Flatten to a single package directory

The checkout is now astrape/astrape-ems, not astrape/astrape-ems/<package>. The package
contents move to the repository root and pyproject maps the package name to
'.' via package-dir, with the subpackages listed explicitly.

The systemd units move out to /srv/astrape/deploy/systemd, outside every
repository, because they describe this deployment rather than any one
component.

Verified both install modes: editable, which is how the deployment runs, and
a plain wheel install, which is what the container build does.

Co-Authored-By: Claude Opus 5 (1M context) <noreply@anthropic.com>

deploy/systemd/astrape-sigen.service

@@ -1,25 +0,0 @@
-[Unit]
-Description=Astrape Sigenergy Plant Ingest
-After=network-online.target
-Wants=network-online.target
-
-[Service]
-Type=simple
-User=gibil
-Group=gibil
-WorkingDirectory=/srv/astrape
-Environment=PYTHONUNBUFFERED=1
-Environment=PYTHONDONTWRITEBYTECODE=1
-# WorkingDirectory is /srv/astrape, which also holds the gibil checkout. Without
-# this, Python prepends the working directory to sys.path and the repo root
-# /srv/astrape/gibil shadows the installed package as a namespace portion --
-# gibil.__file__ becomes None and imports work only by accident. All code is
-# installed into the venv, so nothing needs the working directory on sys.path.
-Environment=PYTHONSAFEPATH=1
-
-ExecStart=/srv/astrape/.venv/bin/python -m astrape_ems.scripts.daemons.plant_daemon
-Restart=always
-RestartSec=10
-
-[Install]
-WantedBy=multi-user.target

pyproject.toml

@@ -9,5 +9,9 @@ description = "Energy backend connection: Sigenergy Modbus client and plant stor
 requires-python = ">=3.12"
 dependencies = ["gibil", "psycopg[binary]>=3.2,<4", "pymodbus>=3.8,<4"]
 
-[tool.setuptools.packages.find]
+# Flat layout: this repository *is* the package. package-dir maps astrape_ems to the
-include = ["astrape_ems*"]
+# repository root rather than to a nested astrape_ems/ directory, so the checkout is
+# astrape/astrape-ems and not astrape/astrape-ems/astrape_ems.
+[tool.setuptools]
+packages = ["astrape_ems", "astrape_ems.classes", "astrape_ems.scripts", "astrape_ems.scripts.daemons", "astrape_ems.scripts.debug"]
+package-dir = {"astrape_ems" = "."}