diff --git a/migrate_phone_keys_to_new_format.py b/migrate_phone_keys_to_new_format.py
deleted file mode 100644
index 050b2be..0000000
--- a/migrate_phone_keys_to_new_format.py
+++ /dev/null
@@ -1,152 +0,0 @@
-"""Migrate old phone-scoped Redis keys to the current phone-less key format.
-
-Old:
-    telegram-export:session:<phone>
-    telegram-export:run:<phone>:<yyyymmddhhmmss>:<group_id>
-
-New:
-    telegram-export:session
-    telegram-export:run:<yyyymmddhhmmss>:<group_id>
-"""
-
-import argparse
-import json
-import os
-
-import redis
-from dotenv import load_dotenv
-
-PREFIX = 'telegram-export'
-
-
-def redis_key(*parts):
-    return ':'.join([PREFIX, *parts])
-
-
-def parse_args():
-    parser = argparse.ArgumentParser(
-        description='Migrate Redis keys from phone-scoped format to phone-less format.',
-    )
-    parser.add_argument(
-        '--phone',
-        help='Phone part in old Redis keys. Defaults to telegram-export:config phone.',
-    )
-    parser.add_argument(
-        '--dry-run',
-        action='store_true',
-        help='Print planned changes without writing Redis.',
-    )
-    parser.add_argument(
-        '--overwrite',
-        action='store_true',
-        help='Overwrite new-format keys when they already exist.',
-    )
-    parser.add_argument(
-        '--delete-old',
-        action='store_true',
-        help='Delete old phone-scoped keys after successful copy.',
-    )
-    return parser.parse_args()
-
-
-def connect_redis():
-    load_dotenv()
-    redis_url = os.getenv('REDIS_URL')
-    if not redis_url:
-        raise SystemExit('REDIS_URL not set in .env')
-    return redis.from_url(redis_url, decode_responses=True)
-
-
-def resolve_phone(client, phone):
-    if phone:
-        return phone
-
-    raw_config = client.get(redis_key('config'))
-    if not raw_config:
-        raise SystemExit('No config found. Pass --phone explicitly.')
-
-    try:
-        config = json.loads(raw_config)
-    except ValueError as exc:
-        raise SystemExit('telegram-export:config is not valid JSON.') from exc
-
-    config_phone = config.get('phone')
-    if not config_phone:
-        raise SystemExit('Config has no phone. Pass --phone explicitly.')
-    return str(config_phone)
-
-
-def migrate_key(client, old_key, new_key, args):
-    value = client.get(old_key)
-    if value is None:
-        return 'missing'
-
-    if client.exists(new_key) and not args.overwrite:
-        print(f'skip existing: {new_key}')
-        return 'skipped'
-
-    print(f'{old_key} -> {new_key}')
-    if args.dry_run:
-        return 'planned'
-
-    client.set(new_key, value)
-    if args.delete_old:
-        client.delete(old_key)
-    return 'migrated'
-
-
-def migrate_session(client, phone, args):
-    return migrate_key(
-        client,
-        redis_key('session', phone),
-        redis_key('session'),
-        args,
-    )
-
-
-def migrate_runs(client, phone, args):
-    counts = {'planned': 0, 'migrated': 0, 'skipped': 0, 'missing': 0}
-    pattern = redis_key('run', phone, '*')
-
-    for old_key in client.scan_iter(match=pattern):
-        parts = old_key.split(':')
-        if len(parts) != 5:
-            print(f'skip invalid old run key: {old_key}')
-            counts['skipped'] += 1
-            continue
-
-        _, _, _, run_time, group_id = parts
-        result = migrate_key(
-            client,
-            old_key,
-            redis_key('run', run_time, group_id),
-            args,
-        )
-        counts[result] += 1
-
-    return counts
-
-
-def main():
-    args = parse_args()
-    client = connect_redis()
-    phone = resolve_phone(client, args.phone)
-
-    print(f'migrating phone-scoped keys for {phone}')
-    session_result = migrate_session(client, phone, args)
-    run_counts = migrate_runs(client, phone, args)
-
-    print('')
-    print(f'session: {session_result}')
-    print(
-        'runs: '
-        f'{run_counts["migrated"]} migrated, '
-        f'{run_counts["planned"]} planned, '
-        f'{run_counts["skipped"]} skipped'
-    )
-    if args.dry_run:
-        print('dry run only; no Redis keys changed.')
-
-
-if __name__ == '__main__':
-    raise SystemExit(main())