migrate: replace NextAuth.js with Better Auth

- Install better-auth and @better-auth/drizzle-adapter
- Create src/lib/auth.ts with Better Auth configuration using bcrypt
- Update database schema: change auth table IDs from uuid to text
- Update route handler from /api/auth/[...nextauth] to /api/auth/[...all]
- Update tRPC context and middleware for Better Auth session handling
- Update client components to use Better Auth APIs (signIn, signOut)
- Update seed script with text-based IDs and correct account schema
- Fix type errors in wizard components (robotId, optional chaining)
- Fix API paths: api.robots.initialize -> api.robots.plugins.initialize
- Update auth router to use text IDs for Better Auth compatibility

Note: Auth tables were reset - users will need to re-register.

src/trpc/react.js

@@ -0,0 +1,59 @@
+"use client";
+"use strict";
+Object.defineProperty(exports, "__esModule", { value: true });
+exports.api = void 0;
+exports.TRPCReactProvider = TRPCReactProvider;
+var react_query_1 = require("@tanstack/react-query");
+var client_1 = require("@trpc/client");
+var react_query_2 = require("@trpc/react-query");
+var react_1 = require("react");
+var superjson_1 = require("superjson");
+var query_client_1 = require("./query-client");
+var clientQueryClientSingleton = undefined;
+var getQueryClient = function () {
+    if (typeof window === "undefined") {
+        // Server: always make a new query client
+        return (0, query_client_1.createQueryClient)();
+    }
+    // Browser: use singleton pattern to keep the same query client
+    clientQueryClientSingleton !== null && clientQueryClientSingleton !== void 0 ? clientQueryClientSingleton : (clientQueryClientSingleton = (0, query_client_1.createQueryClient)());
+    return clientQueryClientSingleton;
+};
+exports.api = (0, react_query_2.createTRPCReact)();
+function TRPCReactProvider(props) {
+    var queryClient = getQueryClient();
+    var trpcClient = (0, react_1.useState)(function () {
+        return exports.api.createClient({
+            links: [
+                (0, client_1.loggerLink)({
+                    enabled: function (op) {
+                        return process.env.NODE_ENV === "development" ||
+                            (op.direction === "down" && op.result instanceof Error);
+                    },
+                }),
+                (0, client_1.httpBatchStreamLink)({
+                    transformer: superjson_1.default,
+                    url: getBaseUrl() + "/api/trpc",
+                    headers: function () {
+                        var headers = new Headers();
+                        headers.set("x-trpc-source", "nextjs-react");
+                        return headers;
+                    },
+                }),
+            ],
+        });
+    })[0];
+    return (<react_query_1.QueryClientProvider client={queryClient}>
+      <exports.api.Provider client={trpcClient} queryClient={queryClient}>
+        {props.children}
+      </exports.api.Provider>
+    </react_query_1.QueryClientProvider>);
+}
+function getBaseUrl() {
+    var _a;
+    if (typeof window !== "undefined")
+        return window.location.origin;
+    if (process.env.VERCEL_URL)
+        return "https://".concat(process.env.VERCEL_URL);
+    return "http://localhost:".concat((_a = process.env.PORT) !== null && _a !== void 0 ? _a : 3000);
+}