feat: add stale-case-reminder and weekly-feedback-analysis jobs

Declare two new cron jobs in plugin.json and manifest.ts, and implement
their handlers in worker.ts. stale-case-reminder runs daily at 08:00 and
posts a warning comment on any Paperclip issue linked to a legal-ai case
that has not been updated in 3+ days. weekly-feedback-analysis runs every
Sunday at 19:00, fetches the weekly chair-feedback summary from legal-ai,
and invokes the CEO agent to update decision-lessons.md with new lessons.

src/manifest.ts

@@ -158,6 +158,18 @@ export default {
 				"Polls legal-ai for case status changes and updates Paperclip issues",
 			schedule: "*/15 * * * *",
 		},
+		{
+			jobKey: "stale-case-reminder",
+			displayName: "תזכורת תיקים תקועים",
+			description: "מזהה תיקים שלא עודכנו 3+ ימים ומוסיף תגובה ל-issue",
+			schedule: "0 8 * * *",
+		},
+		{
+			jobKey: "weekly-feedback-analysis",
+			displayName: "ניתוח פידבק שבועי",
+			description: 'מסכם פידבק יו"ר מהשבוע האחרון ומעדכן את decision-lessons.md',
+			schedule: "0 19 * * 0",
+		},
 	],
 	webhooks: [
 		{