paired: decouple unsafe host mode from fresh reviewer sessions

src/config/load-config.ts

@@ -227,6 +227,10 @@ export function loadConfig(): AppConfig {
         'PAIRED_CARRY_FORWARD_LATEST_OWNER_FINAL',
         false,
       ),
+      forceFreshClaudeReviewerSessionInUnsafeHostMode: readBoolean(
+        'PAIRED_FORCE_FRESH_CLAUDE_REVIEWER_SESSION',
+        false,
+      ),
       agentLanguage: readText('AGENT_LANGUAGE') ?? '',
       arbiterDeadlockThreshold: readInteger('ARBITER_DEADLOCK_THRESHOLD', 2),
       maxRoundTrips,

src/config/schema.ts

@@ -54,6 +54,7 @@ export interface AppConfig {
     arbiterAgentType?: AgentType;
     arbiterServiceId: string | null;
     carryForwardLatestOwnerFinal: boolean;
+    forceFreshClaudeReviewerSessionInUnsafeHostMode: boolean;
     agentLanguage: string;
     arbiterDeadlockThreshold: number;
     maxRoundTrips: number;