Update changelogs from fern repo

fern/products/cli-api-reference/cli-changelog/2026-07-29.mdx

@@ -1,3 +1,15 @@
+## 5.84.0
+**`(feat):`** Add a `--pack` flag to `fern generate`. When generating to the local file system, the CLI now
+builds distributable package artifacts (npm tarball, Python wheel, JAR, NuGet package, gem,
+Composer zip, crate) into a `fern-dist/` folder inside each output directory, so SDKs can be
+shared internally without publishing to a registry. Use `--pack-mode docker` to run the
+packaging toolchains inside official Docker images instead of requiring them on the host.
+`--pack` also generates full, packageable projects (pyproject.toml, README.md, etc.) for
+local-file-system outputs so the packaging toolchains have the metadata they need, and
+host-mode packaging hides any enclosing git repository so VCS-aware build backends
+(e.g. poetry-core) don't silently exclude gitignored output files from the artifact.
+
+
 ## 5.83.1
 **`(fix):`** Fix user-specified OpenRPC examples to use the method's computed endpoint path instead of
 appending a hardcoded `/{apiKey}` path.

fern/products/sdks/generators/csharp/changelog/2026-07-29.mdx

@@ -0,0 +1,7 @@
+## 2.79.3
+**`(fix):`** Only reference `README.md` in the generated `.csproj` when the file actually exists. The
+`<PackageReadmeFile>` property and the packed `<None Include>` item are now guarded with an
+MSBuild `Exists` condition, so `dotnet pack` no longer fails with NU5019 for outputs that do
+not include a README (e.g. local-file-system output).
+
+

fern/products/sdks/generators/ruby/changelog/2026-07-29.mdx

@@ -0,0 +1,8 @@
+## 1.20.2
+**`(fix):`** Fix `gem build` producing an empty gem when the generated SDK is not inside a git checkout:
+the generated gemspec now falls back to filesystem globbing when `git ls-files` returns no
+files. Also stamp the gem version and name from the IR's filesystem publish target
+(populated by `fern generate --version <version>` for local-file-system output) instead of
+always defaulting to `0.0.0`.
+
+