feat(hooks): add TASK_CONTINUATION system directive and hook name

src/config/schema.ts

@@ -57,6 +57,7 @@ export const AgentNameSchema = BuiltinAgentNameSchema
 
 export const HookNameSchema = z.enum([
   "todo-continuation-enforcer",
+  "task-continuation-enforcer",
   "context-window-monitor",
   "session-recovery",
   "session-notification",

src/shared/system-directive.ts

@@ -48,6 +48,7 @@ export function removeSystemReminders(text: string): string {
 
 export const SystemDirectiveTypes = {
   TODO_CONTINUATION: "TODO CONTINUATION",
+  TASK_CONTINUATION: "TASK CONTINUATION",
   RALPH_LOOP: "RALPH LOOP",
   BOULDER_CONTINUATION: "BOULDER CONTINUATION",
   DELEGATION_REQUIRED: "DELEGATION REQUIRED",