The PWA's names.test.ts imported internal/ai/harness/testdata/dedupe_cases.json, which is outside the web build context the Dockerfile's web stage copies, so tsc failed and docker build . failed. The single case file now lives at web/src/dinners/testdata/dedupe_cases.json; the harness Go test reads it from there, as TestLetterFoldsMatchPWA already reads letterFolds.json. Maestro task: 3eee9f68-2d34-4e49-8ca5-43bacfb642f0 Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>