Reformats import blocks, function signatures, and expression line wrapping
in stemedb-api handlers, stemedb-core serde/source_record, and serde_helpers.
Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>
- Add `content: Option<String>` to SourceRecord with rkyv schema evolution
(LegacySourceRecord compat deserializer for backward compatibility)
- Add MAX_SOURCE_CONTENT_LEN (1MB) limit with API validation
- Strip content from list responses, include in single-source GET
- Update Go SDK RegisterSourceRequest with Content field
- FCM pipeline extracts PDF text via pdftotext and passes to registration
- Dashboard impact panel fetches and displays source content with expand/collapse
- Add feed endpoint, dashboard feed panel, and signed assertion support
- Update data-structures.md, API docs, and storage docs
Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>
