A pair now gives a fixed-side negative only when the fixed side's source declares the
labelled function (the excerpt builder's matcher; a name on a code line where the matcher
resolves neither side), or when a deterministic rename at a distinct fix commit replaces it
(one new function, same parameter list, changed body: provenance fixed_side_moved). Anything
else is counted under pair_fixed_side.absent_fixed_side, not labelled.
108 pair labels lose their negative: 80 seeded pointer pairs whose fixed side is a guard
helper of the same commit, and 28 Real-Vuln-Benchmark traps whose fixed side is a sibling
handler of the same snapshot (4 of those handlers are labelled positives themselves). The
memory build no longer substitutes the catalog's fix_function on the fixed side. The pair
cache is an allowed label-source tree so pointer sides are read through the guard.
Snapshot: benchmarks/measurements/2026-10-01-decision-engine-labels (counts only).
Co-Authored-By: Claude Opus 5.5 <[email protected]>
Claude-Session: https://claude.ai/code/session_01EmM1j46qgKMh3zqD1QMwEo
learn/excerpt.py: the labelled function at its pin as numbered lines, bounded
(80 lines / 4,000 chars for candidates, 40 / 2,000 for memory examples),
centred on focus lines; advisory ids anywhere and comments with security
wording (labels.security_reason, multilingual) become <redacted>; owner,
owner/name, path and commit ids are replaced; a delta unit appends the
base->head diff (<= 40 lines). C/C++ and other brace languages without a
repo-facts declaration pattern use a brace matcher (346 c_cpp pair rows
had no excerpt without it).
learn/examples.py + `ousast learn memory build`: label + feature record +
excerpt -> `example` rows (no rationale), excerpts as content-addressed
blobs; refuses origin: user and sources outside sources.toml (exit 2);
conditional labels skipped; exit 2 when >10% of a source's recorded
candidates have no excerpt. A fixed side that was read but no longer
declares the labelled function is counted apart (absent_fixed_side): a
label defect, not an unread clone.
plane/memory.py: `example` in KINDS; put_blob/get_blob/blob_names on the
MemoryStore base, so FileStore and MinioStore share them (tested on both,
MinIO through the fake object client).
Co-Authored-By: Claude Opus 5.5 <[email protected]>
Claude-Session: https://claude.ai/code/session_01EmM1j46qgKMh3zqD1QMwEo
