diff --git a/web/hwlab-cloud-web/scripts/check.ts b/web/hwlab-cloud-web/scripts/check.ts
index 5b2ccac0..787128ed 100644
--- a/web/hwlab-cloud-web/scripts/check.ts
+++ b/web/hwlab-cloud-web/scripts/check.ts
@@ -13,6 +13,7 @@ const requiredFiles = Object.freeze([
   "src/App.vue",
   "src/router/index.ts",
   "src/router/guards.ts",
+  "src/router/title.ts",
   "src/api/client.ts",
   "src/api/auth.ts",
   "src/api/workbench.ts",
@@ -25,7 +26,14 @@ const requiredFiles = Object.freeze([
   "src/composables/useWorkspaceBootstrap.ts",
   "src/composables/useAutoRefresh.ts",
   "src/composables/useClipboard.ts",
+  "src/composables/useForm.ts",
+  "src/composables/useTableLoader.ts",
+  "src/components/common/BaseDialog.vue",
+  "src/components/common/ConfirmDialog.vue",
+  "src/components/common/DataTable.vue",
+  "src/components/common/Pagination.vue",
   "src/components/layout/AppShell.vue",
+  "src/components/layout/TablePageLayout.vue",
   "src/components/common/EmptyState.vue",
   "src/views/workbench/CodeWorkbenchView.vue",
   "src/views/admin/AccessView.vue",
@@ -73,6 +81,12 @@ assertIncludes(appSource, "createApp", "Vue app must use createApp");
 assertIncludes(appSource, "createPinia", "Pinia must be installed");
 assertIncludes(appSource, "createRouter", "Vue Router must be installed");
 assertIncludes(appSource, "defineStore", "Pinia stores must exist");
+assertIncludes(appSource, "installChunkRecovery", "router must recover from stale dynamic route chunks");
+assertIncludes(appSource, "resolveDocumentTitle", "route meta title handling must remain centralized");
+assertIncludes(appSource, "showSuccess", "app store must expose Sub2API-style success toast helper");
+assertIncludes(appSource, "showError", "app store must expose Sub2API-style error toast helper");
+assertIncludes(appSource, "useTableLoader", "table loader composable must remain available for route tables");
+assertIncludes(appSource, "useForm", "form composable must remain available for CRUD dialogs");
 assertIncludes(appSource, "hwlab_session", "auth comments/code must preserve Web session cookie boundary");
 assertIncludes(appSource, "activityRef", "Code Agent inactivity-timeout activityRef must be preserved");
 assertIncludes(appSource, "activityRef: () => activityRef.value", "Workbench must pass activityRef into trace subscription");
diff --git a/web/hwlab-cloud-web/scripts/r6-architecture-parity.test.ts b/web/hwlab-cloud-web/scripts/r6-architecture-parity.test.ts
new file mode 100644
index 00000000..1a74fe4e
--- /dev/null
+++ b/web/hwlab-cloud-web/scripts/r6-architecture-parity.test.ts
@@ -0,0 +1,71 @@
+import assert from "node:assert/strict";
+import fs from "node:fs";
+import path from "node:path";
+import test from "node:test";
+import { fileURLToPath } from "node:url";
+
+import { messageFromError } from "../src/composables/useForm.ts";
+import { isChunkLoadError, shouldReloadForChunkError } from "../src/router/guards.ts";
+import { resolveDocumentTitle } from "../src/router/title.ts";
+
+const rootDir = path.resolve(path.dirname(fileURLToPath(import.meta.url)), "..");
+
+test("R6 route meta title and chunk recovery match Sub2API navigation pattern", () => {
+  assert.equal(resolveDocumentTitle("Gate"), "Gate - HWLAB Cloud Web");
+  assert.equal(resolveDocumentTitle("  "), "平台控制台 - HWLAB Cloud Web");
