fix: Add getAppConfig as an alias to useAppConfig

[Arktomson]

Overview

useAppConfig is not a hook — it's a plain synchronous function that returns the app config object. The use prefix is misleading, especially for React users where use* conventionally implies a hook with re-rendering behavior.

This PR renames it to getAppConfig to better reflect its nature as a simple getter. The original useAppConfig is kept as a backward-compatible alias that delegates to getAppConfig, so existing code continues to work without changes.

Changes include:

• Add getAppConfig as the primary function in wxt/utils/app-config, with useAppConfig calling it internally
• Register getAppConfig as an auto-import alongside useAppConfig
• Update all docs and internal usages to prefer getAppConfig
• Update e2e test snapshots for auto-imports

Manual Testing

1. In any WXT project, use getAppConfig() — verify it is auto-imported and returns the app config
2. Verify useAppConfig() still works as before (backward compatibility)
3. Run pnpm test and pnpm build to confirm all tests and builds pass

Related Issue

This PR closes #1911

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[aklinker1]

Nice, thanks for the PR. I added some missing JSDoc to the useAppConfig and getAppConfig functions, I didn't realize they didn't have any docs.

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commit: b07aff5

[codecov]

Codecov Report

❌ Patch coverage is 0% with 3 lines in your changes missing coverage. Please review.
✅ Project coverage is 75.97%. Comparing base (395c584) to head (b07aff5).
⚠️ Report is 1 commits behind head on main.

Files with missing lines	Patch %	Lines
packages/wxt/src/utils/app-config.ts	0.00%	3 Missing ⚠️

Additional details and impacted files

@@            Coverage Diff             @@
##             main    #2144      +/-   ##
==========================================
- Coverage   76.28%   75.97%   -0.32%     
==========================================
  Files         113      113              
  Lines        3045     3047       +2     
  Branches      683      683              
==========================================
- Hits         2323     2315       -8     
- Misses        637      646       +9     
- Partials       85       86       +1     

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[github-actions]

Thanks for helping make WXT better!