pointer;
+}
+
+.mark {
+	width: 10px;
+	height: 3px;
+	border-radius: 2px;
+	background: var(--l3-foreground);
+}
+
+.selected {
+	border-color: var(--bg-robin-500);
+	background: color-mix(in srgb, var(--bg-robin-500) 12%, transparent);
+
+	.mark {
+		width: 14px;
+		background: var(--bg-robin-400);
+	}
+}
+
+.text {
+	display: flex;
+	flex-direction: column;
+	gap: 3px;
+	min-width: 0;
+}
+
+.label {
+	font-size: 14px;
+	color: var(--l1-foreground);
+}
+
+.description {
+	font-size: 12px;
+	line-height: 17px;
+	color: var(--l2-foreground);
+}

frontend/src/pages/DashboardPage/DashboardContainer/PanelEditor/ConfigPane/controls/AlignmentGrid/AlignmentGrid.tsx

@@ -0,0 +1,64 @@
+import { useId } from 'react';
+import cx from 'classnames';
+
+import { type Alignment, ALIGNMENT_CELLS, alignmentLabel } from './alignment';
+
+import styles from './AlignmentGrid.module.scss';
+
+interface AlignmentGridProps {
+	testId: string;
+	value: Alignment;
+	description?: string;
+	onChange: (next: Alignment) => void;
+}
+
+function AlignmentGrid({
+	testId,
+	value,
+	description,
+	onChange,
+}: AlignmentGridProps): JSX.Element {
+	const name = useId();
+
+	return (
+		<div className={styles.row}>
+			<div
+				role="radiogroup"
+				aria-label="Text position"
+				data-testid={testId}
+				className={styles.grid}
+			>
+				{ALIGNMENT_CELLS.map((cell) => {
+					const label = alignmentLabel(cell);
+					const selected =
+						cell.textAlign === value.textAlign &&
+						cell.verticalAlign === value.verticalAlign;
+					return (
+						<label
+							key={label}
+							title={label}
+							data-testid={`${testId}-${cell.verticalAlign}-${cell.textAlign}`}
+							className={cx(styles.cell, { [styles.selected]: selected })}
+						>
+							<input
+								type="radio"
+								className={styles.input}
+								name={name}
+								checked={selected}
+								aria-label={label}
+								onChange={(): void => onChange(cell)}
+							/>
+							<span className={styles.mark} />
+						</label>
+					);
+				})}
+			</div>
+			<div className={styles.text}>
+				<span className={styles.label}>{alignmentLabel(value)}</span>
+				{description && <span className={styles.description}>{description}</span>}
+			</div>
+		</div>
+	);
+}
+
+export default AlignmentGrid;

frontend/src/pages/DashboardPage/DashboardContainer/PanelEditor/ConfigPane/controls/AlignmentGrid/alignment.ts

@@ -0,0 +1,37 @@
+import {
+	DashboardtypesTextAlignDTO,
+	DashboardtypesVerticalAlignDTO,
+} from 'api/generated/services/sigNoz.schemas';
+
+const VERTICAL_LABELS: Record<DashboardtypesVerticalAlignDTO, string> = {
+	[DashboardtypesVerticalAlignDTO.top]: 'Top',
+	[DashboardtypesVerticalAlignDTO.center]: 'Middle',
+	[DashboardtypesVerticalAlignDTO.bottom]: 'Bottom',
+};
+
+const HORIZONTAL_LABELS: Record<DashboardtypesTextAlignDTO, string> = {
+	[DashboardtypesTextAlignDTO.left]: 'left',
+	[DashboardtypesTextAlignDTO.center]: 'center',
+	[DashboardtypesTextAlignDTO.right]: 'right',
+};
+
+export interface Alignment {
+	textAlign: DashboardtypesTextAlignDTO;
+	verticalAlign: DashboardtypesVerticalAlignDTO;
+}
+
+export const ALIGNMENT_CELLS: Alignment[] = Object.values(
+	DashboardtypesVerticalAlignDTO,
+).flatMap((verticalAlign) =>
+	Object.values(DashboardtypesTextAlignDTO).map((textAlign) => ({
+		textAlign,
+		verticalAlign,
+	})),
+);
+
+export function alignmentLabel({
+	textAlign,
+	verticalAlign,
+}: Alignment): string {
+	return `${VERTICAL_LABELS[verticalAlign]} ${HORIZONTAL_LABELS[textAlign]}`;
+}