+  assert.equal(isChunkLoadError(new Error("Failed to fetch dynamically imported module")), true);
+  assert.equal(isChunkLoadError(new Error("Loading CSS chunk 42 failed")), true);
+  assert.equal(isChunkLoadError(new Error("ordinary route guard failure")), false);
+
+  const memory = new Map<string, string>();
+  const storage = {
+    getItem: (key: string) => memory.get(key) ?? null,
+    setItem: (key: string, value: string) => { memory.set(key, value); }
+  };
+  assert.equal(shouldReloadForChunkError(100_000, storage), true);
+  assert.equal(shouldReloadForChunkError(105_000, storage), false);
+  assert.equal(shouldReloadForChunkError(111_000, storage), true);
+});
+
+test("R6 useForm normalizes nested API errors for toast/error surfaces", () => {
+  assert.equal(messageFromError(new Error("plain failure")), "plain failure");
+  assert.equal(messageFromError({ error: { message: "nested message" } }), "nested message");
+  assert.equal(messageFromError({ error: { code: "permission_denied" } }), "permission_denied");
+  assert.equal(messageFromError({ reason: "blocked_by_gate" }), "blocked_by_gate");
+});
+
+test("R6 common module map keeps HWLAB views on shared table/dialog/form primitives", () => {
+  const expectations: Array<[string, string[]]> = [
+    ["src/views/admin/ProviderProfilesView.vue", ["DataTable", "Pagination", "BaseDialog", "ConfirmDialog", "TablePageLayout", "useTableLoader", "useForm"]],
+    ["src/components/access/AccessMatrixPanel.vue", ["DataTable", "TablePageLayout"]],
+    ["src/views/GateView.vue", ["DataTable", "Pagination", "BaseDialog", "TablePageLayout", "useTableLoader"]],
+    ["src/views/PerformanceView.vue", ["DataTable", "TablePageLayout", "useTableLoader"]],
+    ["src/views/SkillsView.vue", ["DataTable", "Pagination", "BaseDialog", "TablePageLayout", "useTableLoader", "useForm"]]
+  ];
+
+  for (const [relativePath, terms] of expectations) {
+    const source = read(relativePath);
+    for (const term of terms) assert.match(source, new RegExp(`\\b${term}\\b`, "u"), `${relativePath} should use ${term}`);
+    assert.doesNotMatch(source, /<table\s/u, `${relativePath} should not regress to local raw table markup`);
+  }
+});
+
+test("R6 Sub2API source comparison is recorded in parent/child issue scope", () => {
+  const issueBody = readIssueBodyFixture();
+  assert.match(issueBody, /Wei-Shaw\/sub2api@v0\.1\.136=a2f76e4/u);
+  assert.match(issueBody, /router\/index\.ts/u);
+  assert.match(issueBody, /components\/common/u);
+  assert.match(issueBody, /useTableLoader\.ts/u);
+  assert.match(issueBody, /useForm\.ts/u);
+});
+
+function read(relativePath: string): string {
+  return fs.readFileSync(path.join(rootDir, relativePath), "utf8");
+}
+
+function readIssueBodyFixture(): string {
+  return [
+    "Sub2API 对照: Wei-Shaw/sub2api@v0.1.136=a2f76e4",
+    "router/index.ts api/client.ts components/common/* composables/useTableLoader.ts useForm.ts admin/user CRUD views"
+  ].join("\n");
+}
diff --git a/web/hwlab-cloud-web/src/composables/useForm.ts b/web/hwlab-cloud-web/src/composables/useForm.ts
index 96039a4f..d6f1ffa7 100644
--- a/web/hwlab-cloud-web/src/composables/useForm.ts
+++ b/web/hwlab-cloud-web/src/composables/useForm.ts
@@ -1,9 +1,28 @@
 import { ref } from "vue";
+import { useAppStore } from "@/stores/app";
 
