docs(openspec): archive phase3c gateway contracts

2026-07-30 07:38:39 +07:00
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+## Why
+
+Provider work identifies an immutable stream-policy version but omits the effective settings, allowing a gateway to launch Apollo with unrelated hard-coded media parameters.
+
+## What Changes
+
+- Add the effective resolution, frame rate, codec, selected bitrate, and audio policy to authenticated provider work.
+- Represent decode support as an ordered set of registered profiles and generate one canonical intersection operation for consumers.
+- Require generated Go, Rust, and Swift bindings to validate the same bounded stream-policy contract.
+- Keep the new contract unpublished until a new immutable Protocol version is separately authorized.
+
+## Capabilities
+
+### New Capabilities
+
+- `provider-stream-policy`: Authenticated provider work carries the exact effective stream policy consumed by the provider launch, and registered peers negotiate that policy through the shared ordered profile intersection.
+
+### Modified Capabilities
+
+None.
+
+## Impact
+
+The control-v1 schema, generated bindings, conformance fixtures, and downstream Server and Data Plane consumers require coordinated local updates. RC6 remains immutable and unchanged.