* chore: enforce test directory conventions
Move package, app, and tool tests out of src and add guard enforcement so source directories stay source-only.
* ci: use guard and package-scoped tests
Run the new repository guard in CI and keep test execution aligned with package-scoped commands after removing root aliases.
* ci: align stable release guard check
Use the new repository guard in stable release verification after replacing the residual-JS-only script.
* chore: tighten test layout enforcement
Enforce sibling tests directories, typecheck moved test suites with dedicated configs, and refresh remaining guidance that pointed at src-based tests.
* chore: clarify no-emit test tsconfigs
Explicitly disable declaration-only emit in test tsconfigs so review tooling sees they are no-emit typecheck configs.
* feat(dev): add desktop tools-dev control plane
* refactor(sidecar): split Open Design contracts
Move Open Design-specific sidecar protocol definitions into @open-design/contracts so sidecar and platform can remain descriptor-driven primitives.
* refactor(daemon): organize package sources
Keep daemon app code, tests, and sidecar entrypoints in separate package directories so each layer can be built and verified independently.
* chore(repo): streamline maintenance entrypoints
Centralize agent guidance by directory and reduce root command chains while preserving the existing build scope.
* docs: translate agent guidance to English
* fix(sidecar): tolerate stale IPC sockets
Remove stale Unix socket files only after confirming no listener is active, so tools-dev can restart after unclean shutdowns.
