Hotfix: declare @opentelemetry/api as SDK direct dep
packages/sdk/src/session-proxy.ts hard-imports @opentelemetry/api (added in v0.1.33 alongside SigNoz observability), but the package was missing from packages/sdk/package.json dependencies. Standalone installs of pilotswarm-sdk@0.1.33 or 0.1.34 crashed on first import with ERR_MODULE_NOT_FOUND.
Adds @opentelemetry/api ^1.9.0 as a direct dependency. No behavior change.
Surfaced during Waldemort v0.1.34 dep bump.
See PR #44.