fix: exclude og-image from global route rule with enabled isr

[alexdln]

What

Currently, uncached images often return an error (followed by an additional redirect). Because of this, even if a preview is returned, it doesn't contain a valid image.

How

The problem is known and common, but the author of og-image writes that the only way to solve it is to manually define all the routes. However, it was enough to simply explicitly override exact rule that were defined under the global rule

Test

Open the path /og-image/image/package/{PACKAGE_NAME}/og.png

It should wait for the image to be generated (for comparison, you can go to production for unpopular packages)

Closes #960

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[codecov]

Codecov Report

✅ All modified and coverable lines are covered by tests.
✅ All tests successful. No failed tests found.

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[coderabbitai]

📝 Walkthrough

Walkthrough

Adds a new Nuxt route rule for the og image endpoint (/__og-image__/**) setting isr to getISRConfig(60) (no fallback), while retaining the existing /** route rule with isr: getISRConfig(60, true) (with fallback). No other route rules or exported/public entity signatures were changed.

🚥 Pre-merge checks | ✅ 1

✅ Passed checks (1 passed)

Check name	Status	Explanation
Description check	✅ Passed	The PR description clearly explains the problem (uncached images returning errors), the solution (explicitly overriding route rules for og-image), and provides testing instructions.

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✨ Finishing touches

🧪 Generate unit tests (beta)

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• Post copyable unit tests in a comment

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[coderabbitai]

Actionable comments posted: 0

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⚠️ Outside diff range comments (1)

nuxt.config.ts (1)

86-91: ⚠️ Potential issue | 🟡 Minor

Restructure routeRules to avoid wildcard cache precedence issue.

Nitro's route matching engine (radix3/rou3) allows multiple rules to match a single request. Setting isr: false on '/__og-image__/**' does not reliably override the catch-all '/**' ISR rule due to a known Nitro limitation (nitrojs/nitro#1751). OG-image routes may still receive ISR caching from the wildcard rule, causing cache issues.

Restructure to avoid wildcard cache rules: instead of '/**': { isr: getISRConfig(60, true) }, apply ISR explicitly to specific paths that need it ('/', '/opensearch.xml', '/api/**', etc.) and keep OG-image routes explicitly uncached.