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/tool-execute-after.ts

@@ -0,0 +1,47 @@
+import { consumeToolMetadata } from "../features/tool-metadata-store"
+import type { CreatedHooks } from "../create-hooks"
+
+export function createToolExecuteAfterHandler(args: {
+  hooks: CreatedHooks
+}): (
+  input: { tool: string; sessionID: string; callID: string },
+  output:
+    | { title: string; output: string; metadata: Record<string, unknown> }
+    | undefined,
+) => Promise<void> {
+  const { hooks } = args
+
+  return async (
+    input: { tool: string; sessionID: string; callID: string },
+    output: { title: string; output: string; metadata: Record<string, unknown> } | undefined,
+  ): Promise<void> => {
+    if (!output) return
+
+    const stored = consumeToolMetadata(input.sessionID, input.callID)
+    if (stored) {
+      if (stored.title) {
+        output.title = stored.title
+      }
+      if (stored.metadata) {
+        output.metadata = { ...output.metadata, ...stored.metadata }
+      }
+    }
+
+    await hooks.claudeCodeHooks?.["tool.execute.after"]?.(input, output)
+    await hooks.toolOutputTruncator?.["tool.execute.after"]?.(input, output)
+    await hooks.preemptiveCompaction?.["tool.execute.after"]?.(input, output)
+    await hooks.contextWindowMonitor?.["tool.execute.after"]?.(input, output)
+    await hooks.commentChecker?.["tool.execute.after"]?.(input, output)
+    await hooks.directoryAgentsInjector?.["tool.execute.after"]?.(input, output)
+    await hooks.directoryReadmeInjector?.["tool.execute.after"]?.(input, output)
+    await hooks.rulesInjector?.["tool.execute.after"]?.(input, output)
+    await hooks.emptyTaskResponseDetector?.["tool.execute.after"]?.(input, output)
+    await hooks.agentUsageReminder?.["tool.execute.after"]?.(input, output)
+    await hooks.categorySkillReminder?.["tool.execute.after"]?.(input, output)
+    await hooks.interactiveBashSession?.["tool.execute.after"]?.(input, output)
+    await hooks.editErrorRecovery?.["tool.execute.after"]?.(input, output)
+    await hooks.delegateTaskRetry?.["tool.execute.after"]?.(input, output)
+    await hooks.atlasHook?.["tool.execute.after"]?.(input, output)
+    await hooks.taskResumeInfo?.["tool.execute.after"]?.(input, output)
+  }
+}