chore: bump version to 0.7.1

[jatinkrmalik]

Summary

Prepares the v0.7.1 patch release, focused on push-to-talk, microphone-route, and transcription reliability.

Changes since v0.7.0

PR	Type	Summary
#173	fix	Prevent hotkey recording hangs and recover cleanly from slow audio startup
#175	fix	Tolerate headset input route churn during recording startup
#182	fix	Retry empty custom-vocabulary transcriptions without the prompt
#180	fix	Restore Settings window resizing
#184	fix	Reject silent microphone captures and show actionable input guidance
#178	fix	Keep the audio engine warm briefly and reset silent input routes
#179	ci	Add automated issue and pull-request classification
#185	ci	Relax the flaky main-actor blocking test threshold
—	docs	Update README Star History chart links

Files updated

• scripts/build.sh — default app and Info.plist version is now 0.7.1
• web/layouts/index.html — JSON-LD and hero badge versions are now 0.7.1

Validation

• swift test — 227 tests passed, 1 environment-dependent accessibility test skipped
• ./scripts/build.sh release — release app bundle built successfully
• Verified CFBundleVersion and CFBundleShortVersionString are both 0.7.1
• The affected users confirmed the audio-route fix works in the current nightly

Release plan after merge

• Tag v0.7.1 and push the tag; release.yml will build, sign, notarize, and create the draft GitHub Release
• Paste the polished out-of-tree release notes into the draft and review the generated artifacts
• Publish the release after final review, then remove the local scratch notes