Refactor Labor Hub post fetching

[cemreinanc]

Summary by CodeRabbit

• Refactor
  • Optimized internal data fetching architecture for Labor Hub by consolidating post retrieval through new helper functions.
  • Replaced hardcoded configuration values with managed constants for improved maintainability.

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ℹ️ Review info

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📥 Commits

Reviewing files that changed from the base of the PR and between b7ac1a5 and 53e1566.

📒 Files selected for processing (1)

• front_end/src/app/(main)/labor-hub/page.tsx

📝 Walkthrough

Walkthrough

This PR consolidates Labor Hub post data fetching into a centralized helper module. Direct ServerPostsApi calls across question cards, data helpers, and pages are replaced with new fetchLaborHubPost and fetchLaborHubPostsByIds functions. Hardcoded post IDs are replaced with named constants from LABOR_HUB_POST_IDS. The API signature for getPostsWithCPAnonymous is expanded to accept additional fetch parameters.

Changes

Labor Hub Data Layer Consolidation

Layer / File(s)	Summary
Foundation: Helper module and API signature front_end/src/app/(main)/labor-hub/helpers/labor_hub_posts.ts, front_end/src/services/api/posts/posts.shared.ts	Introduces labor_hub_posts.ts with exported post ID constants (LABOR_HUB_POST_IDS, LABOR_HUB_ALL_POST_IDS) and cached fetch helpers (fetchLaborHubPost, fetchLaborHubPostsByIds). Expands getPostsWithCPAnonymous signature to accept PostFetchParams.
Question card components migration front_end/src/app/(main)/labor-hub/components/question_cards/flippable_chart_timeline_card.tsx, multi_question_data.ts, question.tsx	Updates three question card modules to use the new helpers instead of direct ServerPostsApi calls. Preserves error handling and placeholder rendering when data is unavailable.
Data helper modules migration front_end/src/app/(main)/labor-hub/helpers/fetch_jobs_data.ts, fetch_key_insights_data.ts	Replaces ServerPostsApi calls with the new helpers and updates hardcoded post IDs to use LABOR_HUB_POST_IDS constants. Maintains existing data transformation and fallback logic.
Page and section components wiring front_end/src/app/(main)/labor-hub/page.tsx, sections/activity_monitor.tsx, sections/research.tsx	Replaces all hardcoded numeric post IDs with LABOR_HUB_POST_IDS constants across Wages, Family Resources, Graduates, Economy, State, Activity Monitor, and Research sections. No logic or layout changes beyond identifier substitutions.

Estimated code review effort

🎯 3 (Moderate) | ⏱️ ~25 minutes

Possibly related PRs

• Metaculus/metaculus#4478: The PR's update to PostsApi.getPostsWithCPAnonymous to support PostFetchParams aligns with prior work introducing fetch options for CP-history retrieval.

Suggested reviewers

• ncarazon
• hlbmtc

Poem

🐰 Constants now guide where the posts shall be found,
No magic numbers scattered all around!
Helpers fetch the data, cached and true,
Labor Hub's data layer—shiny and new. ✨

🚥 Pre-merge checks | ✅ 4

✅ Passed checks (4 passed)

Check name	Status	Explanation
Description Check	✅ Passed	Check skipped - CodeRabbit’s high-level summary is enabled.
Title check	✅ Passed	The title accurately describes the main change: introducing a new local helper module for Labor Hub post fetching and refactoring multiple components to use it instead of direct API calls.
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 unit tests (beta)

• Create PR with unit tests
• Commit unit tests in branch hotfix/labor-hub-cache

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[github-actions]

Cleanup: Preview Environment Removed

The preview environment for this PR has been destroyed.

Resource	Status
🌐 Preview App	Deleted
🗄️ PostgreSQL Branch	Deleted
⚡ Redis Database	Deleted
🔧 GitHub Deployments	Removed
📦 Docker Image	Retained (auto-cleanup via GHCR policies)

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Cleanup triggered by PR close at 2026-05-19T20:09:20Z