- Remove mock-based tests from plugin tests (headers, singlefile, ublock, captcha2)
- Replace fake cache tests with real double-install tests that verify cache behavior
- Add SCHEMA_0_8 and seed_0_8_data() for testing 0.8.x data directory migrations
- Add TestMigrationFrom08x class with comprehensive migration tests:
- Snapshot count preservation
- Crawl record preservation
- Snapshot-to-crawl relationship preservation
- Tag preservation
- ArchiveResult status preservation
- CLI command verification after migration
- Add more CLI tests for add command (tags, multiple URLs, file input)
- All tests now use real functionality without mocking
Rather than by assuming the JSON file we are parsing has junk at the beginning
(which maybe only used to happen?), try parsing it as-is first, and then fall
back to trying again after skipping the first line
Fixes#1347
