feat(claude-desktop): add 44 provider presets translated from Claude Code

- New src/config/claudeDesktopProviderPresets.ts with the Claude Code
  preset list re-shaped into Desktop's three-segment route format
  (routeId / upstreamModel / displayName); excludes OAuth providers,
  AWS Bedrock (no SigV4 support) and KAT-Coder (placeholder URL).
- Non-Claude upstream presets show upstream model id as displayName
  (e.g. deepseek-v4-pro) so the Desktop model list reflects what is
  actually being requested. OpenRouter/TheRouter/PIPELLM keep
  Sonnet/Opus/Haiku since their upstream really is Anthropic Claude.
- Wire ProviderPresetSelector into ClaudeDesktopProviderForm so
  selecting a preset back-fills baseUrl, mode, routes and apiFormat.
- Drop the hard-coded ANTHROPIC_AUTH_TOKEN write in handleSubmit so
  ANTHROPIC_API_KEY presets (LemonData / AiHubMix / Gemini Native)
  save under the correct env key, and clear the opposite key on switch.
- Hide the universal-providers tab for claude-desktop because its
  meta-driven routing has no analogue in the universal flat-env shape.
- Add apps."claude-desktop" i18n key (zh/en/ja) so the dialog tab
  label resolves instead of showing the literal key.

src/i18n/locales/en.json

@@ -698,6 +698,7 @@
   "apps": {
     "claude": "Claude",
     "claudeDesktop": "Claude Desktop",
+    "claude-desktop": "Claude Desktop",
     "codex": "Codex",
     "gemini": "Gemini",
     "opencode": "OpenCode",

src/i18n/locales/ja.json

@@ -698,6 +698,7 @@
   "apps": {
     "claude": "Claude",
     "claudeDesktop": "Claude Desktop",
+    "claude-desktop": "Claude Desktop",
     "codex": "Codex",
     "gemini": "Gemini",
     "opencode": "OpenCode",

src/i18n/locales/zh.json

@@ -698,6 +698,7 @@
   "apps": {
     "claude": "Claude",
     "claudeDesktop": "Claude Desktop",
+    "claude-desktop": "Claude Desktop",
     "codex": "Codex",
     "gemini": "Gemini",
     "opencode": "OpenCode",