feat: AI-powered login page with daily greeting and animated blob background

- Add public /api/greeting endpoint that generates a daily AI greeting (cached per day)
- Replace static hero text with dynamic AI greeting (ChatGPT/Claude style)
- Add Stripe-style animated gradient blobs with 14 daily-rotating color palettes
- Use Plus Jakarta Sans font and Sparkles icon for modern AI look
- Update subtitle to "Driven by multiple AI agents"

Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>

apps/Backend/src/app.ts

@@ -5,6 +5,7 @@ import { errorHandler } from "./middlewares/error.middleware";
 import { apiLogger } from "./middlewares/logger.middleware";
 import authRoutes from "./routes/auth";
 import twilioWebhookRoutes from "./routes/twilio-webhooks";
+import greetingRoutes from "./routes/greeting";
 import { authenticateJWT } from "./middlewares/auth.middleware";
 import dotenv from "dotenv";
 import { startBackupCron } from "./cron/backupCheck";
@@ -73,6 +74,7 @@ app.use(
 app.use("/uploads", express.static(path.join(process.cwd(), "uploads")));
 
 app.use("/api/auth", authRoutes);
+app.use("/api/greeting", greetingRoutes);
 // Twilio webhooks are public — Twilio sends no JWT token
 app.use("/api/twilio", express.urlencoded({ extended: false }), twilioWebhookRoutes);
 // All other API routes require JWT

apps/Backend/src/routes/greeting.ts

@@ -0,0 +1,61 @@
+import express, { Request, Response } from "express";
+import { prisma as db } from "@repo/db/client";
+import { resolveAiProvider, getLlm } from "../ai/llm-factory";
+
+const router = express.Router();
+
+const FALLBACK_GREETINGS = [
+  "How can I help you today?",
+  "What can I do for you today?",
+  "Ready when you are.",
+  "What's on your mind today?",
+  "Let's get started.",
+];
+
+let cachedGreeting: { text: string; date: string } | null = null;
+
+function todayKey() {
+  return new Date().toISOString().slice(0, 10);
+}
+
+router.get("/", async (_req: Request, res: Response): Promise<any> => {
+  try {
+    const today = todayKey();
+
+    if (cachedGreeting && cachedGreeting.date === today) {
+      return res.status(200).json({ greeting: cachedGreeting.text });
+    }
+
+    const aiSettings = await db.aiSettings.findFirst();
+    const activeAi = aiSettings ? resolveAiProvider(aiSettings) : null;
+
+    if (!activeAi) {
+      const fallback = FALLBACK_GREETINGS[Math.floor(Math.random() * FALLBACK_GREETINGS.length)];
+      return res.status(200).json({ greeting: fallback });
+    }
+
+    const llm = getLlm(activeAi.provider, activeAi.key, activeAi.model);
+    const result = await llm.invoke([
+      {
+        role: "system",
+        content: "Generate a single short AI greeting, similar to how ChatGPT or Claude greets users. Keep it to one short sentence. Examples of the style: 'How can I help you today?', 'What's on your mind?', 'Ready when you are.', 'What can I do for you today?'. Be warm but concise. Do not use emojis. Do not mention names. Vary each greeting.",
+      },
+      {
+        role: "user",
+        content: "Generate a short greeting.",
+      },
+    ]);
+
+    const greeting = typeof result.content === "string"
+      ? result.content.trim()
+      : FALLBACK_GREETINGS[0]!;
+
+    cachedGreeting = { text: greeting, date: today };
+    return res.status(200).json({ greeting });
+  } catch {
+    const fallback = FALLBACK_GREETINGS[Math.floor(Math.random() * FALLBACK_GREETINGS.length)];
+    return res.status(200).json({ greeting: fallback });
+  }
+});
+
+export default router;