fix(app): guard modulepreload relList.supports for CEF

[M3gA-Mind]

Summary

• add a Vite post-render plugin that rewrites Vite's injected relList.supports(\"modulepreload\") check to require typeof relList.supports === \"function\"
• disable Vite module preload helper emission with build.modulePreload = false so both modulepreload and dynamic-import preload paths avoid the non-callable relList.supports crash
• keep this CEF-specific hardening in build config so React can mount reliably instead of failing with a blank desktop window

Test plan

• pnpm lint
• pnpm typecheck
• desktop app launches in CEF without blank white screen regression

Made with Cursor

Summary by CodeRabbit

• Bug Fixes
  • Resolved runtime compatibility issues in the Desktop CEF environment by improving handling of module preload checks.

[coderabbitai]

No actionable comments were generated in the recent review. 🎉

ℹ️ Recent review info

⚙️ Run configuration

Configuration used: defaults

Review profile: CHILL

Plan: Pro

Run ID: b9b09e5f-63dd-4036-9551-ae97ae55aadc

📥 Commits

Reviewing files that changed from the base of the PR and between 8a0ed8a and d210433.

📒 Files selected for processing (1)

• app/vite.config.ts

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📝 Walkthrough

Walkthrough

Updates the Desktop CEF runtime workaround in Vite configuration by disabling modulepreload and adding a post-build plugin that guards relList.supports calls with type checking to prevent runtime failures.

Changes

Cohort / File(s)	Summary
Vite Configuration CEF Workaround app/vite.config.ts	Disables build.modulePreload entirely and adds a post-build chunk transformation plugin that wraps relList.supports("modulepreload") calls with typeof relList.supports === "function" guards, preventing failures when the method exists but is not callable.

Estimated code review effort

🎯 3 (Moderate) | ⏱️ ~20 minutes

Possibly related PRs

• fix(app): avoid desktop blank screen from modulepreload polyfill #1045: Modifies the same file to address Vite's modulepreload handling for desktop/CEF environments with an alternative approach using a polyfill disable strategy.

Suggested reviewers

• senamakel

Poem

🐰 With guards now placed on relList.supports,
No crashes when the function calls deport,
Vite's modules preload? Not this day!
CEF runs safe, in every way,
Our workaround hops toward the sky! 🚀

🚥 Pre-merge checks | ✅ 4 | ❌ 1

❌ Failed checks (1 warning)

Check name	Status	Explanation	Resolution
Docstring Coverage	⚠️ Warning	Docstring coverage is 50.00% 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 title clearly and specifically summarizes the main change: guarding modulepreload relList.supports checks for CEF compatibility, which is the core objective of the PR.
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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• Create PR with unit tests

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