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/admin.py

@@ -0,0 +1,75 @@
+"""Admin blueprint."""
+from flask import Blueprint, flash, jsonify, redirect, render_template, request, session, url_for
+
+from ..helpers import _api, admin_required
+
+admin_bp = Blueprint("admin", __name__)
+
+
+@admin_bp.get("/admin")
+@admin_required
+def index():
+    token = session["access_token"]
+    stats_resp = _api("GET", "/admin/stats", token=token)
+    users_resp = _api("GET", "/users", token=token)
+    stats = stats_resp.json() if stats_resp.status_code == 200 else {}
+    users = users_resp.json() if users_resp.status_code == 200 else []
+    return render_template("admin.html", stats=stats, users=users)
+
+
+@admin_bp.post("/admin/users/<user_id>/role")
+@admin_required
+def set_role(user_id: str):
+    role = request.form.get("role", "user")
+    _api("PUT", f"/users/{user_id}/role",
+         token=session["access_token"], json={"role": role})
+    flash(f"Role updated to '{role}'.", "success")
+    return redirect(url_for("admin.index"))
+
+
+@admin_bp.post("/admin/users/<user_id>/delete")
+@admin_required
+def delete_user(user_id: str):
+    _api("DELETE", f"/users/{user_id}", token=session["access_token"])
+    flash("User deleted.", "success")
+    return redirect(url_for("admin.index"))
+
+
+@admin_bp.get("/admin/models")
+@admin_required
+def models():
+    """Show model cache status and list all models."""
+    return render_template("admin/models.html")
+
+
+# ── Admin API proxies (same-origin for browser JS) ────────────────────────
+
+@admin_bp.get("/api/admin/videos")
+@admin_required
+def list_videos():
+    resp = _api("GET", "/admin/videos", token=session["access_token"])
+    return jsonify(resp.json()), resp.status_code
+
+
+@admin_bp.post("/api/admin/videos/<job_id>/retry")
+@admin_required
+def retry_video(job_id: str):
+    resp = _api(
+        "POST", f"/admin/videos/{job_id}/retry", token=session["access_token"])
+    return jsonify(resp.json()), resp.status_code
+
+
+@admin_bp.post("/api/admin/videos/<job_id>/cancel")
+@admin_required
+def cancel_video(job_id: str):
+    resp = _api(
+        "POST", f"/admin/videos/{job_id}/cancel", token=session["access_token"])
+    return jsonify(resp.json()), resp.status_code
+
+
+@admin_bp.delete("/api/admin/videos/<job_id>")
+@admin_required
+def delete_video(job_id: str):
+    resp = _api(
+        "DELETE", f"/admin/videos/{job_id}", token=session["access_token"])
+    return jsonify(resp.json()), resp.status_code