chore: rebrand user-facing copy to OpenClaude (#851)

* chore: rebrand user-facing copy to OpenClaude

Replace lingering Claude Code branding in CLI, tips, and runtime UI with OpenClaude/openclaude, including the startup tip Gitlawb mention.

Co-Authored-By: Claude GPT-5.4 <noreply@openclaude.dev>

* chore: address branding-sweep review feedback

- PermissionRequest.tsx: rebrand the two remaining "Claude needs your
  approval/permission" notifications to OpenClaude (review-artifact and
  generic tool permission paths).
- main.tsx, teleport.tsx, session.tsx, WebFetchTool/utils.ts,
  skills/bundled/{debug,updateConfig}.ts: replace leftover `claude --…`
  CLI hints and "Claude Code" labels missed by the original sweep.
- main.tsx: drop the inline gitlawb.com marketing copy from the
  stale-prompt tip; keep it a pure rebrand.
- auth.ts: finish the half-rename so both `claude setup-token` and
  `claude auth login` references in the same error block now read
  `openclaude …`.
- mcp/client.ts: keep `name: 'claude-code'` for MCP server allowlist
  compatibility (now explicit via comment) and replace the
  "Anthropic's agentic coding tool" description with an OpenClaude one.
- MCPSettings.tsx: point the empty-server-list hint at
  https://github.com/Gitlawb/openclaude instead of code.claude.com.

Co-Authored-By: Claude Opus 4.7 (1M context) <noreply@anthropic.com>

* chore: replace help link with OpenClaude repo URL

Replace https://code.claude.com/docs/en/overview with
https://github.com/Gitlawb/openclaude in the help screen.

Co-Authored-By: OpenClaude <openclaude@gitlawb.com>

---------

Co-authored-by: Claude GPT-5.4 <noreply@openclaude.dev>
Co-authored-by: Claude Opus 4.7 (1M context) <noreply@anthropic.com>
Co-authored-by: OpenClaude <openclaude@gitlawb.com>

src/components/ModelPicker.tsx

@@ -265,7 +265,7 @@ export function ModelPicker(t0) {
   } else {
     t15 = $[41];
   }
-  const t16 = headerText ?? "Switch between Claude models. Applies to this session and future Claude Code sessions. For other/previous model names, specify with --model.";
+  const t16 = headerText ?? "Switch between Claude models. Applies to this session and future OpenClaude sessions. For other/previous model names, specify with --model.";
   let t17;
   if ($[42] !== t16) {
     t17 = <Text dimColor={true}>{t16}</Text>;