perf: quick wins for pipeline, jobs, httpapi and web ops

- CDN snapshot: batch merge после parallel fetch, без race на persist
- ListRevisionPrefixes: лёгкая проверка revision вместо GetRevision
- Jobs: timeout/cancel context для pipeline и deploy
- HTTP server timeouts; кэш birdc для GET /peers
- ListModules: batch DoH profiles одним запросом
- Web: tab-scoped load на /operations, debounce job search, меньше over-fetch на dashboard

Co-authored-by: Cursor <[email protected]>

internal/httpapi/routes.go

@@ -275,7 +275,7 @@ func (s *Server) handleListPeers(w http.ResponseWriter, r *http.Request) {
 	}
 	allPeers := s.store.ListPeers(a.TenantID)
 	page, next, more := store.PaginateOffset(allPeers, r.URL.Query().Get("cursor"), parseListLimit(r))
-	liveStates := s.liveBGPProtocolStates(r.Context())
+	liveStates := s.liveBGPProtocolStates(r)
 	items := make([]map[string]any, 0, len(page))
 	for _, p := range page {
 		row := peerJSON(p)
@@ -289,7 +289,17 @@ func (s *Server) handleListPeers(w http.ResponseWriter, r *http.Request) {
 	})
 }
 
-func (s *Server) liveBGPProtocolStates(ctx context.Context) map[string]string {
+func (s *Server) liveBGPProtocolStates(r *http.Request) map[string]string {
+	if r != nil && strings.EqualFold(strings.TrimSpace(r.URL.Query().Get("live")), "1") {
+		return s.liveBGPProtocolStatesFresh(r.Context())
+	}
+	if cached, ok := observability.CachedBirdProtocolStates(90 * time.Second); ok {
+		return cached
+	}
+	return s.liveBGPProtocolStatesFresh(r.Context())
+}
+
+func (s *Server) liveBGPProtocolStatesFresh(ctx context.Context) map[string]string {
 	sock := strings.TrimSpace(os.Getenv("EVOBGP_BIRDC_SOCKET"))
 	if sock == "" {
 		return map[string]string{}
@@ -298,7 +308,9 @@ func (s *Server) liveBGPProtocolStates(ctx context.Context) map[string]string {
 	if err != nil {
 		return map[string]string{}
 	}
-	return parseBGPProtocolStates(out)
+	states := birdfmt.ParseBGPProtocolStates(out)
+	observability.SetBirdProtocolStates(states)
+	return states
 }
 
 // parseBGPProtocolStates parses `birdc show protocols all` summary rows into protocol_name -> state.