fix: reorganize README.md to improve demo section visibility and remove duplicates

fix: update README.md for clarity and accuracy, including technology details and deployment information

fix: update CloudFront invalidation pattern to clear all cached files

fix: add cache-busting headers and update resource links in index.html for versioning

MAJOR release

fix: update pubspec.yaml to include package_info_plus and display app version on HomeScreen

fix: add microphone permission handling and user prompts in STTWidget

fix: update package versions and sha256 checksums in pubspec.lock

fix: enhance OpenAI interaction by adding response timeout handling in STTWidget

fix: remove unused listening animation and simplify STTWidget's animation handling

fix: improve TTS integration and enhance response handling in speech components

fix: integrate TextToSpeechCloud into HomeScreen and enhance TTS error handling

fix: clean up imports and refactor parameter types in GoogleCloudRepository

fix: enhance STTWidget with animated microphone button and improved UI

fix: center the primary STTWidget button within its container