Add blueprints for authentication, admin, dashboard, gallery, generation, and profile routes

- Created `__init__.py` for blueprint registration.
- Implemented `auth.py` for user authentication (login, register, logout).
- Added `admin.py` for admin functionalities (user management, stats).
- Developed `dashboard.py` for user dashboard displaying user info and generated content.
- Created `gallery.py` for managing and displaying images and videos.
- Implemented `generate.py` for text, image, and video generation functionalities.
- Added `profile.py` for user profile management.
- Updated templates to reflect new route structures and improve navigation.

frontend/app/routes/dashboard.py

@@ -0,0 +1,29 @@
+"""Dashboard blueprint."""
+from flask import Blueprint, render_template, session
+
+from ..helpers import _api, login_required
+
+dashboard_bp = Blueprint("dashboard", __name__)
+
+
+@dashboard_bp.get("/dashboard")
+@login_required
+def index():
+    token = session["access_token"]
+    resp = _api("GET", "/users/me", token=token)
+    user = resp.json() if resp.status_code == 200 else {}
+    img_resp = _api("GET", "/images/", token=token)
+    images = img_resp.json() if img_resp.status_code == 200 else []
+    gen_resp = _api("GET", "/generate/images", token=token)
+    generated_images = gen_resp.json() if gen_resp.status_code == 200 else []
+
+    vid_resp = _api("GET", "/generate/videos", token=token)
+    videos = vid_resp.json() if vid_resp.status_code == 200 else []
+    pending_videos = [v for v in videos if v.get(
+        "status") not in ("completed", "failed")]
+    completed_videos = [v for v in videos if v.get("status") == "completed"]
+
+    return render_template("dashboard.html", user=user, images=images,
+                           generated_images=generated_images,
+                           pending_videos=pending_videos,
+                           completed_videos=completed_videos)