feat(mcp): case_get_final_text — let agents read the signed final DOCX

The Knowledge Curator (Hermes) couldn't read סופי-{case}.docx because
document_get_text only works on rows in the documents table — the final
file is just a copy in the case's exports/ directory, not a tracked
document. CMP-71 hit this and produced an unproductive interaction
asking the user how to fix the access issue.

Add a new MCP tool that:
- Locates exports/סופי-{case_number}.docx via config.find_case_dir
- Extracts text using the existing extractor service (python-docx based)
- Returns JSON with status + text + page_count + truncation info
- Optional max_chars cap for large decisions

Smoke test on case 1130-25: 400-char preview returns proper Hebrew text
beginning with "לפנינו ערר על החלטת הוועדה המקומית...".

The local MCP server reloads on next Hermes spawn (stdio mode), so the
tool is immediately available — no Coolify deploy needed.

Curator's promptTemplate (DB-stored) updated to use the new tool as the
primary path for reading the final.

Co-Authored-By: Claude Opus 4.7 (1M context) <noreply@anthropic.com>

mcp-server/src/legal_mcp/server.py

@@ -116,6 +116,13 @@ async def case_delete(case_number: str, remove_files: bool = False) -> str:
     return await cases.case_delete(case_number, remove_files)
 
 
+@mcp.tool()
+async def case_get_final_text(case_number: str, max_chars: int = 0) -> str:
+    """קליטת טקסט ההחלטה הסופית (`סופי-{case}.docx` בתיקיית exports).
+    max_chars: 0=הכל, אחרת חיתוך לאורך הנתון. שימושי ל-Hermes Knowledge Curator."""
+    return await cases.case_get_final_text(case_number, max_chars)
+
+
 # Precedent attachments (user-supplied legal support for the compose phase)
 @mcp.tool()
 async def precedent_attach(

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

@@ -13,7 +13,7 @@ from uuid import UUID
 import httpx
 
 from legal_mcp import config
-from legal_mcp.services import audit, db, git_sync, practice_area as pa
+from legal_mcp.services import audit, db, extractor, git_sync, practice_area as pa
 
 logger = logging.getLogger(__name__)
 
@@ -370,3 +370,55 @@ async def case_delete(case_number: str, remove_files: bool = False) -> str:
             result["removed_files"] = True
 
     return json.dumps(result, ensure_ascii=False, indent=2)
+
+
+async def case_get_final_text(case_number: str, max_chars: int = 0) -> str:
+    """קליטת טקסט ההחלטה הסופית (`סופי-{case}.docx` בתיקיית exports).
+
+    בניגוד ל-`document_get_text` שעובד על שורות בטבלת `documents`,
+    הקובץ הסופי הוא רק קובץ בתיקייה (נוצר על ידי `api_mark_final`).
+
+    Args:
+        case_number: מספר תיק הערר
+        max_chars: אם >0, חתוך את הטקסט המוחזר לאורך הזה. 0 = הכל.
+    """
+    case_dir = config.find_case_dir(case_number)
+    final_path = case_dir / "exports" / f"סופי-{case_number}.docx"
+
+    if not final_path.exists():
+        return json.dumps({
+            "status": "not_found",
+            "case_number": case_number,
+            "expected_path": str(final_path),
+            "hint": (
+                "ההחלטה הסופית עדיין לא סומנה כ'סופית' ב-UI. "
+                "דפנה צריכה ללחוץ 'סמן כסופי' על קובץ הטיוטה הנכון."
+            ),
+        }, ensure_ascii=False, indent=2)
+
+    try:
+        text, page_count, _ = await extractor.extract_text(str(final_path))
+    except Exception as e:
+        logger.exception("case_get_final_text: extraction failed for %s", case_number)
+        return json.dumps({
+            "status": "error",
+            "case_number": case_number,
+            "file_path": str(final_path),
+            "error": str(e),
+        }, ensure_ascii=False, indent=2)
+
+    text = text or ""
+    truncated = False
+    if max_chars > 0 and len(text) > max_chars:
+        text = text[:max_chars]
+        truncated = True
+
+    return json.dumps({
+        "status": "ok",
+        "case_number": case_number,
+        "file_path": str(final_path),
+        "text_length": len(text),
+        "page_count": page_count,
+        "truncated": truncated,
+        "text": text,
+    }, ensure_ascii=False, indent=2)