chore: release v1.2.0

[1313]

🤖 New release

• screencapturekit: 1.1.0 -> 1.2.0

Changelog

1.2.0 - 2025-11-28

Added

• implement synchronous error propagation for stream operations
• add AsyncSCScreenshotManager for async screenshot capture

Fixed

• add macOS 14.0 availability check for updateConfiguration
• (ffi) add backticks to doc comments for clippy
• (tests) initialize CoreGraphics for headless CI environments
• resolve clippy warnings with --all-features
• add semicolon to satisfy clippy lint
• resolve all clippy warnings
• use correct FFI function for async shareable content

Other

• separate lint job from per-platform build matrix
• fix formatting issues
• replace builder pattern with mutable configuration
• update content_sharing_picker to use SyncCompletion
• unify async completion patterns with AsyncCompletion
• unify sync completion patterns across codebase
• fix formatting issues
• consolidate workflows into single CI pipeline
• replace mpsc channel with Mutex+Condvar in content sharing picker
• replace mpsc channel with Mutex+Condvar in screenshot manager
• update version to 1.1 in README

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