Adds a scope-based access control layer to all 81 existing API routes.
Sits alongside existing session-cookie auth (does not replace it).
What this PR does:
- Audits every existing route and documents required scope per route
(see documentation/auth/route-scope-audit.md)
- Adds classes/auth/scope.php with 10 scope constants and role→scope defaults
- Adds classes/auth/scope_middleware.php with requireScope/requireAnyScope/requireRole
- Applies require*() calls to all 81 existing routes
- Adds ScopeMiddlewareTest (unit, 178 lines) and RouteScopeTest (integration, 212 lines)
Coexistence note:
This branch's classes/auth/scope.php is a stub that will be replaced
by classes/auth/scope_registry.php (from TRU-145 / PR #396) when that
PR merges first. The two have compatible APIs.
Refs: TRU-149
This update introduces explicit permission definitions for various route handlers across multiple routes. These changes enhance clarity and allow for more granular control over route access based on defined permissions. The updates ensure better manageability and scalability of endpoint permissions.