docs: implementation plan (TTY precedents folded in); task decomposition (17 tasks)

Plan updated with the alknet-tty findings: the drainer pattern
(single ordered writer) makes outbound chunk-boundary parsing sound;
TestStdinSink's try_send→Full→Pending is the inbound backpressure
precedent; OQ-01(a) now cites the reference.

Task graph (taskgraph-validated, 17 tasks, 6 generations, no cycles):
- tasks/server/: core-types, auth, healthz-decoy, adapter
- tasks/gateway/: dispatch, routes, publish
- tasks/websocket/: byte-adapter (research POC), upgrade-session, overlay-ops
- tasks/adapters/: from-openapi, from-jsonschema, to-openapi, from-wss, mcp
- tasks/client/: http-host
- tasks/infra/: integration-suite (phase 4)

Critical path runs through server core → adapter → WS session →
overlay tests → integration suite. High-risk tasks are the three WS
tasks, de-risked by the ws-byte-adapter POC blocking upgrade-session.

tasks/adapters/from-jsonschema.md

@@ -0,0 +1,42 @@
+---
+id: adapter-from-jsonschema
+name: from_jsonschema single-endpoint adapter
+status: pending
+depends_on: [client-http-host]
+scope: narrow
+risk: low
+impact: component
+level: implementation
+tags: [adapters, phase-3]
+---
+
+## Description
+
+Port `adapters/from_jsonschema.rs` from
+`/workspace/@alkdev/alknet/crates/alknet-http/src/adapters/from_jsonschema.rs`
+per ADR-066: caller supplies OperationSpec + HttpServiceConfig + path
+template + method; one HandlerRegistration with a reqwest forwarding
+handler (same shape as from_openapi's), FromJsonSchema provenance
+(leaf, Internal default). Sub op type → StreamingHandler expecting
+text/event-stream. Shares the forwarding-handler code path with
+from_openapi.
+
+## Acceptance Criteria
+
+- [ ] Adapter ported; one registration per call, correct provenance
+- [ ] Forwarding round-trip test against a local mock server
+- [ ] `cargo test` passes
+
+## References
+
+- docs/architecture/decisions/066-from-jsonschema-as-http-adapter.md
+- docs/architecture/http-adapters.md (§from_jsonschema)
+- alkcall ADR-027 (FromJsonSchema provenance)
+
+## Notes
+
+> Agent fills during implementation.
+
+## Summary
+
+> Agent fills on completion.