[STU-176] Fix CodeRabbit nitpicks — portalIcons typing and fragile index logic

[BAWES]

Summary

• portalIcons typing: Changed from Record<string, string> to Record<(typeof portalRoles)[number], string> so indexed access (portalIcons[role]) is fully type-checked — no implicit undefined.
• Fragile index logic: Replaced index === 1 ? "PDF" : "Live" with explicit {label, status} objects so reordering the array cannot silently break rendering.

Verification

• npx tsc --noEmit passes with zero errors
• Pre-commit hooks (lint-staged, eslint) all pass

Notes

• Originally targeted STU-154 branch (PR [STU-154] Landing page UX overhaul — copy, icons, and benefits section #36), but that branch has already been merged and deleted from origin. Targeting main instead.
• The original branch feature/STU-154-landing-ux-improvements implicitly got these fixes when merging main ahead; this PR applies them cleanly to main.

🤖 Generated with Claude Code

Summary by CodeRabbit

• Refactor
  • Improved code organization and type consistency for role and status handling in the landing page.
  • Enhanced how portal roles are managed throughout the interface for better maintainability.

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ℹ️ Recent review info

⚙️ Run configuration

Configuration used: Path: .coderabbit.yaml

Review profile: CHILL

Plan: Pro Plus

Run ID: 2a15a55b-d004-4522-be3e-0358d09b837e

📥 Commits

Reviewing files that changed from the base of the PR and between ab0895d and 10e18fa.

📒 Files selected for processing (1)

• src/app/page.tsx

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Walkthrough

The landing page improves type safety and clarity: portalIcons keys are now constrained to the portalRoles union, and the operations columns rendering refactors from index-based string logic to an explicit array of {label, status} objects mapped directly.

Changes

Landing page role and status typing refinement

Layer / File(s)	Summary
Role typing and operations rendering src/app/page.tsx	portalIcons key type is tightened from generic Record<string, string> to Record<(typeof portalRoles)[number], string>. Operations columns refactor from a string array with index-based status selection to an array of objects with explicit label and status properties, rendering the status directly.

Estimated code review effort

🎯 3 (Moderate) | ⏱️ ~20 minutes

Possibly related PRs

• BAWES/studenthub-codex#36: Both PRs modify src/app/page.tsx's landing-page data and the portalIcons role-to-icon mapping, so the type constraint and portal icon changes are directly connected.

🚥 Pre-merge checks | ✅ 3 | ❌ 2

❌ Failed checks (1 warning, 1 inconclusive)

Check name	Status	Explanation	Resolution
Docstring Coverage	⚠️ Warning	Docstring coverage is 0.00% which is insufficient. The required threshold is 80.00%.	Write docstrings for the functions missing them to satisfy the coverage threshold.
Description check	❓ Inconclusive	The description covers the main changes with clear explanations but lacks complete checklist items, test plan details, and clear type classification.	Complete the Type checklist by selecting the appropriate category (appears to be Refactor), add a detailed Test Plan section with specific steps, and ensure all verification items in the checklist are explicitly marked.

✅ Passed checks (3 passed)

Check name	Status	Explanation
Title check	✅ Passed	The title clearly identifies the main changes: fixing CodeRabbit nitpicks related to portalIcons typing and fragile index logic, with a specific ticket reference [STU-176].
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.

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✨ Finishing Touches

📝 Generate docstrings

• Create stacked PR
• Commit on current branch

🧪 Generate unit tests (beta)

• Create PR with unit tests
• Commit unit tests in branch fix/STU-176-coderabbit-nitpicks-v2

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[BAWES]

Staff Engineer Review — APPROVE (comment-only, own PR)

Clean, targeted fix. Both changes improve correctness with minimal diff.

What's good

• portalIcons typing: Record<(typeof portalRoles)[number], string> makes indexed access fully type-checked — no implicit undefined on portalIcons[role]. Exactly the right fix.
• Index logic: Replacing index === 1 ? "PDF" : "Live" with explicit {label, status} objects eliminates a silent rendering bug waiting to happen if the array is ever reordered.

Merge order note

PR #41 (Tailwind redesign) touches the same sections of src/app/page.tsx. #39 should merge first — it's small (+10/-5) and uncontroversial. After #39 lands, #41 will need a rebase to carry forward the {label, status} pattern into the Tailwind version.

Verification

• CI: all green ✓
• Branch naming: fix/STU-176-* ✓
• Commit: conventional ✓