Add LINE channel adapter with webhook ingress and gating

docs/plans/2026-02-16-line-channel-adapter-checklist.md

@@ -0,0 +1,58 @@
+# LINE Channel Adapter Checklist
+
+**Date:** 2026-02-16  
+**Scope:** Close the first item in the LINE/Feishu/Zalo channel gap set by implementing LINE.
+
+## Goal
+
+Add a production-safe LINE channel adapter with webhook ingress, signature verification, outbound send path, mention/allowlist gating, and daemon/gateway wiring.
+
+## Implemented
+
+- Added new LINE adapter:
+  - `src/channels/line/adapter.ts`
+  - `src/channels/line/index.ts`
+- Added webhook ingress on gateway:
+  - `POST /line/events` routed to adapter handler.
+- Added daemon registration:
+  - config-driven adapter creation in `registerChannels()`
+  - gateway webhook handler binding via `setLineHandler()`
+- Added config schema:
+  - `line.channel_access_token`
+  - `line.channel_secret`
+  - `line.allowed_source_ids`
+  - `line.require_mention`
+  - `line.mention_name`
+- Added service discovery listing:
+  - `line` channel now appears in `system.services`.
+- Added docs/config examples:
+  - `README.md`
+  - `config/default.yaml`
+
+## Security/Safety
+
+- Verifies `x-line-signature` using HMAC-SHA256 + `channel_secret`.
+- Applies source allowlist (`allowed_source_ids`) when configured.
+- Applies mention gating (`require_mention` + `mention_name`) for group/room contexts.
+
+## Tests
+
+- `src/channels/line/adapter.test.ts`
+  - inbound signature validation
+  - mention gating behavior
+  - outbound push API call
+  - invalid signature rejection
+- `src/daemon/channels.test.ts`
+  - LINE adapter registration + gateway handler binding.
+- `src/config/schema.test.ts`
+  - LINE config parsing/defaults.
+- `src/gateway/handlers/services.test.ts`
+  - LINE service presence in discovery output.
+
+## Validation Run
+
+```bash
+pnpm test:run src/channels/line/adapter.test.ts src/daemon/channels.test.ts src/config/schema.test.ts src/gateway/handlers/services.test.ts
+pnpm typecheck
+pnpm build
+```

docs/plans/state.json

@@ -594,6 +594,32 @@
       ],
       "test_status": "pnpm test:run src/gateway/protocol.test.ts src/gateway/handlers/node.test.ts src/gateway/server.test.ts src/gateway/auth.test.ts src/gateway/handlers/handlers.test.ts src/config/schema.test.ts + pnpm typecheck + pnpm build passing"
     },
+    "line-channel-adapter": {
+      "file": "2026-02-16-line-channel-adapter-checklist.md",
+      "status": "completed",
+      "date": "2026-02-16",
+      "updated": "2026-02-16",
+      "summary": "Implemented LINE channel adapter with webhook ingress (`/line/events`), HMAC signature validation, mention/allowlist gating, outbound push messaging, daemon registration/wiring, and services discovery visibility.",
+      "files_created": [
+        "docs/plans/2026-02-16-line-channel-adapter-checklist.md",
+        "src/channels/line/adapter.ts",
+        "src/channels/line/adapter.test.ts",
+        "src/channels/line/index.ts"
+      ],
+      "files_modified": [
+        "src/channels/index.ts",
+        "src/daemon/channels.ts",
+        "src/daemon/channels.test.ts",
+        "src/config/schema.ts",
+        "src/config/schema.test.ts",
+        "src/gateway/server.ts",
+        "src/gateway/handlers/services.ts",
+        "src/gateway/handlers/services.test.ts",
+        "README.md",
+        "config/default.yaml"
+      ],
+      "test_status": "pnpm test:run src/channels/line/adapter.test.ts src/daemon/channels.test.ts src/config/schema.test.ts src/gateway/handlers/services.test.ts + pnpm typecheck + pnpm build passing"
+    },
     "qmd-backend": {
       "file": "2026-02-16-qmd-backend-checklist.md",
       "status": "completed",
@@ -3155,7 +3181,7 @@
     }
   },
   "overall_progress": {
-    "total_test_count": 1795,
+    "total_test_count": 1802,
     "all_tests_passing": true,
     "p0_completion": "3/3 (100%)",
     "p1_completion": "4/4 (100%)",
@@ -3170,12 +3196,12 @@
     "tier2_completion": "4/4 (100%) — inbound webhooks, vector memory search, Dockerfile, heartbeat monitor",
     "tier3_completion": "5/5 (100%) — lane queue, credential redaction, web UI token dashboard, xAI (Grok) provider, Voyage AI embeddings",
     "tier4_completion": "4/4 (100%) — gateway lock, shell completion, Tailscale Serve/Funnel, DM pairing codes",
-    "feature_gap_scorecard": "123/128 match (96%), 0 partial (0%), 5 missing (4%)",
+    "feature_gap_scorecard": "124/128 match (97%), 0 partial (0%), 4 missing (3%)",
     "operator_dx_milestone": "Phase 3 (Live Ops Dashboard): 2/2 plans complete — milestone done",
     "gmail_auth_cli": "flynn gmail-auth command implemented with OAuth2 flow, doctor check, config routed to Telegram",
     "native_audio_support": "completed — smart routing for native audio (Gemini/OpenAI/GitHub) vs Whisper transcription fallback",
     "remaining_phases_completion": "Phase 1: 3/3 (100%) — context levels, command registry, memory structure. Phase 2: 3/3 (100%) — component registry, confidence routing, history index. Phase 3: 2/2 (100%) — adaptive memory/compaction, truthfulness/autonomy hardening",
-    "next_up": "OpenClaw gap: LINE/Feishu/Zalo channel adapter set (open next scoped implementation checklist)"
+    "next_up": "OpenClaw gap: Feishu channel adapter (open next scoped implementation checklist)"
   },
   "soul_md_and_cron_create": {
     "date": "2026-02-11",