fix(ai-o11y): scope overview dashboard to gen_ai spans and move message attributes (#12967)

<!--A few plain bullets saying what changed and why, for a reviewer
skimming it - not a wall of text, not a restatement of the diff, not
generated boilerplate.-->
#### Description
- Top span names and Cost by service use `builder_ai_query`, so non-AI
spans no longer show up.
- LLM cost/token panels filter on `gen_ai.request.model EXISTS`; with
variables on "All" they scanned every span.
- Default span mappers now move (not copy) vendor message keys into
`gen_ai.input.messages` / `gen_ai.output.messages`, as documented.
- Bumped versions: dashboard to 3, `gen_ai.llm` mapper to 3,
`gen_ai.agent` mapper to 2.

<!--Reference issues using `Closes #issue-number` to enable automatic
closure on merge. -->
#### Issues closed by this PR
Part of https://github.com/SigNoz/engineering-pod/issues/6107

pkg/modules/dashboard/impldashboard/fs/definitions/ai-o11y-overview.json

@@ -1,5 +1,5 @@
 {
-  "version": 2,
+  "version": 3,
   "definition": {
     "schemaVersion": "v6",
     "name": "signoz---ai-o11y-overview",
@@ -437,7 +437,7 @@
                             "stepInterval": 0,
                             "disabled": false,
                             "filter": {
-                              "expression": "gen_ai.request.model IN $model AND gen_ai.provider.name IN $provider AND deployment.environment IN $environment AND service.name IN $service_name"
+                              "expression": "gen_ai.request.model EXISTS AND gen_ai.request.model IN $model AND gen_ai.provider.name IN $provider AND deployment.environment IN $environment AND service.name IN $service_name"
                             },
                             "aggregations": [
                               {
@@ -489,7 +489,7 @@
                             "stepInterval": 0,
                             "disabled": false,
                             "filter": {
-                              "expression": "gen_ai.request.model IN $model AND gen_ai.provider.name IN $provider AND deployment.environment IN $environment AND service.name IN $service_name"
+                              "expression": "gen_ai.request.model EXISTS AND gen_ai.request.model IN $model AND gen_ai.provider.name IN $provider AND deployment.environment IN $environment AND service.name IN $service_name"
                             },
                             "aggregations": [
                               {
@@ -722,7 +722,7 @@
                             "stepInterval": 0,
                             "disabled": false,
                             "filter": {
-                              "expression": "gen_ai.request.model IN $model AND gen_ai.provider.name IN $provider AND deployment.environment IN $environment AND service.name IN $service_name"
+                              "expression": "gen_ai.request.model EXISTS AND gen_ai.request.model IN $model AND gen_ai.provider.name IN $provider AND deployment.environment IN $environment AND service.name IN $service_name"
                             },
                             "aggregations": [
                               {
@@ -782,7 +782,7 @@
                             "stepInterval": 0,
                             "disabled": false,
                             "filter": {
-                              "expression": "gen_ai.request.model IN $model AND gen_ai.provider.name IN $provider AND deployment.environment IN $environment AND service.name IN $service_name"
+                              "expression": "gen_ai.request.model EXISTS AND gen_ai.request.model IN $model AND gen_ai.provider.name IN $provider AND deployment.environment IN $environment AND service.name IN $service_name"
                             },
                             "aggregations": [
                               {
@@ -850,7 +850,7 @@
                             "stepInterval": 0,
                             "disabled": false,
                             "filter": {
-                              "expression": "gen_ai.request.model IN $model AND gen_ai.provider.name IN $provider AND deployment.environment IN $environment AND service.name IN $service_name"
+                              "expression": "gen_ai.request.model EXISTS AND gen_ai.request.model IN $model AND gen_ai.provider.name IN $provider AND deployment.environment IN $environment AND service.name IN $service_name"
                             },
                             "aggregations": [
                               {
@@ -868,7 +868,7 @@
                             "stepInterval": 0,
                             "disabled": false,
                             "filter": {
-                              "expression": "gen_ai.request.model IN $model AND gen_ai.provider.name IN $provider AND deployment.environment IN $environment AND service.name IN $service_name"
+                              "expression": "gen_ai.request.model EXISTS AND gen_ai.request.model IN $model AND gen_ai.provider.name IN $provider AND deployment.environment IN $environment AND service.name IN $service_name"
                             },
                             "aggregations": [
                               {
@@ -886,7 +886,7 @@
                             "stepInterval": 0,
                             "disabled": false,
                             "filter": {
-                              "expression": "gen_ai.request.model IN $model AND gen_ai.provider.name IN $provider AND deployment.environment IN $environment AND service.name IN $service_name"
+                              "expression": "gen_ai.request.model EXISTS AND gen_ai.request.model IN $model AND gen_ai.provider.name IN $provider AND deployment.environment IN $environment AND service.name IN $service_name"
                             },
                             "aggregations": [
                               {
@@ -904,7 +904,7 @@
                             "stepInterval": 0,
                             "disabled": false,
                             "filter": {
-                              "expression": "gen_ai.request.model IN $model AND gen_ai.provider.name IN $provider AND deployment.environment IN $environment AND service.name IN $service_name"
+                              "expression": "gen_ai.request.model EXISTS AND gen_ai.request.model IN $model AND gen_ai.provider.name IN $provider AND deployment.environment IN $environment AND service.name IN $service_name"
                             },
                             "aggregations": [
                               {
@@ -961,7 +961,7 @@
                             "stepInterval": 0,
                             "disabled": false,
                             "filter": {
-                              "expression": "gen_ai.request.model IN $model AND gen_ai.provider.name IN $provider AND deployment.environment IN $environment AND service.name IN $service_name"
