feat: journal dashboard widgets, agent polish, and edit-mode live previews

Journal dashboard widgets and quick-add; rich-text quick-add dialogs.

Dashboard draft sync for live edit previews; assistant bubble + API tools.

Journal UX: stress slider, mood grid, query cap fix.

src/app/login/actions.ts

@@ -0,0 +1,27 @@
+"use server";
+
+import { cookies } from "next/headers";
+import { redirect } from "next/navigation";
+import { signIn } from "@/lib/auth";
+import { createDevSession } from "@/lib/dev-login";
+import { isDevLoginEnabled } from "@/lib/dev-login-config";
+
+export async function signInWithSso() {
+  await signIn("authentik", { redirectTo: "/" });
+}
+
+export async function devLogin() {
+  if (!isDevLoginEnabled()) {
+    throw new Error("Dev login is not enabled");
+  }
+
+  const { sessionToken, expires } = await createDevSession();
+  const cookieStore = await cookies();
+  const base = { httpOnly: true, sameSite: "lax" as const, path: "/", expires };
+  cookieStore.set("authjs.session-token", sessionToken, base);
+  cookieStore.set("__Secure-authjs.session-token", sessionToken, {
+    ...base,
+    secure: true,
+  });
+  redirect("/");
+}