feat: per-channel responsePrefix override (#9001)
* feat: per-channel responsePrefix override
Add responsePrefix field to all channel config types and Zod schemas,
enabling per-channel and per-account outbound response prefix overrides.
Resolution cascade (most specific wins):
L1: channels.<ch>.accounts.<id>.responsePrefix
L2: channels.<ch>.responsePrefix
L3: (reserved for channels.defaults)
L4: messages.responsePrefix (existing global)
Semantics:
- undefined -> inherit from parent level
- empty string -> explicitly no prefix (stops cascade)
- "auto" -> derive [identity.name] from routed agent
Changes:
- Core logic: resolveResponsePrefix() in identity.ts accepts
optional channel/accountId and walks the cascade
- resolveEffectiveMessagesConfig() passes channel context through
- Types: responsePrefix added to WhatsApp, Telegram, Discord, Slack,
Signal, iMessage, Google Chat, MS Teams, Feishu, BlueBubbles configs
- Zod schemas: responsePrefix added for config validation
- All channel handlers wired: telegram, discord, slack, signal,
imessage, line, heartbeat runner, route-reply, native commands
- 23 new tests covering backward compat, channel/account levels,
full cascade, auto keyword, empty string stops, unknown fallthrough
Fully backward compatible - no existing config is affected.
Fixes #8857
* fix: address CI lint + review feedback
- Replace Record<string, any> with proper typed helpers (no-explicit-any)
- Add curly braces to single-line if returns (eslint curly)
- Fix JSDoc: 'Per-channel' → 'channel/account' on shared config types
- Extract getChannelConfig() helper for type-safe dynamic key access
* fix: finish responsePrefix overrides (#9001) (thanks @mudrii)
* fix: normalize prefix wiring and types (#9001) (thanks @mudrii)
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Co-authored-by: Gustavo Madeira Santana <gumadeiras@gmail.com>
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