fix: Adapt versioning scheme to Home Assistant and switch to uv (#896)

Home Assistant expects versioning always increases numbers. Add
a date component to the development version to comply with this
expectation. The scheme is now 0.0.0.dev<date><hash>.

Use uv for creating and managing the virtual environment for developement.
This enourmously speeds up dependency updates. For this change
dependency requirements are now solely handled in pyproject.toml.
requirements.tx and requirements-dev.txt are deleted.

Signed-off-by: Bobby Noelte <b0661n0e17e@gmail.com>

scripts/update_version.py

@@ -11,6 +11,12 @@ import sys
 from pathlib import Path
 from typing import List
 
+# Add the src directory to sys.path so import akkudoktoreos works in all cases
+PROJECT_ROOT = Path(__file__).parent.parent
+SRC_DIR = PROJECT_ROOT / "src"
+sys.path.insert(0, str(SRC_DIR))
+
+
 # --- Patterns to match version strings ---
 VERSION_PATTERNS = [
     # Python: __version__ = "1.2.3"
@@ -88,6 +94,21 @@ def update_version_in_file(file_path: Path, new_version: str) -> bool:
     return file_would_be_updated
 
 
+def update_version_date_file() -> str:
+    """Write current version date to __version_date__.py"""
+    from akkudoktoreos.core.version import VERSION_DATE_FILE, _version_date_hash
+
+    version_date, _ =  _version_date_hash()
+    version_date_str =  version_date.strftime('%Y-%m-%dT%H:%M:%SZ')
+    content = f'VERSION_DATE = "{version_date_str}"\n'
+
+    VERSION_DATE_FILE.write_text(content)
+
+    print(f"Updated {VERSION_DATE_FILE} with UTC date {version_date_str}")
+
+    return str(VERSION_DATE_FILE)
+
+
 def main(version: str, files: List[str]):
     if not version:
         raise ValueError("No version provided")
@@ -103,6 +124,8 @@ def main(version: str, files: List[str]):
         if update_version_in_file(path, version):
             updated_files.append(str(path))
 
+    updated_files.append(update_version_date_file())
+
     if updated_files:
         print(f"Updated files: {', '.join(updated_files)}")
     else: