fix(auto-slash-command): resolve project commands from session dir

Use the plugin session directory instead of process.cwd() when resolving project slash commands. This restores project and opencode-project slashcommand behavior when the runtime cwd differs from the actual session workspace.

Ultraworked with [Sisyphus](https://github.com/code-yeongyu/oh-my-openagent)

Co-authored-by: Sisyphus <clio-agent@sisyphuslabs.ai>

src/hooks/auto-slash-command/executor.ts

@@ -42,11 +42,12 @@ export interface ExecutorOptions {
   pluginsEnabled?: boolean
   enabledPluginsOverride?: Record<string, boolean>
   agent?: string
+  directory?: string
 }
 
 
 async function discoverAllCommands(options?: ExecutorOptions): Promise<CommandInfo[]> {
-  const discoveredCommands = discoverCommandsSync(process.cwd(), {
+  const discoveredCommands = discoverCommandsSync(options?.directory ?? process.cwd(), {
     pluginsEnabled: options?.pluginsEnabled,
     enabledPluginsOverride: options?.enabledPluginsOverride,
   })