fix: add zenable install dir to PATH after install

The installer updates PATH for future shells (via GITHUB_PATH in CI or
shell profile locally) but not the current Python process. After a
successful install, prepend ~/.zenable/bin to the process PATH so
_find_zenable_binary() can locate the binary immediately.

Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>

Author: JonZeolla

hooks/post_gen_project.py

@@ -258,6 +258,13 @@ def opportunistically_install_zenable_tools() -> None:
             LOG.warning("Zenable CLI could not be installed.")
             return
 
+        # The installer updates PATH for future shells/steps (e.g. via
+        # GITHUB_PATH or the user's shell profile) but not the current
+        # process.  Add the default install directory so we can find the
+        # binary immediately.
+        zenable_bin_dir = str(Path.home() / ".zenable" / "bin")
+        os.environ["PATH"] = zenable_bin_dir + os.pathsep + os.environ.get("PATH", "")
+
         zenable_bin = _find_zenable_binary()
         if not zenable_bin:
             LOG.warning("Zenable CLI was installed but could not be found in PATH or default location.")