Detach --background launches from terminals with quieter runtime output, make wrapper/plugin overlay start explicit, and allow trailing commas in JSONC configs for safer hot-reload edits. Includes pending Anki/docs/backlog updates in this unreleased batch.
- launcher/types.ts: shared types, interfaces, and constants
- launcher/log.ts: logging infrastructure (COLORS, log, fail, etc.)
- launcher/util.ts: pure utilities, lang helpers, and child process runner
- runExternalCommand accepts childTracker param instead of referencing state
- inferWhisperLanguage placed in util.ts to avoid circular deps
