fix(web): stale-closure + focus trap + 去边界强转 + a11y/性能打磨 + 类型化客户端

P1-6 useStyleLearn/useKimiOauth 修 stale-closure 依赖。
P1-7 CommandPalette/Drawer 加 focus trap（新 lib/a11y/focusTrap）。
P1-8 SSE 解析与 server.ts 去 as 强转改类型守卫/运行时校验。
P2 删冗余强转、开 noUncheckedIndexedAccess、Toast 清理+稳定 key、列表 key 稳定化、
  rel=noopener、useMemo 大文本、ConflictCard role=group、useInjection 加锁、
  client.test 真断言。
codegen 重生成 schema.d.ts + 消费 DimensionEntry/ReviewConflictView 强类型。

apps/web/lib/nav/ai-tools.test.ts

@@ -9,9 +9,9 @@ describe("aiToolItems", () => {
 
   it("leads with 写本章 (primary, key write)", () => {
     const [first] = aiToolItems("p1");
-    expect(first.label).toBe("写本章");
-    expect(first.primary).toBe(true);
-    expect(first.key).toBe("write");
+    expect(first?.label).toBe("写本章");
+    expect(first?.primary).toBe(true);
+    expect(first?.key).toBe("write");
   });
 
   it("scopes every href under the project path", () => {

apps/web/lib/nav/items.test.ts

@@ -57,6 +57,7 @@ describe("isNavItemActive", () => {
 
   it("matches a global item by exact pathname only", () => {
     const works = GLOBAL_NAV_ITEMS[0];
+    if (!works) throw new Error("expected GLOBAL_NAV_ITEMS[0]");
     expect(isNavItemActive(works, { pathname: "/" })).toBe(true);
     expect(isNavItemActive(works, { pathname: "/projects/p1/write" })).toBe(
       false,
@@ -65,6 +66,7 @@ describe("isNavItemActive", () => {
 
   it("ignores activeNav for global items (no key)", () => {
     const settings = GLOBAL_NAV_ITEMS[1];
+    if (!settings) throw new Error("expected GLOBAL_NAV_ITEMS[1]");
     expect(
       isNavItemActive(settings, { pathname: "/", activeNav: "write" }),
     ).toBe(false);