Adds `workbench-ui/src/app/routes.ts` as the single source of truth for
navigation routes. App, LeftNav, the command palette, ⌘-digit shortcuts,
and the landing-route preference now all derive from `WORKBENCH_ROUTES`.
Fixes the live palette-drift bug: the command palette's hand-maintained
NAV_COMMANDS listed 10 routes and silently dropped Demos and Calibration,
so they were unreachable via ⌘K. The landing-route tuple was likewise
missing Replay and Calibration. Deriving every list from one registry
makes that drift structurally impossible.
- routes.ts carries a `section` field for grouped wayfinding nav
(Converse · Cognition · Determinism · Evidence · Discipline ·
Substrate · Settings) — a display skin only; one workbench, one
address space, one Evidence Chain Rail.
- App is data-driven via ROUTE_ELEMENTS (route id → element); a registry
route without an element fails routes.test rather than rendering undefined.
- Honest keyboard model: ten routes pin ⌘1–0; Demos and Calibration are
palette-only (no chord advertised).
- routes.test.tsx guards the contract: element-map parity, unique
ids/paths/digits, landing-route coverage (Replay + Calibration), and
palette reachability of every command-visible route.
Verified: pnpm build green; routes/Shell/CommandPalette/routeConformance/
prefs/Settings + hexScan/schemaDrift/enumCoverage suites all pass (108 tests).
