chore: bump version to v0.3.0-beta

[jatinkrmalik]

v0.3.0-beta Release Preparation

VocaMac moves from Alpha to Beta! The app has been stable under continuous daily use, with significant bug fixes and new features since v0.2.0.

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🚀 What's New

New Features

• Launch at Login — Start VocaMac automatically when you log in, powered by the modern SMAppService API. Toggle in Settings → General → Behavior or during the Setup Wizard. (feat: add Launch at Login toggle using SMAppService #63)
• Auto-detect permission changes — Accessibility and Input Monitoring permissions are now detected automatically within seconds of being granted. No more restarting the app or clicking "Recheck Permissions". (fix: auto-detect accessibility permission changes without restart #64)

Bug Fixes

• Fixed audio buffer truncation — Recording no longer cuts off the last few seconds of speech. Audio frames are now always buffered before silence/max-duration checks, ensuring no audio is ever lost. (fix: prevent audio truncation and eliminate recording start delay #61)
• Eliminated recording start delay — Removed the ~1 second lag between pressing the hotkey and the mic activating. The blocking playStartSoundAsync() call has been replaced with fire-and-forget playback. (fix: prevent audio truncation and eliminate recording start delay #61)
• Fixed #Preview CLI build error — Wrapped SwiftUI preview macros in #if DEBUG to allow building with Xcode Command Line Tools only. Thanks to @slatlasdev! (fix: wrap #Preview in #if DEBUG to fix CLI build without full Xcode #62)

Website

• Migrated to Hugo — The marketing website is now built with Hugo for easy content management and template reuse. (feat: migrate website to Hugo static site generator #66)
• 12 feature deep-dive pages — Every feature tile on the homepage links to a comprehensive, SEO-optimized page. (feat: add feature deep-dive pages for all 12 feature tiles #67)
• Updated content — Fixed license (MIT → AGPL-3.0), added missing features, screenshots page, direct DMG download, Google Analytics. (docs: update website with missing features, screenshots page, UI polish, and SEO #65)

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📋 Version Bump Details

File	Change
scripts/build.sh	CFBundleVersion + CFBundleShortVersionString: 0.2.0 → 0.3.0
SettingsView.swift	About tab: "Version 0.2.0 (Alpha)" → "Version 0.3.0 (Beta)"
web/layouts/index.html	JSON-LD, hero badges, install text, Voca Family card
README.md	Platform table: 🚧 Alpha → 🚀 Beta
web/static/style.css	.badge--alpha → .badge--beta (red → green theme)

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🙏 Contributors

Thank you to everyone who contributed to this release:

• @jatinkrmalik — Launch at Login, audio buffer fix, recording delay fix, permission polling, website overhaul
• @slatlasdev — Fixed #Preview macro build error for CLI-only environments (fix: wrap #Preview in #if DEBUG to fix CLI build without full Xcode #62)

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📦 Release Checklist

After merging this PR:

1. git tag v0.3.0 on main
2. git push origin v0.3.0
3. Create GitHub Release with tag v0.3.0
4. Attach DMG artifact from the release workflow
5. Website deploys automatically (Hugo build in CI)