Add missing /admin/edit/<id> route (fix BuildError)

app.py

@@ -148,6 +148,32 @@ def create_app():
         base_url = request.host_url.rstrip("/")
         return render_template("admin.html", pages=pages, base_url=base_url)
 
+    @app.route("/admin/edit/<int:pid>", methods=["GET", "POST"])
+    def admin_edit(pid: int):
+        login_required()
+        db = get_db()
+        if request.method == "POST":
+            title = request.form.get("title", "").strip()
+            html = request.form.get("html", "").strip()
+            if not html:
+                flash("HTML не может быть пустым.", "error")
+            else:
+                db.execute(
+                    "UPDATE pages SET title = ?, html = ? WHERE id = ?",
+                    (title, html, pid),
+                )
+                db.commit()
+                flash("Страница обновлена.", "success")
+                return redirect(url_for("admin"))
+
+        row = db.execute(
+            "SELECT id, uuid, title, html, created_at FROM pages WHERE id = ?",
+            (pid,),
+        ).fetchone()
+        if row is None:
+            abort(404)
+        return render_template("edit.html", page=row)
+
     @app.route("/admin/delete/<int:pid>", methods=["POST"])
     def admin_delete(pid: int):
         login_required()