fix(todo-continuation-enforcer): add compaction epoch state

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

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

src/hooks/todo-continuation-enforcer/types.ts

@@ -35,6 +35,8 @@ export interface SessionState {
   stagnationCount: number
   consecutiveFailures: number
   recentCompactionAt?: number
+  recentCompactionEpoch?: number
+  acknowledgedCompactionEpoch?: number
 }
 
 export interface MessageInfo {