+                              "expression": "gen_ai.request.model EXISTS AND gen_ai.request.model IN $model AND gen_ai.provider.name IN $provider AND deployment.environment IN $environment AND service.name IN $service_name"
                             },
                             "aggregations": [
                               {
@@ -979,7 +979,7 @@
                             "stepInterval": 0,
                             "disabled": false,
                             "filter": {
-                              "expression": "gen_ai.request.model IN $model AND gen_ai.provider.name IN $provider AND deployment.environment IN $environment AND service.name IN $service_name"
+                              "expression": "gen_ai.request.model EXISTS AND gen_ai.request.model IN $model AND gen_ai.provider.name IN $provider AND deployment.environment IN $environment AND service.name IN $service_name"
                             },
                             "aggregations": [
                               {
@@ -997,7 +997,7 @@
                             "stepInterval": 0,
                             "disabled": false,
                             "filter": {
-                              "expression": "gen_ai.request.model IN $model AND gen_ai.provider.name IN $provider AND deployment.environment IN $environment AND service.name IN $service_name"
+                              "expression": "gen_ai.request.model EXISTS AND gen_ai.request.model IN $model AND gen_ai.provider.name IN $provider AND deployment.environment IN $environment AND service.name IN $service_name"
                             },
                             "aggregations": [
                               {
@@ -1015,7 +1015,7 @@
                             "stepInterval": 0,
                             "disabled": false,
                             "filter": {
-                              "expression": "gen_ai.request.model IN $model AND gen_ai.provider.name IN $provider AND deployment.environment IN $environment AND service.name IN $service_name"
+                              "expression": "gen_ai.request.model EXISTS AND gen_ai.request.model IN $model AND gen_ai.provider.name IN $provider AND deployment.environment IN $environment AND service.name IN $service_name"
                             },
                             "aggregations": [
                               {
@@ -1076,7 +1076,7 @@
                             "stepInterval": 0,
                             "disabled": true,
                             "filter": {
-                              "expression": "gen_ai.request.model IN $model AND gen_ai.provider.name IN $provider AND deployment.environment IN $environment AND service.name IN $service_name"
+                              "expression": "gen_ai.request.model EXISTS AND gen_ai.request.model IN $model AND gen_ai.provider.name IN $provider AND deployment.environment IN $environment AND service.name IN $service_name"
                             },
                             "aggregations": [
                               {
@@ -1175,7 +1175,7 @@
                             "stepInterval": 0,
                             "disabled": true,
                             "filter": {
-                              "expression": "gen_ai.request.model IN $model AND gen_ai.provider.name IN $provider AND deployment.environment IN $environment AND service.name IN $service_name"
+                              "expression": "gen_ai.request.model EXISTS AND gen_ai.request.model IN $model AND gen_ai.provider.name IN $provider AND deployment.environment IN $environment AND service.name IN $service_name"
                             },
                             "aggregations": [
                               {
@@ -1192,7 +1192,7 @@
                             "stepInterval": 0,
                             "disabled": true,
                             "filter": {
-                              "expression": "gen_ai.request.model IN $model AND gen_ai.provider.name IN $provider AND deployment.environment IN $environment AND service.name IN $service_name"
+                              "expression": "gen_ai.request.model EXISTS AND gen_ai.request.model IN $model AND gen_ai.provider.name IN $provider AND deployment.environment IN $environment AND service.name IN $service_name"
                             },
                             "aggregations": [
                               {
@@ -1248,7 +1248,7 @@
                     "spec": {
                       "queries": [
                         {
-                          "type": "builder_query",
+                          "type": "builder_ai_query",
                           "spec": {
                             "name": "A",
                             "signal": "traces",
@@ -1282,7 +1282,7 @@
                           }
                         },
                         {
-                          "type": "builder_query",
+                          "type": "builder_ai_query",
                           "spec": {
                             "name": "B",
                             "signal": "traces",
@@ -1353,7 +1353,7 @@
                             "stepInterval": 0,
                             "disabled": false,
                             "filter": {
-                              "expression": "gen_ai.request.model IN $model AND gen_ai.provider.name IN $provider AND deployment.environment IN $environment AND service.name IN $service_name"
+                              "expression": "gen_ai.request.model EXISTS AND gen_ai.request.model IN $model AND gen_ai.provider.name IN $provider AND deployment.environment IN $environment AND service.name IN $service_name"
                             },
                             "aggregations": [
                               {
@@ -2075,7 +2075,7 @@
                             "stepInterval": 0,
                             "disabled": false,
                             "filter": {
-                              "expression": "gen_ai.request.model IN $model AND gen_ai.provider.name IN $provider AND deployment.environment IN $environment AND service.name IN $service_name"
+                              "expression": "gen_ai.request.model EXISTS AND gen_ai.request.model IN $model AND gen_ai.provider.name IN $provider AND deployment.environment IN $environment AND service.name IN $service_name"
                             },
                             "aggregations": [
                               {
@@ -2724,7 +2724,7 @@
                     "spec": {
                       "queries": [
                         {
-                          "type": "builder_query",
+                          "type": "builder_ai_query",
                           "spec": {
                             "name": "A",
                             "signal": "traces",

