feat: add RBAC (read/write/admin) and persistent audit log

- Add Role enum to tokens: Read, Write, Admin (default: Read)
- Enforce role-based access in auth middleware (read-only tokens blocked from PUT/POST/DELETE)
- Add role field to token create/list/verify API
- Add persistent audit log (append-only JSONL) for all registry operations
- Audit logging across all registries: docker, npm, maven, pypi, cargo, raw

DevITWay

nora-registry/src/registry/raw.rs

@@ -2,6 +2,7 @@
 // SPDX-License-Identifier: MIT
 
 use crate::activity_log::{ActionType, ActivityEntry};
+use crate::audit::AuditEntry;
 use crate::AppState;
 use axum::{
     body::Bytes,
@@ -35,6 +36,7 @@ async fn download(State(state): State<Arc<AppState>>, Path(path): Path<String>)
             state
                 .activity
                 .push(ActivityEntry::new(ActionType::Pull, path, "raw", "LOCAL"));
+                state.audit.log(AuditEntry::new("pull", "api", "", "raw", ""));
 
             // Guess content type from extension
             let content_type = guess_content_type(&key);
@@ -72,6 +74,7 @@ async fn upload(
             state
                 .activity
                 .push(ActivityEntry::new(ActionType::Push, path, "raw", "LOCAL"));
+                state.audit.log(AuditEntry::new("push", "api", "", "raw", ""));
             StatusCode::CREATED.into_response()
         }
         Err(_) => StatusCode::INTERNAL_SERVER_ERROR.into_response(),