fix: keep object shape under conditional allOf; stop double-printing error sources

CHANGELOG.md

@@ -12,6 +12,17 @@ when correcting output that was wrong or incomplete on the wire.
   so existing validation error links resolve (#109). Website builds now check
   that every emitted problem URI has a page. Document response middleware for
   customizing the existing public validation error profile.
+- An object schema whose `allOf` holds only `if`/`then`/`else` rules now
+  generates as its struct instead of `serde_json::Value`, so a discriminated
+  `oneOf` with it as a branch stays tagged (#111). Conditional-only members are
+  value rules and no longer shape the composed type, and an owner's own
+  `properties` are kept when its `allOf` has a single `$ref` or untyped member.
+- Error variants that wrap a source with `#[from]` no longer repeat it in their
+  message, so error-chain reporters print each cause once (#112). This covers
+  generated `HttpError::{Network, Middleware}` and `StreamingError::Json`, plus
+  this crate's `GeneratorError`, `HttpError`, and `server` edit errors. Use
+  `std::error::Error::source()` (or a chain reporter such as `anyhow`'s `{:#}`)
+  to show the cause; the CLI and playground now render the full chain.
 
 ## [0.23.0] - 2026-10-25
 

examples/generated/REQUIRED_DEPS.toml

@@ -0,0 +1,17 @@
+# Generated by openapi-to-rust.
+# Complete direct dependencies for this generated output.
+# Append this fragment to the consuming crate's Cargo.toml, or
+# merge it with existing dependency and feature sections.
+
+[dependencies]
+futures-util = "0.3"
+reqwest = { version = "0.13", default-features = false, features = ["rustls", "stream"] }
+reqwest-middleware = "0.5"
+reqwest-retry = "0.9"
+reqwest-tracing = "0.7"
+serde = { version = "1", features = ["derive"] }
+serde_json = "1"
+thiserror = "2"
+
+[target.'cfg(target_arch = "wasm32")'.dependencies]
+getrandom = { version = "0.4", features = ["wasm_js"] }