scraper: update VirtualRealPorn for the new site

[DarXV05]

Builds on #2233 by @ShadowOps, which covers the selector migration. Credited via Co-authored-by.

Problem

The site moved to Laravel Livewire and every selector the scraper used is gone. Checked against a live scene page:

selector	matches
script#virtualreal_video-streaming-js-extra (scene ID)	0
script#virtualreal_download-links-js-extra (filenames)	0
div.metaSingleData a span (tags)	0
figure[itemprop="associatedMedia"] a (gallery)	0

Scene ID comes from the first, and the scraper ends with if sc.SceneID != "" { out <- sc } — so it emits nothing and returns no error. Silent failure.

Additional fixes beyond #2233

Found while verifying that PR against the live site:

Performer names carry a " VR" suffix on the new site. Stored verbatim, they create a second actor record alongside the existing one. Stripped.

Trailers resolve zero sources. The PR keeps TrailerType: "scrape_json" pointed at trailer.contentUrl in the JSON-LD, but the VideoObject no longer has a trailer key at all — its keys are @context, @type, actor, description, duration, genre, interactionStatistic, name, thumbnailUrl, uploadDate, url. The stream sources are on the player element instead, which is the shape badoink.go already handles: scrape_html over dl8-video source. Verified to return 5 sources with quality labels.

Covers silently rejected in some builds. image.Decode validates covers, but pkg/scrape registers no image format decoder. It works in the shipped binary only because pkg/server/heatmapproxy.go happens to import image/jpeg — nothing in pkg/scrape guarantees it, and a build excluding pkg/server rejects every cover. Registers gif/jpeg/png explicitly.

Verification

Single-scene scrape against the live site:

scene_id   virtualrealporn-<id>    duration  42 min
title      <ok>                    released  2026-02-13
cast       2 (suffix stripped)     tags      8
covers     1                       filenames 25
gallery    7                       trailer   scrape_html / dl8-video source

Listing pagination also verified: /videos/?page=1 yields 20 scene links via a.data-title.