Prioritize growth retries and randomize intake

src/database/growth-repository.ts

@@ -460,7 +460,11 @@ export class AccountGrowthRepository {
       const row = this.db.prepare(`
         SELECT post_id FROM account_growth_comments
         WHERE account_id = ? AND status IN ('discovered', 'retryable') AND available_at <= ?
-        ORDER BY thread_created_at DESC, discovered_at ASC
+        ORDER BY
+          CASE status WHEN 'retryable' THEN 0 ELSE 1 END,
+          CASE status WHEN 'retryable' THEN available_at END ASC,
+          thread_created_at DESC,
+          discovered_at ASC
         LIMIT 1
       `).get(accountId, now) as { post_id: string } | undefined;
       if (!row) return null;
@@ -474,6 +478,30 @@ export class AccountGrowthRepository {
     })();
   }
 
+  /**
+   * Includes retries whose cooldown is still active. Discovery uses this to
+   * avoid growing the backlog while existing work is waiting to recover.
+   */
+  hasPendingQueueWork(accountId: string): boolean {
+    return this.db.prepare(`
+      SELECT 1 FROM account_growth_comments
+      WHERE account_id = ? AND status IN ('discovered', 'retryable')
+      LIMIT 1
+    `).get(accountId) !== undefined;
+  }
+
+  /**
+   * Clears only work that has not reached Reddit. A posting lease is excluded
+   * because its remote outcome may be uncertain, and posted audit history is
+   * never touched.
+   */
+  clearPendingQueue(accountId: string): number {
+    return this.db.prepare(`
+      DELETE FROM account_growth_comments
+      WHERE account_id = ? AND status IN ('discovered', 'retryable')
+    `).run(accountId).changes;
+  }
+
   markPosted(
     accountId: string,
     postId: string,