plugin structure

Signed-off-by: Dmytro Stanchiev <git@dmytros.dev>

docs/README.opencode.md

@@ -0,0 +1,25 @@
+# tmux-utils for OpenCode
+
+`tmux-utils` is an OpenCode plugin that adds a tmux-backed `interactive_bash` tool and manages tmux panes for subagent sessions.
+
+## Installation
+
+Add the plugin to `opencode.json`:
+
+```json
+{
+  "plugin": ["tmux-utils"]
+}
+```
+
+Restart OpenCode after installing.
+
+## Features
+
+- `interactive_bash` tool backed by tmux
+- tmux pane lifecycle management for subagent sessions
+- plugin-config-driven tmux behavior
+
+## Entrypoint Layout
+
+The published package exposes an OpenCode-specific wrapper at `.opencode/plugins/tmux-utils.js`, which re-exports the built plugin from `dist/index.js`.