chore: release alkhttp 0.2.0

- version bump 0.1.0 -> 0.2.0 (new public API: OpenableAlpn
  establisher fields + with_establisher builder; rides alkcall
  0.5's semver-incompatible channels types)
- README usage snippet 0.1 -> 0.2
- changelog: cut [0.2.0], add the missing alkcall 0.5.0 wave
  (ADR-049 establisher pass) to the dependency history

Verification: cargo test (454 passed), cargo test --all-features
(587 passed), clippy -D warnings (default + all-features),
cargo fmt --check, cargo doc --no-deps,
cargo publish --dry-run --allow-dirty

CHANGELOG.md

@@ -6,6 +6,8 @@ this crate adheres to [Semantic Versioning](https://semver.org/).
 
 ## [Unreleased]
 
+## [0.2.0] — 2026-09-06
+
 ### Changed
 
 - **`alkcall` dependency bumped to 0.2** with the `gateway` feature
@@ -28,6 +30,21 @@ this crate adheres to [Semantic Versioning](https://semver.org/).
     validate before dispatch.
   - 0.4.1 — early-arrival chunks are parked for un-adopted
     channels, closing the open/first-data race on the WS overlay.
+  - 0.5.0 — the channels establisher phase (ADR-049):
+    `OpenableAlpn` gains `establisher: Option<OpenEstablisher>` and
+    `establisher_timeout: Option<Duration>` (both default `None` via
+    `OpenableAlpn::new`, so existing constructions compile
+    unchanged) plus a `with_establisher(establisher, timeout)`
+    builder; the WS ferry calls
+    `register_openable_with_establisher`, threading both fields
+    through. With an establisher attached, the open op awaits the
+    bounded establishment phase before the reply and resolves
+    `channel:open_failed` with `details.reason` on failure — the
+    channel never exists consumer-side. Without one, behavior is
+    the pre-0.5 shape. The alkcall 0.5.0 `open_channel` error-type
+    change needs no alkhttp change (this crate never calls
+    `open_channel`; `from_wss` uses `ChannelClient::from_connection`
+    only).
 - **`/publish` chunk validation uses the registry-owned validator**
   (CF-003). The local compile-once `PublishSchemaCache`
   (`gateway/schema_cache.rs`) is removed — `publish_schema` is

Cargo.lock

@@ -48,7 +48,7 @@ dependencies = [
 
 [[package]]
 name = "alkhttp"
-version = "0.1.0"
+version = "0.2.0"
 dependencies = [
  "alkcall",
  "arc-swap",

Cargo.toml

@@ -1,6 +1,6 @@
 [package]
 name = "alkhttp"
-version = "0.1.0"
+version = "0.2.0"
 edition = "2021"
 rust-version = "1.85"
 license = "MIT OR Apache-2.0"

README.md

@@ -161,7 +161,7 @@ A lean single-side build takes `default-features = false` plus the side
 it needs:
 
 ```toml
-alkhttp = { version = "0.1", default-features = false, features = ["server"] }
+alkhttp = { version = "0.2", default-features = false, features = ["server"] }
 ```
 
 ## Security posture