feat(awooop): Phase 1-8 完整實作 — AwoooP Agent Platform 六平面架構

## Phase 1-3: Control Plane + Contract System
- awooop_phase1_control_plane_2026-05-04.sql: 12 張核心表 + RLS
- awooop_phase1_batch1_rls_2026-05-04.sql: 全部 FORCE RLS + GRANT
- packages/awooop-contracts/: 六合約 JSON Schema + golden fixtures
- src/models/awooop_contracts.py: Pydantic v2 contract models（extra=forbid）
- src/repositories/contract_repository.py: contract lifecycle（draft→published→active）
- src/services/contract_service.py: HMAC publish sig + Redis multi-sig activate
- src/services/schema_validator.py: LLM output validator（retry×3, E-SCHEMA-001）

## Phase 2: Tenant Isolation
- awooop_phase2_budget_ledger_2026-05-04.sql: budget_ledger + RLS
- src/services/budget_service.py: Token Budget Hard Kill 三層防線
- src/core/context.py: PROJECT_ID ContextVar（31 background loop 自動繼承）
- src/db/base.py + models.py: project_id 欄位 + RLS set_config 注入
- src/hermes/nl_gateway.py: project_id Redis key 前綴（Phase A 雙寫）
- src/services/anomaly_counter.py: per-project 改造（Phase A fallback）

## Phase 4: Platform Shell in Shadow Mode
- awooop_phase4_run_state_2026-05-04.sql: run_state + step_journal + idempotency
- src/services/run_state_machine.py: 8-state FSM + SKIP LOCKED + stale reaper
- src/services/platform_runtime.py: UUID v7 + W3C trace_id + shadow_execute
- src/services/audit_sink.py: PII/secret redaction 9 patterns
- src/api/v1/platform/runs.py: POST/GET /v1/platform/runs（Router→Service 架構）
- src/workers/platform_worker.py: SKIP LOCKED worker + heartbeat + reaper loop
- src/main.py: platform router + lifespan worker start/stop

## Phase 5: MCP Gateway 五閘門
- awooop_phase5_mcp_gateway_2026-05-04.sql: 4 表 + RLS
- src/plugins/mcp/gateway.py: McpGateway（Gate 1~5, E-MCP-GATE-001~009）
- src/plugins/mcp/redaction_middleware.py: 雙層 redaction + 16K 截斷
- src/plugins/mcp/registry.py: __provider name mangling（ADR-116）
- src/plugins/mcp/credential_resolver.py: k8s secret ref 解析
- tests/test_mcp_credential_isolation.py: 10 個迴歸測試（secret leak 防再現）

## Phase 6-8: EwoooC + Channel Hub + Approval Token
- awooop_phase6_ewoooc_onboarding_2026-05-04.sql: ewoooc tenant + 4 read-only MCP tools
- awooop_phase7_channel_hub_2026-05-04.sql: conversation_event + outbound_message
- src/services/provider_proxy.py: ProviderProxy + PlatformEnvelope（ADR-115）
- src/services/channel_hub.py: Telegram inbound mirror + Progressive Feedback（30s）
- src/services/awooop_approval_token.py: HS256 + jti NX replay 防護 + suggest mode

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

apps/api/src/core/context.py

@@ -0,0 +1,22 @@
+"""AwoooP Phase 2.4: Project ID Context Variable
+================================================
+2026-05-04 ogt + Claude Sonnet 4.6（ADR-123 background loop tagging）
+
+設計原則：
+- Python asyncio.create_task() 自動繼承父任務的 ContextVar 值
+- startup handler 設一次 PROJECT_ID.set("awoooi")，所有 31 個 loop 自動繼承
+- get_db_context() 讀此 contextvar 作為 fallback，確保 RLS SET LOCAL 正確
+- 多租戶未來：呼叫端傳入不同 project_id 即可隔離，無需改 loop 本體
+"""
+from __future__ import annotations
+
+from contextvars import ContextVar
+
+# 追蹤當前非同步任務的 project_id
+# default="awoooi" 確保未設時也能正常查詢（RLS fail-open 保護）
+PROJECT_ID: ContextVar[str] = ContextVar("project_id", default="awoooi")
+
+
+def get_current_project_id() -> str:
+    """取得當前任務的 project_id（給 service 層使用）"""
+    return PROJECT_ID.get()