frontend/src/pages/DashboardPage/DashboardContainer/PanelEditor/ConfigPane/controls/BackgroundSwatches/BackgroundSwatches.module.scss

@@ -1,7 +1,8 @@
 .row {
 	display: flex;
+	flex-wrap: wrap;
 	align-items: center;
-	gap: 6px;
+	gap: 8px 6px;
 }
 
 .swatch {

frontend/src/pages/DashboardPage/DashboardContainer/PanelEditor/ConfigPane/controls/BackgroundSwatches/BackgroundSwatches.tsx

@@ -8,31 +8,14 @@ import {
 } from 'pages/DashboardPage/DashboardContainer/Panels/kinds/TextPanel/background/presets';
 import type {
 	PanelTheme,
-	TextBackgroundPreset,
 	TextBackgroundSelection,
 } from 'pages/DashboardPage/DashboardContainer/Panels/kinds/TextPanel/background/types';
 import { TextBackgroundKind } from 'pages/DashboardPage/DashboardContainer/Panels/kinds/TextPanel/background/types';
 
+import { BASE_TITLES, type BaseSelection, PRESET_TITLES } from './titles';
+
 import styles from './BackgroundSwatches.module.scss';
 
-const PRESET_TITLES: Record<TextBackgroundPreset, string> = {
-	robin: 'Robin',
-	purple: 'Purple',
-	sakura: 'Sakura',
-	cherry: 'Cherry',
-	amber: 'Amber',
-	forest: 'Forest',
-	sienna: 'Sienna',
-	slate: 'Slate',
-};
-
-type BaseSelection = TextBackgroundKind.None | TextBackgroundKind.Default;
-
-const BASE_TITLES: Record<BaseSelection, string> = {
-	none: 'Transparent',
-	default: 'Default panel',
-};
-
 /** Neither base swatch shows a colour, so its tooltip says what it does. */
 const BASE_TOOLTIPS: Record<BaseSelection, string> = {
 	none: 'Transparent — no card, border or title bar',

frontend/src/pages/DashboardPage/DashboardContainer/PanelEditor/ConfigPane/controls/BackgroundSwatches/titles.ts

@@ -0,0 +1,38 @@
+import {
+	type ResolvedTextBackground,
+	TextBackgroundKind,
+	type TextBackgroundPreset,
+} from 'pages/DashboardPage/DashboardContainer/Panels/kinds/TextPanel/background/types';
+
+export const PRESET_TITLES: Record<TextBackgroundPreset, string> = {
+	robin: 'Robin',
+	purple: 'Purple',
+	sakura: 'Sakura',
+	cherry: 'Cherry',
+	amber: 'Amber',
+	forest: 'Forest',
+	sienna: 'Sienna',
+	slate: 'Slate',
+};
+
+export type BaseSelection =
+	| TextBackgroundKind.None
+	| TextBackgroundKind.Default;
+
+export const BASE_TITLES: Record<BaseSelection, string> = {
+	none: 'Transparent',
+	default: 'Default panel',
+};
+
+export function backgroundTitle(background: ResolvedTextBackground): string {
+	switch (background.kind) {
+		case TextBackgroundKind.Preset:
+			return background.preset ? PRESET_TITLES[background.preset] : 'Custom';
+		case TextBackgroundKind.Custom:
+			return `Custom ${background.surface?.toUpperCase() ?? ''}`.trim();
+		case TextBackgroundKind.None:
+			return BASE_TITLES.none;
+		default:
+			return BASE_TITLES.default;
+	}
+}

frontend/src/pages/DashboardPage/DashboardContainer/PanelEditor/ConfigPane/controls/ChangedDot/ChangedDot.module.scss

