Bump the alkcall dependency to 0.2 (with the gateway feature) and
converge on the promoted shared pieces:
- The local dispatch spine (gateway/dispatch.rs, 721 lines) is deleted;
GatewayDispatch, schema_disclosure_denial, and DEFAULT_DEADLINE are
re-exported from alkcall::gateway (alkcall ADR-048). The 30 s default
deadline preserves the previous behavior exactly.
- gateway/schema_cache.rs (PublishSchemaCache) is deleted: alkcall CF-003
compiles publish_schema at registration time and exposes
OperationRegistry::publish_validator; the /publish chunk stream
resolves against it. Un-compilable schemas are now rejected at
registration, so the two end-to-end fail-closed tests were reworked
into a registration-rejection test (a stronger guarantee).
- schema_disclosure_denial consumers (to_mcp, routes) use alkcall's
promoted implementation; the alkhttp-local copy is gone (ADR-071
updated: the guard stays as defense-in-depth, the implementation no
longer forks).
- CF-001: from_wss drop monitor and the WS overlay tests use
CallError::connection_closed; the review-001-ws-eof-signal race tests
now assert retryable CONNECTION_CLOSED on both resolution paths (the
tolerated non-retryable INTERNAL write-failure outcome is gone).
- Added CHANGELOG.md (Keep a Changelog), Unreleased section records the
bump and convergence.
Verification: cargo test default 453 ok, wss 470 ok, mcp 526 ok,
all-features 575 ok; clippy -D warnings clean (default + all-features,
all-targets); fmt clean; cargo doc warning-free.
Net: -1093 lines.