revert(dcp-for-compaction): move back to experimental config from hook (#346)

src/config/schema.ts

@@ -66,7 +66,6 @@ export const HookNameSchema = z.enum([
   "empty-message-sanitizer",
   "thinking-block-validator",
   "ralph-loop",
-  "dcp-for-compaction",
 ])
 
 export const BuiltinCommandNameSchema = z.enum([
@@ -173,6 +172,8 @@ export const ExperimentalConfigSchema = z.object({
   truncate_all_tool_outputs: z.boolean().default(true),
   /** Dynamic context pruning configuration */
   dynamic_context_pruning: DynamicContextPruningConfigSchema.optional(),
+  /** Enable DCP (Dynamic Context Pruning) for compaction - runs first when token limit exceeded (default: false) */
+  dcp_for_compaction: z.boolean().optional(),
 })
 
 export const SkillSourceSchema = z.union([