feat(X13): auto-trigger court fetch from digests + drain tool

סוגר את הלולאה — יומון שמצביע על פס"ד בית-משפט שלא בקורפוס מזניק אחזור
אוטומטי, וקושר את היומון חזרה אחרי הקליטה (INV-DIG3 + INV-CF2).

- digest_library.try_autolink: בכשל-קישור, אם הציטוט מסווג כפס"ד-בימ"ש
  (supreme/admin) → _enqueue_court_fetch יוצר court_fetch_jobs(pending);
  ועדת-ערר (skip) לא מוזנק. never-raises (לא שובר קליטת-יומון).
- orchestrator.drain_pending(limit): מנקז pending/failed סדרתי (cooldown,
  INV-CF4), fetch+ingest לכל אחד; בהצלחה מקשר את היומון ל-case_law שנקלט.
- כלי-MCP court_fetch_drain + רישום ב-server.py.
- X13 spec: עודכן (הפער ב-INV-CF2 סומן כמתוקן).

נבדק מול ה-DB: עת"מ 46111-12-22 → job tier=admin pending digest-linked;
ערר 1110/20 → לא מוזנק. כלי מקומי בלבד (ingest = claude CLI).

Co-Authored-By: Claude Opus 4.8 (1M context) <noreply@anthropic.com>

mcp-server/src/legal_mcp/services/digest_library.py

@@ -83,11 +83,40 @@ async def try_autolink(digest_id: UUID | str, underlying_citation: str) -> str |
         logger.warning("digest try_autolink lookup failed for %r: %s", citation, e)
         return None
     if not match:
+        # Gap (INV-DIG3): the underlying ruling isn't in the corpus. If it's a
+        # court verdict (not ועדת-ערר), enqueue an X13 auto-fetch job so the gap
+        # is actionable instead of silently dropped (INV-CF2). Never raises.
+        await _enqueue_court_fetch(digest_id, citation)
         return None
     await db.link_digest_to_case_law(digest_id, match["id"])
     return str(match["id"])
 
 
+async def _enqueue_court_fetch(digest_id: UUID | str, citation: str) -> None:
+    """Queue an X13 court-verdict fetch for an unlinked digest citation.
+
+    Court rulings (supreme/admin) → a ``court_fetch_jobs`` row drained later by
+    ``court_fetch_drain``. ועדת-ערר (skip) is left alone — it needs Nevo and is
+    surfaced through the normal missing-precedent path, not auto-fetch.
+    """
+    try:
+        from legal_mcp.services import court_citation
+        cit = court_citation.classify(citation)
+        if cit.tier not in ("supreme", "admin"):
+            return
+        await db.court_fetch_job_upsert(
+            case_number_norm=cit.case_number_norm,
+            citation_raw=citation,
+            tier=cit.tier,
+            court=cit.court_prefix,
+            digest_id=UUID(str(digest_id)),
+        )
+        logger.info("digest %s: enqueued court-fetch for %r (tier=%s)",
+                    digest_id, citation, cit.tier)
+    except Exception as e:  # never break digest ingest
+        logger.warning("digest court-fetch enqueue failed for %r: %s", citation, e)
+
+
 # ── Container-safe creation (web upload) — no LLM, no embedding ──────
 
 async def create_pending_digest(