fix: 统一所有页面导航栏样式和位置

- 修复导航栏在不同页面显示不一致的问题
- 锁定导航栏位置，移除滚动动画
- 强制设置白色背景和高z-index确保导航栏始终在最顶层
- 统一index.html和pages目录下所有页面的导航栏表现

n8n-n8n-1.109.2/n8n-20250909-150829.log

@@ -0,0 +1,48 @@
+
+> n8n-monorepo@1.109.2 start /Users/xiaoqi/Documents/Dev/Project/2025-09-08_n8nDEMO演示/n8n-n8n-1.109.2
+> run-script-os
+
+
+> n8n-monorepo@1.109.2 start:default
+> cd packages/cli/bin && ./n8n
+
+Permissions 0644 for n8n settings file /Users/xiaoqi/.n8n/config are too wide. This is ignored for now, but in the future n8n will attempt to change the permissions automatically. To automatically enforce correct permissions now set N8N_ENFORCE_SETTINGS_FILE_PERMISSIONS=true (recommended), or turn this check off set N8N_ENFORCE_SETTINGS_FILE_PERMISSIONS=false.
+Initializing n8n process
+n8n ready on ::, port 5678
+n8n Task Broker ready on 127.0.0.1, port 5679
+Initializing AuthRolesService...
+AuthRolesService initialized successfully.
+[license SDK] Skipping renewal on init: license cert is not initialized
+Registered runner "JS Task Runner" (12eC5bJgg_r_kudoMldG7) 
+Version: 1.109.2
+Locale: zh-CN
+
+Editor is now accessible via:
+http://localhost:5678
+(node:5685) [DEP0060] DeprecationWarning: The `util._extend` API is deprecated. Please use Object.assign() instead.
+(Use `node --trace-deprecation ...` to show where the warning was created)
+TypeError: fetch failed
+    at node:internal/deps/undici/undici:13510:13
+    at processTicksAndRejections (node:internal/process/task_queues:105:5)
+    at TelemetryController.sourceConfig (/Users/xiaoqi/Documents/Dev/Project/2025-09-08_n8nDEMO演示/n8n-n8n-1.109.2/packages/cli/src/controllers/telemetry.controller.ts:48:20)
+    at handler (/Users/xiaoqi/Documents/Dev/Project/2025-09-08_n8nDEMO演示/n8n-n8n-1.109.2/packages/cli/src/controller.registry.ts:78:12)
+    at /Users/xiaoqi/Documents/Dev/Project/2025-09-08_n8nDEMO演示/n8n-n8n-1.109.2/packages/cli/src/controller.registry.ts:101:8
+TypeError: fetch failed
+    at node:internal/deps/undici/undici:13510:13
+    at processTicksAndRejections (node:internal/process/task_queues:105:5)
+    at runNextTicks (node:internal/process/task_queues:69:3)
+    at processImmediate (node:internal/timers:453:9)
+    at TelemetryController.sourceConfig (/Users/xiaoqi/Documents/Dev/Project/2025-09-08_n8nDEMO演示/n8n-n8n-1.109.2/packages/cli/src/controllers/telemetry.controller.ts:48:20)
+    at handler (/Users/xiaoqi/Documents/Dev/Project/2025-09-08_n8nDEMO演示/n8n-n8n-1.109.2/packages/cli/src/controller.registry.ts:78:12)
+    at /Users/xiaoqi/Documents/Dev/Project/2025-09-08_n8nDEMO演示/n8n-n8n-1.109.2/packages/cli/src/controller.registry.ts:101:8
+Error fetching feature flags Error [PostHogFetchNetworkError]: Network error while fetching PostHog
+    at new PostHogFetchNetworkError (/Users/xiaoqi/Documents/Dev/Project/2025-09-08_n8nDEMO演示/n8n-n8n-1.109.2/node_modules/.pnpm/posthog-node@3.2.1/node_modules/posthog-core/src/index.ts:41:5)
+    at PostHog.<anonymous> (/Users/xiaoqi/Documents/Dev/Project/2025-09-08_n8nDEMO演示/n8n-n8n-1.109.2/node_modules/.pnpm/posthog-node@3.2.1/node_modules/posthog-core/src/index.ts:546:17)
+    at step (/Users/xiaoqi/Documents/Dev/Project/2025-09-08_n8nDEMO演示/n8n-n8n-1.109.2/node_modules/.pnpm/posthog-node@3.2.1/node_modules/node_modules/tslib/tslib.es6.js:102:23)
+    at Object.throw (/Users/xiaoqi/Documents/Dev/Project/2025-09-08_n8nDEMO演示/n8n-n8n-1.109.2/node_modules/.pnpm/posthog-node@3.2.1/node_modules/node_modules/tslib/tslib.es6.js:83:53)
+    at rejected (/Users/xiaoqi/Documents/Dev/Project/2025-09-08_n8nDEMO演示/n8n-n8n-1.109.2/node_modules/.pnpm/posthog-node@3.2.1/node_modules/node_modules/tslib/tslib.es6.js:74:65) {
+  error: DOMException [TimeoutError]: The operation was aborted due to timeout
+      at node:internal/deps/undici/undici:13510:13,
+  [cause]: DOMException [TimeoutError]: The operation was aborted due to timeout
+      at node:internal/deps/undici/undici:13510:13
+}