Gate channel tasks experiment #6505

Job	Run time
Dead Token Reference Guard	1s
Detect Changed Paths	1s
Desktop E2E Relay	1s
Server Cross-Compile	1s
Windows Rust (x86_64-pc-windows-msvc)	1s
Mobile	1s
Relay E2E	1s
Desktop Build (macOS)	1s
Desktop Core	1s
Web	1s
Rust Lint	1s
Security	1s
Unit Tests	1s
Desktop Smoke E2E (${{ matrix.shard }})	1s
Desktop	1s
Desktop E2E Integration (${{ matrix.shard }}/2)	1s
Backend Integration (relay e2e)	1s
Desktop E2E Integration	1s
	18s

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