Add varied messaging experiments

src/services/processor.ts

@@ -33,6 +33,7 @@ export function isSkip(result: ProcessResult): result is SkipResult {
 }
 
 export type ImageFetcher = (url: string, userAgent: string) => Promise<DownloadedImage>;
+export type RecentMessageProvider = (sourceType: 'image' | 'chat') => readonly string[];
 
 export class ProcessorService {
   private successfulExamples: string[] = [];
@@ -46,6 +47,7 @@ export class ProcessorService {
     private config: Config,
     private logger: Logger,
     fetchImage?: ImageFetcher,
+    private readonly recentMessageProvider: RecentMessageProvider = () => [],
   ) {
     this.fetchImage = fetchImage ?? downloadImage;
   }
@@ -183,7 +185,8 @@ export class ProcessorService {
           this.successfulExamples,
           scriptedPrompt,
           post.link_flair_text ?? undefined,
-          undefined
+          undefined,
+          this.recentMessageProvider('image'),
         ));
       } else {
         ({ analysis, message } = await this.aiClient.analyzeAndGenerateMessage(
@@ -195,6 +198,7 @@ export class ProcessorService {
           selectedStrategy?.promptOverride,
           post.link_flair_text ?? undefined,
           tone.profile.promptGuidance || undefined,
+          this.recentMessageProvider('image'),
         ));
       }
     } catch (error) {
@@ -268,7 +272,8 @@ export class ProcessorService {
           this.successfulExamples,
           scriptedPrompt,
           post.link_flair_text ?? undefined,
-          undefined
+          undefined,
+          this.recentMessageProvider('chat'),
         );
       } else {
         message = await this.aiClient.generateChatOpener(
@@ -280,6 +285,7 @@ export class ProcessorService {
           selectedStrategy?.promptOverride,
           post.link_flair_text ?? undefined,
           tone.profile.promptGuidance || undefined,
+          this.recentMessageProvider('chat'),
         );
       }
     } catch (error) {