Adds a new prop for specific custom instructions for create PR with AI

(vscode-gitlens-private#43, #4177)

Author: sergeibbb

docs/telemetry-events.md

@@ -208,6 +208,29 @@ or
 
 or
 
+```typescript
+{
+  'duration': number,
+  'failed.error': string,
+  'failed.reason': 'user-declined' | 'user-cancelled' | 'error',
+  'input.length': number,
+  'model.id': string,
+  'model.provider.id': 'anthropic' | 'deepseek' | 'gemini' | 'github' | 'gitkraken' | 'huggingface' | 'openai' | 'vscode' | 'xai',
+  'model.provider.name': string,
+  'output.length': number,
+  'retry.count': number,
+  'type': 'createPullRequest',
+  'usage.completionTokens': number,
+  'usage.limits.limit': number,
+  'usage.limits.resetsOn': string,
+  'usage.limits.used': number,
+  'usage.promptTokens': number,
+  'usage.totalTokens': number
+}
+```
+
+or
+
 ```typescript
 {
   'duration': number,

src/config.ts

@@ -212,6 +212,10 @@ interface AIConfig {
 	readonly generateChangelog: {
 		readonly customInstructions: string;
 	};
+	readonly generatePullRequestMessage: {
+		readonly customInstructions: string;
+		readonly enabled: boolean;
+	};
 	readonly generateCommitMessage: {
 		readonly customInstructions: string;
 		readonly enabled: boolean;

src/constants.telemetry.ts

@@ -344,10 +344,15 @@ export interface AIGenerateChangelogEventData extends AIEventDataBase {
 	type: 'changelog';
 }
 
+export interface AIGenerateCreatePullRequestEventData extends AIEventDataBase {
+	type: 'createPullRequest';
+}
+
 type AIGenerateEvent =
 	| AIGenerateCommitEventData
 	| AIGenerateDraftEventData
 	| AIGenerateStashEventData
+	| AIGenerateCreatePullRequestEventData
 	| AIGenerateChangelogEventData;
 
 export type AISwitchModelEvent =

src/plus/ai/aiProviderService.ts

@@ -552,14 +552,14 @@ export class AIProviderService implements Disposable {
 				diff: diff?.contents ?? '',
 				data: commits.sort((a, b) => a[1] - b[1]).map(c => c[0]),
 				context: options?.context ?? '',
-				instructions: configuration.get('ai.generateCommitMessage.customInstructions') ?? '',
+				instructions: configuration.get('ai.generatePullRequestMessage.customInstructions') ?? '',
 			}),
 			m => `Generating pull request details with ${m.name}...`,
 			source,
 			m => ({
 				key: 'ai/generate',
 				data: {
-					type: 'commitMessage',
+					type: 'createPullRequest',
 					'model.id': m.id,
 					'model.provider.id': m.provider.id,
 					'model.provider.name': m.provider.name,