fix(learning): chair_name במקור — סופי-ועדה תמיד נכנס לקורפוס-הפסיקה (TaskMaster #134)

הבאג: שלב-הלמידה (ingest_final_version → ingest_internal_decision) מוסיף כל
סופי כתקדים ציטוטי ב-case_law (source_kind=internal_committee), אך נכשל
בשקט (non-fatal warning) כש-cases.chair_name ריק — בגלל constraint
case_law_internal_chair_check. כך סופיים של 1194/1200/8070 לא נכנסו
לקורפוס-הפסיקה. שורש: (1) chair_name לא נקבע בפתיחת תיק; (2) מסלול-ה-MCP
העביר chair גולמי בעוד מסלול-ה-UI (web/) כבר פתר אותו דטרמיניסטית —
**מסלולים מקבילים מתפצלים (הפרת INV-G2)**; (3) הכשל נבלע (נגד §6).

תיקון-שורש (3 שכבות):
1. **SoT יחיד (INV-G2):** `config.committee_chair_for_case` — המקום היחיד
   שגם web/app.py וגם tools/workflow.py + db.create_case גוזרים ממנו chair
   (לפי תחילית מספר-התיק; override ל-env). web/ אחוד אליו (הוסרה הכפילות).
2. **נרמול-במקור (INV-G1):** `db.create_case` קובע chair_name תמיד לא-ריק;
   `cases.case_create` חושף param. `ingest_final_version` גוזר chair מה-SoT
   במקום הערך הגולמי → ה-constraint לא נופל.
3. **נראות (§6/feedback_silent_swallow):** כשל-העתק מוחזר ב-result
   (`internal_corpus_error`) ו-`final_learning_pipeline` מדפיס אזהרה — לא
   נבלע. backfill ל-11 תיקים עם chair ריק. `audit_corpus_integrity`:
   נוספו CHECK_D (תיקים מוכרעים ללא chair) + CHECK_E (סופי-final חסר
   מקורפוס-הפסיקה) — שניהם 0 כעת.

invariants: מקיים INV-G1 (נרמול בכתיבה), INV-G2 (מסלול-יחיד, אוחד web↔MCP),
§6 (אין בליעה שקטה). בדיקות: py_compile + 14 pytest (chair_seed_gate,
audit_provenance) + integration של create_case (default+override) + הרצת
ה-audit החי (A–E=0).

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

mcp-server/src/legal_mcp/config.py

@@ -362,3 +362,34 @@ def parse_llm_json(raw: str):
                 except json.JSONDecodeError:
                     pass
     return None
+
+
+# ── Committee chair — single source of truth (INV-G2) ─────────────────
+# internal_committee rows REQUIRE a non-empty chair_name (DB constraint
+# case_law_internal_chair_check). Our committee (CMP 1xxx, CMPA 8/9xxx) is
+# chaired by Dafna Tamir; map by case-number prefix so adding a future chair
+# stays a one-line local change. This resolver is the ONE place both the
+# FastAPI final-upload path (web/app.py) and the MCP learning path
+# (tools/workflow.py + services/db.create_case) derive the chair from — so
+# the two cannot drift into parallel logic. Override via env for another
+# committee.
+COMMITTEE_CHAIR_DEFAULT = os.environ.get("DEFAULT_CHAIR_NAME", "דפנה תמיר")
+COMMITTEE_CHAIR_BY_PREFIX = {
+    "1": COMMITTEE_CHAIR_DEFAULT,
+    "8": COMMITTEE_CHAIR_DEFAULT,
+    "9": COMMITTEE_CHAIR_DEFAULT,
+}
+
+
+def committee_chair_for_case(case: dict | None, case_number: str) -> str:
+    """Resolve the chair for one of OUR decisions deterministically (no LLM):
+    the case's own chair_name, else the committee default by case-number prefix.
+
+    Never returns empty for a valid case number — this is how chair_name is
+    normalised at the source (INV-G1) so internal_committee corpus copies of
+    finals never silently fail the DB chair constraint.
+    """
+    existing = ((case or {}).get("chair_name") or "").strip()
+    if existing:
+        return existing
+    return COMMITTEE_CHAIR_BY_PREFIX.get((case_number or "")[:1], COMMITTEE_CHAIR_DEFAULT)

