refactor(types): rename AppType to AppId for semantic clarity

Rename `AppType` to `AppId` across the entire frontend codebase to better
reflect its purpose as an application identifier rather than a type category.
This aligns frontend naming with backend command parameter conventions.

Changes:
- Rename type `AppType` to `AppId` in src/lib/api/types.ts
- Remove `AppType` export from src/lib/api/index.ts
- Update all component props from `appType` to `appId` (43 files)
- Update all variable names from `appType` to `appId`
- Synchronize documentation (CHANGELOG, refactoring plans)
- Update test files and MSW mocks

BREAKING CHANGE: `AppType` type is no longer exported. Use `AppId` instead.
All component props have been renamed from `appType` to `appId`.

src/components/providers/forms/hooks/useApiKeyLink.ts

@@ -1,5 +1,5 @@
 import { useMemo } from "react";
-import type { AppType } from "@/lib/api";
+import type { AppId } from "@/lib/api";
 import type { ProviderCategory } from "@/types";
 import type { ProviderPreset } from "@/config/providerPresets";
 import type { CodexProviderPreset } from "@/config/codexProviderPresets";
@@ -10,7 +10,7 @@ type PresetEntry = {
 };
 
 interface UseApiKeyLinkProps {
-  appType: AppType;
+  appId: AppId;
   category?: ProviderCategory;
   selectedPresetId: string | null;
   presetEntries: PresetEntry[];
@@ -21,7 +21,7 @@ interface UseApiKeyLinkProps {
  * 管理 API Key 获取链接的显示和 URL
  */
 export function useApiKeyLink({
-  appType,
+  appId,
   category,
   selectedPresetId,
   presetEntries,
@@ -53,12 +53,7 @@ export function useApiKeyLink({
   }, [selectedPresetId, presetEntries, formWebsiteUrl]);
 
   return {
-    shouldShowApiKeyLink:
-      appType === "claude"
-        ? shouldShowApiKeyLink
-        : appType === "codex"
-          ? shouldShowApiKeyLink
-          : false,
+    shouldShowApiKeyLink: appId === "claude" ? shouldShowApiKeyLink : appId === "codex" ? shouldShowApiKeyLink : false,
     websiteUrl: getWebsiteUrl,
   };
 }