stt.api 0.3.0

• stt() gains a source axis (“auto”, “api”, “package”), mirroring tts.api’s split of which engine from where it runs. The default (“auto”) reproduces the previous behavior (whisper in-process, openai via the API), so existing calls are unchanged. backend = "whisper", source = "api" reaches a self-hosted whisper serve() endpoint (set the URL with set_stt_base()).
• The API backend now requests and parses word-level timestamps: with response_format = "verbose_json" it sends timestamp_granularities[] for both segment and word and returns result$words (word/start/end), matching the native whisper backend. Works against OpenAI and a self-hosted whisper::serve().
• stt() results now carry a "call_record" attribute (cornball_sidecar v1, matching tts.api/xtx.api): the resolved request, the backend/source actually used, elapsed seconds, and a timestamp. Callers that serialize the result keep its provenance with it.

stt.api 0.2.0

• Remove audio.whisper backend
• Remove gpu.ctl integration
• Remove processx dependency (never implemented)
• Backends are now: whisper (native R torch) and OpenAI-compatible API

stt.api 0.1.0

• Initial release
• Support for OpenAI-compatible speech-to-text APIs
• Local server support (LM Studio, OpenWebUI, Whisper containers)
• Optional whisper package integration for local transcription
• Segment-level timestamps with word-level timing when available