chore(repo): keep only current main snapshot

History squashed to one root commit to permanently drop old branch history and objects.
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admin
2026-02-28 16:41:12 +08:00
commit 8df2095acf
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# App Composition Layer
Purpose: top-level assembly only.
Rules:
- `app_main` wires components, startup order, and shutdown hooks.
- No feature/business logic in composition code.
- No direct hardware operations outside platform abstractions.