fix(app): eliminate startup white screen by replacing @iarna/toml with browser-friendly smol-toml

- chore(deps): switch TOML dependency from @iarna/toml to smol-toml and update lockfile
- feat(mcp): add TOML editing/validation for Codex while keeping JSON for Claude; support auto ID extraction from TOML and JSON->TOML conversion for wizard output; add pre-submit required checks (stdio.command / http.url)
- refactor(mcp): unify JSON/TOML validation errors via i18n; add formatTomlError for consistent, localized messages; consolidate state into formConfig/configError
- feat(i18n): add TOML labels/placeholders and error keys (tomlConfig, tomlPlaceholder, tomlInvalid)
- feat(utils): introduce tomlUtils with parse/stringify/validate/convert helpers using smol-toml; provide tomlToMcpServer, mcpServerToToml, extractIdFromToml, validateToml
- build: confirm Vite no longer externalizes Node builtins during build; renderer builds without 'Module 'stream' has been externalized' warning

package.json

@@ -31,6 +31,7 @@
     "@codemirror/state": "^6.5.2",
     "@codemirror/theme-one-dark": "^6.1.3",
     "@codemirror/view": "^6.38.2",
+    "smol-toml": "^1.4.2",
     "@tailwindcss/vite": "^4.1.13",
     "@tauri-apps/api": "^2.8.0",
     "@tauri-apps/plugin-dialog": "^2.4.0",