feat: Phase 2.6 edges migration to Qdrant (TKG-only architecture)

Phase 2.6.1: co_occurrence_edges migration
- build_co_occurrence_edges_from_qdrant()
- Qdrant embeddings → frame grouping → YOLO objects
- Result: 6679 edges (vs 6701 PostgreSQL)

Phase 2.6.2: face_face_edges migration
- build_face_face_edges_from_qdrant()
- Qdrant embeddings → frame grouping → face pairs
- mutual_gaze detection preserved
- Result: 6 edges (exact match)

Phase 2.6.3: speaker_face_edges migration
- build_speaker_face_edges_from_qdrant()
- Qdrant embeddings → trace_id frame ranges
- SPEAKS_AS edge creation

Architecture:
- All edges use Qdrant payload (no face_detections queries)
- PostgreSQL fallback for empty Qdrant
- Estimated 3.6x performance improvement

Testing:
- Playground (3003): ✓ All Phase 2.6 logs verified
- Edge counts: ✓ Close match with PostgreSQL
- Fallback: ✓ Working

Docs:
- docs_v1.0/DESIGN/TKG_PHASE2_6_EDGES_MIGRATION.md
- docs_v1.0/M4_workspace/2026-06-21_phase2_6_test.md

v1.1/scripts/simple_test_v1.11.py

@@ -0,0 +1,25 @@
+#!/opt/homebrew/bin/python3.11
+"""
+Simple test script for Rust to call
+"""
+
+import sys
+import json
+import os
+
+print(f"Python version: {sys.version}")
+print(f"Arguments: {sys.argv}")
+
+# Write output file
+if len(sys.argv) > 2:
+    output_path = sys.argv[2]
+    result = {"success": True, "message": "Test successful", "args": sys.argv}
+
+    with open(output_path, "w") as f:
+        json.dump(result, f, indent=2)
+
+    print(f"Output written to: {output_path}")
+    print(f"File exists: {os.path.exists(output_path)}")
+    print(
+        f"File size: {os.path.getsize(output_path) if os.path.exists(output_path) else 0}"
+    )