docs(openspec): archive gateway input feedback contract

openspec/changes/archive/2026-07-29-phase3c-apollo-input-feedback/tasks.md

@@ -14,16 +14,16 @@
 
 - [x] 2.1 Run Protocol validation and the Go, Rust, and Swift conformance
   consumers against the new fixtures.
-- [ ] 2.2 Advance the Data Plane to the final immutable Protocol revision and
+- [x] 2.2 Advance the Data Plane to the final immutable Protocol revision and
   translate only the typed envelopes to provider control packets.
 - [x] 2.3 Add deterministic host-feedback forwarding and input-release tests
   without provider endpoint or credential disclosure.
-- [ ] 2.4 Advance the Data Plane and Connection Server to the final clipboard
+- [x] 2.4 Advance the Data Plane and Connection Server to the final clipboard
   contract and prove disabled direction, malformed/oversized text, rate, loop,
   and file/binary rejection against the authenticated provider path.
 
 ## 3. Freeze
 
-- [ ] 3.1 Reconcile the canonical specification, OpenSpec tasks, source
+- [x] 3.1 Reconcile the canonical specification, OpenSpec tasks, source
   provenance, and consumer fixture digest before creating a new immutable
   Protocol release candidate.