feat: RFCP MVP deployed on VPS

Iteration 1:
- Dark theme with 3-way toggle
- Dynamic heatmap gradient (blue→red)
- Radius up to 100km
- Save & Calculate workflow

Iteration 2:
- Terrain overlay toggle
- Batch height operations
- Zoom-dependent heatmap rendering

Infrastructure:
- Backend FastAPI on 8888
- Frontend static build via Caddy
- Systemd services
- Caddy reverse proxy integration

backend/venv/lib/python3.12/site-packages/aiofiles/ospath.py

@@ -0,0 +1,37 @@
+"""Async executor versions of file functions from the os.path module."""
+
+from os import path
+
+from .base import wrap
+
+__all__ = [
+    "abspath",
+    "getatime",
+    "getctime",
+    "getmtime",
+    "getsize",
+    "exists",
+    "isdir",
+    "isfile",
+    "islink",
+    "ismount",
+    "samefile",
+    "sameopenfile",
+]
+
+abspath = wrap(path.abspath)
+
+getatime = wrap(path.getatime)
+getctime = wrap(path.getctime)
+getmtime = wrap(path.getmtime)
+getsize = wrap(path.getsize)
+
+exists = wrap(path.exists)
+
+isdir = wrap(path.isdir)
+isfile = wrap(path.isfile)
+islink = wrap(path.islink)
+ismount = wrap(path.ismount)
+
+samefile = wrap(path.samefile)
+sameopenfile = wrap(path.sameopenfile)