knacky 162b6988f8 fix(backend): align regex_extract + outputs.blob() with D-011/D-012 ...

D-011 — `regex_extract(text, pattern, *, group=1, name=None)`:
- engine google-re2 (linear-time, ReDoS-safe), `re` fallback with 1 MB cap.
- first match only.
- no match → raises Jinja2 `TemplateError` (no silent default — cleanup
  templates must fail loud when source string drifts).
- default capture is group 1 with fallback to group(0) when the pattern has
  no groups; named groups via `name="<name>"`.

D-012 — `outputs.blob()`:
- reads the gzip-compressed CAS file from `MIMIC_BLOB_ROOT`.
- 10 MB cap is applied **after** decompression.
- decode UTF-8 with latin-1 fallback; never raises (missing / corrupt /
  non-gzip blobs return empty string, logged at WARNING).

Unit tests rewritten to cover both the new fail-loud regex contract and
the gzip read path. 49 unit tests pass; ruff clean.

2026-05-21 20:44:48 +02:00

3.8 KiB

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