Strip dead OTel event noise from telemetry compatibility paths

The open build no longer exports OpenTelemetry events, but several user-prompt, tool, hook, API, and survey paths were still constructing and calling a no-op logOTelEvent helper. This removes those dead calls, drops the now-unused helper module, and deletes an unreferenced GrowthBook experiment event artifact so the remaining compatibility layer is less distracting during future audits.

Constraint: Keep the local logEvent and tracing compatibility surfaces untouched where they still structure control flow
Constraint: Avoid touching unrelated bridge and session changes already present in the worktree
Rejected: Remove sessionTracing compatibility entirely | Call surface is still broad and intertwined with non-telemetry control flow
Rejected: Leave no-op OTel event calls in place | They add audit noise without preserving behavior
Confidence: high
Scope-risk: narrow
Reversibility: clean
Directive: Continue treating remaining telemetry-named helpers as removable only when their call sites are proven behavior-free
Tested: bun test src/services/analytics/index.test.ts src/components/FeedbackSurvey/submitTranscriptShare.test.ts
Tested: bun run ./scripts/build.ts
Not-tested: bun x tsc --noEmit (repository has pre-existing unrelated type errors)

src/services/tools/toolExecution.ts

@@ -87,7 +87,6 @@ import {
 } from '../../utils/sessionActivity.js'
 import { jsonStringify } from '../../utils/slowOperations.js'
 import { Stream } from '../../utils/stream.js'
-import { logOTelEvent } from '../../utils/telemetry/events.js'
 import {
   addToolContentEvent,
   endToolBlockedOnUserSpan,
@@ -945,28 +944,18 @@ async function checkPermissionsAndCallTool(
     )
   }
 
-  // Emit tool_decision OTel event and code-edit counter if the interactive
-  // permission path didn't already log it (headless mode bypasses permission
-  // logging, so we need to emit both the generic event and the code-edit
-  // counter here)
+  // Increment the code-edit counter here when the interactive permission path
+  // did not already log a decision (headless mode bypasses permission logging).
   if (
     permissionDecision.behavior !== 'ask' &&
     !toolUseContext.toolDecisions?.has(toolUseID)
   ) {
-    const decision =
-      permissionDecision.behavior === 'allow' ? 'accept' : 'reject'
-    const source = decisionReasonToOTelSource(
-      permissionDecision.decisionReason,
-      permissionDecision.behavior,
-    )
-    void logOTelEvent('tool_decision', {
-      decision,
-      source,
-      tool_name: sanitizeToolNameForAnalytics(tool.name),
-    })
-
     // Increment code-edit tool decision counter for headless mode
     if (isCodeEditingTool(tool.name)) {
+      const source = decisionReasonToOTelSource(
+        permissionDecision.decisionReason,
+        permissionDecision.behavior,
+      )
       void buildCodeEditToolAttributes(
         tool,
         processedInput,
@@ -1373,27 +1362,10 @@ async function checkPermissionsAndCallTool(
       }
     }
 
-    // Log tool result event for OTLP with tool parameters and decision context
     const mcpServerScope = isMcpTool(tool)
       ? getMcpServerScopeFromToolName(tool.name)
       : null
 
-    void logOTelEvent('tool_result', {
-      tool_name: sanitizeToolNameForAnalytics(tool.name),
-      success: 'true',
-      duration_ms: String(durationMs),
-      ...(Object.keys(toolParameters).length > 0 && {
-        tool_parameters: jsonStringify(toolParameters),
-      }),
-      ...(telemetryToolInput && { tool_input: telemetryToolInput }),
-      tool_result_size_bytes: String(toolResultSizeBytes),
-      ...(decisionInfo && {
-        decision_source: decisionInfo.source,
-        decision_type: decisionInfo.decision,
-      }),
-      ...(mcpServerScope && { mcp_server_scope: mcpServerScope }),
-    })
-
     // Run PostToolUse hooks
     let toolOutput = result.data
     const hookResults = []
@@ -1666,27 +1638,9 @@ async function checkPermissionsAndCallTool(
           mcpServerBaseUrl,
         ),
       })
-      // Log tool result error event for OTLP with tool parameters and decision context
       const mcpServerScope = isMcpTool(tool)
         ? getMcpServerScopeFromToolName(tool.name)
         : null
-
-      void logOTelEvent('tool_result', {
-        tool_name: sanitizeToolNameForAnalytics(tool.name),
-        use_id: toolUseID,
-        success: 'false',
-        duration_ms: String(durationMs),
-        error: errorMessage(error),
-        ...(Object.keys(toolParameters).length > 0 && {
-          tool_parameters: jsonStringify(toolParameters),
-        }),
-        ...(telemetryToolInput && { tool_input: telemetryToolInput }),
-        ...(decisionInfo && {
-          decision_source: decisionInfo.source,
-          decision_type: decisionInfo.decision,
-        }),
-        ...(mcpServerScope && { mcp_server_scope: mcpServerScope }),
-      })
     }
     const content = formatError(error)