wire profile components, login/register routes, spec-driven auth

- src/main.jsx: add /login, /register, /profile/* routes; wire
  profileComponents from react-auth; pass basePath to Admin
- src/Header.tsx: profile button nav to /profile/me; Login to /login
- src/openapi-config.ts: wire getToken and profileComponents
- react-auth local: sync ProfileCreate, ProfileEdit, ProfileView
- react-openapi local: sync all auth + x-profile changes
  (AppProvider, Admin, ProfileRoutes, SideMenu, types, hooks, etc.)

react-auth/ProfileView.tsx

@@ -0,0 +1,85 @@
+import * as React from "react";
+import {
+  Box,
+  Typography,
+  Button,
+  Avatar,
+  Paper,
+  CircularProgress,
+} from "@mui/material";
+
+export interface ProfileViewProps {
+  name: string;
+  username: string;
+  email: string;
+  onEdit?: () => void;
+  loading?: boolean;
+}
+
+export function ProfileView({
+  name,
+  username,
+  email,
+  onEdit,
+  loading = false,
+}: ProfileViewProps) {
+  const initials = (name || username)
+    .split(" ")
+    .map((s) => s[0])
+    .join("")
+    .toUpperCase()
+    .slice(0, 2);
+
+  return (
+    <Paper
+      sx={{
+        maxWidth: 480,
+        mx: "auto",
+        mt: 4,
+        p: 4,
+        borderRadius: 3,
+      }}
+    >
+      <Box sx={{ display: "flex", alignItems: "center", gap: 3, mb: 3 }}>
+        <Avatar
+          sx={{
+            width: 64,
+            height: 64,
+            bgcolor: "primary.main",
+            fontSize: 24,
+          }}
+        >
+          {initials}
+        </Avatar>
+
+        <Box>
+          <Typography variant="h5" fontWeight="bold">
+            {name || username}
+          </Typography>
+          <Typography variant="body2" color="text.secondary">
+            @{username}
+          </Typography>
+        </Box>
+      </Box>
+
+      <Box sx={{ mb: 2 }}>
+        <Typography variant="overline" color="text.secondary" display="block">
+          Email
+        </Typography>
+        <Typography variant="body1">{email}</Typography>
+      </Box>
+
+      {onEdit && (
+        <Button
+          fullWidth
+          variant="outlined"
+          onClick={onEdit}
+          disabled={loading}
+          sx={{ mt: 1 }}
+        >
+          {loading ? <CircularProgress size={20} /> : "Edit Profile"}
+        </Button>
+      )}
+    </Paper>
+  );
+}