perf: lazy-load PDF reader in DocumentViewer

[BigSimmo]

Summary

• Lazy-load the PDF reader inside DocumentViewer so the PDF stack is not in the initial clinical document bundle.
• Recreates closed perf: lazy load document PDF reader #775 / original perf: lazy-load PDF reader in DocumentViewer #750 with PR-policy-compliant metadata.

Verification

• Hosted Static PR checks / Build / Unit coverage / Production UI / Advisory UI on predecessor heads.
• npm run verify:ui evidence via hosted Production UI.
• UI verification not run locally in this babysit pass: relying on hosted Production UI.

Risk and rollout

• Risk: low; code-splitting only; document viewing behavior unchanged once loaded.
• Rollback: revert this PR to restore eager PDF reader import.
• 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 Clinical KB Database (sjrfecxgysukkwxsowpy)
• 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• Source metadata, review status, and outdated/unknown-source behavior remain conservative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

  

[supabase]

This pull request has been ignored for the connected project sjrfecxgysukkwxsowpy because there are no changes detected in supabase directory. You can change this behaviour in Project Integrations Settings ↗︎.

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Review details

⚙️ Run configuration

Configuration used: Path: .coderabbit.yaml

Review profile: CHILL

Plan: Pro Plus

Run ID: e788d98f-cf72-486b-80ff-e642e24e00d9

📥 Commits

Reviewing files that changed from the base of the PR and between 3ff8095 and 7ce9b6d.

📒 Files selected for processing (2)

• src/components/DocumentViewer.tsx
• tests/document-viewer-pdf-reader-lazy.test.ts

✨ Finishing Touches

🧪 Generate unit tests (beta)

• Create PR with unit tests
• Commit unit tests in branch cursor/lazy-pdf-reader-db17

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[github-actions]

CI triage

CI failed on this PR. Automated classification of the 2 failed job(s):

• Production UI — needs investigation: inspect the failing step and uploaded diagnostics; rerun only after classifying the cause.
• PR required — needs investigation: inspect the failing step and uploaded diagnostics; rerun only after classifying the cause.

Compared with main CI run #3089 (success).

Classification is evidence routing, not permission to ignore a failure. Exact quarantined Playwright identities remain governed by the flake ledger.