fix: harden Vertex auth and regional endpoints - #118

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byapparov wants to merge 3 commits into

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backport/provider-hardening

Commits on Sep 14, 2026

fix(provider): harden Vertex endpoint and auth handling
byapparov
committed
c72803a
test(provider): scope Vertex auth spies to each test
byapparov
committed
f49d141
fix(provider): validate Vertex locations and reuse auth state
byapparov
committed
baf4368