chore: prepare Hermes for Homebrew packaging (#4099)

Co-authored-by: Yabuku-xD <78594762+Yabuku-xD@users.noreply.github.com>

packaging/homebrew/README.md

@@ -0,0 +1,14 @@
+Homebrew packaging notes for Hermes Agent.
+
+Use `packaging/homebrew/hermes-agent.rb` as a tap or `homebrew-core` starting point.
+
+Key choices:
+- Stable builds should target the semver-named sdist asset attached to each GitHub release, not the CalVer tag tarball.
+- `faster-whisper` now lives in the `voice` extra, which keeps wheel-only transitive dependencies out of the base Homebrew formula.
+- The wrapper exports `HERMES_BUNDLED_SKILLS`, `HERMES_OPTIONAL_SKILLS`, and `HERMES_MANAGED=homebrew` so packaged installs keep runtime assets and defer upgrades to Homebrew.
+
+Typical update flow:
+1. Bump the formula `url`, `version`, and `sha256`.
+2. Refresh Python resources with `brew update-python-resources --print-only hermes-agent`.
+3. Keep `ignore_packages: %w[certifi cryptography pydantic]`.
+4. Verify `brew audit --new --strict hermes-agent` and `brew test hermes-agent`.

packaging/homebrew/hermes-agent.rb

@@ -0,0 +1,48 @@
+class HermesAgent < Formula
+  include Language::Python::Virtualenv
+
+  desc "Self-improving AI agent that creates skills from experience"
+  homepage "https://hermes-agent.nousresearch.com"
+  # Stable source should point at the semver-named sdist asset attached by
+  # scripts/release.py, not the CalVer tag tarball.
+  url "https://github.com/NousResearch/hermes-agent/releases/download/v2026.3.30/hermes_agent-0.6.0.tar.gz"
+  sha256 "<replace-with-release-asset-sha256>"
+  license "MIT"
+
+  depends_on "certifi" => :no_linkage
+  depends_on "cryptography" => :no_linkage
+  depends_on "libyaml"
+  depends_on "python@3.14"
+
+  pypi_packages ignore_packages: %w[certifi cryptography pydantic]
+
+  # Refresh resource stanzas after bumping the source url/version:
+  #   brew update-python-resources --print-only hermes-agent
+
+  def install
+    venv = virtualenv_create(libexec, "python3.14")
+    venv.pip_install resources
+    venv.pip_install buildpath
+
+    pkgshare.install "skills", "optional-skills"
+
+    %w[hermes hermes-agent hermes-acp].each do |exe|
+      next unless (libexec/"bin"/exe).exist?
+
+      (bin/exe).write_env_script(
+        libexec/"bin"/exe,
+        HERMES_BUNDLED_SKILLS: pkgshare/"skills",
+        HERMES_OPTIONAL_SKILLS: pkgshare/"optional-skills",
+        HERMES_MANAGED: "homebrew"
+      )
+    end
+  end
+
+  test do
+    assert_match "Hermes Agent v#{version}", shell_output("#{bin}/hermes version")
+
+    managed = shell_output("#{bin}/hermes update 2>&1")
+    assert_match "managed by Homebrew", managed
+    assert_match "brew upgrade hermes-agent", managed
+  end
+end