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## 2.83.1

**`(fix):`** Honor the `x-fern-retries: { disabled: true }` extension (`retries: { disabled: true }` in a Fern
definition) at the endpoint level. Requests for those endpoints are now sent exactly once, even when
the client or the per-request options configure retries.

## 2.83.0

**`(feat):`** Added a `generate-documentation-file` config option (default `true`) so the
generated csproj emits XML documentation and the published NuGet package ships
`lib/<tfm>/<Namespace>.xml`, giving consumers IntelliSense. CS1591 is
suppressed so enabling documentation does not introduce warnings for
undocumented members.

**`(feat):`** Added a `package-metadata` config block for NuGet metadata written into the
generated csproj: `description`, `authors`, `tags`, `copyright`, `icon`,
`project-url`, `repository-url`, `repository-type`, `include-source-link`
(adds `Microsoft.SourceLink.GitHub`) and `include-symbols` (produces a
`.snupkg`).

**`(fix):`** Global header values set on `ClientOptions` are now respected in the default
(non-unified) client shape. Previously the generated root client read only the
constructor parameter for a promoted global header, so
`new Client(clientOptions: new ClientOptions { Version = "..." })` was silently
ignored and a stray environment variable could win instead. The resolution
order is now: explicit constructor argument, `ClientOptions` property,
environment variable, then the literal/client default.

**`(fix):`** `ClientOptions.Clone()` now copies literal global header properties (e.g.
`Version`), which were previously dropped when the options were cloned.

**`(fix):`** Escape markup characters in the attribute values of documentation comment tags. Descriptions
containing links such as `<a href="https://example.com/docs?a=1&b=2">` no longer emit invalid
XML (CS1570) in generated documentation comments, while attribute values that already contain
character or entity references are left untouched.

**`(fix):`** The generated README's `## Requirements` section is now populated with the
project's target frameworks (".NET 8 and above", ".NET Framework 4.6.2 and
above", ".NET Standard 2.0 and above"). Previously the C# generator passed an
empty requirements list, so the section rendered as a dangling
"This SDK requires:" with no entries.

**`(fix):`** README and dynamic snippets no longer pass an upper-cased placeholder for
global header constructor parameters (e.g. `new Client("TOKEN", "VERSION")`,
which sent the literal header value `VERSION` at runtime). Snippets now use
the header's literal or client default value when one is known.

**`(fix):`** Fixed invalid C# in the generated README: `RequestOptions` examples used
object-initializer syntax with `:` instead of `=` (`new RequestOptions { MaxRetries: 0 }`),
and the `WithRawResponse` section declared `var data` twice in one block.

**`(fix):`** Fix invalid `<see cref="..."/>` documentation comments generated for union types. Type names
are now converted to documentation comment identifiers (`List<string>` becomes
`List{String}`, `object?` becomes `object`), and types that cannot be expressed as an
identifier (arrays, nested generic arguments) are rendered as escaped inline code instead.
This removes CS1570/CS1584/CS1658 warnings from generated SDKs that contain unions when XML
documentation is enabled.

**`(fix):`** Escaped generic type syntax in the XML doc comments of the generated core
files (`Optional`, `OptionalAttribute`, `NullableAttribute`, `Extensions`),
and added the missing `param` tags on `Extensions.Assert`. Building generated
SDKs with XML documentation enabled no longer emits CS1570/CS1573 warnings.