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/monitor_v1.11/common/load_credentials_v1.11.sh

@@ -0,0 +1,35 @@
+#!/bin/bash
+# Momentry Monitor 密碼管理腳本
+# 路徑: /Users/accusys/momentry_core_0.1/monitor/common/load_credentials.sh
+#
+# 使用方式:
+#   source /path/to/load_credentials.sh
+
+# 載入環境變數（如果存在）
+if [ -f "$HOME/.momentry/credentials" ]; then
+    set -a
+    source "$HOME/.momentry/credentials"
+    set +a
+fi
+
+# 預設值
+export PG_USER="${PG_USER:-accusys}"
+export PG_PASSWORD="${PG_PASSWORD:-accusys}"
+export PG_HOST="${PG_HOST:-localhost}"
+export PG_PORT="${PG_PORT:-5432}"
+
+export REDIS_PASSWORD="${REDIS_PASSWORD:-accusys}"
+
+export MONGO_USER="${MONGO_USER:-accusys}"
+export MONGO_PASSWORD="${MONGO_PASSWORD:-Test3200Test3200}"
+export MONGO_PORT="${MONGO_PORT:-27017}"
+
+export QDRANT_API_KEY="${QDRANT_API_KEY:-Test3200Test3200Test3200}"
+
+export SFTPGO_PASSWORD="${SFTPGO_PASSWORD:-sftpgo_pass_2026}"
+export SFTPGO_USER="${SFTPGO_USER:-sftpgo}"
+
+export N8N_PASSWORD="${N8N_PASSWORD:-accusys}"
+
+export MARIADB_USER="${MARIADB_USER:-accusys}"
+export MARIADB_PASSWORD="${MARIADB_PASSWORD:-Test3200Test3200Test3200}"