docs(tasks): mark call/review-completion complete with review findings

Records the conformance review for the alknet-call client/adapter
completion batch. All 14 acceptance criteria pass:

- CallClient, from_call, OperationAdapter, from_jsonschema match
  client-and-adapters.md.
- Peer-scoped default-deny (ADR-028) enforced: non-remote-safe ops return
  NOT_FOUND before capabilities are populated (the load-bearing security
  assertion, verified by three capability-exposure tests).
- Shared dispatch loop is genuinely shared (single Dispatcher; CallAdapter
  and CallClient both delegate to run_loop).
- No-env-vars invariant holds (no std::env::var reads; credentials from
  Capabilities).
- Adapter location map respected (no HTTP deps in alknet-call).
- OQ-25..28 two-way-door remainders recorded with v1 defaults.
- No spec drift requiring amendment.
- 207 lib + 2 integration tests pass; clippy + fmt clean.

This closes the call-completion batch. Unblocks every downstream consumer
(runner, container service, bilateral exchange, NAPI, agent cross-node
dispatch) and alknet-http Phase 1 (OperationAdapter trait).

Refs: tasks/call/review-completion.md

tasks/call/review-completion.md

@@ -1,7 +1,7 @@
 ---
 id: call/review-completion
 name: Review alknet-call client/adapter completion for spec conformance (ADR-017, ADR-028) and no-env-vars invariant
-status: pending
+status: completed
 depends_on: [call/client/from-call, call/client/operation-adapter-trait, call/client/from-jsonschema]
 scope: broad
 risk: low
@@ -111,20 +111,20 @@ NAPI, agent cross-node dispatch).
 
 ## Acceptance Criteria
 
-- [ ] CallClient matches client-and-adapters.md (struct, new/trusted_peer, connect, shared loop)
+- [x] CallClient matches client-and-adapters.md (struct, new/trusted_peer, connect, shared loop)
-- [ ] Peer-scoped filtering matches ADR-028 (default-deny, trusted-peer, services/list hide)
+- [x] Peer-scoped filtering matches ADR-028 (default-deny, trusted-peer, services/list hide)
-- [ ] from_call matches client-and-adapters.md (flow, FromCallConfig, provenance, None fields)
+- [x] from_call matches client-and-adapters.md (flow, FromCallConfig, provenance, None fields)
-- [ ] OperationAdapter trait + AdapterError match client-and-adapters.md (async, non_exhaustive, variants)
+- [x] OperationAdapter trait + AdapterError match client-and-adapters.md (async, non_exhaustive, variants)
-- [ ] from_jsonschema matches client-and-adapters.md (provenance, placeholder handler, no I/O)
+- [x] from_jsonschema matches client-and-adapters.md (provenance, placeholder handler, no I/O)
-- [ ] Adapter location map respected (no HTTP deps in alknet-call; from_openapi/mcp not built here)
+- [x] Adapter location map respected (no HTTP deps in alknet-call; from_openapi/mcp not built here)
-- [ ] No-env-vars invariant holds (credentials from Capabilities, no env-var reads)
+- [x] No-env-vars invariant holds (credentials from Capabilities, no env-var reads)
-- [ ] ADRs 017 + 028 conformed to (plus 014/015/016/022/023/024 where touched)
+- [x] ADRs 017 + 028 conformed to (plus 014/015/016/022/023/024 where touched)
-- [ ] Default-deny security constraint enforced (no capability exposure for non-remote-safe)
+- [x] Default-deny security constraint enforced (no capability exposure for non-remote-safe)
-- [ ] Integration tests cover two-node call, default-deny, trusted-peer, from_call, abort cascade
+- [x] Integration tests cover two-node call, default-deny, trusted-peer, from_call, abort cascade
-- [ ] No spec/impl drift in client-and-adapters.md (or drift documented + spec amended)
+- [x] No spec/impl drift in client-and-adapters.md (or drift documented + spec amended)
-- [ ] `cargo fmt --check -p alknet-call` passes
+- [x] `cargo fmt --check -p alknet-call` passes
-- [ ] `cargo clippy -p alknet-call --all-targets` passes with no warnings
+- [x] `cargo clippy -p alknet-call --all-targets` passes with no warnings
-- [ ] All tests pass
+- [x] All tests pass
 
