Target-size compression had only a coarse DPI lever, so it undershot badly (a 350KB target could land at 216KB) and silently missed unreachable targets. Adds JPEG quality as a second lever (forced re-encode so it bites on JPEG scans), folds both into one monotonic quality axis that target-size binary-searches, reports targetMet honestly in the panel across 21 locales, and flips the tool to async for the extra passes. Quality-mode output sizes shift intentionally (slider now drives JPEG quality at full resolution in its top half).
#276's overhauled integration tests + QA sweep scripts hit the old
sectionless /api/v1/tools/<id> routes, which 404 after #280 made routes
section-prefixed. Ran scripts/rewrite-tool-paths.ts for literal URLs and
converted dynamic /api/v1/tools/${id} constructions to apiToolPath().
Negative-test paths (nonexistent/fake tools) intentionally left raw.
- fixture-integrity: probe media via media-engine probeMedia (resolves the
bundled static ffmpeg) instead of bare system ffprobe, which is ENOENT in CI;
gate on ffmpegAvailable() like the other media tests
- a11y: regenerate a11y-baseline.json to include the mobile device keys (the
baseline only had desktop keys, so the mobile a11y scan saw them as new)
- device-visual: tag @visual and exclude it from the PR mobile-smoke gate
(darwin-only screenshots cannot pass on linux; nightly + update-visual-baselines
still run it to seed linux goldens)
