Add pre-ruling interim draft (טיוטת ביניים) for appeals committee

Lets the chair generate a partial decision DOCX before the discussion-and-
ruling block is decided. Same template, skill and DOCX styling as the final
decision (David, RTL, bookmarks) — only the block selection and order differ:
רקע (ו) → תכניות+היתרים (ט) → טענות (ז) → הליכים (ח). The opening (ה),
ruling (י), summary (יא), and signatures (יב) are omitted.

- New appraiser_facts table + CRUD + conflict detection in db.py (V5 schema).
  Conflict = same plan/permit identifier reported differently by 2+ appraisers.
- New appraiser_facts_extractor service: per-appraisal Claude extraction of
  plans + permits with raw quotes and page numbers.
- block-tet prompt extended with a permits sub-section sourced from the
  extracted facts, plus an explicit instruction to flag inter-appraiser
  conflicts in neutral wording without resolving them (deferred to block-yod).
- block-chet prompt extended with a post-hearing materials context sourced
  from documents.metadata.is_post_hearing.
- docx_exporter.export_decision now accepts mode='interim' which reorders
  the blocks per the chair's mental model and writes
  טיוטת-ביניים-v{N}.docx (versioned independently of regular drafts).
- 3 new MCP tools: extract_appraiser_facts, write_interim_draft,
  export_interim_draft. write_interim_draft auto-runs extraction if the
  appraiser_facts table is empty for the case.

mcp-server/src/legal_mcp/server.py

@@ -321,6 +321,24 @@ async def export_docx(case_number: str, output_path: str = "") -> str:
     return await drafting.export_docx(case_number, output_path)
 
 
+@mcp.tool()
+async def extract_appraiser_facts(case_number: str) -> str:
+    """חילוץ תכניות והיתרים מכל השומות בתיק וזיהוי סתירות בין שמאים. הכנה לטיוטת ביניים."""
+    return await drafting.extract_appraiser_facts(case_number)
+
+
+@mcp.tool()
+async def write_interim_draft(case_number: str, instructions: str = "") -> str:
+    """כתיבת ארבעת הבלוקים לטיוטת ביניים (רקע, תכניות+היתרים, טענות, הליכים) — אותו skill וטמפלט."""
+    return await drafting.write_interim_draft(case_number, instructions)
+
+
+@mcp.tool()
+async def export_interim_draft(case_number: str, output_path: str = "") -> str:
+    """ייצוא טיוטת ביניים ל-DOCX — סדר חדש (רקע → תכניות+היתרים → טענות → הליכים), ללא דיון/סיכום."""
+    return await drafting.export_interim_draft(case_number, output_path)
+
+
 @mcp.tool()
 async def apply_user_edit(case_number: str, edit_filename: str) -> str:
     """רישום עריכה שהעלה המשתמש (עריכה-v*.docx) כמקור האמת החדש — מזריק bookmarks אם חסר."""