#1486 fix(cli): preserve Relayfile subscription path filters

Summary

• serialize the Relayfile inbound target filter as path_glob, matching the Relaycast server contract
• add a request-body regression test that rejects the previous camelCase field
• document the scoped-delivery fix in the changelog

Verification

• npm run typecheck
• npm exec -- vitest run packages/cli/src/cli/commands/integration-subscribe.test.ts packages/cli/src/cli/commands/relaycast-groups.test.ts (78 passed)
• focused ESLint (0 errors; existing warnings only)
• Prettier check and git diff --check

Fixes #1479