Add re-paste last transcription hotkey

[topmonroe9]

Summary

When transcribed text doesn't paste correctly — the user may have switched windows, the target app may not have been focused, or clipboard paste may have failed — there's currently no way to re-insert the last transcription without recording again.

This adds a configurable repaste_key hotkey (default: ctrl+shift+v) that re-inserts the last transcribed text on demand.

• New config option repaste_key in recording_options — auto-appears in settings UI
• Refactored KeyListener from single chord to named chords dict, enabling multiple independent hotkeys
• Stores last transcription result for re-use
• Releases held modifier keys before typing to prevent interference (e.g. Ctrl+Shift still held when callback fires)
• Repaste is ignored while recording/transcribing is in progress
• Leave repaste_key empty in settings to disable

Note: The default ctrl+shift+v may conflict with "paste without formatting" in some applications. Users can change the hotkey in settings to avoid conflicts.

Files changed

File	Change
src/config_schema.yaml	Add repaste_key option
src/key_listener.py	Refactor single chord → named chords dict
src/input_simulation.py	Add release_held_modifiers()
src/main.py	Store last transcription, add on_repaste(), update callback API

Test plan

• Activation hotkey still works (record + transcribe)
• Press ctrl+shift+v after transcription — last text re-inserted
• Press repaste key with no prior transcription — silently does nothing
• Press repaste key while recording — ignored
• Settings UI shows the new repaste_key field
• Change repaste key in settings, restart, verify new key works
• Leave repaste key empty — feature disabled, no errors

🤖 Generated with Claude Code