feat(bulletins): catalog monthly "עו"ד על נדל"ן" bulletins into the radar (X12)

עלון חודשי רב-נושאי (פרסום נפרד מהיומון היומי) → מתפצל ל-N שורות digest באותה
טבלה (publication='עו"ד על נדל"ן', לא קורפוס מקביל — G2):
- bulletin_splitter (LLM local-only, tools=""): מפצל ל-cases[]+articles[];
  עדכוני-חקיקה מדולגים (החלטת יו"ר).
- bulletin_library.ingest_bulletin: כל מצביע-פסיקה → digest_kind='decision'
  + embedding + autolink (כולל X13 court-fetch); כל מאמר → digest_kind='article'
  (טקסט-מלא + embedding, רקע בלבד — INV-DIG1 חל).
- content_hash per-item הוא מפתח-הדדאפ (yomon_number ריק) → אידמפוטנטי.
- db.create_digest: פרמטר digest_kind (זורם ל-INSERT + upsert).
- scripts/ingest_bulletins.py (host, venv) לעיבוד הארכיון.
- spec X12 §2.1.

אומת (dry-run, ללא DB): עלון 180 → 4 cases+1 article · עלון 201 → 4 cases
(כולל ערר-197) +1 article. עדכוני-חקיקה דולגו. claude_session נשאר local-only.

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

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

@@ -3667,10 +3667,12 @@ async def create_digest(
     subject_tags: list[str] | None = None,
     source_document_path: str = "",
     extraction_status: str = "processing",
+    digest_kind: str = "",
 ) -> dict:
     """Upsert a digest (X12). Idempotent on yomon_number (INV-G3): a repeat
     upload of the same yomon updates in place. content_hash is the secondary
-    dedup key for digests whose number couldn't be parsed."""
+    dedup key for digests whose number couldn't be parsed (and the primary key
+    for bulletin items, which carry no yomon_number — see uq_digests_content_hash)."""
     pool = await get_pool()
     content_hash = _content_hash(analysis_text)
     async with pool.acquire() as conn:
@@ -3684,10 +3686,10 @@ async def create_digest(
                 headline_holding, analysis_text, summary, underlying_citation,
                 underlying_court, underlying_date, underlying_judge, practice_area,
                 appeal_subtype, subject_tags, source_document_path,
-                content_hash, extraction_status
+                content_hash, extraction_status, digest_kind
             ) VALUES (
                 $1, $2, $3, $4, $5, $6, $7, $8, $9, $10, $11, $12, $13,
-                $14, $15, $16, $17, $18
+                $14, $15, $16, $17, $18, $19
             )
             ON CONFLICT (yomon_number) WHERE yomon_number <> ''
             DO UPDATE SET
@@ -3708,6 +3710,7 @@ async def create_digest(
                 source_document_path = COALESCE(NULLIF(EXCLUDED.source_document_path, ''), digests.source_document_path),
                 content_hash = EXCLUDED.content_hash,
                 extraction_status = EXCLUDED.extraction_status,
+                digest_kind = COALESCE(NULLIF(EXCLUDED.digest_kind, ''), digests.digest_kind),
                 updated_at = now()
             RETURNING {_DIGEST_COLS}
             """,
@@ -3715,7 +3718,7 @@ async def create_digest(
             headline_holding, analysis_text, summary, underlying_citation,
             underlying_court, underlying_date, underlying_judge, practice_area,
             appeal_subtype, list(subject_tags or []), source_document_path,
-            content_hash, extraction_status,
+            content_hash, extraction_status, digest_kind,
         )
     return _row_to_digest(row)