feat(kook): add eba adapter

docs/event-based-agents/adapters/kook.md

@@ -0,0 +1,108 @@
+# KOOK EBA Adapter
+
+## Status
+
+KOOK has been migrated to the EBA adapter directory:
+
+```text
+src/langbot/pkg/platform/adapters/kook/
+├── adapter.py
+├── api_impl.py
+├── event_converter.py
+├── manifest.yaml
+├── message_converter.py
+├── platform_api.py
+└── types.py
+```
+
+The adapter is registered as `kook-eba`.
+
+## Configuration
+
+| Field | Required | Default | Description |
+|-------|----------|---------|-------------|
+| `token` | Yes | `""` | KOOK bot token. |
+| `enable-stream-reply` | Yes | `false` | Reserved for shared platform configuration compatibility. |
+
+## Events
+
+| Event | Evidence | Notes |
+|-------|----------|-------|
+| `message.received` | `plugin-e2e-ui` | Real KOOK UI channel message reached `EBAEventProbe` as `MessageReceivedEvent`. |
+| `platform.specific` | `plugin-e2e-ui` | KOOK gateway event without a common EBA mapping reached `EBAEventProbe` as `PlatformSpecificEventReceived`. |
+
+## Common APIs
+
+| API | Evidence | Notes |
+|-----|----------|-------|
+| `send_message` | `plugin-e2e-outbound` | Probe plugin sent channel messages through SDK `send_message`; KOOK returned message IDs. |
+| `reply_message` | `unit` | Supports `reply_msg_id` and optional quoted replies when the source message ID is available. |
+| `get_message` | `plugin-e2e-outbound` | Probe plugin fetched the cached triggering message. |
+| `get_group_info` | `plugin-e2e-outbound` | Probe plugin received cached KOOK channel info. |
+| `get_group_list` | `plugin-e2e-outbound` | Probe plugin received cached channel/group entities observed by the adapter. |
+| `get_group_member_info` | `plugin-e2e-outbound` | Probe plugin received cached sender info as a group member. |
+| `get_user_info` | `plugin-e2e-outbound` | Probe plugin received cached sender user info. |
+| `get_friend_list` | `plugin-e2e-outbound` | Probe plugin received cached users. |
+| `upload_file` | `unit` | Uses KOOK `asset/create` and returns URL/ID. |
+| `get_file_url` | `unit` | KOOK media IDs are URL-like in the adapter path; returns the ID unchanged. |
+| `delete_message` | `unit` | Calls KOOK delete endpoints. Live permission verification is still required. |
+| `forward_message` | `plugin-e2e-outbound` | Probe plugin sent flattened forward content through SDK `send_message`. |
+| `call_platform_api` | `plugin-e2e-outbound` | Probe plugin called safe KOOK platform-specific APIs through SDK `call_platform_api`. |
+
+## Platform-Specific APIs
+
+| Action | Evidence | Notes |
+|--------|----------|-------|
+| `get_current_user` | `plugin-e2e-outbound` | Probe plugin called `user/me`. |
+| `get_user` | `plugin-e2e-outbound` | Probe plugin called `user/view` for the triggering sender. |
+| `get_channel` | `plugin-e2e-outbound` | Probe plugin called `channel/view` for the triggering channel. |
+| `get_guild` | `plugin-e2e-outbound` | Probe plugin called `guild/view`; gateway URLs redact token query values. |
+| `get_gateway` | `plugin-e2e-outbound` | Probe plugin called `gateway/index`; returned token query values are redacted. |
+| `send_direct_message` | `unit` | Calls `direct-message/create`. |
+
+## Components
+
+| Component | Receive Evidence | Send Evidence | Notes |
+|-----------|------------------|---------------|-------|
+| `Source` | `plugin-e2e-ui` | N/A | KOOK message ID and timestamp are preserved. |
+| `Plain` | `plugin-e2e-ui` | `plugin-e2e-outbound` | Text and KMarkdown are represented as plain common text. |
+| `At` | `plugin-e2e-ui` | `plugin-e2e-outbound` | KOOK `(met)<id>(met)` mentions map to common `At`. |
+| `AtAll` | `unit` | `plugin-e2e-outbound` | KOOK `(met)all(met)` maps to common `AtAll`; real inbound UI AtAll was not tested. |
+| `Image` | `unit` | `unit` | URL/image ID based path only; live rendering still needs verification. |
+| `Voice` | `unit` | `unit` | URL based path only; live rendering still needs verification. |
+| `File` | `unit` | `unit` | URL based path only; upload API is exposed separately. |
+| `Forward` | `unit` | `unit` | Outbound forwards are flattened; inbound structured forwards are not exposed by current legacy implementation. |
+| `Unknown` | `unit` | N/A | Unsupported KOOK message types become `Unknown` or `PlatformSpecificEvent`. |
+
+## Acceptance Record
+
+Test date: June 4, 2026.
+
+Plugin E2E verified on June 4, 2026 with `EBAEventProbe`, SDK standalone runtime, KOOK WebSocket adapter, and a real KOOK channel UI message.
+
+Evidence:
+
+- JSONL: `data/temp/kook_eba_plugin_probe.jsonl`
+- Plugin log: `data/logs/eba-probe-kook.log`
+
+Observed and verified:
+
+- A real KOOK UI channel message reached the plugin as `MessageReceived` with `bot_uuid=7ab5b065-6e4e-4def-95f0-3c265366e26f`, `adapter_name=kook`, common sender/group/chat fields, and common `MessageChain` components.
+- KOOK gateway-specific event reached the plugin as `PlatformSpecificEventReceived`.
+- Probe plugin called SDK `send_message`; KOOK returned message IDs for text, At, AtAll, image URL/base64 fallback path, quote fallback, file fallback, and flattened forward cases.
+- Probe plugin called common API methods through the SDK path: `get_message`, `get_user_info`, `get_friend_list`, `get_group_info`, `get_group_list`, and `get_group_member_info`.
+- Probe plugin called safe KOOK platform-specific APIs through SDK `call_platform_api`: `get_current_user`, `get_user`, `get_channel`, `get_gateway`, and `get_guild`.
+
+Run:
+
+```bash
+uv run pytest tests/unit_tests/platform/test_kook_eba_adapter.py
+git diff --check
+```
+
+Blocked or partial items:
+
+- `plugin-e2e-ui` inbound coverage for image, file, voice, AtAll, quote, and forward.
+- `plugin-e2e-outbound` visual verification in KOOK UI for image/file/voice rendering. KOOK returned message IDs, but UI inspection was not performed in this run.
+- `reply_message` and `delete_message` live permission verification.
+- Destructive or permission-sensitive APIs were not declared beyond delete; KOOK mute/kick/leave remain explicit `NotSupportedError` paths until a safe fixture is available.