Add HA lifecycle tests and CI

scripts/validate_package.py

@@ -0,0 +1,28 @@
+"""Small local packaging and translation checks; not a replacement for hassfest."""
+import json
+from pathlib import Path
+import subprocess
+
+root = Path(__file__).resolve().parents[1]
+component = root / "custom_components" / "heating_mpc"
+manifest = json.loads((component / "manifest.json").read_text())
+assert manifest["domain"] == "heating_mpc"
+assert manifest["config_flow"] is True
+assert manifest["iot_class"] == "local_polling"
+assert not manifest["requirements"], "Model inference should remain dependency-free"
+json.loads((root / "hacs.json").read_text())
+
+
+def keys(value, prefix=()):
+    if not isinstance(value, dict):
+        return {prefix}
+    return set().union(*(keys(child, (*prefix, key)) for key, child in value.items()))
+
+
+strings = json.loads((component / "strings.json").read_text())
+for language in ("en", "ro"):
+    translated = json.loads((component / "translations" / f"{language}.json").read_text())
+    assert keys(strings) == keys(translated), f"Translation keys differ: {language}"
+tracked = subprocess.check_output(["git", "ls-files", "custom_components"], cwd=root, text=True).splitlines()
+assert not any("__pycache__" in path or path.endswith((".pyc", ".pyo")) for path in tracked)
+print("Package metadata, translations and tracked component files passed")