feat: finalisation éditeur Forge + mode hors-ligne PWA + consolidation roadmap

- Forge: Tab indent, Ctrl+K, auto-focus, AI status, messages erreur FR
- Forge: slash commands clean, cache-bust iframe, preview serveur
- Forge: iframe 82vh, hauteur auto, table inline, sélecteur langage
- PWA hors-ligne: IndexedDB (offline-db.js + offline.js)
- Mermaid: thème dark complet, highlight.js preview
- Backend: màj CSP, rename chain, bookmarks/history/shares
- Roadmap: consolidation dans docs/ROADMAP.md (75 items)
- Infra: docker-compose.podman.yml, suppression test-vault
- .gitignore: exclusion odysseus/

frontend/js/search.js

@@ -3,6 +3,7 @@ import { api } from './auth.js';
 import { state } from './state.js';
 import { safeCreateIcons } from './utils.js';
 import { showLoading, el, hideProgressBar, showWelcome, highlightSearchText, loadSavedSearches } from './viewer.js';
+import { searchOffline } from './offline.js';
 import { _getEffective } from './config.js';
 import { TabManager, showToast } from './ui.js';
 import { addTagFilter, buildSearchResultsHeader, shouldDisplayPath, removeTagFilter, TagFilterService } from './sidebar.js';
@@ -804,6 +805,27 @@ export async function performAdvancedSearch(query, vaultFilter, tagFilter, offse
     clearTimeout(timeoutId);
     if (err.name === "AbortError") return;
     if (searchId !== state.currentSearchId) return;
+
+    // Try offline search fallback
+    console.log('[Search] Network failed, trying offline search');
+    const offlineResults = await searchOffline(query, vaultFilter);
+    if (offlineResults && offlineResults.length > 0) {
+      const data = {
+        query: query,
+        vault_filter: vaultFilter,
+        count: offlineResults.length,
+        total: offlineResults.length,
+        offset: 0,
+        limit: effectiveLimit,
+        results: offlineResults,
+        offline: true
+      };
+      state.advancedSearchTotal = offlineResults.length;
+      state.advancedSearchOffset = 0;
+      renderAdvancedSearchResults(data, query, tagFilter);
+      return;
+    }
+
     showWelcome();
   } finally {
     hideProgressBar();