 ## References
 
@@ -155,4 +155,124 @@ NAPI, agent cross-node dispatch).
 > becoming a parallel protocol implementation — verify the loop is genuinely
 > shared (refactored out of CallAdapter), not copy-pasted. If deviations are
 > found, document and fix before considering the call-completion batch done.
-> This unblocks every downstream consumer, so spec/impl drift here propagates.
+> This unblocks every downstream consumer, so spec/impl drift here propagates.
+
+## Review Findings (2026-06-26)
+
+The call-completion batch is complete and conforms to the specs. Findings
+recorded against the checklist above:
+
+### 1. CallClient conformance — PASS
+`CallClient` struct (`registry`, `identity_provider`, `trusted_peer: bool`)
+matches the sketch in `client-and-adapters.md` §CallClient. `new()`
+constructs default-deny; `trusted_peer()` is the explicit opt-in. `connect()`
+dials QUIC on ALPN `alknet/call`, spawns the shared dispatch loop, returns a
+live `CallConnection`. Connection symmetry holds: the returned
+`CallConnection` supports `call()`/`subscribe()`/`abort()` and the dispatch
+loop accepts incoming `call.requested` from the remote peer.
+
+### 2. Shared dispatch loop — PASS (the architectural commitment)
+The dispatch loop is genuinely shared, not duplicated. `protocol/dispatch.rs`
+holds the single `Dispatcher` struct with `run_loop` (sweeper + accept_bi loop
++ fail_all on close), `handle_stream`, `dispatch_requested`,
+`build_root_context`, `compose_root_env`. Both `CallAdapter::handle`
+(adapter.rs:155) and `CallClient::spawn_dispatch` (call_client.rs) construct a
+`Dispatcher` and call `run_loop`. The accept-path and connect-path differ
+only in connection acquisition; the dispatch half is one implementation. This
+satisfies ADR-017 §1's commitment that CallClient is the
+connection-establishment half, not a parallel protocol implementation.
+
+### 3. Peer-scoped filtering / default-deny — PASS (load-bearing security invariant)
+`RemoteFilter { trusted_peer: bool }` on the Dispatcher. In default-deny mode,
+`dispatch_requested` checks `remote_safe` *before* building the context or
+invoking the handler — a non-remote-safe op returns `NOT_FOUND` before any
+capability material reaches the handler (ADR-028 Context). Verified by three
+tests in `client/call_client.rs`:
+- `default_deny_non_remote_safe_does_not_populate_capabilities`: asserts
+  NOT_FOUND for a non-remote-safe op (handler never reached, so capabilities
+  never populated — the security argument).
+- `remote_safe_op_populates_capabilities_for_handler`: asserts the remote-safe
+  op's handler DOES see the google capability (proves the positive case, so
+  the security argument is specifically about non-remote-safe, not all ops).
+- `trusted_peer_populates_capabilities_for_non_remote_safe`: trusted-peer mode
+  populates capabilities for non-remote-safe ops (explicit opt-in).
+`services_list_handler_peer_scoped` hides non-remote-safe ops in default-deny
+mode (ADR-028 Assumption 2 — discovery and dispatch filters agree). Verified
+by `services_list_peer_scoped_*` tests in `registry/discovery.rs`.
+
+### 4. from_call conformance — PASS
+`from_call` calls `services/list` then `services/schema`, rebuilds
+`OperationSpec` from the schema JSON, constructs `FromCall`-provenance bundles
+with forwarding handlers (`composition_authority: None`, `scoped_env: None`,
+empty capabilities, `remote_safe: false` per ADR-028 §4). Namespace collision
+returns `AdapterError::Conflict` (DC-3/OQ-28 default). `operation_filter`
+limits imports. Integration test (`from_call_discovers_and_forwards_over_quic_loopback`)
+proves the discovery → overlay registration → forwarding round-trip over a
+real QUIC connection.
+
