Initial commit: bface library, build fixes, and refreshed docs

- Externalize all @tamagui/* and tamagui subpaths so dist no longer vendors Tamagui.
- Emit TypeScript declarations with vite-plugin-dts; fix package exports types for ui/*.
- Align initEnv with profiles: displayName, brandLogo, api.baseURL, themeColor, uiShell.
- Stabilize tests with Node localStorage file; env tests pass.
- Update README and component docs for services, menus, API client, and development.

src/ui/styles/main.css

@@ -0,0 +1,21 @@
+/* Main Styles */
+
+* {
+  margin: 0;
+  padding: 0;
+  box-sizing: border-box;
+}
+
+body {
+  font-family: system-ui, -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, Oxygen, Ubuntu, Cantarell, sans-serif;
+  line-height: 1.6;
+  color: #333;
+  background-color: #fff;
+}
+
+#app {
+  min-height: 100vh;
+}
+
+/* Add your styles here */
+