Pin the version against pyproject; point the bug template at --version

.github/ISSUE_TEMPLATE/bug_report.yml

@@ -11,7 +11,7 @@ body:
     id: version
     attributes:
       label: ToolTrace Bench version
-      placeholder: "0.1.0 (pip show tooltrace-bench)"
+      placeholder: "output of: tooltrace --version"
     validations:
       required: true
   - type: textarea

tests/test_version_is_reportable.py

@@ -0,0 +1,35 @@
+"""`tooltrace --version` works today; this keeps it working and honest.
+
+The sibling project api-verity-lab carried `__version__ = "0.1.0"` in the
+package while `pyproject.toml` said 0.2.0 — nothing tested the two against
+each other, so the drift sat there. This repo prints FRAMEWORK_VERSION from
+`tooltrace.core.versions`, which is a third place the number can be written
+down; all three have to agree.
+"""
+
+from __future__ import annotations
+
+import pathlib
+import tomllib
+
+import pytest
+from tooltrace.cli.main import main
+from tooltrace.core.versions import FRAMEWORK_VERSION
+
+PYPROJECT = pathlib.Path(__file__).resolve().parents[1] / "pyproject.toml"
+
+
+def _declared_version() -> str:
+    data = tomllib.loads(PYPROJECT.read_text(encoding="utf-8"))
+    return str(data["project"]["version"])
+
+
+def test_framework_version_matches_pyproject() -> None:
+    assert _declared_version() == FRAMEWORK_VERSION
+
+
+def test_version_flag_exits_zero_and_prints_the_version(
+    capsys: pytest.CaptureFixture[str],
+) -> None:
+    assert main(["--version"]) == 0
+    assert capsys.readouterr().out.strip() == FRAMEWORK_VERSION