refactor(operator)!: adopt PaymentRails; delete the tuner-app secret bypass#14
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…bypass
Greenfield cleanup, no shims.
- **Delete the tuner-app shared-secret bypass.** The `x-tuner-app-secret`
header + `tuner_app_shared_secret` config let any caller with the secret skip
ALL billing and serve free — a leak-prone bearer secret and scope-creep from a
tuner-agent effort. Billing now applies to every caller; access control is the
payment rails, not a shared secret. (The two `if !trusted_app_call` guards
become plain scopes; the intricate shielded validate/ceiling/nonce/settle logic
is byte-identical.)
- **Adopt `PaymentRails`** (replaces `PaymentMode`): config takes
`payment_rails = { shielded, direct }`; the operator's provider is the
`PaymentRouter` built from the enabled set.
Pinned to tangle-inference-core rev 4476f07 (feat/payment-rails). server_tests
26/26 green.
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✅ Auto-approved PR — a254e094
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The full PR reviewer audit still runs separately and will publish findings if it detects issues.
tangletools · auto-approval · reason: blanket_auto_approve · 2026-06-11T20:59:16Z
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Greenfield cleanup, no shims.
Delete the tuner-app shared-secret bypass
The
x-tuner-app-secretheader +tuner_app_shared_secretconfig let any caller holding the secret skip all billing and serve free — a leak-prone bearer secret and scope-creep from a tuner-agent effort. Billing now applies to every caller; access control is the payment rails, not a shared secret. The twoif !trusted_app_callguards become plain scopes — the intricate shielded validate/ceiling/nonce/settle logic is byte-identical.Adopt
PaymentRailsConfig takes
payment_rails = { shielded, direct }; the operator's provider is thePaymentRouterbuilt from the enabled set (replacesPaymentMode).Dependency
Pinned to
tangle-inference-corerev4476f07(PR tangle-network/tangle-inference-core#2). Repoint tobranch="master"after that merges.Tests
server_tests26/26 green.