feat(backend): add operational smoke tooling and safe pricing cleanup endpoints

- add backend README and refresh API map and smoke regression docs
- add full backend smoke regression script
- add admin pricing cleanup preview and dry-run endpoints
- add helper script for test pricing cleanup
- verify typed error contracts, draft flow, publish readiness and preview flows
- verify publish preview retention and clean backend startup behavior
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greebo
2026-03-19 22:54:12 +03:00
parent 127c5bff71
commit 0f9c2a1cbd
16 changed files with 551 additions and 235 deletions

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