feat: support opencode v2 (dual V1+V2)

README.md

@@ -36,9 +36,21 @@ The plugin will extract the command from the code block and run it when the agen
 
 ## Configuration
 
+This plugin supports opencode V1 (>= 1.18.29) and V2.
+
 ### Plugin Options
 
-The plugin accepts an `maxRetries` option (default: `10`) that controls the maximum number of times the agent will be re-prompted when the check command fails:
+The plugin accepts a `maxRetries` option (default: `10`) that controls the maximum number of times the agent will be re-prompted when the check command fails.
+
+V2:
+
+```jsonc
+{
+  "plugin": [{ "package": "bacluc-opencode-completion-check-command@<version>", "options": { "maxRetries": 10 } }],
+}
+```
+
+V1:
 
 ```json
 {
@@ -50,7 +62,7 @@ Setting `maxRetries` to `0` disables re-prompting entirely — the command runs
 
 ### Custom Command Template
 
-The `/completion-check-command` is automatically registered by the plugin's `config` hook. If you want to override the template, add it to your `opencode.json`:
+The `/completion-check-command` is automatically registered by the plugin. In V1 the plugin's `config` hook registers it, and an `opencode.json` override replaces the template (the plugin's `command.execute.before` hook still captures the command from the code block). V1 uses `command` and the `{{arguments}}` placeholder:
 
 ```json
 {
@@ -63,6 +75,8 @@ The `/completion-check-command` is automatically registered by the plugin's `con
 }
 ```
 
+In V2 the plugin registers the command through the plugin API (`ctx.command.transform`) and reads the raw arguments itself, so the template cannot be overridden with a `command` entry: a same-named `command.completion-check-command` from config replaces the plugin's implementation and breaks command registration.
+
 ### Default Command Sources
 
 On `session.created` the plugin resolves the default command in precedence order:

opencode.json

@@ -1,10 +1,4 @@
 {
   "$schema": "https://opencode.ai/config.json",
-  "command": {
-    "completion-check-command": {
-      "template": "The user wants to verify task completion after you finish. Run your task, and when you are done, a completion check will automatically run to verify your work.\n\nThe completion check command is:\n{{arguments}}",
-      "description": "Register a shell command that will be executed after the agent finishes to verify task completion. Include a markdown code block with the shell command to run."
-    }
-  },
-  "plugin": [[".", {}]]
+  "plugin": [{ "package": ".", "options": {} }]
 }