perf(benchmark): make the example-image A/B cache-neutral
Civitai's image CDN is a Cloudflare edge cache: the rendition redirect is stored for 48 h and the blob for 1 h, so the same URL set is about 2.3x faster on a second visit (measured 2.82 vs 6.6 req/s at concurrency 6). The harness reused one URL set across modes and repeats, so the first mode through it paid every cold miss while later modes looked faster. - Resolve each tree's exact URLs with that tree's own builder (in a subprocess, so the old and new modules cannot alias), warm them before timing, then probe a sample and record the edge hit ratio per run. - Print a per-run table and report cache_clean_runs; warn instead of silently mixing cold runs into the medians. - Pin the rendition width in the sandbox settings so the warm-up and the server agree even when the user's own settings differ. - Skip models outside folder_paths roots: their sidecars resolve alongside the model file, so the old tree cannot read them and silently processed them as failed. --any-root opts back in. - Add reverify: populate the sandbox examples tree and time a library-wide Re-process All (--force) or Download Missing (--no-force) pass in ms/model, with --global to mirror the UI's global entry. - Default the old worktree under --workdir.
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Will Miao