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docs(c4): accuracy audit — split L3 diagrams, add 6 new sub-diagrams, fix all stale content #448

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marcel merged 27 commits from docs/post-refactor-accuracy-audit into main 2026-05-06 20:00:16 +02:00
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docs/architecture/c4-diagrams.md
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@@ -73,16 +73,16 @@ C4Component
ContainerDb(db, "PostgreSQL")
System_Boundary(backend, "API Backend (Spring Boot)") {
Component(secFilter, "Security Filter Chain", "Spring Security", "Enforces authentication on all requests. Parses Basic Auth header and validates credentials via BCrypt.")
Component(secFilter, "Security Filter Chain", "Spring Security", "Enforces authentication on all requests. Parses Basic Auth header and validates credentials via BCrypt. Permits password-reset, invite, and register endpoints without authentication.")
Component(permAspect, "PermissionAspect", "Spring AOP", "Intercepts methods annotated with @RequirePermission. Checks user's granted authorities against the required permission. Throws 401/403 if denied.")
Component(secConf, "SecurityConfig", "Spring @Configuration", "Configures filter chain: all routes require authentication, CSRF disabled, BCrypt password encoder, DaoAuthenticationProvider with CustomUserDetailsService.")
Component(userDetails, "CustomUserDetailsService", "Spring Security UserDetailsService", "Loads AppUser by username from DB. Converts group permissions to Spring GrantedAuthority objects.")
Component(userDetails, "CustomUserDetailsService", "Spring Security UserDetailsService", "Loads AppUser by email from DB. Converts group permissions to Spring GrantedAuthority objects. Logs unknown permissions.")
}
Rel(frontend, secFilter, "All requests", "HTTP / Basic Auth header")
Rel(secFilter, permAspect, "Authenticated requests proceed to guarded methods", "AOP @Around")
Rel(secConf, userDetails, "Wires as UserDetailsService", "")
Rel(userDetails, db, "Loads user by username", "JDBC")
Rel(userDetails, db, "Loads user by email", "JDBC")
```
### 3b — Document, File & Import Domain