feat:Implemented the new control layout with animated mic ripple and …

[fbraza]

Description

Mic Button & Animation

• Rebuilt the control row to center a gradient Icons.mic button that launches/stops recording.
• When RecordingState.recording, a 3-layer pulse animation loops via AnimationController to mimic the reference ripple; paused/stopped states halt the animation so the mic stays calm.

Contextual Actions

• Added side buttons that fade in only while a session is active (recording or paused): left toggles pause/ resume, right discards via a trash icon. Idle/stopped states hide both, keeping the mic centered.
• Updated the screen wiring to provide explicit callbacks (_handleMicTap, pause/resume/discard) and revised the ViewModel to manage a RecordingState enum plus discardRecording().

State Logic Enhancements

• ViewModel now tracks recordingState, resets timers on stop/discard, and clears waveform data when discarding
  for a clean restart.

Tests & Dependencies

• Expanded unit tests to cover the new state transitions and discard behavior; added widget tests verifying button visibility/toggling with localization support.
• Added flutter_localizations for tooltip/localization needs referenced by the controls
• flutter test passes.

[chatgpt-codex-connector]

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[chatgpt-codex-connector]

[P1] Waveform continues updating while recording is paused or discarded

The new recording state logic clears waveformData and resets the timer when a session is paused, stopped, or discarded, but _VoiceToTextViewState still schedules _waveformTimer in initState and never cancels or gates it based on recordingState. As a result, _pushWaveformSample keeps publishing random samples even after discardRecording() has emptied the waveform or when the state is paused/stopped, so the UI immediately repopulates with a live waveform and the “clear” action has no visible effect. Consider starting the periodic sampler only while RecordingState.recording or checking the state before pushing samples so the waveform can actually freeze or clear when recording is inactive.

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