Include commit metadata in cmux --version output

tests/test_cli_version_commit_metadata.py

@@ -0,0 +1,85 @@
+#!/usr/bin/env python3
+"""Regression test: CLI version output wiring keeps commit metadata support."""
+
+from __future__ import annotations
+
+import subprocess
+from pathlib import Path
+
+
+def get_repo_root() -> Path:
+    result = subprocess.run(
+        ["git", "rev-parse", "--show-toplevel"],
+        capture_output=True,
+        text=True,
+        check=False,
+    )
+    if result.returncode == 0:
+        return Path(result.stdout.strip())
+    return Path.cwd()
+
+
+def require(content: str, needle: str, message: str, failures: list[str]) -> None:
+    if needle not in content:
+        failures.append(message)
+
+
+def main() -> int:
+    repo_root = get_repo_root()
+    cli_path = repo_root / "CLI" / "cmux.swift"
+    if not cli_path.exists():
+        print(f"FAIL: missing expected file: {cli_path}")
+        return 1
+
+    content = cli_path.read_text(encoding="utf-8")
+    failures: list[str] = []
+
+    require(
+        content,
+        'let commit = info["CMUXCommit"].flatMap { normalizedCommitHash($0) }',
+        "versionSummary no longer reads CMUXCommit metadata",
+        failures,
+    )
+    require(
+        content,
+        'return "\\(baseSummary) [\\(commit)]"',
+        "versionSummary no longer appends commit metadata",
+        failures,
+    )
+    require(
+        content,
+        'if let commit = dictionary["CMUXCommit"] as? String,',
+        "Info.plist parsing no longer reads CMUXCommit",
+        failures,
+    )
+    require(
+        content,
+        "if let commit = gitCommitHash(at: current) {",
+        "Project fallback no longer probes git commit hash",
+        failures,
+    )
+    require(
+        content,
+        '["git", "-C", directory.path, "rev-parse", "--short=9", "HEAD"]',
+        "Git commit probe command changed unexpectedly",
+        failures,
+    )
+    require(
+        content,
+        'normalizedCommitHash(ProcessInfo.processInfo.environment["CMUX_COMMIT"])',
+        "Environment commit fallback (CMUX_COMMIT) is missing",
+        failures,
+    )
+
+    if failures:
+        print("FAIL: CLI version commit metadata regression(s) detected")
+        for failure in failures:
+            print(f"- {failure}")
+        return 1
+
+    print("PASS: CLI version commit metadata wiring is intact")
+    return 0
+
+
+if __name__ == "__main__":
+    raise SystemExit(main())