@@ -0,0 +1,7 @@
+.dot {
+	flex: none;
+	width: 6px;
+	height: 6px;
+	border-radius: 50%;
+	background: var(--bg-robin-500);
+}

frontend/src/pages/DashboardPage/DashboardContainer/PanelEditor/ConfigPane/controls/ChangedDot/ChangedDot.tsx

@@ -0,0 +1,18 @@
+import styles from './ChangedDot.module.scss';
+
+function ChangedDot({
+	title = 'Changed from default',
+}: {
+	title?: string;
+}): JSX.Element {
+	return (
+		<span
+			className={styles.dot}
+			title={title}
+			aria-label={title}
+			data-testid="config-changed-dot"
+		/>
+	);
+}
+
+export default ChangedDot;

frontend/src/pages/DashboardPage/DashboardContainer/PanelEditor/ConfigPane/controls/ConfigChips/ConfigChips.module.scss

@@ -0,0 +1,61 @@
+.chips {
+	min-width: 0;
+	margin: 0;
+	padding: 0;
+	border: 0;
+	display: flex;
+	flex-wrap: wrap;
+	gap: 8px;
+}
+
+.chip {
+	position: relative;
+	display: inline-flex;
+	align-items: center;
+	max-width: 100%;
+	height: 32px;
+	padding: 0 14px;
+	border: 1px solid var(--l1-border);
+	border-radius: 999px;
+	background: var(--l2-background);
+	color: var(--l2-foreground);
+	font-family: var(--font-mono, monospace);
+	font-size: 13px;
+	cursor: pointer;
+	transition:
+		border-color 150ms,
+		background 150ms;
+
+	&:hover {
+		border-color: var(--l2-border);
+	}
+
+	&:has(:focus-visible) {
+		outline: 1px solid var(--bg-robin-500);
+		outline-offset: 1px;
+	}
+}
+
+.input {
+	position: absolute;
+	inset: 0;
+	margin: 0;
+	opacity: 0;
+	cursor: pointer;
+}
+
+.selected {
+	border-color: var(--bg-robin-500);
+	background: color-mix(in srgb, var(--bg-robin-500) 12%, var(--l1-background));
+	color: var(--l1-foreground);
+
+	&:hover {
+		border-color: var(--bg-robin-500);
+	}
+}
+
+.label {
+	overflow: hidden;
+	white-space: nowrap;
+	text-overflow: ellipsis;
+}

frontend/src/pages/DashboardPage/DashboardContainer/PanelEditor/ConfigPane/controls/ConfigChips/ConfigChips.tsx

@@ -0,0 +1,68 @@
+import cx from 'classnames';
+
+import styles from './ConfigChips.module.scss';
+
+export interface ConfigChipItem<T extends string = string> {
+	value: T;
+	label: string;
+}
+
+interface ConfigChipsProps<T extends string> {
+	testId: string;
+	/** Selected values, kept in `items` order. */
+	value: T[];
+	items: ConfigChipItem<T>[];
+	onChange: (value: T[]) => void;
+	'aria-label'?: string;
+}
+
+/** Multi-choice toggle chips; any number may be on, including none. */
+function ConfigChips<T extends string>({
+	testId,
+	value,
+	items,
+	onChange,
+	'aria-label': ariaLabel,
+}: ConfigChipsProps<T>): JSX.Element {
+	const toggle = (item: T): void => {
+		const next = value.includes(item)
+			? value.filter((selected) => selected !== item)
+			: [...value, item];
+		onChange(
+			items
+				.map((candidate) => candidate.value)
+				.filter((candidate) => next.includes(candidate)),
+		);
+	};
+
+	return (
+		<fieldset
+			aria-label={ariaLabel}
+			data-testid={testId}
+			className={styles.chips}
+		>
+			{items.map((item) => {
+				const selected = value.includes(item.value);
+				return (
+					<label
+						key={item.value}
+						data-testid={`${testId}-${item.value}`}
+						className={cx(styles.chip, { [styles.selected]: selected })}
+						title={item.label}
+					>
+						<input
+							type="checkbox"
+							className={styles.input}
+							checked={selected}
+							aria-label={item.label}
+							onChange={(): void => toggle(item.value)}
+						/>
+						<span className={styles.label}>{item.label}</span>
+					</label>
+				);
+			})}
+		</fieldset>
+	);
+}
+
+export default ConfigChips;