pkg/modules/spanmapper/implspanmapper/fs/definitions/gen_ai.agent.json

@@ -1,5 +1,5 @@
 {
-  "version": 1,
+  "version": 2,
   "definition": {
     "name": "gen_ai.agent",
     "condition": {
@@ -68,7 +68,7 @@
             {
               "key": "final_result",
               "context": "attribute",
-              "operation": "copy",
+              "operation": "move",
               "priority": 10
             }
           ]

pkg/modules/spanmapper/implspanmapper/fs/definitions/gen_ai.llm.json

@@ -1,5 +1,5 @@
 {
-  "version": 2,
+  "version": 3,
   "definition": {
     "name": "gen_ai.llm",
     "condition": {
@@ -250,19 +250,19 @@
             {
               "key": "gen_ai.prompt",
               "context": "attribute",
-              "operation": "copy",
+              "operation": "move",
               "priority": 30
             },
             {
               "key": "ai.prompt.messages",
               "context": "attribute",
-              "operation": "copy",
+              "operation": "move",
               "priority": 20
             },
             {
               "key": "input.value",
               "context": "attribute",
-              "operation": "copy",
+              "operation": "move",
               "priority": 10
             }
           ]
@@ -276,25 +276,25 @@
             {
               "key": "gen_ai.completion",
               "context": "attribute",
-              "operation": "copy",
+              "operation": "move",
               "priority": 30
             },
             {
               "key": "ai.response.toolCalls",
               "context": "attribute",
-              "operation": "copy",
+              "operation": "move",
               "priority": 25
             },
             {
               "key": "ai.response.text",
               "context": "attribute",
-              "operation": "copy",
+              "operation": "move",
               "priority": 20
             },
             {
               "key": "output.value",
               "context": "attribute",
-              "operation": "copy",
+              "operation": "move",
               "priority": 10
             }
           ]