refactor: moved org-agent to its own repository as a submodule

notes/homebrew.org

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+#+TITLE: Homebrew Package Manager
+#+author: User
+#+created: [2026-03-16 Mon 14:28]
+#+DATE: 2026-03-04
+#+FILETAGS: :tools:package-manager:brew
+
+* Homebrew
+:PROPERTIES:
+:ID: 20260304-homebrew
+:CREATED: [2026-03-04 Tue]
+:END:
+
+** Installation
+
+Homebrew installed locally in `~/.linuxbrew/` (Linux user-space installation).
+
+```bash
+# Clone Homebrew
+git clone --depth=1 https://github.com/Homebrew/brew ~/.linuxbrew
+
+# Add to shell
+eval "$(~/.linuxbrew/bin/brew shellenv)"
+```
+
+** Configuration
+
+Added shell integration:
+- ~/.bashrc: `eval "$("$HOME"/linuxbrew/bin/brew shellenv)"`
+- OpenClaw config: `shellEnvExtra` includes brew initialization
+
+** Commands
+
+| Command | Purpose |
+|---------|---------|
+| `brew install <formula>` | Install a package |
+| `brew search <term>` | Search for packages |
+| `brew list` | List installed packages |
+| `brew update` | Update Homebrew itself |
+| `brew upgrade` | Upgrade installed packages |
+
+** Usage in OpenClaw
+
+Skills can now declare Homebrew-based dependencies:
+
+```yaml
+metadata:
+  openclaw:
+    requires:
+      bins: ["emacs", "jq", "ripgrep"]
+    install:
+      - id: homebrew
+        kind: brew
+        formula: emacs
+        bins: ["emacs"]
+```
+
+** Notes
+
+- No sudo required (user-space install)
+- Formulas may build from source (slower than bottles)
+- See https://formulae.brew.sh for available packages