frontend/src/pages/DashboardPage/DashboardContainer/PanelEditor/ConfigPane/controls/ConfigChips/__tests__/ConfigChips.test.tsx

@@ -0,0 +1,59 @@
+import { render, screen, userEvent } from 'tests/test-utils';
+
+import ConfigChips from '../ConfigChips';
+
+const ITEMS = [
+	{ value: 'a', label: 'alpha' },
+	{ value: 'b', label: 'beta' },
+	{ value: 'c', label: 'gamma' },
+];
+
+describe('ConfigChips', () => {
+	it('marks the selected chips as checked', () => {
+		render(
+			<ConfigChips
+				testId="chips"
+				value={['b']}
+				items={ITEMS}
+				onChange={jest.fn()}
+			/>,
+		);
+
+		expect(screen.getByRole('checkbox', { name: 'beta' })).toBeChecked();
+		expect(screen.getByRole('checkbox', { name: 'alpha' })).not.toBeChecked();
+	});
+
+	it('adds a chip in item order, not click order', async () => {
+		const user = userEvent.setup();
+		const onChange = jest.fn();
+		render(
+			<ConfigChips
+				testId="chips"
+				value={['c']}
+				items={ITEMS}
+				onChange={onChange}
+			/>,
+		);
+
+		await user.click(screen.getByTestId('chips-a'));
+
+		expect(onChange).toHaveBeenCalledWith(['a', 'c']);
+	});
+
+	it('removes a selected chip, down to none', async () => {
+		const user = userEvent.setup();
+		const onChange = jest.fn();
+		render(
+			<ConfigChips
+				testId="chips"
+				value={['a']}
+				items={ITEMS}
+				onChange={onChange}
+			/>,
+		);
+
+		await user.click(screen.getByTestId('chips-a'));
+
+		expect(onChange).toHaveBeenCalledWith([]);
+	});
+});

frontend/src/pages/DashboardPage/DashboardContainer/PanelEditor/ConfigPane/controls/ConfigField/ConfigField.module.scss

@@ -0,0 +1,48 @@
+.field {
+	display: flex;
+	flex-direction: column;
+	gap: 10px;
+	min-width: 0;
+}
+
+.header {
+	display: flex;
+	align-items: center;
+	justify-content: space-between;
+	gap: 8px;
+	min-height: 18px;
+}
+
+.label {
+	font-family: 'Geist Mono', monospace;
+	font-size: 12px;
+	letter-spacing: 0.1em;
+	text-transform: uppercase;
+	white-space: nowrap;
+	color: var(--l2-foreground);
+}
+
+.plainLabel {
+	font-size: 13px;
+	color: var(--l1-foreground);
+}
+
+.reset {
+	padding: 0;
+	border: 0;
+	background: transparent;
+	font: inherit;
+	font-size: 12px;
+	color: var(--bg-robin-400);
+	cursor: pointer;
+
+	&:hover {
+		color: var(--bg-robin-300);
+	}
+}
+
+.help {
+	font-size: 12px;
+	line-height: 17px;
+	color: var(--l2-foreground);
+}

frontend/src/pages/DashboardPage/DashboardContainer/PanelEditor/ConfigPane/controls/ConfigField/ConfigField.tsx

