chore(autoresearch): log iter 31

.auto/results.tsv

@@ -29,3 +29,4 @@ iteration	commit	metric	delta	status	guard	description
 28	5037097	63	0.0	discard	fail	CORDIS gate: contracts DTO must not carry TableName + removed UserDTO.TableName(). DISCARDED: my grep used -g !*_test.go and missed upload/handler/routers_test.go:669 which does db.Create(&contracts.UserDTO{}) into w_users - that suppression exists precisely to enable the cross-plugin write. Lesson: contracts-purity changes must scan test files too.
 29	2ff0cb8	63	0.0	keep	pass	CORDIS contracts purity: gate check 2.2 forbids TableName()/gorm tags in core/contracts + removed UserDTO.TableName(); upload/handler test now seeds via explicit .Table("w_users") (precedent: filesrv test). Proven twice over: gate named auth.go:33 pre-fix, and iter-28 revert broke 1 package without the test fix. Delta-0 keep under the agreed real-defect gate
 30	9ea0e2b	63	0.0	keep	pass	SECURITY (assertion-proven): FindUserByFieldRecord interpolated its column arg into WHERE with only a prose comment as guard. Pre-fix the tautology "username = '' OR 1=1 --" EXECUTED and returned a row with err=<nil> (filter bypass). Now an allow-list rejects before GetDB. Also first test in the repository pkg: tests_passed 47->48, funcs 282
+31	5193bd0	63	0.0	keep	pass	HARNESS INTEGRITY: measure.sh and checks.sh now key GOLANGCI_LINT_CACHE per checkout. The default cache is machine-wide, so entries written by a sibling worktree replayed here carrying ITS absolute paths (12 of 63 lines pointed at an outside checkout), misattributing findings and risking a stale Guard verdict. Proven count-neutral: cold and warm both 63; foreign paths now 0. Delta 0 by design, kept under the agreed real-defect gate