fix(i18n): localize built-in tool names

[Colafornia]

Summary

Built-in tool names can display persisted labels from a different locale. Existing session history can therefore show Chinese labels in English mode or fixed English labels in Chinese mode.

Resolve Maka-owned tool names from the active UI locale instead. Group each tool's translations in one typed table so every supported locale requires a label.

Preserve provider labels for external tools and fall back to their canonical identifiers. Keep the product binding catalog unchanged.

Refs #3962

Verification

• npm --workspace @maka/ui test — 234 tests passed
• npm --workspace @maka/core run build — passed
• Full runtime tests were blocked during compilation by unrelated Slack dependency and HttpsProxyAgent type errors

AI use

Select exactly one:

• No generative tool made a substantive contribution
• Generative tooling made a substantive contribution

Tool(s) and scope: OpenAI Codex helped inspect the implementation, revise the locale boundary, update tests, and draft this PR.

Checklist

• Tests cover the change and fail without it
• Lint, format, typecheck and the affected suites pass locally

Does this PR entail a change in behavior?

• Yes — described under Summary above
• No

[Astro-Han]

Reviewed at exact head 5452ebeebf692b1dfd4875772a4851748e3b421c. Approving with comments (P2 only).

Built-in presentation now resolves from the active UI locale instead of whatever displayName was persisted; external/MCP provider labels are preserved. BUILTIN_TOOL_LABELS + getBuiltinToolLabel / resolveToolName / resolveToolDisplayName is the right split. Core search no longer owns Chinese formatSearchResultSummary; Desktop formats via formatThreadSearchResultSummary, and SearchHistory uses English wire names. Thread search still indexes tool intent only, so localized labels are not searchable — same as before, and the right call.

Locale completeness for listed tools is compile-time (Record<UiLocale, string> against UI_LOCALES = zh | en). Catalog membership is only a unit test.

[P2] Close BUILTIN_TOOL_LABELS over a catalog name union so the next MAKA_CATALOG_TOOLS row cannot silently revive persisted-locale labels.

[P2] Derive BUILTIN_PROXY_PREFIXES from the desktop offer IDs (desktop_browser, desktop_computer_use, desktop_settings, desktop_rive) or pin them with a contract test. Browser/Rive still persist zh displayName.

CI on this SHA is green. Not blocking.

[Astro-Han]

Need a rebase~