fix(deploy): add baseUrl for GitHub Pages and disable caching

[jbdevprimary]

Summary

Fixes two issues with the GitHub Pages staging deployment:

1. Expo app not loading - Added experiments.baseUrl: "/thumbcode" to app.json so Expo knows it's deployed under a subdirectory
2. Browser caching old content - Inject no-cache meta tags into HTML files during build

Changes

• app.json: Add experiments.baseUrl: "/thumbcode" for GitHub Pages subdirectory deployment
• .github/workflows/deploy-gh-pages.yml: Add post-build step to inject cache-control meta tags

Test Plan

• Verify staging deployment loads the Expo app (not stuck on spinner)
• Verify cache-busting works (fresh content on each deployment)

🤖 Generated with Claude Code

Summary by CodeRabbit

• Chores
  • Enhanced the deployment workflow to automatically inject no-cache headers in staging builds, ensuring users consistently receive the latest version of the application without any unintended cached content interference
  • Added a new configurable base URL parameter to application settings, enabling improved routing capabilities and flexible resource loading configuration for enhanced application functionality

_{✏️ Tip: You can customize this high-level summary in your review settings.}

[coderabbitai]

📝 Walkthrough

Walkthrough

Two configuration updates: a GitHub Actions workflow step to inject no-cache meta tags into HTML files during deployment, and a new baseUrl field added to the Expo experiments configuration.

Changes

Cohort / File(s)	Summary
GitHub Actions Workflow .github/workflows/deploy-gh-pages.yml	Added new build step "Inject no-cache headers for staging" that runs after "Build web app" step. Uses sed to inject no-cache meta tags into all HTML files under dist and reports file count.
Application Configuration app.json	Added new field "baseUrl": "/thumbcode" under "expo" -> "experiments" alongside existing "typedRoutes": true configuration.

Estimated code review effort

🎯 1 (Trivial) | ⏱️ ~3 minutes

Poem

🐰 A hop, a step, a config change,
No-cache tags now rearrange,
baseUrl hops to thumbcode's door,
Fresh pages load forevermore! ✨

🚥 Pre-merge checks | ✅ 3

✅ Passed checks (3 passed)

Check name	Status	Explanation
Description Check	✅ Passed	Check skipped - CodeRabbit’s high-level summary is enabled.
Title check	✅ Passed	The PR title accurately describes the main changes: adding baseUrl configuration for GitHub Pages and implementing cache-disabling headers.
Docstring Coverage	✅ Passed	No functions found in the changed files to evaluate docstring coverage. Skipping docstring coverage check.

_{✏️ Tip: You can configure your own custom pre-merge checks in the settings.}

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[sonarqubecloud]

Quality Gate passed

Issues
0 New issues
0 Accepted issues

Measures
0 Security Hotspots
0.0% Coverage on New Code
0.0% Duplication on New Code

See analysis details on SonarQube Cloud