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The team needs agreement on whether that dependency and workflow are acceptable, and under what constraints relative to existing quality gates (e.g. PHPStan).",[473,493,495],{"id":494},"decision-drivers","Decision Drivers",[497,498,499,503,506,509,515],"ul",{},[500,501,502],"li",{},"Desire for stronger signal on test effectiveness beyond conventional coverage",[500,504,505],{},"Preference that new quality tools not block merges while the practice is still being proven",[500,507,508],{},"Concern about agent\u002Flocal tooling spontaneously treating Infection like a mandatory gate (similar to how agents may run PHPStan)",[500,510,511,512,514],{},"Existing local use of Infection on branches reduces adoption risk for a ",[488,513,490],{}," dependency",[500,516,517],{},"Pipeline value is expected primarily as PR feedback (comments), not as a hard fail",[473,519,521],{"id":520},"considered-options","Considered Options",[523,524,526,527,529],"h3",{"id":525},"add-infection-to-require-dev-as-informational-non-blocking","Add Infection to ",[488,528,490],{}," as informational \u002F non-blocking",[450,531,532],{},"Introduce Infection as a development dependency; optionally wire pipeline reporting that comments mutation results onto PRs; keep it out of merge-blocking gates.",[523,534,536],{"id":535},"add-infection-as-a-blocking-ci-quality-gate","Add Infection as a blocking CI quality gate",[450,538,539],{},"Require Infection (or a mutation score threshold) to pass before merge, similar to stricter static analysis expectations.",[523,541,543],{"id":542},"do-not-add-infection-keep-ad-hoc-local-use-only","Do not add Infection; keep ad-hoc local use only",[450,545,546,547,549],{},"Leave Infection out of the repo's declared ",[488,548,490],{}," and CI; individuals may continue running it privately if installed outside the project.",[473,551,553],{"id":552},"decision-outcome","Decision Outcome",[450,555,556,557,561],{},"Chosen: ",[453,558,526,559,529],{},[488,560,490],{},".",[450,563,564],{},"Justification: Team consensus supports the dependency when results stay informational. Anthony explicitly accepted the change if Infection is non-blocking (or if agents do not start running it locally in a mandatory\u002Frandom fashion akin to PHPStan). The proposed PR-comment pipeline use aligns with that informational posture.",[473,566,568],{"id":567},"consequences","Consequences",[523,570,572],{"id":571},"positive","Positive",[497,574,575,581,584],{},[500,576,577,578,580],{},"Infection becomes a shared, reproducible ",[488,579,490],{}," tool rather than a one-off local install",[500,582,583],{},"Mutation results can be surfaced on PRs without stopping delivery",[500,585,586],{},"Downstream implementers have a clear constraint: informational reporting first, not a merge gate",[523,588,590],{"id":589},"negative","Negative",[497,592,593,599,602],{},[500,594,595,596,598],{},"Adds another Composer ",[488,597,490],{}," dependency and related config\u002FCI surface area to maintain",[500,600,601],{},"Without explicit agent\u002Fdocs guidance, assistants may treat Infection like PHPStan and run it unexpectedly",[500,603,604],{},"Informational comments can be ignored, so test-quality gains depend on voluntary follow-up",[523,606,608],{"id":607},"neutral","Neutral",[497,610,611,614],{},[500,612,613],{},"Blocking mutation thresholds and mandatory local\u002Fagent runs remain out of scope until revisited",[500,615,616],{},"Exact pipeline wiring (when comments are posted, score thresholds if any, which suites are mutated) is not fixed by this thread and needs separate implementation detail",{"title":618,"searchDepth":619,"depth":619,"links":620},"",3,[621,623,624,625,631,632],{"id":475,"depth":622,"text":476},2,{"id":482,"depth":622,"text":483},{"id":494,"depth":622,"text":495},{"id":520,"depth":622,"text":521,"children":626},[627,629,630],{"id":525,"depth":619,"text":628},"Add Infection to require-dev as informational \u002F non-blocking",{"id":535,"depth":619,"text":536},{"id":542,"depth":619,"text":543},{"id":552,"depth":622,"text":553},{"id":567,"depth":622,"text":568,"children":633},[634,635,636],{"id":571,"depth":619,"text":572},{"id":589,"depth":619,"text":590},{"id":607,"depth":619,"text":608},{},"Date: 05-08-2026\nAuthor(s): Jayden Vicarey (proposal); Anthony (assent)\nSource: Slack thread","md",{},{"title":230,"description":638},"6UzI1BgBfCuwmLQY9Xn9gqXx2T-N4pkd5NsA9MV5cU8",[644,645],{"title":223,"path":219,"stem":224,"children":-1},{"title":234,"path":235,"stem":236,"children":-1},1789777548393]