refactor(core): split index.ts and config-handler.ts into focused modules

Main entry point:
- create-hooks.ts, create-tools.ts, create-managers.ts
- plugin-interface.ts: plugin interface types
- plugin/ directory: plugin lifecycle modules

Config handler:
- agent-config-handler.ts, command-config-handler.ts
- tool-config-handler.ts, mcp-config-handler.ts
- provider-config-handler.ts, category-config-resolver.ts
- agent-priority-order.ts, prometheus-agent-config-builder.ts
- plugin-components-loader.ts

src/plugin/unstable-agent-babysitter.ts

@@ -0,0 +1,41 @@
+import type { OhMyOpenCodeConfig } from "../config"
+import type { PluginContext } from "./types"
+
+import { createUnstableAgentBabysitterHook } from "../hooks"
+import type { BackgroundManager } from "../features/background-agent"
+
+export function createUnstableAgentBabysitter(args: {
+  ctx: PluginContext
+  backgroundManager: BackgroundManager
+  pluginConfig: OhMyOpenCodeConfig
+}) {
+  const { ctx, backgroundManager, pluginConfig } = args
+
+  return createUnstableAgentBabysitterHook(
+    {
+      directory: ctx.directory,
+      client: {
+        session: {
+          messages: async ({ path }) => {
+            const result = await ctx.client.session.messages({ path })
+            if (Array.isArray(result)) return result
+            if (typeof result === "object" && result !== null) {
+              return result
+            }
+            return []
+          },
+          prompt: async (promptArgs) => {
+            await ctx.client.session.promptAsync(promptArgs)
+          },
+          promptAsync: async (promptArgs) => {
+            await ctx.client.session.promptAsync(promptArgs)
+          },
+        },
+      },
+    },
+    {
+      backgroundManager,
+      config: pluginConfig.babysitting,
+    },
+  )
+}