diff --git a/.gitignore b/.gitignore
index d06cd30..517d3c8 100644
--- a/.gitignore
+++ b/.gitignore
@@ -169,3 +169,5 @@ kin.db-shm
 PROGRESS.md
 node_modules/
 web/frontend/dist/
+
+.kin_worktrees/
diff --git a/agents/runner.py b/agents/runner.py
index b8d02e8..c75ab07 100644
--- a/agents/runner.py
+++ b/agents/runner.py
@@ -772,6 +772,7 @@ def _is_test_failure(result: dict) -> bool:
 
 # Roles that trigger auto-test when project.auto_test_enabled is set
 _AUTO_TEST_ROLES = {"backend_dev", "frontend_dev"}
+_WORKTREE_ROLES = {"backend_dev", "frontend_dev", "debugger"}
 
 
 def _detect_test_command(project_path: str) -> str | None:
@@ -1432,7 +1433,6 @@ def run_pipeline(
                 }
 
         # Worktree isolation: opt-in per project, for write-capable roles
-        _WORKTREE_ROLES = {"backend_dev", "frontend_dev", "debugger"}
         worktree_path = None
         project_for_wt = models.get_project(conn, task["project_id"]) if not dry_run else None
         use_worktree = (
diff --git a/web/frontend/src/views/ProjectView.vue b/web/frontend/src/views/ProjectView.vue
index 2b8fc17..cd5fa8d 100644
--- a/web/frontend/src/views/ProjectView.vue
+++ b/web/frontend/src/views/ProjectView.vue
@@ -256,6 +256,24 @@ async function toggleAutoTest() {
   }
 }
 
+// Worktrees toggle
+const worktrees = ref(false)
+
+function loadWorktrees() {
+  worktrees.value = !!(project.value?.worktrees_enabled)
+}
+
+async function toggleWorktrees() {
+  worktrees.value = !worktrees.value
+  try {
+    await api.patchProject(props.id, { worktrees_enabled: worktrees.value })
+    if (project.value) project.value = { ...project.value, worktrees_enabled: worktrees.value ? 1 : 0 }
+  } catch (e: any) {
+    error.value = e.message
+    worktrees.value = !worktrees.value
+  }
+}
+
 // Audit
 const auditLoading = ref(false)
 const auditResult = ref<AuditResult | null>(null)
@@ -483,6 +501,7 @@ async function load() {
     loadMode()
     loadAutocommit()
     loadAutoTest()
+    loadWorktrees()
   } catch (e: any) {
     error.value = e.message
   } finally {
@@ -913,6 +932,14 @@ async function addDecision() {
               :title="autoTest ? 'Auto-test: on — запускать тесты после pipeline' : 'Auto-test: off'">
               {{ autoTest ? '&#x2713; Автотест' : 'Автотест' }}
             </button>
+            <button @click="toggleWorktrees"
+              class="px-2 py-1 text-xs border rounded transition-colors"
+              :class="worktrees
+                ? 'bg-teal-900/30 text-teal-400 border-teal-800 hover:bg-teal-900/50'
+                : 'bg-gray-800/50 text-gray-400 border-gray-700 hover:bg-gray-800'"
+              :title="worktrees ? 'Worktrees: on — агенты в изолированных git worktrees' : 'Worktrees: off'">
+              {{ worktrees ? '&#x2713; Worktrees' : 'Worktrees' }}
+            </button>
             <button @click="runAudit" :disabled="auditLoading"
               class="px-2 py-1 text-xs bg-purple-900/30 text-purple-400 border border-purple-800 rounded hover:bg-purple-900/50 disabled:opacity-50"
               title="Check which pending tasks are already done">
@@ -1227,6 +1254,14 @@ async function addDecision() {
           :title="autoTest ? 'Auto-test: on — запускать тесты после pipeline' : 'Auto-test: off'">
           {{ autoTest ? '&#x2713; Автотест' : 'Автотест' }}
         </button>
+        <button @click="toggleWorktrees"
+          class="px-2 py-1 text-xs border rounded transition-colors"
+          :class="worktrees
+            ? 'bg-teal-900/30 text-teal-400 border-teal-800 hover:bg-teal-900/50'
+            : 'bg-gray-800/50 text-gray-400 border-gray-700 hover:bg-gray-800'"
+          :title="worktrees ? 'Worktrees: on — агенты в изолированных git worktrees' : 'Worktrees: off'">
+          {{ worktrees ? '&#x2713; Worktrees' : 'Worktrees' }}
+        </button>
         <button @click="runAudit" :disabled="auditLoading"
           class="px-2 py-1 text-xs bg-purple-900/30 text-purple-400 border border-purple-800 rounded hover:bg-purple-900/50 disabled:opacity-50"
           title="Check which pending tasks are already done">