* feat(channels): add dmPolicy config to disable private/DM messages
Add DmGate class mirroring GroupGate to gate DM/private messages in
channel adapters. Operators can now set dmPolicy: 'disabled' in their
channel config to silently drop all DM messages while keeping group
messages active.
Closes#6392
* fix(channels): address review feedback for dmPolicy
- Add dmPolicy: 'open' to all test config factories (8 files) to
maintain type correctness with required ChannelConfig field
- Add integration tests in ChannelBase.test.ts:
- preflightInbound: DM dropped + group passes when dmPolicy=disabled
- isStoredLoopTargetAuthorized: DM loop job disabled + group passes
- Add dmPolicy assertions in config-utils.test.ts (default + explicit)
- Keep dmPolicy as required field (not optional) for strict parity
with groupPolicy
- Add comprehensive developer guide for building channel plugins
- Add user-facing docs for installing/configuring custom channel plugins
- Replace custom-channels.md with new plugins.md
- Rename @qwen-code/channel-mock to @qwen-code/channel-plugin-example
- Add messageId field to Envelope type for response correlation
This provides clear documentation for developers building custom channel
adapters and renames the mock package to better reflect its purpose as
a reference implementation example.
Co-authored-by: Qwen-Coder <qwen-coder@alibabacloud.com>