feat(followup-audio): confirm role corrections and reextract cached transcripts

server/sql/2026_10_12_followup_audio_reextract.sql

@@ -0,0 +1,26 @@
+-- Apply AFTER soft_delete and BEFORE re-extraction application code. Idempotent additive migration.
+-- Keep additive schema on rollback. Drain queued revisions before restoring pre-revision workers.
+-- History snapshots share the original task expiry, never a renewed retention period.
+SET @fa_db = DATABASE();
+SET @fa_sql = IF((SELECT COUNT(*) FROM information_schema.COLUMNS WHERE TABLE_SCHEMA=@fa_db AND TABLE_NAME='zyt_followup_audio_task' AND COLUMN_NAME='extraction_revision')=0,
+ 'ALTER TABLE zyt_followup_audio_task ADD COLUMN extraction_revision INT UNSIGNED NOT NULL DEFAULT 0, ADD COLUMN extraction_role_override VARCHAR(20) NOT NULL DEFAULT \'\', ADD COLUMN extraction_source_version INT UNSIGNED NOT NULL DEFAULT 0, ADD COLUMN extraction_confirmed_by BIGINT UNSIGNED NOT NULL DEFAULT 0, ADD COLUMN extraction_confirmed_at BIGINT UNSIGNED NOT NULL DEFAULT 0', 'SELECT 1');
+PREPARE fa_stmt FROM @fa_sql;
+EXECUTE fa_stmt;
+DEALLOCATE PREPARE fa_stmt;
+CREATE TABLE IF NOT EXISTS zyt_followup_audio_extraction_history (
+ id BIGINT UNSIGNED NOT NULL AUTO_INCREMENT,
+ task_id BIGINT UNSIGNED NOT NULL,
+ source_version INT UNSIGNED NOT NULL,
+ source_revision INT UNSIGNED NOT NULL,
+ target_revision INT UNSIGNED NOT NULL,
+ channel_roles VARCHAR(20) NOT NULL,
+ actor_id BIGINT UNSIGNED NOT NULL,
+ snapshot_cipher LONGTEXT NULL,
+ created_at BIGINT UNSIGNED NOT NULL,
+ expires_at BIGINT UNSIGNED NOT NULL,
+ purged_at BIGINT UNSIGNED NOT NULL DEFAULT 0,
+ PRIMARY KEY(id),
+ UNIQUE KEY uk_task_source(task_id,source_version),
+ UNIQUE KEY uk_task_revision(task_id,target_revision),
+ KEY idx_expiry(expires_at,purged_at)
+) ENGINE=InnoDB DEFAULT CHARSET=utf8mb4;