Use canonical webhook URLs and disable voicemail detection in CI

[dimavrem22]

Executive Summary

• Registers A2A and iMessage subscriptions on the canonical webhook URL.
• Disables voicemail detection for every CI voice call.

Description

Gateway startup now keeps same-URL identity subscriptions separate by event family, and A2A setup uses the plain webhook URL. The outbound call tool accepts voicemailDetection, live CI requests disabled detection, and the minimum Inkbox SDK version is 0.5.8.

Related PRs:

• Use canonical webhook URLs and disable voicemail detection in CI hermes-agent-plugin#88
• Use canonical webhook URLs and disable voicemail detection in CI claude-code-plugin#51
• Use canonical webhook URLs and disable voicemail detection in CI codex-plugin#34
• Use canonical webhook URLs and disable voicemail detection in CI openclaw-plugin#51
• Use canonical webhook URLs and disable voicemail detection in CI #15

Reason

The query parameter is not used for webhook routing. CI calls also need voicemail detection disabled so the voice driver is not classified as an answering service.

Decisions

• Keep webhook setup at gateway startup.
• Use event families to distinguish subscriptions that share the canonical URL.
• Limit disabled voicemail detection to CI voice scenarios; normal calls retain the SDK default.

Testing

• npm run lint
• npm run typecheck
• npm test
• npm run build