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ZUGFeRD PDF/A-3 download (VER-06, CORE-05) - #10
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The verifier runs Mustang 2.26.0 (pinned, checksum-verified) as a child JVM, so its Saxon and PDF stack stay off the KoSIT classpath. /v1/zugferd/combine takes CII, re-checks it with KoSIT, renders a German PDF/A-3 visualization, embeds the same XML as ZUGFeRD 2 profile XRECHNUNG, and returns the file only if Mustang's own validation passes; the embedded XML is byte-identical. /v1/zugferd/validate exposes the Mustang check. The web app gets a ZUGFeRD button and /api/zugferd; pnpm zugferd:check runs in CI. Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>
Short-lived Mustang JVMs start with C1 only and serial GC (about 1.8x faster on one CPU), and the service runs in the gen2 execution environment. Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>
Verified gallery runs ship a ZUGFeRD file built by the same verifier path (pnpm --filter @verdict/web gallery:zugferd), so the jury path has no wait. Live uploads build on demand; 2 vCPU bring that from ~15 s to ~10 s and stay inside the free tier at demo traffic. Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>
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Follow-ups on this branch: the Mustang JVMs start with C1 + serial GC, the service runs in gen2 with 2 vCPU (live ZUGFeRD ~29 s → ~10 s), and verified gallery runs ship a prebuilt ZUGFeRD file (instant, |
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POST /v1/zugferd/combine: CII in → KoSIT re-check (422 if not ACCEPTABLE) → German PDF/A-3 visualization → embed the same XML as ZUGFeRD 2, profile XRECHNUNG → Mustang validation → PDF out. Nothing is returned unless Mustang says valid.POST /v1/zugferd/validate: Mustang check of any PDF./api/zugferd(rate-limited, CII only, 1 MB).pnpm zugferd:checkbuilds four corpus invoices and expects valid files, and expects a plain PDF to fail.Checked: four corpus invoices → valid PDF/A-3u ZUGFeRD in 3.2–4.1 s; embedded XML byte-identical to the input (extracted and compared); a plain PDF is reported invalid; broken XML gets 422; end to end through the production image's
/api/zugferd. Container memory about 700 MB.Note: the visual page is Mustang's standard rendering of the data, not the original PDF layout (the uploaded PDF is not PDF/A and may not match the corrected totals).
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