Add OpenGraph images and SEO meta tags to plugin pages

[simonhamp]

Summary

Plugin listing pages had no per-plugin <title> or OpenGraph/Twitter tags, so social shares fell back to the generic site card. This adds proper SEO metadata and a generated OG image for every plugin, mirroring how blog posts already work.

What changed

• SEO meta on plugin pages — PluginDirectoryController now sets the title, description, and OpenGraph/Twitter tags on both the plugin show and license pages (following the existing ShowBlogController pattern).
• Generated OG images via TheOg — a queued GeneratePluginOgImage job renders an image to the public disk and stores its URL on a new plugins.og_image column. It's dispatched from PluginSyncService::sync() (the single content pipeline — webhooks, the customer create flow, and the SyncPlugin job) and from Filament EditPlugin::afterSave(), so images stay fresh. The OgImageService was refactored to share its rendering between articles and plugins; the article path is unchanged.
• Plugin detail "pills" — PluginOgLayout renders the plugin version, required nativephp/mobile constraint, and iOS/Android minimum versions (shown with a +, e.g. iOS 18.2+) as rounded pill badges. Intervention has no rounded-rectangle primitive, so PillBox composes a stadium shape from a rectangle + a circle at each end.
• Backfill command — php artisan plugins:generate-og-images [--missing] generates images synchronously for existing plugins (no queue worker required).
• Cleanup — deleting a plugin removes its generated OG image.

Why

Shared plugin links (Slack, X, etc.) now show a branded, per-plugin card with the plugin's name, description, and platform/version support instead of a generic fallback.

Testing

• New PluginShowSeoMetaTest (title + OG/Twitter meta, generated-image usage, default fallback, license page).
• New PluginOgImageTest (job renders + stores the image, sync dispatches the job, delete cleanup, pill label composition incl. the + minimum behavior, backfill command).
• PluginSyncServiceTest updated to fake the queue so it stays a focused unit test.

Note

Existing plugins won't have an image until their next sync/edit or a run of plugins:generate-og-images. Generation is queued, so a worker (Horizon) must be processing the queue.

🤖 Generated with Claude Code