fix(version): resolve __version__ from importlib.metadata, not literal

Both cli/ossmate and mcp/ossmate_mcp had `__version__ = "0.0.1"` literals
in their __init__.py — bump_version.py never touched these so `ossmate
version` printed "0.0.1" while pip showed 0.1.0. Now both read from
importlib.metadata.version() and agree with the installed wheel.

Adds invariant test test_init_modules_dont_hardcode_versions to forbid
the hardcoded form. Caught one day after v0.1.0 shipped — will roll into
the next release rather than burning a 0.1.1 cycle.

Co-Authored-By: Claude Opus 4.7 (1M context) <noreply@anthropic.com>

Author: sunjin12

CHANGELOG.md

@@ -9,6 +9,9 @@ and this project adheres to [Semantic Versioning](https://semver.org/spec/v2.0.0
 
 ## [Unreleased]
 
+### Fixed
+- `ossmate version` and `ossmate_mcp.__version__` resolved to the hardcoded literal `"0.0.1"` instead of the installed package version. Both `__init__.py` modules now read from `importlib.metadata.version()` so they always agree with what `pip show` reports. New invariant test [tests/test_versioning.py](tests/test_versioning.py)::`test_init_modules_dont_hardcode_versions` forbids the hardcoded form going forward — caught the day after v0.1.0 shipped to PyPI
+
 ## [0.1.0] - 2026-04-19
 
 First public release. Reference implementation of every Claude Code extension surface, packaged as both a plugin and a standalone CLI.

cli/ossmate/src/ossmate/__init__.py

@@ -1,3 +1,8 @@
 """Ossmate — Claude-powered co-maintainer CLI."""
 
-__version__ = "0.0.1"
+from importlib.metadata import PackageNotFoundError, version as _pkg_version
+
+try:
+    __version__ = _pkg_version("ossmate")
+except PackageNotFoundError:
+    __version__ = "0.0.0+source"

mcp/ossmate_mcp/src/ossmate_mcp/__init__.py

@@ -1,3 +1,8 @@
 """Ossmate MCP server — OSS maintainer tools exposed via Model Context Protocol."""
 
-__version__ = "0.0.1"
+from importlib.metadata import PackageNotFoundError, version as _pkg_version
+
+try:
+    __version__ = _pkg_version("ossmate-mcp")
+except PackageNotFoundError:
+    __version__ = "0.0.0+source"

tests/test_versioning.py

@@ -115,6 +115,28 @@ def test_marketplace_manifest_has_two_version_locations(self):
         assert "metadata" in data and "version" in data["metadata"]
         assert data["plugins"] and "version" in data["plugins"][0]
 
+    def test_init_modules_dont_hardcode_versions(self):
+        """`__init__.py` files MUST resolve __version__ from importlib.metadata
+        rather than hardcoding the literal — otherwise `bump_version.py`
+        misses them and `ossmate version` lies to users (regression caught
+        in v0.1.0 post-release)."""
+        for init in (
+            REPO_ROOT / "cli" / "ossmate" / "src" / "ossmate" / "__init__.py",
+            REPO_ROOT / "mcp" / "ossmate_mcp" / "src" / "ossmate_mcp" / "__init__.py",
+        ):
+            text = init.read_text(encoding="utf-8")
+            assert "importlib.metadata" in text, (
+                f"{init.relative_to(REPO_ROOT)} must read __version__ from "
+                f"importlib.metadata — hardcoding drifts on every release"
+            )
+            # Belt-and-suspenders: forbid the literal `__version__ = "X.Y.Z"` form.
+            import re as _re
+
+            assert not _re.search(r'^__version__\s*=\s*"\d', text, _re.MULTILINE), (
+                f"{init.relative_to(REPO_ROOT)} hardcodes __version__ — use "
+                f"importlib.metadata.version() instead"
+            )
+
     def test_cli_dep_pin_matches_mcp_version(self, bump):
         """The CLI declares `ossmate-mcp>=X` — X must equal the MCP package
         version, otherwise users get an unsolvable resolver state on first