hermes - 💡(How to fix) Fix Bug: Dashboard plugin install can falsely report git missing due to PATH [4 pull requests]

Summary

Installing a plugin from the Dashboard/API can fail with:

git is not installed or not in PATH.

…even when git is installed and available in normal shell sessions.

Reproduction

1. Ensure git is installed (e.g. /usr/bin/git exists and works in shell).
2. In a runtime where Hermes Dashboard/API is launched with a reduced PATH, install a plugin from dashboard (or call the same dashboard install route).
3. Observe failure: git is not installed or not in PATH.

Root cause

hermes_cli/plugins_cmd.py invokes git as a bare "git" in subprocess calls:

• clone path in _install_plugin_core
• pull path in _git_pull_plugin_dir

If the process PATH is minimal, subprocess.run(["git", ...]) raises FileNotFoundError even though git exists in standard absolute locations.

Proposed fix

Resolve git executable once with fallback absolute paths:

• first shutil.which("git")
• then /usr/bin/git, /usr/local/bin/git, /bin/git when executable

Use the resolved executable for both clone and pull paths.

Impact

• Fixes false-negative install/update failures in dashboard/non-interactive runtimes.
• Keeps existing error text when git truly does not exist.