feat: Projects backend slice — auth, primitives, backend, UI (#3)

packages/backend/convex/auth.ts

@@ -36,7 +36,33 @@ const createAuth = (ctx: GenericCtx<DataModel>) =>
 
 export { createAuth };
 
+export interface AuthUserView {
+  readonly id: string;
+  readonly name: string;
+  readonly email: string;
+}
+
+/**
+ * Resolve the authenticated user to the canonical web view. The returned `id`
+ * is the Convex `identity.tokenIdentifier`, the stable authenticated identity
+ * used across organization/conversation/Signal ownership. Returns null when no
+ * identity is present or the Better Auth user row cannot be resolved.
+ */
 export const getCurrentUser = query({
   args: {},
-  handler: (ctx) => authComponent.safeGetAuthUser(ctx),
+  handler: async (ctx): Promise<AuthUserView | null> => {
+    const identity = await ctx.auth.getUserIdentity();
+    if (!identity) {
+      return null;
+    }
+    const authUser = await authComponent.safeGetAuthUser(ctx);
+    if (!authUser) {
+      return null;
+    }
+    return {
+      email: authUser.email,
+      id: identity.tokenIdentifier,
+      name: authUser.name,
+    };
+  },
 });