feat: phased release packaging (Phase 1 + Phase 2)

- scripts/release_pack.py: packages output_json + schema + chunks + vectors
- Phase 1: triggered after ASR+ASRX+Rule 1+vectorization (sentence chunk delivery)
- Phase 2: triggered after full pipeline + 5W1H Agent (full delivery)
- Both phases include all available {uuid}.*.json files
- Non-overlapping directories: release/phase1/ and release/phase2/

docs/RELEASE_PHASES.md

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+# Release 分階段交付
+
+## 階段劃分
+
+### Phase 1：Sentence Chunk Embedding 交付
+
+**觸發時機**: ASR + ASRX 完成 + Rule 1 Ingestion 完成
+
+**交付內容**:
+- `{uuid}.asr.json`
+- `{uuid}.asrx.json`
+- chunks（chunk_type = 'sentence'）
+- chunk_vectors（sentence embedding）
+- DB schema + chunks table data
+
+**用途**: 終端使用者可進行語意搜尋
+
+### Phase 2：5W1H Summary Chunk Embedding 交付
+
+**觸發時機**: 全部 processor 完成 + Rule 3 Ingestion + 5W1H Agent
+
+**交付內容**:
+- Phase 1 全部內容
+- `{uuid}.cut.json`
+- `{uuid}.yolo.json`
+- `{uuid}.face.json`
+- `{uuid}.pose.json`
+- `{uuid}.ocr.json`
+- chunks（chunk_type = 'cut', 'visual', 'trace', 'story'）
+- chunk_vectors（summary embedding）
+- identities / identity_bindings / face_detections
+
+**用途**: 完整搜尋 + 摘要 + 人物識別
+
+---
+
+## Worker Pipeline 整合
+
+```
+ASR  完成 → ASRX 完成
+       ↓
+   Rule 1 Ingestion (sentence chunks)
+       ↓
+   Phase 1 Release Packaging ← 自動
+       ↓
+   其餘 Processors 繼續
+       ↓
+   Rule 3 Ingestion (cut chunks + 5W1H summary)
+       ↓
+   Phase 2 Release Packaging ← 自動
+```
+
+## 產出目錄結構
+
+```
+release/
+├── phase1/
+│   ├── v1.0.0_20260509_120000/
+│   │   ├── output_json/      ← asr.json, asrx.json
+│   │   ├── schema.sql        ← chunks table DDL
+│   │   ├── chunks.csv        ← sentence chunks data
+│   │   ├── vectors.csv       ← sentence embeddings
+│   │   └── RELEASE_INFO.txt
+│   └── latest → v1.0.0_20260509_120000
+│
+└── phase2/
+    ├── v1.0.0_20260509_140000/
+    │   ├── output_json/      ← all processor outputs
+    │   ├── schema.sql        ← full schema
+    │   ├── chunks.csv        ← all chunks
+    │   ├── vectors.csv       ← all embeddings
+    │   ├── identities.csv    ← person identities
+    │   └── RELEASE_INFO.txt
+    └── latest → v1.0.0_20260509_140000
+```