redesign(documents): document-first viewer with sticky evidence rail

docs/branch-review-ledger.md

@@ -41,3 +41,4 @@ Use this ledger to prevent repeated branch and PR reviews when the reviewed HEAD
 | 2026-07-11 | PR #469 / claude/response-formatting-cleanup-b57a9c | f1864308e0b287bb83b2a13daca4c3aa2ab95a3e | open-PR review, unresolved comments, and CI | P2 fixed: the OCR bullet sanitizer now preserves line-start O blood values when followed by blood or red-cell noun tails while still stripping non-blood bullets such as `o Negative screen`. No additional high-confidence defect was found in the nine-file diff.                                                                                                                                                                                                                                                                                                                                                                                                | Focused sanitizer/extractive Vitest (75/75); TypeScript; focused Prettier; `git diff --check`. Production-readiness script ran fail-closed with provider variables cleared and reported only expected missing provider configuration.                                                                                              |
 | 2026-07-11 | PR #466 / claude/search-timeout-failure-s6aiuj      | 54d52292eeb9e1c7856b3dad89d1b72e0d49fd53 | open-PR review, unresolved comments, and CI | P2 fixed: SSE progress/token/error emission now tolerates a client cancellation racing an enqueue, so the catch path cannot throw while reporting the original stream error. No additional high-confidence defect was found in the six-file diff.                                                                                                                                                                                                                                                                                                                                                                                                                  | Focused SSE and search utility Vitest (13/13); TypeScript; focused Prettier. Hosted advisory browser failure was shared stale assertion drift and is rerun after this push.                                                                                                                                                        |
 | 2026-07-11 | PR #483 / claude/differentials-page-review-a3daaf   | 36cca1bf7c13718dcc60a61b75272c7c4fa5cd44 | open-PR review, unresolved comments, and CI | P2 fixed: authenticated diagnosis detail responses now derive related links, overlap links, and comparison presentation from the owner's current diagnosis and presentation rows rather than the bundled snapshot. Added an owner-only catalog regression test. No additional high-confidence defect was found in the changed scope.                                                                                                                                                                                                                                                                                                                               | Focused differentials route/catalog Vitest (26/26); TypeScript; focused Prettier; `git diff --check`. Production readiness ran fail-closed with provider variables cleared and reported only expected missing provider configuration.                                                                                              |
+| 2026-07-11 | PR #489 / claude/document-viewer-redesign-55b68b    | 9130c8b15a22dbbc965464a247ae930c04f2da62 | open-PR review, unresolved comments, and CI | P2 fixed: document deep links now expand the mobile indexed-text details and scroll the branch-specific visible mobile or desktop chunk instead of the first duplicated DOM match. Added focused desktop/mobile assertions. No additional high-confidence defect was found in the three-file diff.                                                                                                                                                                                                                                                                                                                                                                 | Focused Prettier; TypeScript; `git diff --check`. Browser proof delegated to hosted CI because Turbopack rejects the isolated worktree's external node_modules junction.                                                                                                                                                           |