feat: Add Document Crawler & Auto-Onboarding service (Phase 1.4)

New standalone Python/FastAPI service for automatic compliance document
scanning, LLM-based classification, IPFS archival, and gap analysis.
Includes extractors (PDF, DOCX, XLSX, PPTX), keyword fallback classifier,
compliance matrix, and full REST API on port 8098.

Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>

document-crawler/extractors/docx_extractor.py

@@ -0,0 +1,18 @@
+"""DOCX text extraction using python-docx."""
+
+from docx import Document
+
+
+def extract_docx(file_path: str) -> str:
+    """Extract text from a DOCX file."""
+    doc = Document(file_path)
+    paragraphs = [p.text for p in doc.paragraphs if p.text.strip()]
+
+    # Also extract from tables
+    for table in doc.tables:
+        for row in table.rows:
+            cells = [cell.text.strip() for cell in row.cells if cell.text.strip()]
+            if cells:
+                paragraphs.append(" | ".join(cells))
+
+    return "\n\n".join(paragraphs)