feat: Add version tracking via pyproject.toml

- Add pyproject.toml as single source of truth for version and metadata
- Update config.py to read version from pyproject.toml using tomllib
- FastAPI app now loads title and version dynamically from config
- Health endpoint now includes version in response
- Dockerfile updated to include pyproject.toml

🤖 Generated with [Claude Code](https://claude.com/claude-code)

Co-Authored-By: Claude Opus 4.5 <noreply@anthropic.com>

src/config.py

@@ -2,17 +2,37 @@
 Configuration management for The Scheduler.
 Uses Pydantic BaseSettings for type-safe environment variable loading.
 """
+import tomllib
 from functools import lru_cache
+from pathlib import Path
 from pydantic_settings import BaseSettings
 from pydantic import Field
 
 
+def _get_version_from_pyproject() -> tuple[str, str, str]:
+    """Read version info from pyproject.toml."""
+    pyproject_path = Path(__file__).parent.parent / "pyproject.toml"
+    if pyproject_path.exists():
+        with open(pyproject_path, "rb") as f:
+            data = tomllib.load(f)
+            project = data.get("project", {})
+            return (
+                project.get("name", "the-scheduler"),
+                project.get("version", "0.0.0"),
+                project.get("description", ""),
+            )
+    return ("the-scheduler", "0.0.0", "")
+
+
+_PROJECT_NAME, _PROJECT_VERSION, _PROJECT_DESCRIPTION = _get_version_from_pyproject()
+
+
 class Settings(BaseSettings):
     """Application settings loaded from environment variables."""
 
     # Application
-    app_name: str = Field(default="The Scheduler", alias="APP_NAME")
-    app_version: str = Field(default="1.0.0", alias="APP_VERSION")
+    app_name: str = Field(default=_PROJECT_NAME, alias="APP_NAME")
+    app_version: str = Field(default=_PROJECT_VERSION, alias="APP_VERSION")
     debug: bool = Field(default=False, alias="DEBUG")
     host: str = Field(default="0.0.0.0", alias="HOST")
     port: int = Field(default=8090, alias="PORT")

src/main.py

@@ -102,9 +102,10 @@ async def lifespan(app: FastAPI):
 
 
 # FastAPI app
+settings = get_settings()
 app = FastAPI(
-    title="The Scheduler",
-    version="1.0.0",
+    title=settings.app_name,
+    version=settings.app_version,
     description="System-wide maintenance orchestration - backups, doc mirroring, cleanup, task automation",
     lifespan=lifespan
 )
@@ -134,6 +135,7 @@ async def health(
     """Health check endpoint."""
     return {
         "status": "healthy",
+        "version": settings.app_version,
         "scheduler_running": sched.running,
         "jobs_count": len(sched.get_jobs()),
         "database": settings.postgres_db