docs: add src/ directory index with module map and architecture

Add README.md inside src/ so visitors immediately understand the
19 modules, their purpose, and status (Production/Experimental/Legacy).
Includes ASCII architecture diagram and evolution table mapping legacy
modules to their new skill equivalents.

Author: solderzzc

src/README.md

@@ -0,0 +1,55 @@
+# DeepCamera Source Code
+
+This directory contains the original DeepCamera processing pipeline, built over 4+ years of development. These modules handle everything from camera capture to AI-powered detection and re-identification.
+
+> **🆕 Looking for the new skill system?** See [`skills/`](../skills/) for the pluggable AI skill architecture.
+
+## Module Map
+
+| Module | Purpose | Status |
+|--------|---------|--------|
+| **`yolov7_person_detector/`** | Real-time person detection using YOLOv7 | ✅ Production |
+| **`yolov7_reid/`** | Person re-identification — tracks individuals across cameras | ✅ Production |
+| **`face_detection/`** | Face detection & recognition pipeline (InsightFace) | ✅ Production |
+| **`embedding/`** | Feature extraction for visual similarity search | ✅ Production |
+| **`camera/`** | Camera capture utilities, RTSP/USB handlers | ✅ Production |
+| **`home-assistant-py/`** | Home Assistant integration (Python) | ✅ Production |
+| **`home-assistant-nodejs/`** | Home Assistant integration (Node.js) | ✅ Production |
+| **`fall_detection/`** | Fall detection for elderly care | 🧪 Experimental |
+| **`laptop_monitor/`** | Screen activity monitoring | 🧪 Experimental |
+| **`yolov2_parking/`** | Parking space detection (YOLOv2) | 📦 Legacy |
+| **`yolov3_parking/`** | Parking space detection (YOLOv3) | 📦 Legacy |
+| **`label-studio/`** | Label Studio annotation config | 📦 Legacy |
+| **`milvus/`** | Milvus vector database config | 📦 Legacy |
+| **`minio/`** | MinIO object storage config | 📦 Legacy |
+| **`flower/`** | Celery task monitor | 📦 Legacy |
+| **`monitor/`** | System monitoring utilities | 📦 Legacy |
+| **`build/`** | Build scripts for ARM/x86 platforms | 🔧 Build |
+| **`env/`** | Environment configuration | 🔧 Build |
+| **`unit_test/`** | Test suite | 🔧 Test |
+
+## Architecture
+
+```
+Camera Feed → capture (camera/) → detection (yolov7/) → embedding (embedding/)
+                                       ↓                        ↓
+                                  face_detection/         yolov7_reid/
+                                       ↓                        ↓
+                                  Face Recognition      Person Re-ID
+                                       └────────┬───────────────┘
+                                            Notification
+                                         (Home Assistant)
+```
+
+## Evolution
+
+These modules are being wrapped as **skills** for the [SharpAI Aegis](https://github.com/SharpAI/Aegis-AI) desktop app. The skill architecture provides a standard interface (`SKILL.md`) so each capability can be independently installed, configured, and updated.
+
+| Legacy Module | New Skill |
+|--------------|-----------|
+| `yolov7_person_detector/` | [`skills/detection/yolo-detection-2026/`](../skills/detection/yolo-detection-2026/) |
+| `yolov7_reid/` | `skills/detection/person-recognition/` (planned) |
+| `face_detection/` + `embedding/` | `skills/detection/face-recognition/` (planned) |
+| `home-assistant-py/` | `skills/integrations/homeassistant-bridge/` (planned) |
+
+See [`docs/skill-development.md`](../docs/skill-development.md) for how to create new skills.