Capabilities — admit one typed non-model service #42

Planning representation replaced — 6 November 2026. The accepted Typed services and extension authoring outcome is retained in #62. Reopen one bounded task when selected. This closure does not mean the capability is complete or cancelled. The original scope and evidence below remain preserved; current selected work starts at #52.

Make one service discoverable and callable without pretending it is a chat model.

Starting point: Current delivery: general interface/profile declarations and call/job/session grants remain designed.

First working slice

• Define one exact interface/profile, typed demand and Rune contribution; preserve the existing model path as explicit compatibility.
• Register one bounded CallGrant driver with fresh capability observations, admission checks and lease cleanup; expose only its typed operation.
• Verify incompatible demand, unknown/stale readiness, unauthorized use and cancellation fail cleanly; record one controlled end-to-end service call.

Connections: Extends #1/#7/#21 and shares readiness with #6. #22 owns durable job attempts; domain providers still authorize their own effects.

Later: #51 owns the first crawl provider's JobGrant registration/driver extension, backed by #22's durable attempts. SessionGrant, additional domains and broader placement remain separate follow-ups.

References: ADR 22 · ADR 14.

First modality consumers: #48 Echo and #49 Vision; #50 verifies their shared runtime handoffs before #16/#17 resource and ranking policies.

Contribution entry: Contribute one exact service interface and controlled CallGrant driver.
Open decision: Use #48's bounded local transcription path as the candidate first non-model service consumer. Agree its exact interface/profile, typed input/output, cancellation and Rune contribution with #21/#48 before implementing the driver. Reuse the agreed profile in #50. Runtime/version and media limits remain explicit decisions; broader grant families remain follow-ups.
Verification: Demand/admission/cancellation fixtures and one bounded service call. Shared contribution and touched-docs rules: #52.