@@ -0,0 +1,48 @@
+import type { ReactNode } from 'react';
+import cx from 'classnames';
+
+import styles from './ConfigField.module.scss';
+
+interface ConfigFieldProps {
+	label: ReactNode;
+	/** Shown under the control. */
+	help?: ReactNode;
+	changed?: boolean;
+	onReset?: () => void;
+	/** Plain body label instead of the uppercase field heading. */
+	plain?: boolean;
+	className?: string;
+	children: ReactNode;
+}
+
+function ConfigField({
+	label,
+	help,
+	changed,
+	onReset,
+	plain,
+	className,
+	children,
+}: ConfigFieldProps): JSX.Element {
+	return (
+		<div className={cx(styles.field, className)}>
+			<div className={styles.header}>
+				<span className={plain ? styles.plainLabel : styles.label}>{label}</span>
+				{changed && onReset && (
+					<button
+						type="button"
+						className={styles.reset}
+						data-testid="config-field-reset"
+						onClick={onReset}
+					>
+						Reset
+					</button>
+				)}
+			</div>
+			{children}
+			{help && <span className={styles.help}>{help}</span>}
+		</div>
+	);
+}
+
+export default ConfigField;

frontend/src/pages/DashboardPage/DashboardContainer/PanelEditor/ConfigPane/controls/ConfigFieldRow/ConfigFieldRow.module.scss

@@ -0,0 +1,5 @@
+.row {
+	display: grid;
+	grid-template-columns: repeat(auto-fit, minmax(110px, 1fr));
+	gap: 10px;
+}

frontend/src/pages/DashboardPage/DashboardContainer/PanelEditor/ConfigPane/controls/ConfigFieldRow/ConfigFieldRow.tsx

@@ -0,0 +1,10 @@
+import type { ReactNode } from 'react';
+
+import styles from './ConfigFieldRow.module.scss';
+
+/** Side-by-side fields that wrap when the pane is narrow. */
+function ConfigFieldRow({ children }: { children: ReactNode }): JSX.Element {
+	return <div className={styles.row}>{children}</div>;
+}
+
+export default ConfigFieldRow;

frontend/src/pages/DashboardPage/DashboardContainer/PanelEditor/ConfigPane/controls/ConfigInlineField/ConfigInlineField.module.scss

@@ -0,0 +1,24 @@
+.row {
+	display: grid;
+	grid-template-columns: 76px minmax(0, 1fr);
+	align-items: center;
+	gap: 12px;
+}
+
+// Matches ConfigField's heading.
+.label {
+	font-family: 'Geist Mono', monospace;
+	font-size: 12px;
+	letter-spacing: 0.1em;
+	text-transform: uppercase;
+	white-space: nowrap;
+	color: var(--l2-foreground);
+}
+
+.help {
+	grid-column: 2;
+	margin-top: -4px;
+	font-size: 12px;
+	line-height: 17px;
+	color: var(--l2-foreground);
+}

frontend/src/pages/DashboardPage/DashboardContainer/PanelEditor/ConfigPane/controls/ConfigInlineField/ConfigInlineField.tsx

@@ -0,0 +1,33 @@
+import type { ReactNode } from 'react';
+
+import styles from './ConfigInlineField.module.scss';
+
+interface ConfigInlineFieldProps {
+	label: string;
+	/** Shown under the control. */
+	help?: ReactNode;
+	helpTestId?: string;
+	children: ReactNode;
+}
+
+/** A field whose heading sits beside the control rather than above it. */
+function ConfigInlineField({
+	label,
+	help,
+	helpTestId,
+	children,
+}: ConfigInlineFieldProps): JSX.Element {
+	return (
+		<div className={styles.row}>
+			<span className={styles.label}>{label}</span>
+			{children}
+			{help && (
+				<span className={styles.help} data-testid={helpTestId}>
+					{help}
+				</span>
+			)}
+		</div>
+	);
+}
+
+export default ConfigInlineField;

frontend/src/pages/DashboardPage/DashboardContainer/PanelEditor/ConfigPane/controls/ConfigNumberInput/ConfigNumberInput.tsx

