feat: Allow editing review comments

Add update method to ReviewCommentRepository, updateReviewComment tRPC
procedure, and inline edit UI in CommentThread. Edit button appears on
user-authored comments (not agent comments) when unresolved. Uses the
existing CommentForm with a new initialValue prop.

apps/server/db/repositories/drizzle/review-comment.ts

@@ -80,6 +80,19 @@ export class DrizzleReviewCommentRepository implements ReviewCommentRepository {
       .orderBy(asc(reviewComments.createdAt));
   }
 
+  async update(id: string, body: string): Promise<ReviewComment | null> {
+    await this.db
+      .update(reviewComments)
+      .set({ body, updatedAt: new Date() })
+      .where(eq(reviewComments.id, id));
+    const rows = await this.db
+      .select()
+      .from(reviewComments)
+      .where(eq(reviewComments.id, id))
+      .limit(1);
+    return rows[0] ?? null;
+  }
+
   async resolve(id: string): Promise<ReviewComment | null> {
     await this.db
       .update(reviewComments)

apps/server/db/repositories/review-comment-repository.ts

@@ -20,6 +20,7 @@ export interface ReviewCommentRepository {
   create(data: CreateReviewCommentData): Promise<ReviewComment>;
   createReply(parentCommentId: string, body: string, author?: string): Promise<ReviewComment>;
   findByPhaseId(phaseId: string): Promise<ReviewComment[]>;
+  update(id: string, body: string): Promise<ReviewComment | null>;
   resolve(id: string): Promise<ReviewComment | null>;
   unresolve(id: string): Promise<ReviewComment | null>;
   delete(id: string): Promise<void>;