The scraper was writing a normalized type label ("text"/"unknown"/...) into
Message.type, but the column was Integer, so the storage layer coerced it to
NULL and the raw code was only recoverable from raw_json. Align with design
§4.3, which specifies two fields: `type` (normalized enum) and `type_raw`
(original code).
- Model (Message): type -> String(32) normalized label; add type_raw Integer
for the raw upstream type code.
- Scraper: _normalize_message sets both `type` (label) and `type_raw`
(coerced int from messageType/type); _is_divider now checks raw -2.
- Repos: type_raw joins _INT_FIELDS; Message.type stored as-is (string).
- Migration 96975050fa79: add type_raw + alter type Integer->String(32),
wrapped in batch_alter_table so it runs on SQLite and MySQL.
- env.py: enable render_as_batch on SQLite (dev/test) for portable batch
migrations; MySQL still uses direct ALTER.
- Tests updated end-to-end (scraper, repos, models).
Co-Authored-By: Claude <noreply@anthropic.com>
浅念
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