⚡ Bolt: Optimize project detail data fetch via in-memory derivation

[aicoder2009]

💡 What: The optimization eliminates a redundant backend fetch for the project's specific lists in src/app/projects/[id]/page.tsx.
🎯 Why: Previously, the application was performing an HTTP request to /api/projects/${projectId}/lists concurrently with /api/lists. Since /api/lists returns all the lists belonging to the user, a separate backend query solely for project lists is unnecessary and adds database load.
📊 Impact: Saves one full HTTP round-trip and one DynamoDB backend query per project detail page load. Reduces Time to First Byte (TTFB) and frontend network bandwidth usage.
🔬 Measurement: Inspect the Network tab in DevTools when navigating to a project detail page. You should only see concurrent calls to /api/projects/[id] and /api/lists, rather than three distinct calls. Run pnpm lint and pnpm test to verify no regressions.

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PR created automatically by Jules for task 10679654713362809369 started by @aicoder2009

Summary by CodeRabbit

Release Notes

• Refactor
  • Streamlined data fetching on project pages to reduce redundant backend requests and improve load times.

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Project	Deployment	Actions	Updated (UTC)
opencitation	Ready	Preview, Comment	Jun 5, 2026 9:05am

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ℹ️ Recent review info

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📥 Commits

Reviewing files that changed from the base of the PR and between b872925 and c98510f.

📒 Files selected for processing (2)

• .jules/bolt.md
• src/app/projects/[id]/page.tsx

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📝 Walkthrough

Walkthrough

This PR optimizes network performance by eliminating a redundant API call. The project page now fetches the global lists endpoint alongside the project endpoint (in parallel) and derives project-specific lists via in-memory filtering, removing the separate project-lists endpoint request previously used.

Changes

Network Request Optimization via Client-Side Filtering

Layer / File(s)	Summary
Fetch refactor and client-side filtering .jules/bolt.md, src/app/projects/[id]/page.tsx	fetchProjectAndLists now fetches /api/projects/:id and /api/lists concurrently instead of calling a separate project-lists endpoint. The lists state is populated by filtering allLists to match the current projectId. A journal entry documents the optimization to avoid the redundant query.

Sequence Diagram

sequenceDiagram
    participant Page as Project Page
    participant APIProj as /api/projects/:id
    participant APILists as /api/lists
    participant State as Component State
    
    rect rgba(100, 150, 100, 0.5)
    Note over Page,State: New behavior (optimized)
    par Fetch in parallel
        Page->>APIProj: fetch project
        Page->>APILists: fetch all lists
    and
        APIProj-->>Page: project data
        APILists-->>Page: all lists array
    end
    Page->>State: set allLists (full array)
    Page->>State: derive lists (filter by projectId)
    end

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Estimated code review effort

🎯 2 (Simple) | ⏱️ ~10 minutes

Poem

🐰 A hop through the network, now swift and lean,
Two requests in parallel—a beautiful scene,
Filter at client, no extra calls made,
One fewer query, the performance trade!

🚥 Pre-merge checks | ✅ 4 | ❌ 1

❌ Failed checks (1 warning)

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.

✅ Passed checks (4 passed)

Check name	Status	Explanation
Description Check	✅ Passed	Check skipped - CodeRabbit’s high-level summary is enabled.
Title check	✅ Passed	The PR title clearly describes the main optimization: removing a redundant backend query by deriving project lists in-memory instead of making a separate API call, which aligns perfectly with the changeset.
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 bolt/project-lists-frontend-cache-10679654713362809369

Warning

Tools execution failed with the following error:

Failed to run tools: 13 INTERNAL: Received RST_STREAM with code 2 (Internal server error)

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