UPDATE: Switch landing page to use VoiceCal LinkedIn diagram

REBRAND: Update UI from ChatCal.ai to VoiceCal.ai

UX: Add back buttons to LinkedIn diagram and fix instruction visibility

FEATURE: Add LinkedIn diagram and improve chat widget UX

FIX: Server-side format conversion for Groq STT compatibility

FIX: Use Groq-compatible audio codecs (AAC for MP4, Opus for OGG)

FEATURE: Smart MediaRecorder format detection for Groq STT compatibility

TEST: Try opus filename extension for Groq STT compatibility

CRITICAL FIX: Use original WebM blob directly for STT transcription

FIX: Inline base64 to blob conversion for STT audio data

REVERT: Back to original working STT implementation

FIX: Correct STT audio file format from .wav to .webm

CRITICAL FIX: Add missing base64ToBlob method for STT functionality

FIX: Add missing File, UploadFile imports for Groq STT endpoint

FEATURE: Groq STT Integration - Replace HuggingFace with Groq Whisper

FEATURE: Enhanced TTS interruption with intelligent noise filtering

UPDATE: Change default TTS voice from Fritz-PlayAI to Cheyenne-PlayAI

FIX: Groq TTS voice parameter validation and error handling

MAJOR: Replace Kyutai TTS with Groq TTS for improved performance and reliability

REMOVE: Email confirmation logic - email now provided from landing page

FEATURE: Implement TTS speech interruption for better user experience

Add comprehensive backend debugging for email session storage

Add enhanced debugging for email parameter flow investigation

Improve UX: Move audio visualizer below text box and adjust mute button positioning

Add dedicated Mute/Unmute toggle button for clear recording control

Fix microphone button UX - make it a transcription trigger, not recording toggle

Implement TTS-aware microphone control to prevent feedback loops

MAJOR: Implement continuous listening UX with auto-start recording

Fix JavaScript regex syntax error causing 'Loading...' issue

Simplify JavaScript regex patterns to avoid Python syntax warnings

Fix JavaScript regex syntax errors blocking page initialization

Fix email display regex bug - stop at bullet points

Force refresh email display with visible styling and cache busting

Fix user email display label and data retrieval

Move user email display to prominent header location

Add user email display to chat interface

Fix microphone button visibility and positioning

Add user information display panel

Position record button adjacent to text input for optimal UX

Reposition floating record button for better accessibility

Make record button float to stay accessible during conversation

Fix Google Meet links and fireworks celebration

Add fireworks celebration and automatic redirect after successful booking

Add 'agenda' to step 2 of booking instructions

Update chat widget welcome message to emphasize voice interaction

Add extensive debugging for landing page email parameter flow

Add email reminder banner for users who bypass landing page form

Add email collection form to landing page with chat integration

Remove TTS queue preemption - let current audio finish before next item

Disable keyboard/ESC key interrupt for TTS voice stream