Lark adapter was already implemented in Go (lark.go — outbound Custom Bot
webhook + inbound Event Subscriptions with constant-time token verify),
but the Canvas connect-form hardcoded a Telegram-shaped pair of inputs
(bot_token + chat_id). Selecting "Lark / Feishu" from the dropdown
silently sent the wrong field names — there was no way to enter a
webhook URL.
Fix: move form shape to the server.
- Add `ConfigField` struct + `ConfigSchema()` method to the
`ChannelAdapter` interface. Each adapter declares its own fields with
label/type/required/sensitive/placeholder/help.
- Implement per-adapter schemas:
- Lark: webhook_url (required+sensitive) + verify_token (optional+sensitive)
- Slack: bot_token/channel_id/webhook_url/username/icon_emoji
- Discord: webhook_url + optional public_key
- Telegram: bot_token + chat_id (unchanged UX, keeps Detect Chats)
- Change `ListAdapters()` to return `[]AdapterInfo` with config_schema
inline. Sorted deterministically by display name so UI ordering is
stable across Go's random map iteration.
- Update the 3 existing `ListAdapters` test sites to struct access.
Canvas (`ChannelsTab.tsx`):
- Replace the two hardcoded bot_token/chat_id inputs with a single
schema-driven `SchemaField` component. Renders one input per field in
the order the adapter returns them.
- Form state becomes `formValues: Record<string,string>` keyed by
`ConfigField.key`. Values reset on platform-switch so stale
Telegram credentials can't leak into a new Lark channel.
- "Detect Chats" stays but only renders for platforms in
`SUPPORTS_DETECT_CHATS` (Telegram only — the only provider with
getUpdates).
- Only schema-known keys are posted in `config`, scrubbing any stale
values from previous platform selections.
Regression tests:
- `TestLark_ConfigSchema` locks in the 2-field Lark contract with the
required/sensitive flags correctly set.
- `TestListAdapters_IncludesLark` confirms registry wiring + schema
survives round-trip through ListAdapters.
Known pre-existing `TestStripPluginMarkers_AwkScript` failure in
internal/handlers is unrelated to this change (verified via stash+test
on clean staging).
Co-Authored-By: Claude Opus 4.7 (1M context) <noreply@anthropic.com>
