feat: add Hermes Agent installation guide

.hermes/INSTALL.md

@@ -0,0 +1,86 @@
+# Installing Superpowers for Hermes Agent
+
+Enable superpowers skills in [Hermes Agent](https://github.com/NousResearch/hermes-agent) via the built-in skills system.
+
+## Prerequisites
+
+- Hermes Agent installed (`pip install hermes-agent` or from source)
+- Git
+
+## Installation
+
+**Option A — Symlink (recommended, auto-updates with `git pull`):**
+
+```bash
+git clone https://github.com/obra/superpowers.git ~/.hermes/superpowers
+ln -s ~/.hermes/superpowers/skills/* ~/.hermes/skills/
+```
+
+**Windows (PowerShell):**
+```powershell
+git clone https://github.com/obra/superpowers.git "$env:USERPROFILE\.hermes\superpowers"
+Get-ChildItem "$env:USERPROFILE\.hermes\superpowers\skills" -Directory | ForEach-Object {
+    cmd /c mklink /J "$env:USERPROFILE\.hermes\skills\$($_.Name)" $_.FullName
+}
+```
+
+**Option B — Copy (standalone, no git dependency after install):**
+
+```bash
+git clone https://github.com/obra/superpowers.git /tmp/superpowers
+cp -r /tmp/superpowers/skills/* ~/.hermes/skills/
+rm -rf /tmp/superpowers
+```
+
+## Verify
+
+```bash
+hermes skills list
+```
+
+You should see superpowers skills alongside the built-in ones (e.g. `test-driven-development`, `brainstorming`, `writing-plans`).
+
+Load any skill in a chat session:
+
+```
+/skill test-driven-development
+```
+
+## Updating
+
+If you used the symlink method:
+
+```bash
+cd ~/.hermes/superpowers && git pull
+```
+
+Skills update instantly through the symlinks.
+
+## Uninstalling
+
+```bash
+# Remove symlinks
+for skill in ~/.hermes/skills/*; do
+    [ -L "$skill" ] && readlink "$skill" | grep -q superpowers && rm "$skill"
+done
+
+# Optionally delete the clone
+rm -rf ~/.hermes/superpowers
+```
+
+## How it works
+
+Hermes Agent loads skills from `~/.hermes/skills/`. Each skill is a directory
+with a `SKILL.md` file (YAML frontmatter + markdown body) — the same format
+Superpowers uses natively. No conversion or adapter needed.
+
+Skills are loaded on demand via `/skill <name>` in the CLI, or automatically
+when the agent detects a matching task pattern. Hermes also supports skill
+preloading via `hermes -s test-driven-development` for session-wide activation.
+
+## Compatibility
+
+Hermes Agent has built-in equivalents for several Superpowers skills.
+Installing Superpowers will add its versions alongside the built-ins.
+If both exist, you can load either by name — Superpowers skills will
+appear in `hermes skills list` just like any other skill.