refactor(dcp-for-compaction): migrate from experimental config to hook system

- Add 'dcp-for-compaction' to HookNameSchema
- Remove dcp_for_compaction from ExperimentalConfigSchema
- Update executor.ts to use dcpForCompaction parameter
- Enable DCP by default (can be disabled via disabled_hooks)
- Update all 4 README files (EN, KO, JA, ZH-CN)

🤖 GENERATED WITH ASSISTANCE OF [OhMyOpenCode](https://github.com/code-yeongyu/oh-my-opencode)

src/index.ts

@@ -274,7 +274,10 @@ const OhMyOpenCodePlugin: Plugin = async (ctx) => {
     disabledHooks: (pluginConfig.claude_code?.hooks ?? true) ? undefined : true,
   });
   const anthropicContextWindowLimitRecovery = isHookEnabled("anthropic-context-window-limit-recovery")
-    ? createAnthropicContextWindowLimitRecoveryHook(ctx, { experimental: pluginConfig.experimental })
+    ? createAnthropicContextWindowLimitRecoveryHook(ctx, {
+        experimental: pluginConfig.experimental,
+        dcpForCompaction: isHookEnabled("dcp-for-compaction"),
+      })
     : null;
   const compactionContextInjector = createCompactionContextInjector();
   const preemptiveCompaction = createPreemptiveCompactionHook(ctx, {