fix(telemetry): use live ingest proxy

[blove]

Summary

• point the default Node install telemetry ingest URL at the live Cacheplane website proxy
• add a regression test for the default ingest URL
• update the telemetry README and env example to match the live proxy host

Verification

• PATH="/Users/blove/.nvm/versions/node/v22.14.0/bin:$PATH" NX_DAEMON=false npx nx test telemetry --coverage --skip-nx-cache
• git diff --check
• PATH="/Users/blove/.nvm/versions/node/v22.14.0/bin:$PATH" node scripts/verify-release-versions.mjs
• PATH="/Users/blove/.nvm/versions/node/v22.14.0/bin:$PATH" NX_DAEMON=false npx nx run-many -t build --projects=chat,langgraph,ag-ui,render,a2ui,licensing,telemetry --configuration=production --skip-nx-cache
• packed all publishable package tarballs and installed them into a fresh npm project against a local ingest server; captured 7 ngaf:postinstall events with npm metadata
• live ingest smoke to https://cacheplane.ai/api/ingest returned 202 {"ok":true}

Follow-up

• npm view @ngaf/telemetry still returns E404, so the registry install smoke remains blocked until the next publish includes @ngaf/telemetry.

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Project	Deployment	Actions	Updated (UTC)
cacheplane	Ready	Preview, Comment	May 15, 2026 7:40pm