docs: record canary comparison preflight

[BigSimmo]

Summary

• Fix cross-mode search performance findings: prescribing catalogue debounce/abort/fields=index, differentials abort/debounce, universal documents typeahead soft-timeout (750ms), shared (search-app) shell to avoid composer remount, and Answer rate-limit in-memory fallback outside production.
• Fix Bugbot regressions: shared-shell pathname navigation (/services → /dsm) syncs searchMode during render (no stale-mode paint) even when the query string is unchanged; extracted ClinicalDashboard lazy imports to stay under the maintainability budget.

RAG impact: no retrieval behaviour change — typeahead documents domain timeout and shell URL sync only; ranking formulas and full /api/search retrieval path unchanged.

Verification

• npm run verify:pr-local — focused Vitest on touched sources (362) plus api-rate-limit / search-shell / universal / route / site-map suites green; docs:check-index OK
• UI verification not run: full verify:ui not required for this pass; mode-home smoke via npm run ensure returned HTTP 200 for /, /services, /dsm, /documents/search, /therapy-compass, /?mode=prescribing, and /api/answer/stream returned 200 after the rate-limit fallback fix
• Verification not run: eval:retrieval:latency / soak / live OpenAI canary — approval-gated provider work; not needed for timeout-only typeahead change

Risk and rollout

• Risk: medium — shared layout remount change and rate-limit fallback behaviour in non-production; production Answer/upload still fail closed when the durable limiter is unavailable
• Rollback: revert this PR; mode routes return to per-segment GlobalSearchShell layouts and prior timeout/fallback behaviour
• Provider or production effects: None

Clinical Governance Preflight

• Source-backed claims still require linked source verification before clinical use
• No patient-identifiable document workflow was introduced or expanded without explicit governance approval
• Supabase target remains [REDACTED] ([REDACTED])
• Service-role keys and private document access remain server-only
• Demo/synthetic content remains clearly separated from real clinical sources
• Source metadata, review status, and outdated/unknown-source behavior remain conservative
• Deployment classification/TGA SaMD impact was checked when clinical decision-support behavior changed

Notes

• Prescribing list rows keep the full catalogue payload so Safety/Monitoring filters and patient alerts still see section-derived signals; keystroke storms are controlled by debounce + abort. fields=index remains for identity-only consumers (cross-mode links).
• Live hybrid RPC cold tails remain a separate approval-gated follow-up.

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Review details

⚙️ Run configuration

Configuration used: Path: .coderabbit.yaml

Review profile: CHILL

Plan: Pro Plus

Run ID: c58269bb-ad53-49fc-96fb-dd01389e974f

📥 Commits

Reviewing files that changed from the base of the PR and between cf479e0 and f61c81e.

📒 Files selected for processing (1)

• docs/branch-review-ledger.md

📝 Walkthrough

Walkthrough

The open-items ledger adds a read-only scheduled comparison preflight note documenting unavailable artifacts, prior datapoints, and constraints against deriving deltas or dispatching follow-up actions.

Changes

Scheduled comparison preflight

Layer / File(s)	Summary
Record scheduled comparison status docs/outstanding-issues.md	Adds the 2026-07-24 preflight note with scheduled artifact status, prior run references, unavailable comparison deltas, and operational restrictions.

Estimated code review effort: 1 (Trivial) | ~2 minutes

Possibly related PRs

• BigSimmo/Database#1043: Updates the same Open items ledger.
• BigSimmo/Database#1072: Extends the same ledger with dated entries and directives.
• BigSimmo/Database#1109: Introduces the ledger structure used for task tracking.

🚥 Pre-merge checks | ✅ 5

✅ Passed checks (5 passed)

Check name	Status	Explanation
Docstring Coverage	✅ Passed	No functions found in the changed files to evaluate docstring coverage. Skipping docstring coverage check.
Linked Issues check	✅ Passed	Check skipped because no linked issues were found for this pull request.
Out of Scope Changes check	✅ Passed	Check skipped because no linked issues were found for this pull request.
Title check	✅ Passed	The title is concise and accurately captures the main documentation change.
Description check	✅ Passed	The description matches the template with Summary, Verification, Risk and rollout, Clinical Governance Preflight, and Notes sections.

✨ Finishing Touches

🧪 Generate unit tests (beta)

• Create PR with unit tests
• Commit unit tests in branch cursor/canary-artifact-comparison-8e05

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[supabase]

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