fix(backend): harden machine-token verification and redact debug-logged tokens #29123

Job	Run time
Check Permissions	5s
Formatting \| Dedupe \| Changeset	2m 41s
Build Packages	1m 19s
Unit Tests (**)	3m 10s
Publish with pkg-pr-new	1m 20s
Unit Tests (**)	3m 11s
Static analysis	1m 25s
Integration Tests (fastify, chrome)	2m 6s
Integration Tests (sessions, chrome)	2m 21s
Integration Tests (localhost, chrome)	2m 0s
Integration Tests (ap-flows, chrome)	2m 3s
Integration Tests (generic, chrome)	6m 31s
Integration Tests (express, chrome)	2m 9s
Integration Tests (sessions:staging, chrome)	2m 52s
Integration Tests (astro, chrome)	3m 52s
Integration Tests (nextjs, chrome, 15)	6m 45s
Integration Tests (quickstart, chrome, 16)	2m 57s
Integration Tests (handshake, chrome)	2m 39s
Integration Tests (handshake:staging, chrome)	2m 25s
Integration Tests (vue, chrome)	2m 36s
Integration Tests (billing, chrome)	3m 55s
Integration Tests (hono, chrome)	2m 16s
Integration Tests (nextjs, chrome, 16)	5m 25s
Integration Tests (cache-components, chrome, 16)	1m 51s
Integration Tests (chrome-extension, chrome)	2m 11s
Integration Tests (nuxt, chrome)	2m 42s
Integration Tests (quickstart, chrome, 15)	2m 52s
Integration Tests (machine, chrome)	5m 38s
Integration Tests (tanstack-react-start, chrome)	2m 33s
Integration Tests (react-router, chrome)	1m 39s
Integration Tests (custom, chrome)	3m 2s
	1h 28m 31s

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