fix(setup): extract version from filename for mirror installs

Type: url entries in requirements.yml don't have a version field —
the version is embedded in the tarball filename. Extract it with a
regex so ansible-galaxy can install the correct version from the
local file.

Generated with [Devin](https://devin.ai)

Co-Authored-By: Devin <158243242+devin-ai-integration[bot]@users.noreply.github.com>

src/devx/tools/setup.py

@@ -138,10 +138,14 @@ def _try_gitea_mirror_install(galaxy: str, requirements: Path) -> bool:
                 click.echo(f"  WARN: mirror download failed for {entry.get('name')}: {e}")
                 click.echo("  Falling back to galaxy.ansible.com")
                 return False
+            # Extract version from filename (e.g. ansible-posix-2.2.2.tar.gz)
+            import re
+
+            ver_match = re.search(r"(\d+\.\d+\.\d+)", filename)
             local_entries.append(
                 {
                     "name": entry["name"],
-                    "version": entry.get("version"),
+                    "version": ver_match.group(1) if ver_match else entry.get("version"),
                     "type": "file",
                     "source": str(dest),
                 }