refactor(i18n): remove C() and move intents to test-only
Breaking change: Remove C() semantic intent composition API.
- Remove C() global function and Service.C() method
- Remove IntentBuilder fluent API (I(), For(), Compose(), etc.)
- Move coreIntents from intents.go to intents_test.go (test data only)
- Remove C() from Translator interface
Replace intent-based CLI helpers with grammar composition:
- ConfirmIntent → ConfirmAction(verb, subject)
- ConfirmDangerous → ConfirmDangerousAction(verb, subject)
- QuestionIntent → QuestionAction(verb, subject)
- ChooseIntent → ChooseAction(verb, subject, items)
- ChooseMultiIntent → ChooseMultiAction(verb, subject, items)
The intent definitions now serve purely as test data to verify
the grammar engine can compose identical strings.
Co-Authored-By: Claude Opus 4.5 <noreply@anthropic.com>
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