* feat(channels): add comprehensive channel matrix tests and bump to v0.2.2
Add 50 integration tests covering the full Channel trait contract across
all 16 platforms: identity semantics, threading, draft lifecycle, reactions,
pinning, concurrency, edge cases, and cross-channel routing. Bump version
to 0.2.2.
Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>
* style: fix rustfmt formatting in channel matrix tests
Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>
* fix(lint): remove empty line after doc comment in channel matrix tests
Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>
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Co-authored-by: Claude Opus 4.6 <noreply@anthropic.com>
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