@@ -0,0 +1,47 @@
+import type { ChangeEvent } from 'react';
+import { Input } from 'antd';
+
+import ConfigField from '../ConfigField/ConfigField';
+
+interface ConfigNumberInputProps {
+	testId: string;
+	/** Omitted for an input whose row already names it. */
+	label?: string;
+	placeholder?: string;
+	value: number | null | undefined;
+	onChange: (next: number | null) => void;
+}
+
+/** Numeric input where empty means "auto"; transient non-numeric input (e.g. "-") clears. */
+function ConfigNumberInput({
+	testId,
+	label,
+	placeholder = 'Auto',
+	value,
+	onChange,
+}: ConfigNumberInputProps): JSX.Element {
+	const handleChange = (e: ChangeEvent<HTMLInputElement>): void => {
+		const raw = e.target.value;
+		onChange(raw === '' || Number.isNaN(Number(raw)) ? null : Number(raw));
+	};
+
+	const input = (
+		<Input
+			data-testid={testId}
+			type="number"
+			placeholder={placeholder}
+			value={value ?? ''}
+			onChange={handleChange}
+		/>
+	);
+
+	return label ? (
+		<ConfigField label={label} plain>
+			{input}
+		</ConfigField>
+	) : (
+		input
+	);
+}
+
+export default ConfigNumberInput;

frontend/src/pages/DashboardPage/DashboardContainer/PanelEditor/ConfigPane/controls/ConfigRangeInput/ConfigRangeInput.module.scss

@@ -0,0 +1,10 @@
+.range {
+	display: grid;
+	grid-template-columns: minmax(0, 1fr) auto minmax(0, 1fr);
+	align-items: center;
+	gap: 10px;
+}
+
+.dash {
+	color: var(--l3-foreground);
+}

frontend/src/pages/DashboardPage/DashboardContainer/PanelEditor/ConfigPane/controls/ConfigRangeInput/ConfigRangeInput.tsx

@@ -0,0 +1,40 @@
+import ConfigNumberInput from '../ConfigNumberInput/ConfigNumberInput';
+
+import styles from './ConfigRangeInput.module.scss';
+
+interface ConfigRangeInputProps {
+	/** Prefix for the `-soft-min` / `-soft-max` test ids. */
+	testIdPrefix: string;
+	min: number | null | undefined;
+	max: number | null | undefined;
+	onChangeMin: (next: number | null) => void;
+	onChangeMax: (next: number | null) => void;
+}
+
+function ConfigRangeInput({
+	testIdPrefix,
+	min,
+	max,
+	onChangeMin,
+	onChangeMax,
+}: ConfigRangeInputProps): JSX.Element {
+	return (
+		<div className={styles.range}>
+			<ConfigNumberInput
+				testId={`${testIdPrefix}-soft-min`}
+				placeholder="Min"
+				value={min}
+				onChange={onChangeMin}
+			/>
+			<span className={styles.dash}>–</span>
+			<ConfigNumberInput
+				testId={`${testIdPrefix}-soft-max`}
+				placeholder="Max"
+				value={max}
+				onChange={onChangeMax}
+			/>
+		</div>
+	);
+}
+
+export default ConfigRangeInput;

frontend/src/pages/DashboardPage/DashboardContainer/PanelEditor/ConfigPane/controls/ConfigRangeSlider/ConfigRangeSlider.module.scss

@@ -0,0 +1,23 @@
+.row {
+	display: flex;
+	align-items: center;
+	gap: 12px;
+}
+
+.slider {
+	flex: 1;
+	min-width: 0;
+	// The design-system slider insets its track by half a thumb on each side so the
+	// fill follows the thumb's centre. Pull that inset back off the row so the track
+	// lines up with the other controls; the thumb never paints past the track edge.
+	margin-inline: calc(var(--slider-thumb-width, 18px) / -2);
+}
+
+.value {
+	flex-shrink: 0;
+	min-width: 56px;
+	text-align: right;
+	font-size: 12px;
+	font-variant-numeric: tabular-nums;
+	color: var(--l3-foreground);
+}