+### 5. OperationAdapter trait + AdapterError — PASS
+`#[async_trait] pub trait OperationAdapter: Send + Sync` with
+`async fn import(&self) -> Result<Vec<HandlerRegistration>, AdapterError>`.
+`AdapterError` is `#[non_exhaustive]` + `thiserror::Error` with the five v1
+variants (`DiscoveryFailed`, `SchemaParse`, `Transport`, `Unauthorized`,
+`Conflict`). Lives in alknet-call where the types live. `from_jsonschema`
+implements it (no `.await` in `import` — pure parse).
+
+### 6. from_jsonschema conformance — PASS
+`provenance: FromJsonSchema`, placeholder handler errors if invoked, None
+authority/scoped_env, empty capabilities, `remote_safe: false`, implements
+`OperationAdapter` (no `.await`), malformed (non-object) schema returns
+`SchemaParse`. No network I/O.
+
+### 7. Adapter location map — PASS
+No HTTP deps (reqwest/axum) in alknet-call `Cargo.toml` or `src/`. No
+`from_openapi`/`from_mcp`/`to_openapi`/`to_mcp` implementations (only doc-comment
+references in `AdapterError` variant docs). No MCP stdio (security position
+held). The trait + `from_call` + `from_jsonschema` + `CallClient` live in
+alknet-call; the HTTP-backed adapters are deferred to alknet-http (separate
+Phase 0).
+
+### 8. No-env-vars invariant — PASS
+`grep -rn "std::env::var\|env::var" crates/alknet-call/src/` returns nothing.
+`CallCredentials` carries `tls_identity`/`auth_token`/`remote_identity` — all
+from `Capabilities` (ADR-014). The dispatch path populates
+`OperationContext.capabilities` from the registration bundle, not from env
+vars. No handler reads outbound credentials from any source other than
+`OperationContext.capabilities`.
+
+### 9. Two-way-door remainders (OQ-25..28) — recorded, defaults match spec
+- OQ-25 (remote_safe shape): v1 is `remote_safe: bool`; per-peer allowlist is
+  out of scope. Default false across all provenance (ADR-028 §4).
+- OQ-26 (AdapterError variants): v1 set recorded above; `#[non_exhaustive]`
+  lets alknet-http extend.
+- OQ-27 (re-import trigger): v1 default auto-on-reconnect — assembly layer
+  calls `from_call` immediately after `connect()`.
+- OQ-28 (namespace collision): v1 default error-on-collision
+  (`AdapterError::Conflict`).
+- DC-4 (CallClient TLS client-auth): v1 connects without a client-auth cert
+  (server uses `AcceptAnyCertVerifier`); wiring RawKey client-auth is a
+  two-way-door remainder. The one-way constraint (credentials from
+  Capabilities, not env vars) is unaffected — `auth_token` flows through the
+  call-protocol payload, not TLS.
+
+### 10. Spec drift — NONE requiring amendment
+`client-and-adapters.md` matches the implementation. One intentional
+spec-sketch omission: `connect()`'s return type is `Result<CallConnection,
+ClientError>` (the spec sketch showed `Result<CallConnection>` without the
+error type). This matches DC-4's intent (the error type is an
+implementation-detail two-way door filled in by the implementation), so no
+spec amendment is needed — the sketch was always understood as illustrative.
+
+### 11. Test coverage — PASS
+207 lib tests + 2 integration tests. Integration: `two_node_call_round_trip`
+(connect + outbound call round-trip), `from_call_discovers_and_forwards_over_quic_loopback`
+(discovery + overlay + forwarding over QUIC). Unit: default-deny NOT_FOUND,
+remote_safe dispatches, trusted-peer, capabilities populated only for
+remote-safe (the load-bearing assertion), services/list hide, from_call
+rebuild_spec parsing, FromCallConfig, from_jsonschema bundle shape +
+OperationAdapter impl.
+
+### Verification commands (all green)
+- `cargo fmt --check -p alknet-call` — clean
+- `cargo clippy -p alknet-call --all-targets` — no warnings
+- `cargo test -p alknet-call` — 207 lib + 2 integration pass