Summary

• add a shared Service/API Baseline for built open-* and iapp-* services
• link the baseline from the @hasna/contracts README
• map the baseline to SVC-01 through SVC-10 and first adoption waves

Validation

• bun install --frozen-lockfile
• bun run typecheck
• bun test
• bun run build
• staged secrets scan: todos redaction scan --file /tmp/open-contracts-service-baseline-staged.diff

Task: 2cd0245b-20a2-4d04-a41e-fe2314323f89