Improve document processing pipeline and agent workflows

- Add delete_document_chunks for reprocessing, save extracted text to disk
- Expand case directory structure (original/extracted/proofread/backup)
- Update classifier patterns (תגובה, הודעת עמדה)
- Fix proofreader agent paths for new directory layout
- Update HEARTBEAT to notify on every task completion
- Improve bidi_table with LRE/PDF directional embedding
- Add Paperclip project verification and auto-close setup issue
- Add auto-sync-cases.sh for Gitea synchronization

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

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

@@ -62,7 +62,12 @@ async def case_create(
     # Initialize git repo for the case
     case_dir = config.find_case_dir(case_number)
     case_dir.mkdir(parents=True, exist_ok=True)
-    (case_dir / "documents").mkdir(exist_ok=True)
+    docs_dir = case_dir / "documents"
+    docs_dir.mkdir(exist_ok=True)
+    (docs_dir / "original").mkdir(exist_ok=True)
+    (docs_dir / "extracted").mkdir(exist_ok=True)
+    (docs_dir / "proofread").mkdir(exist_ok=True)
+    (docs_dir / "backup").mkdir(exist_ok=True)
     (case_dir / "drafts").mkdir(exist_ok=True)
 
     # Save case metadata