chore: release 0.20.0 - upgrade to holochain 0.7.0 / client 0.21.0

- Bump @holochain/client to ^0.21.0, hdk to 0.7.0, hdi to 0.8.0, and pin
  the nix flake to holonix main-0.7 (holochain 0.7.0 stable).
- Adapt to the restructured DhtOp/ChainOp shapes: variants carry a
  SignedAction of { data, signature }; entry-bearing variants serialize
  as a [signedAction, entry] tuple, action-only variants as the bare
  signed action.
- Close the app websocket only when its transport is a WsClient, as
  AppWebsocket.client is now the narrower AppClientTransport type.
- Rename the generated conductor config field signal_url to relay_url
  for the iroh transport; kitsune2-bootstrap-srv serves as both
  bootstrap server and relay.
- Exclude CreateEntry ops of private entries from the dhtSync
  comparison; they are integrated on the author but never published.
- Update test op-count expectations and create the 0-arc player after
  the full-arc players so its genesis publish finds authorities within
  the test timeout.

Author: zippy

CHANGELOG.md

@@ -7,7 +7,17 @@ This project adheres to [Semantic Versioning](https://semver.org/spec/v2.0.0.htm
 ### Added
 ### Removed
 ### Changed
-- **BREAKING**: Upgraded to Holochain 0.7 and `@holochain/client` 0.21. Tryorama 0.20.x is compatible with Holochain 0.7.x.
+### Fixed
+
+## 2026-07-31: v0.20.0
+
+### Added
+### Removed
+### Changed
+- **BREAKING**: Upgraded to Holochain 0.7.0 (stable) and `@holochain/client` ^0.21.0. Tryorama 0.20.x is compatible with Holochain 0.7.x.
+- Adapted to the restructured `DhtOp`/`ChainOp` data shapes of Holochain 0.7 (variants now carry a `SignedAction` of `{ data, signature }`; entry-bearing variants serialize as a `[signedAction, entry]` tuple, action-only variants as the bare signed action) and to the narrowed `AppWebsocket.client` transport type of client 0.21.
+- Renamed the generated conductor config field `signal_url` to `relay_url`, matching Holochain 0.7's move to the iroh transport. The local `kitsune2-bootstrap-srv` now serves as both bootstrap server and iroh relay.
+- `dhtSync` now excludes `CreateEntry` ops of private entries from the DHT state comparison. Since Holochain 0.7 these ops are integrated on the authoring conductor but never published, so conductors could never appear in sync once any private entry (e.g. a zome-call signing cap grant) existed.
 ### Fixed
 
 ## 2025-11-20: v0.19.0

Cargo.lock

@@ -6,9 +6,9 @@ members = [
 resolver = "2"
 
 [workspace.dependencies]
-hdi = "0.8.0-dev.9"
-hdk = "0.7.0-dev.12"
-holochain_serialized_bytes = "0.0.56"
+hdi = "0.8.0"
+hdk = "0.7.0"
+holochain_serialized_bytes = "0.0.57"
 serde = "1.0.192"
 
 [profile.dev]