feat(autocomplete): Add id field to autocomplete cache

src/services/ghost/classic-auto-complete/AutocompleteTelemetry.ts

@@ -9,7 +9,7 @@ export type { AutocompleteContext, CacheMatchType, FillInAtCursorSuggestion }
  * This key is used to track whether the same suggestion is still being displayed.
  */
 export function getSuggestionKey(suggestion: FillInAtCursorSuggestion): string {
-	return `${suggestion.prefix}|${suggestion.suffix}|${suggestion.text}`
+	return suggestion.id
 }
 
 /**

src/services/ghost/classic-auto-complete/GhostInlineCompletionProvider.ts

@@ -368,7 +368,7 @@ export class GhostInlineCompletionProvider implements vscode.InlineCompletionIte
 	): FillInAtCursorSuggestion {
 		if (!suggestionText) {
 			this.telemetry?.captureSuggestionFiltered("empty_response", telemetryContext)
-			return { text: "", prefix, suffix }
+			return { id: crypto.randomUUID(), text: "", prefix, suffix }
 		}
 
 		const processedText = postprocessGhostSuggestion({
@@ -379,11 +379,11 @@ export class GhostInlineCompletionProvider implements vscode.InlineCompletionIte
 		})
 
 		if (processedText) {
-			return { text: processedText, prefix, suffix }
+			return { id: crypto.randomUUID(), text: processedText, prefix, suffix }
 		}
 
 		this.telemetry?.captureSuggestionFiltered("filtered_by_postprocessing", telemetryContext)
-		return { text: "", prefix, suffix }
+		return { id: crypto.randomUUID(), text: "", prefix, suffix }
 	}
 
 	private async disposeIgnoreController(): Promise<void> {

src/services/ghost/classic-auto-complete/__tests__/AutocompleteTelemetry.test.ts

@@ -16,6 +16,7 @@ describe("AutocompleteTelemetry", () => {
 	 */
 	function createSuggestion(index: number): FillInAtCursorSuggestion {
 		return {
+			id: `id-${index}`,
 			text: `text-${index}`,
 			prefix: `prefix-${index}`,
 			suffix: `suffix-${index}`,

src/services/ghost/types.ts

@@ -93,6 +93,7 @@ export interface PromptResult {
 // ============================================================================
 
 export interface FillInAtCursorSuggestion {
+	id: string
 	text: string
 	prefix: string
 	suffix: string