chore(deps): upgrade cpal from 0.15.3 (fork) to 0.17.1 (official)

[louis030195]

Summary

• Upgrades cpal from Kree0/cpal fork (0.15.3) to official cpal 0.17.1
• Upgrades deepgram from 0.6.4 to 0.7.0 (resolves rodio/cpal version conflict)
• Removes ScreenCaptureKit host workaround - cpal 0.17+ has native loopback support

Why this matters

• No more fork dependency - Using official cpal means better maintenance and updates
• Native macOS loopback - cpal 0.17+ supports recording system audio on macOS 14.2+ natively
• Cleaner codebase - Removed ~370 lines of ScreenCaptureKit workaround code

API changes in cpal 0.17

• sample_rate() returns u32 directly (was SampleRate struct with .0 field)
• device.name() deprecated in favor of device.description() (kept for compat, shows warnings)

macOS loopback recording

Before (Kree0 fork)	After (cpal 0.17)
Separate ScreenCaptureKit host	Native CoreAudio loopback
macOS 14+	macOS 14.2+
Custom retry logic needed	Built-in aggregate device

Test plan

• cargo build -p screenpipe-audio passes
• cargo build -p screenpipe-server passes
• cargo test -p screenpipe-audio passes
• CI builds pass on macOS, Linux, Windows
• Manual test: loopback audio capture on macOS 14.2+

Breaking changes

• Requires macOS 14.2+ for loopback (was 14.0+)
• If users relied on ScreenCaptureKit host ID, that's removed

🤖 Generated with Claude Code