refactor: centralize versioning and stabilize PMA validation

python/Directory.Build.props

@@ -1,6 +1,5 @@
 <Project>
   <PropertyGroup>
-    <GitVersionSkip>true</GitVersionSkip>
     <IlcOptimizationPreference>Speed</IlcOptimizationPreference>
     <RunAnalyzers>false</RunAnalyzers>
     <ErrorReport>none</ErrorReport>

python/SPEC.md

@@ -525,7 +525,6 @@ When pandas is not installed:
 ```xml
 <Project>
   <PropertyGroup>
-    <GitVersionSkip>true</GitVersionSkip>
     <IlcOptimizationPreference>Speed</IlcOptimizationPreference>
     <RunAnalyzers>false</RunAnalyzers>
     <ErrorReport>none</ErrorReport>

python/pyproject.toml

@@ -4,7 +4,7 @@ build-backend = "hatchling.build"
 
 [project]
 name = "quantalib"
-version = "0.1.0"
+dynamic = ["version"]
 description = "High-performance technical analysis wrappers over QuanTAlib NativeAOT"
 readme = "README.md"
 requires-python = ">=3.10"
@@ -23,6 +23,11 @@ filterwarnings = [
     "ignore::pandas.errors.Pandas4Warning",
 ]
 
+[tool.hatch.version]
+source = "regex"
+path = "../lib/VERSION"
+pattern = "(?P<version>\\d+\\.\\d+\\.\\d+)"
+
 [tool.hatch.build.targets.wheel]
 packages = ["quantalib"]
 

python/quantalib/__init__.py

@@ -9,6 +9,8 @@ Usage::
 """
 from __future__ import annotations
 
+from pathlib import Path
+
 from ._loader import load_native_library
 from . import indicators
 from .indicators import *  # noqa: F401, F403 — re-export all indicator functions
@@ -32,4 +34,13 @@ __all__ = [
     "QtlInvalidParamError",
     "QtlInternalError",
 ]
-__version__ = "0.1.0"
+def _resolve_version() -> str:
+    version_file = Path(__file__).resolve().parents[2] / "lib" / "VERSION"
+    if version_file.exists():
+        version = version_file.read_text(encoding="utf-8").strip()
+        if version:
+            return version
+    return "0.0.0"
+
+
+__version__ = _resolve_version()