Architecture topicValidation

Validation-first fixes

A diff is not enough until the issue is reproduced and checked

FixBugs treats validation as part of the product, not a cleanup step. The workflow aims to connect the bug, the hypothesis, the proposed change, and the verification output before asking a human to merge.

validated fixesreproduction testdiff reviewAI debugging validation

Core insight

A generated patch can look plausible and still be wrong. Validation-first means the analysis and verification have to survive review before the patch becomes a merge candidate.

Validation path

StepQuestion answeredReviewer signal
ReproduceCan the workflow show the failure mode clearly enough?Failing test, trace, log pattern, or documented reproduction path.
PlanDoes the proposed change target the selected hypothesis?Affected files, rationale, and scoped task list.
Generate diffIs the implementation reviewable and limited to the intended fix?Hunk-level diff and explanation.
ValidateDoes the fix resolve the reproduced issue without obvious regression?Passing reproduction, test output, or verification note.
Escalate uncertaintyIs the context too thin to claim a fix?A clear note asking for review or more context.

Product screenshots

Fix plan: review the intended work before code changes.
Diff: inspect code changes at the hunk level.
Fix output: review the final artifact and validation context.

When context is thin

A validation-first workflow should not pretend every bug can be solved automatically. If the input is incomplete, the environment cannot reproduce the issue, or the context points to multiple plausible causes, FixBugs should surface the uncertainty.

That is still useful. A clear no-fix result with ranked hypotheses and cited context is better than a confident patch that solves the wrong problem.

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Start with the workflow surface your team already uses, then use this architecture resource for the technical review.