Bare numeric Discord IDs (e.g. '1470130713209602050') in cron
delivery.to caused 'Ambiguous Discord recipient' errors and silent
delivery failures.
Adds normalizeDiscordOutboundTarget() to the existing Discord
normalize module (channels/plugins/normalize/discord.ts) alongside
normalizeDiscordMessagingTarget. Defaults bare numeric IDs to
'channel:<id>', matching existing behavior.
Both the Discord extension plugin and standalone outbound adapter
use the shared helper via a one-liner resolveTarget.
Fixes#14753. Related: #13927
* TypeScript: add extensions to tsconfig and fix type errors
- Add extensions/**/* to tsconfig.json includes
- Export ProviderAuthResult, AnyAgentTool from plugin-sdk
- Fix optional chaining for messageActions across channels
- Add missing type imports (MSTeamsConfig, GroupPolicy, etc.)
- Add type annotations for provider auth handlers
- Fix undici/fetch type compatibility in zalo proxy
- Correct ChannelAccountSnapshot property usage
- Add type casts for tool registrations
- Extract usage view styles and types to separate files
* TypeScript: fix optional debug calls and handleAction guards
