Implement remaining dictation mode combinations #10
Description
Context: The STT pipeline spec notes only local stream + local second pass is implemented and all other mode combinations are TODO.
Scope:
- Define and implement the remaining supported mode combinations.
- Ensure mode routing is correct for each combination.
- Keep the UI contract stable (
live_render,segment_end).
Reference: docs/spec/core/stt_dictation_pipeline.md (Implementation Status).
Acceptance:
- Document which mode combinations are supported.
- Implement routing for the missing combinations.
- Add any required tests or validation notes in the spec.