chore(agents): rename install script to install-rules

agents/install-rules.py

@@ -0,0 +1,45 @@
+#!/usr/bin/env python3
+
+import os
+import sys
+from pathlib import Path
+
+
+def install_one(target_dir: Path, source_file: Path, target_name: str) -> None:
+    if not target_dir.exists():
+        print(f"skipped  {target_dir} (not found)")
+        return
+
+    target_file = target_dir / target_name
+
+    if target_file.exists() or target_file.is_symlink():
+        target_file.unlink()
+
+    target_file.symlink_to(source_file)
+    print(f"linked  {target_file} -> {source_file}")
+
+
+def main() -> int:
+    script_dir = Path(__file__).resolve().parent
+    agents_file = script_dir / "AGENTS.md"
+
+    if not agents_file.is_file():
+        print(f"Missing source file: {agents_file}", file=sys.stderr)
+        return 1
+
+    codex_dir = Path(os.environ.get("CODEX_HOME", "~/.codex")).expanduser()
+    xdg_config_home = Path(os.environ.get("XDG_CONFIG_HOME", "~/.config")).expanduser()
+    opencode_dir = xdg_config_home / "opencode"
+    claude_dir = Path("~/.claude").expanduser()
+    gemini_dir = Path("~/.gemini").expanduser()
+
+    install_one(codex_dir, agents_file, "AGENTS.md")
+    install_one(opencode_dir, agents_file, "AGENTS.md")
+    install_one(claude_dir, agents_file, "CLAUDE.md")
+    install_one(gemini_dir, agents_file, "GEMINI.md")
+
+    return 0
+
+
+if __name__ == "__main__":
+    raise SystemExit(main())