feat: add episodic history recall

2026-07-22 12:36:13 +08:00
parent 092ed16d82
commit 93d7bc0cd5
17 changed files with 1297 additions and 20 deletions
@@ -779,6 +779,24 @@ export async function migrateSchema(pool) {
    ) ENGINE=InnoDB DEFAULT CHARSET=utf8mb4 COLLATE=utf8mb4_unicode_ci
  `);

+  // Bounded user-visible session text for explicit historical recall.
+  // Rollback: DROP TABLE h5_episodic_memory_items — source snapshots remain intact.
+  await pool.query(`
+    CREATE TABLE IF NOT EXISTS h5_episodic_memory_items (
+      agent_session_id VARCHAR(128) NOT NULL PRIMARY KEY,
+      user_id CHAR(36) NOT NULL,
+      display_title VARCHAR(512) NOT NULL DEFAULT '',
+      summary_text TEXT NOT NULL,
+      search_text MEDIUMTEXT NOT NULL,
+      message_count INT NOT NULL DEFAULT 0,
+      source_updated_at VARCHAR(64) NOT NULL DEFAULT '',
+      session_updated_at BIGINT NOT NULL,
+      indexed_at BIGINT NOT NULL,
+      KEY idx_h5_episodic_user_updated (user_id, session_updated_at),
+      CONSTRAINT fk_h5_episodic_user FOREIGN KEY (user_id) REFERENCES h5_users(id) ON DELETE CASCADE
+    ) ENGINE=InnoDB DEFAULT CHARSET=utf8mb4 COLLATE=utf8mb4_unicode_ci
+  `);
+
  // Session stream replay events (Patch 4c). Rollback: DROP TABLE h5_session_stream_events.
  await pool.query(`
    CREATE TABLE IF NOT EXISTS h5_session_stream_events (