refactor: split paired db helpers

src/db/paired-turn-outputs.ts

@@ -0,0 +1,68 @@
+import { Database } from 'bun:sqlite';
+
+import { logger } from '../logger.js';
+import { PairedRoomRole, PairedTurnOutput } from '../types.js';
+
+const MAX_TURN_OUTPUT_CHARS = 50_000;
+
+export function insertPairedTurnOutputInDatabase(
+  database: Database,
+  taskId: string,
+  turnNumber: number,
+  role: PairedRoomRole,
+  outputText: string,
+): void {
+  if (outputText.length > MAX_TURN_OUTPUT_CHARS) {
+    logger.warn(
+      {
+        taskId,
+        turnNumber,
+        role,
+        originalLen: outputText.length,
+        maxLen: MAX_TURN_OUTPUT_CHARS,
+      },
+      'Paired turn output truncated — agent output exceeds storage limit',
+    );
+  }
+
+  database
+    .prepare(
+      `INSERT OR REPLACE INTO paired_turn_outputs
+         (task_id, turn_number, role, output_text, created_at)
+       VALUES (?, ?, ?, ?, ?)`,
+    )
+    .run(
+      taskId,
+      turnNumber,
+      role,
+      outputText.slice(0, MAX_TURN_OUTPUT_CHARS),
+      new Date().toISOString(),
+    );
+}
+
+export function getPairedTurnOutputsFromDatabase(
+  database: Database,
+  taskId: string,
+): PairedTurnOutput[] {
+  return database
+    .prepare(
+      `SELECT * FROM paired_turn_outputs
+        WHERE task_id = ?
+        ORDER BY turn_number ASC`,
+    )
+    .all(taskId) as PairedTurnOutput[];
+}
+
+export function getLatestTurnNumberFromDatabase(
+  database: Database,
+  taskId: string,
+): number {
+  const row = database
+    .prepare(
+      `SELECT MAX(turn_number) as max_turn
+        FROM paired_turn_outputs
+        WHERE task_id = ?`,
+    )
+    .get(taskId) as { max_turn: number | null } | undefined;
+  return row?.max_turn ?? 0;
+}