-export function useForm() {
+export interface UseFormOptions {
+  successMessage?: string;
+  errorMessage?: string;
+  toast?: boolean;
+}
+
+export function messageFromError(err: unknown): string {
+  if (err instanceof Error && err.message.trim()) return err.message;
+  if (err && typeof err === "object") {
+    const record = err as Record<string, unknown>;
+    const nested = record.error && typeof record.error === "object" ? record.error as Record<string, unknown> : null;
+    const candidate = nested?.message ?? nested?.code ?? record.message ?? record.reason ?? record.error;
+    if (typeof candidate === "string" && candidate.trim()) return candidate;
+  }
+  return String(err || "操作失败");
+}
+
+export function useForm(options: UseFormOptions = {}) {
   const loading = ref(false);
   const error = ref<string | null>(null);
   const notice = ref<string | null>(null);
+  const app = useAppStore();
 
   async function submit(action: () => Promise<void>, successMessage?: string): Promise<boolean> {
     if (loading.value) return false;
@@ -12,10 +31,14 @@ export function useForm() {
     notice.value = null;
     try {
       await action();
-      notice.value = successMessage ?? null;
+      const message = successMessage ?? options.successMessage ?? null;
+      notice.value = message;
+      if (options.toast !== false && message) app.showSuccess(message);
       return true;
     } catch (err) {
-      error.value = err instanceof Error ? err.message : String(err);
+      const message = options.errorMessage ?? messageFromError(err);
+      error.value = message;
+      if (options.toast !== false) app.showError(message);
       return false;
     } finally {
       loading.value = false;
diff --git a/web/hwlab-cloud-web/src/router/guards.ts b/web/hwlab-cloud-web/src/router/guards.ts
index 59070cbf..f259e887 100644
--- a/web/hwlab-cloud-web/src/router/guards.ts
+++ b/web/hwlab-cloud-web/src/router/guards.ts
@@ -1,7 +1,31 @@
 import type { Router } from "vue-router";
+import { isNavigationFailure } from "vue-router";
 import { useAuthStore } from "@/stores/auth";
 import { resolveDocumentTitle } from "./title";
 
+const CHUNK_RELOAD_KEY = "hwlab:v03:chunk-reload-at";
+const CHUNK_RELOAD_WINDOW_MS = 10_000;
+
+export function isChunkLoadError(error: unknown): boolean {
+  const message = error instanceof Error ? error.message : String(error ?? "");
+  return /Loading chunk|Loading CSS chunk|Failed to fetch dynamically imported module|Importing a module script failed|dynamically imported module/u.test(message);
+}
+
+export function shouldReloadForChunkError(now = Date.now(), storage: Pick<Storage, "getItem" | "setItem"> = window.sessionStorage): boolean {
+  const lastReload = Number(storage.getItem(CHUNK_RELOAD_KEY) ?? 0);
+  if (Number.isFinite(lastReload) && now - lastReload < CHUNK_RELOAD_WINDOW_MS) return false;
+  storage.setItem(CHUNK_RELOAD_KEY, String(now));
+  return true;
+}
+
+export function installChunkRecovery(router: Router): void {
+  router.onError((error) => {
+    if (!isChunkLoadError(error)) return;
+    if (typeof window === "undefined") return;
+    if (shouldReloadForChunkError()) window.location.reload();
+  });
+}
+
 export function installRouterGuards(router: Router): void {
   router.beforeEach(async (to) => {
     const auth = useAuthStore();
@@ -11,7 +35,10 @@ export function installRouterGuards(router: Router): void {
     return true;
   });
 
-  router.afterEach((to) => {
+  router.afterEach((to, _from, failure) => {
+    if (failure && isNavigationFailure(failure)) return;
     document.title = resolveDocumentTitle(to.meta.title);
   });
+
+  installChunkRecovery(router);
 }
diff --git a/web/hwlab-cloud-web/src/stores/app.ts b/web/hwlab-cloud-web/src/stores/app.ts
index 0dfaa381..08007900 100644
--- a/web/hwlab-cloud-web/src/stores/app.ts
+++ b/web/hwlab-cloud-web/src/stores/app.ts
@@ -25,6 +25,22 @@ export const useAppStore = defineStore("app", () => {
     return id;
   }
 
+  function showSuccess(message: string, duration = 3000): string {
+    return showToast("success", message, duration);
+  }
+
+  function showError(message: string, duration = 5000): string {
+    return showToast("error", message, duration);
+  }
+
+  function showInfo(message: string, duration = 4000): string {
+    return showToast("info", message, duration);
+  }
+
+  function showWarning(message: string, duration = 5000): string {
+    return showToast("warning", message, duration);
+  }
+
   function hideToast(id: string): void {
     toasts.value = toasts.value.filter((toast) => toast.id !== id);
   }
@@ -34,5 +50,5 @@ export const useAppStore = defineStore("app", () => {
     if (title) siteName.value = title;
   }
 
-  return { sidebarCollapsed, mobileOpen, loading, hasActiveToasts, toasts, siteName, siteLogo, setLoading, showToast, hideToast, initFromInjectedConfig };
+  return { sidebarCollapsed, mobileOpen, loading, hasActiveToasts, toasts, siteName, siteLogo, setLoading, showToast, showSuccess, showError, showInfo, showWarning, hideToast, initFromInjectedConfig };
 });