Add outcome-aware drafting, lessons system, and improved style analysis

- Add expected_outcome field to cases (rejection/partial/full/betterment_levy)
- New lessons.py module with golden ratios, templates, and drafting guidance per outcome type
- Style analyzer now uses Opus with full decision text (no truncation), with multi-pass fallback for large corpora
- Drafting tool provides outcome-specific templates, section guidance, and ratio comments
- Improved JSON extraction with bracket-matching fallback

Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>

mcp-server/src/legal_mcp/server.py

@@ -61,12 +61,13 @@ async def case_create(
     committee_type: str = "ועדה מקומית",
     hearing_date: str = "",
     notes: str = "",
+    expected_outcome: str = "",
 ) -> str:
-    """יצירת תיק ערר חדש."""
+    """יצירת תיק ערר חדש. expected_outcome: rejection/partial_acceptance/full_acceptance/betterment_levy."""
     return await cases.case_create(
         case_number, title, appellants, respondents,
         subject, property_address, permit_number, committee_type,
-        hearing_date, notes,
+        hearing_date, notes, expected_outcome,
     )
 
 
@@ -92,11 +93,12 @@ async def case_update(
     hearing_date: str = "",
     decision_date: str = "",
     tags: list[str] | None = None,
+    expected_outcome: str = "",
 ) -> str:
-    """עדכון פרטי תיק."""
+    """עדכון פרטי תיק. expected_outcome: rejection/partial_acceptance/full_acceptance/betterment_levy."""
     return await cases.case_update(
         case_number, status, title, subject, notes,
-        hearing_date, decision_date, tags,
+        hearing_date, decision_date, tags, expected_outcome,
     )