feat: verdict-based ping-pong control with merge_ready finalization

- DONE → merge_ready → owner final turn (commit/push) → completed
- DONE_WITH_CONCERNS → active → owner addresses → ping-pong continues
- BLOCKED/NEEDS_CONTEXT → completed (escalate to user, stop ping-pong)
- Regular feedback → active → ping-pong continues
- Owner detects merge_ready status and finalizes autonomously

src/config.ts

@@ -106,7 +106,9 @@ export const REVIEWER_AGENT_TYPE: AgentType =
 
 /** Service ID for the reviewer based on agent type. */
 export const REVIEWER_SERVICE_ID_FOR_TYPE =
-  REVIEWER_AGENT_TYPE === 'claude-code' ? CLAUDE_SERVICE_ID : CODEX_REVIEW_SERVICE_ID;
+  REVIEWER_AGENT_TYPE === 'claude-code'
+    ? CLAUDE_SERVICE_ID
+    : CODEX_REVIEW_SERVICE_ID;
 
 // Max owner↔reviewer round trips per task. 0 = unlimited.
 const rawMaxRoundTrips = getEnv('PAIRED_MAX_ROUND_TRIPS') || '10';