first commit

app/routes/main.py

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+from __future__ import annotations
+
+from functools import lru_cache
+from pathlib import Path
+
+from flask import Blueprint, current_app, redirect, send_from_directory, url_for
+from flask_login import current_user
+
+
+bp = Blueprint("main", __name__)
+
+
+@bp.route("/")
+def index():
+    if current_user.is_authenticated:
+        return redirect(url_for("tasks.my_tasks"))
+    return redirect(url_for("auth.login"))
+
+
+@bp.route("/healthz")
+def healthz():
+    return {"status": "ok"}, 200
+
+
+@bp.route("/manifest.json")
+def manifest():
+    return send_from_directory(current_app.static_folder, "manifest.json", mimetype="application/manifest+json")
+
+
+@bp.route("/service-worker.js")
+def service_worker():
+    response = send_from_directory(current_app.static_folder, "service-worker.js", mimetype="application/javascript")
+    response.headers["Service-Worker-Allowed"] = "/"
+    return response
+
+
+@bp.route("/uploads/<path:filename>")
+def uploads(filename: str):
+    return send_from_directory(current_app.config["UPLOAD_FOLDER"], filename)
+
+
+@lru_cache(maxsize=64)
+def load_icon_svg(name: str, static_folder: str) -> str:
+    path = Path(static_folder) / "icons" / f"{name}.svg"
+    return path.read_text(encoding="utf-8") if path.exists() else ""