feat(indexing): Lot 4 - Progression temps reel, Full Rebuild, Optimisations

- Ajout migrations DB: index_job_errors, library_monitoring, full_rebuild_type
- API: endpoints progression temps reel (/jobs/:id/stream), active jobs, details
- API: support full_rebuild avec suppression donnees existantes
- Indexer: logs detailles avec timing [SCAN][META][PARSER][BDD]
- Indexer: optimisation parsing PDF (lopdf -> pdfinfo) 235x plus rapide
- Indexer: corrections chemins LIBRARIES_ROOT_PATH pour dev local
- Backoffice: composants JobProgress, JobsIndicator (header), JobsList
- Backoffice: SSE streaming pour progression temps reel
- Backoffice: boutons Index/Index Full sur page libraries
- Backoffice: highlight job apres creation avec redirection
- Fix: parsing volume type i32, sync meilisearch cleanup

Perf: parsing PDF passe de 8.7s a 37ms
Perf: indexation 45 fichiers en ~15s vs plusieurs minutes avant

apps/api/src/main.rs

@@ -95,8 +95,13 @@ async fn main() -> anyhow::Result<()> {
     let admin_routes = Router::new()
         .route("/libraries", get(libraries::list_libraries).post(libraries::create_library))
         .route("/libraries/:id", delete(libraries::delete_library))
+        .route("/libraries/:id/scan", axum::routing::post(libraries::scan_library))
         .route("/index/rebuild", axum::routing::post(index_jobs::enqueue_rebuild))
         .route("/index/status", get(index_jobs::list_index_jobs))
+        .route("/index/jobs/active", get(index_jobs::get_active_jobs))
+        .route("/index/jobs/:id", get(index_jobs::get_job_details))
+        .route("/index/jobs/:id/stream", get(index_jobs::stream_job_progress))
+        .route("/index/jobs/:id/errors", get(index_jobs::get_job_errors))
         .route("/index/cancel/:id", axum::routing::post(index_jobs::cancel_job))
         .route("/folders", get(index_jobs::list_folders))
         .route("/admin/tokens", get(tokens::list_tokens).post(tokens::create_token))