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/profile.py

@@ -0,0 +1,33 @@
+"""Profile blueprint."""
+from flask import Blueprint, flash, redirect, render_template, request, session, url_for
+
+from ..helpers import _api, login_required
+
+profile_bp = Blueprint("profile", __name__)
+
+
+@profile_bp.route("/users/profile", methods=["GET", "POST"])
+@login_required
+def index():
+    token = session["access_token"]
+    if request.method == "POST":
+        payload: dict = {}
+        new_email = request.form.get("email", "").strip()
+        new_password = request.form.get("password", "").strip()
+        if new_email:
+            payload["email"] = new_email
+        if new_password:
+            payload["password"] = new_password
+        if payload:
+            resp = _api("PUT", "/users/me", token=token, json=payload)
+            if resp.status_code == 200:
+                updated = resp.json()
+                session["user_email"] = updated.get(
+                    "email", session.get("user_email", ""))
+                flash("Profile updated.", "success")
+            else:
+                flash(resp.json().get("detail", "Update failed."), "error")
+        return redirect(url_for("profile.index"))
+    resp = _api("GET", "/users/me", token=token)
+    user = resp.json() if resp.status_code == 200 else {}
+    return render_template("profile.html", user=user)