diff --git a/server/modules/providers/services/session-conversations-search.service.ts b/server/modules/providers/services/session-conversations-search.service.ts
index 38492201..101a0955 100644
--- a/server/modules/providers/services/session-conversations-search.service.ts
+++ b/server/modules/providers/services/session-conversations-search.service.ts
@@ -472,6 +472,7 @@ function extractGeminiText(content: unknown): string {
 
 function normalizeSearchableSessions(rows: SessionRepositoryRow[]): SearchableSessionRow[] {
   const normalizedRows: SearchableSessionRow[] = [];
+  const projectArchiveStateByPath = new Map<string, boolean>();
 
   for (const row of rows) {
     const provider = row.provider as SearchableProvider;
@@ -489,6 +490,27 @@ function normalizeSearchableSessions(rows: SessionRepositoryRow[]): SearchableSe
       continue;
     }
 
+    /**
+     * Active session rows can still belong to an archived project because
+     * project archiving intentionally preserves the underlying session data.
+     * Global conversation search should follow the visible workspace model,
+     * which means excluding any session whose owning project is archived.
+     *
+     * Cache the archive lookup per normalized project path so one search pass
+     * does not re-query the same project row for every session in that folder.
+     */
+    const normalizedProjectPath = typeof row.project_path === 'string' ? row.project_path.trim() : '';
+    if (normalizedProjectPath) {
+      if (!projectArchiveStateByPath.has(normalizedProjectPath)) {
+        const projectRow = projectsDb.getProjectPath(normalizedProjectPath);
+        projectArchiveStateByPath.set(normalizedProjectPath, Boolean(projectRow?.isArchived));
+      }
+
+      if (projectArchiveStateByPath.get(normalizedProjectPath) === true) {
+        continue;
+      }
+    }
+
     normalizedRows.push({
       ...row,
       provider,