`grep -oE "^[A-Z_]+="` cannot match a key name containing a digit. This estate
has exactly six such names — all the *_S3_* keys — so a prod audit returned 26
keys against 32 real ones, and reported the S3 and lake credentials as missing
from both live hosts.
They were present the whole time. The phantom was independently reproduced
twice by re-running the same pattern, which is what made it convincing, and it
was briefly recorded as one of two root causes of the lake being unqueryable
(#56). That issue has one cause: the missing duckdb-lake image.
An audit that under-reports is worse than no audit. A missing-secret finding
sends someone to provision a credential that already exists, and in a rotation
tool it would justify writing over one.
Fixed to `^[A-Z][A-Z0-9_]*=` in both the skill and key_gaps.py's docstring. The
match still stops at the `=`, so no value is read — that property is the reason
this grep exists rather than a parser.
Centralis's secrets_gaps carried the same bug and is fixed separately, with a
regression test.
Claude-Session: https://claude.ai/code/session_0182KTMrsTHJc3TcewCatJFY
