Correct OCR dedup workflow attribution and publish the missing configuration timeline

[acoliver]

Problem

The published OCR duplicate analysis attributes Luther's post-PR-130 reduction in repeated comments to a successful-path same-head prefilter. Current Luther source does not execute that lookup before a successful batch:

• the lookup helper is defined in .github/workflows/ocr-pr-review.yml;
• the normal path posts the raw inline candidate list;
• the prior-comment lookup is invoked only after batch failure, before fallback posting.

Code and Jefe do run the prior-comment lookup before batch posting. Luther PR 130 primarily added provider concurrency, fail-closed redaction, safer notification behavior, and tracking-issue convergence. The observed reduction in long-interval reposts may be real, but the study cannot presently attribute it to a successful-path prefilter.

The configuration/workflow timeline referenced during the analysis is also absent from the public package, preventing reproducible intervention attribution.

Desired correction

• Publish an immutable intervention timeline with repository, workflow path, commit, PR, effective timestamp, acquisition SHA, and exact control behavior.
• Distinguish per-PR cancellation, successful-path prior-comment filtering, fallback-only filtering, sticky-summary deduplication, and infrastructure tracking-issue deduplication.
• Re-run or relabel the Luther before/after mechanism analysis.
• Remove causal wording unsupported by the source while preserving the observed metrics and correction history.
• Add direct source/commit links for every attributed workflow intervention.
• Preserve the small post-change cohort and mutable-comment limitations prominently.
• Rebuild the Markdown, PDF, evidence ZIP, inventories, and checksums after the correction.

Non-goals

• This issue does not claim that the observed reduction from 18 long-interval reposts to zero is false.
• It does not change repository workflows or rank providers.
• It should not silently overwrite the original result without a documented correction note.

Related implementation work

• Luther duplicate handling remains tracked by Avoid duplicate OCR comments for already-resolved findings vybestack/llxprt-luther#115
• Upstream stable finding identity is tracked by Add stable finding fingerprints and semantic clustering alibaba/open-code-review#369