feat(amazonq): send ide diagnostics for inline completions (aws#7561)

## Problem

Adding client side diagnostic data back after inline flare migration

## Solution

Migrate existing logic for getting IDE diagnostic info and flow it to
`LogInlineCompletionSessionResultsParams`

Re-using 


https://github.com/aws/aws-toolkit-vscode/blob/ad2164b2937d324681f9504cb5a05d153c70eada/packages/core/src/codewhisperer/util/diagnosticsUtil.ts


---

- Treat all work as PUBLIC. Private `feature/x` branches will not be
squash-merged at release time.
- Your code changes must meet the guidelines in
[CONTRIBUTING.md](https://github.com/aws/aws-toolkit-vscode/blob/master/CONTRIBUTING.md#guidelines).
- License: I confirm that my contribution is made under the terms of the
Apache 2.0 license.

Author: liumofei-amazon

package-lock.json

@@ -35,6 +35,9 @@ import {
     inlineCompletionsDebounceDelay,
     noInlineSuggestionsMsg,
     ReferenceInlineProvider,
+    getDiagnosticsDifferences,
+    getDiagnosticsOfCurrentFile,
+    toIdeDiagnostics,
 } from 'aws-core-vscode/codewhisperer'
 import { LineTracker } from './stateTracker/lineTracker'
 import { InlineTutorialAnnotation } from './tutorials/inlineTutorialAnnotation'
@@ -116,6 +119,13 @@ export class InlineCompletionManager implements Disposable {
             firstCompletionDisplayLatency?: number
         ) => {
             // TODO: also log the seen state for other suggestions in session
+            // Calculate timing metrics before diagnostic delay
+            const totalSessionDisplayTime = performance.now() - requestStartTime
+            await sleep(1000)
+            const diagnosticDiff = getDiagnosticsDifferences(
+                this.sessionManager.getActiveSession()?.diagnosticsBeforeAccept,
+                getDiagnosticsOfCurrentFile()
+            )
             const params: LogInlineCompletionSessionResultsParams = {
                 sessionId: sessionId,
                 completionSessionResult: {
@@ -125,8 +135,10 @@ export class InlineCompletionManager implements Disposable {
                         discarded: false,
                     },
                 },
-                totalSessionDisplayTime: Date.now() - requestStartTime,
+                totalSessionDisplayTime: totalSessionDisplayTime,
                 firstCompletionDisplayLatency: firstCompletionDisplayLatency,
+                addedDiagnostics: diagnosticDiff.added.map((it) => toIdeDiagnostics(it)),
+                removedDiagnostics: diagnosticDiff.removed.map((it) => toIdeDiagnostics(it)),
             }
             this.languageClient.sendNotification(this.logSessionResultMessageName, params)
             this.disposable.dispose()

packages/amazonq/src/app/inline/completion.ts

@@ -4,6 +4,7 @@
  */
 import * as vscode from 'vscode'
 import { InlineCompletionItemWithReferences } from '@aws/language-server-runtimes-types'
+import { FileDiagnostic, getDiagnosticsOfCurrentFile } from 'aws-core-vscode/codewhisperer'
 
 // TODO: add more needed data to the session interface
 export interface CodeWhispererSession {
@@ -14,6 +15,7 @@ export interface CodeWhispererSession {
     requestStartTime: number
     firstCompletionDisplayLatency?: number
     startPosition: vscode.Position
+    diagnosticsBeforeAccept: FileDiagnostic | undefined
     // partialResultToken for the next trigger if user accepts an EDITS suggestion
     editsStreakPartialResultToken?: number | string
 }
@@ -31,13 +33,15 @@ export class SessionManager {
         startPosition: vscode.Position,
         firstCompletionDisplayLatency?: number
     ) {
+        const diagnosticsBeforeAccept = getDiagnosticsOfCurrentFile()
         this.activeSession = {
             sessionId,
             suggestions,
             isRequestInProgress: true,
             requestStartTime,
             startPosition,
             firstCompletionDisplayLatency,
+            diagnosticsBeforeAccept,
         }
     }
 

packages/amazonq/src/app/inline/sessionManager.ts

@@ -471,8 +471,8 @@
         "@aws-sdk/types": "^3.13.1",
         "@aws/chat-client": "^0.1.4",
         "@aws/chat-client-ui-types": "^0.1.47",
-        "@aws/language-server-runtimes": "^0.2.99",
-        "@aws/language-server-runtimes-types": "^0.1.41",
+        "@aws/language-server-runtimes": "^0.2.101",
+        "@aws/language-server-runtimes-types": "^0.1.42",
         "@cspotcode/source-map-support": "^0.8.1",
         "@sinonjs/fake-timers": "^10.0.2",
         "@types/adm-zip": "^0.4.34",