diff --git a/agents/runner.py b/agents/runner.py
index 04a1615..cf8b02d 100644
--- a/agents/runner.py
+++ b/agents/runner.py
@@ -47,9 +47,13 @@ def _build_claude_env() -> dict:
             if bin_dir.is_dir():
                 extra.append(str(bin_dir))
 
-    seen = set(existing)
-    new_dirs = [d for d in extra if d and d not in seen]
-    env["PATH"] = ":".join(new_dirs + existing)
+    seen: set[str] = set()
+    deduped: list[str] = []
+    for d in extra + existing:
+        if d and d not in seen:
+            seen.add(d)
+            deduped.append(d)
+    env["PATH"] = ":".join(deduped)
     return env
 
 
diff --git a/tests/test_runner.py b/tests/test_runner.py
index 1e10e06..720a870 100644
--- a/tests/test_runner.py
+++ b/tests/test_runner.py
@@ -1173,8 +1173,14 @@ class TestClaudePath:
             )
 
     def test_build_claude_env_no_duplicate_paths(self):
-        """_build_claude_env не должен дублировать уже существующие пути."""
-        env = _build_claude_env()
+        """_build_claude_env не должен дублировать уже существующие пути.
+
+        Мокируем PATH на фиксированное значение, чтобы тест не зависел от
+        реального окружения (решение #48).
+        """
+        fixed_path = "/usr/bin:/bin"
+        with patch.dict("os.environ", {"PATH": fixed_path}, clear=False):
+            env = _build_claude_env()
         path_dirs = env["PATH"].split(":")
         seen = set()
         for d in path_dirs:
diff --git a/web/api.py b/web/api.py
index 3fe79c7..4ac7a5c 100644
--- a/web/api.py
+++ b/web/api.py
@@ -136,19 +136,27 @@ class ProjectCreate(BaseModel):
 
 
 class ProjectPatch(BaseModel):
-    execution_mode: str
+    execution_mode: str | None = None
+    autocommit_enabled: bool | None = None
 
 
 @app.patch("/api/projects/{project_id}")
 def patch_project(project_id: str, body: ProjectPatch):
-    if body.execution_mode not in VALID_EXECUTION_MODES:
+    if body.execution_mode is None and body.autocommit_enabled is None:
+        raise HTTPException(400, "Nothing to update. Provide execution_mode or autocommit_enabled.")
+    if body.execution_mode is not None and body.execution_mode not in VALID_EXECUTION_MODES:
         raise HTTPException(400, f"Invalid execution_mode '{body.execution_mode}'. Must be one of: {', '.join(VALID_EXECUTION_MODES)}")
     conn = get_conn()
     p = models.get_project(conn, project_id)
     if not p:
         conn.close()
         raise HTTPException(404, f"Project '{project_id}' not found")
-    models.update_project(conn, project_id, execution_mode=body.execution_mode)
+    fields = {}
+    if body.execution_mode is not None:
+        fields["execution_mode"] = body.execution_mode
+    if body.autocommit_enabled is not None:
+        fields["autocommit_enabled"] = int(body.autocommit_enabled)
+    models.update_project(conn, project_id, **fields)
     p = models.get_project(conn, project_id)
     conn.close()
     return p
diff --git a/web/frontend/src/api.ts b/web/frontend/src/api.ts
index d4b8274..080bfcf 100644
--- a/web/frontend/src/api.ts
+++ b/web/frontend/src/api.ts
@@ -40,6 +40,7 @@ export interface Project {
   priority: number
   tech_stack: string[] | null
   execution_mode: string | null
+  autocommit_enabled: number | null
   created_at: string
   total_tasks: number
   done_tasks: number
@@ -169,7 +170,7 @@ export const api = {
     post<{ updated: string[]; count: number }>(`/projects/${projectId}/audit/apply`, { task_ids: taskIds }),
   patchTask: (id: string, data: { status?: string; execution_mode?: string }) =>
     patch<Task>(`/tasks/${id}`, data),
-  patchProject: (id: string, data: { execution_mode: string }) =>
+  patchProject: (id: string, data: { execution_mode?: string; autocommit_enabled?: boolean }) =>
     patch<Project>(`/projects/${id}`, data),
   deleteDecision: (projectId: string, decisionId: number) =>
     del<{ deleted: number }>(`/projects/${projectId}/decisions/${decisionId}`),
diff --git a/web/frontend/src/views/ProjectView.vue b/web/frontend/src/views/ProjectView.vue
index 744fdf2..0f5877b 100644
--- a/web/frontend/src/views/ProjectView.vue
+++ b/web/frontend/src/views/ProjectView.vue
@@ -62,6 +62,24 @@ async function toggleMode() {
   }
 }
 
+// Autocommit toggle
+const autocommit = ref(false)
+
+function loadAutocommit() {
+  autocommit.value = !!(project.value?.autocommit_enabled)
+}
+
+async function toggleAutocommit() {
+  autocommit.value = !autocommit.value
+  try {
+    await api.patchProject(props.id, { autocommit_enabled: autocommit.value })
+    if (project.value) project.value = { ...project.value, autocommit_enabled: autocommit.value ? 1 : 0 }
+  } catch (e: any) {
+    error.value = e.message
+    autocommit.value = !autocommit.value
+  }
+}
+
 // Audit
 const auditLoading = ref(false)
 const auditResult = ref<AuditResult | null>(null)
@@ -124,7 +142,7 @@ watch(selectedStatuses, (val) => {
   router.replace({ query: { ...route.query, status: val.length ? val.join(',') : undefined } })
 }, { deep: true })
 
-onMounted(() => { load(); loadMode() })
+onMounted(async () => { await load(); loadMode(); loadAutocommit() })
 
 const filteredTasks = computed(() => {
   if (!project.value) return []