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

@@ -1555,22 +1555,30 @@ async def create_case(
     practice_area: str = "",
     appeal_subtype: str = "",
     proceeding_type: str = "ערר",
+    # Default "" — resolved below to the committee chair (never stored empty).
+    # internal_committee corpus copies of this case's final REQUIRE a chair
+    # (DB constraint case_law_internal_chair_check); setting it at creation
+    # (INV-G1, source) keeps the learning loop's precedent copy from failing.
+    chair_name: str = "",
 ) -> dict:
     pool = await get_pool()
     case_id = uuid4()
+    canonical_number = _canonical_case_number(case_number)
+    resolved_chair = config.committee_chair_for_case(
+        {"chair_name": chair_name}, canonical_number)
     async with pool.acquire() as conn:
         await conn.execute(
             """INSERT INTO cases (id, case_number, title, appellants, respondents,
                subject, property_address, permit_number, committee_type,
                hearing_date, notes, expected_outcome,
-               practice_area, appeal_subtype, proceeding_type)
-               VALUES ($1, $2, $3, $4, $5, $6, $7, $8, $9, $10, $11, $12, $13, $14, $15)""",
-            case_id, _canonical_case_number(case_number), title,
+               practice_area, appeal_subtype, proceeding_type, chair_name)
+               VALUES ($1, $2, $3, $4, $5, $6, $7, $8, $9, $10, $11, $12, $13, $14, $15, $16)""",
+            case_id, canonical_number, title,
             json.dumps(appellants or []),
             json.dumps(respondents or []),
             subject, property_address, permit_number, committee_type,
             hearing_date, notes, expected_outcome,
-            practice_area, appeal_subtype, proceeding_type,
+            practice_area, appeal_subtype, proceeding_type, resolved_chair,
         )
     return await get_case(case_id)
 

mcp-server/src/legal_mcp/tools/cases.py

@@ -132,6 +132,7 @@ async def case_create(
     practice_area: str = "",
     appeal_subtype: str = "",
     proceeding_type: str = "",
+    chair_name: str = "",
 ) -> str:
     """יצירת תיק ערר חדש.
 
@@ -153,6 +154,9 @@ async def case_create(
         appeal_subtype: סוג ערר (building_permit / betterment_levy / compensation_197).
                         ריק = יוסק אוטומטית ממספר התיק
         proceeding_type: 'ערר' / 'בל"מ'. ריק = יוסק מ-appeal_subtype/subject.
+        chair_name: שם יו"ר הוועדה. ריק = ברירת-המחדל של הוועדה לפי תחילית
+                    מספר-התיק (SoT: config.committee_chair_for_case) — נשמר
+                    תמיד לא-ריק כדי שהעתק-הסופי לקורפוס-הפסיקה לא ייכשל.
     """
     # INV-TOOL3 / GAP-52: idempotent on case_number (already UNIQUE in schema).
     # Re-creating an existing case returns it instead of raising a unique-violation.
@@ -204,6 +208,7 @@ async def case_create(
         practice_area=practice_area,
         appeal_subtype=appeal_subtype,
         proceeding_type=resolved_proc,
+        chair_name=chair_name,
     )
 
     # If the user overrode the case-number convention (e.g. case 8500 marked

mcp-server/src/legal_mcp/tools/workflow.py

@@ -326,13 +326,20 @@ async def ingest_final_version(
         return err(str(e))
 
     # Auto-ingest into internal committee decisions corpus (best-effort).
+    # chair_name is resolved via the shared SoT (config.committee_chair_for_case)
+    # — the SAME resolver the FastAPI upload path uses — so the two paths cannot
+    # drift (INV-G2) and the DB chair constraint is never hit on an empty chair
+    # (INV-G1: chair normalised at source). Failures are surfaced, not swallowed
+    # (engineering rule §6 / feedback_silent_swallow): the result carries the
+    # reason and final_learning_pipeline prints it.
     try:
+        from legal_mcp import config
         from legal_mcp.services import internal_decisions as int_svc
         await int_svc.ingest_internal_decision(
             case_number=case_number,
             case_name=case.get("title", ""),
             decision_date=case.get("decision_date"),
-            chair_name=case.get("chair_name", ""),
+            chair_name=config.committee_chair_for_case(case, case_number),
             district="ירושלים",
             practice_area=case.get("practice_area", ""),
             appeal_subtype=case.get("appeal_subtype", ""),
@@ -340,8 +347,10 @@ async def ingest_final_version(
         )
         result["internal_corpus_ingested"] = True
     except Exception as e:
-        logger.warning("ingest_final_version: internal corpus ingestion failed (non-fatal): %s", e)
+        logger.warning(
+            "ingest_final_version: internal corpus ingestion failed (non-fatal): %s", e)
         result["internal_corpus_ingested"] = False
+        result["internal_corpus_error"] = str(e)
 
     return ok(result)