chore: add docstrings and field descriptions across SDK model types

fern-api[bot] · web-flow · commit f0ce1f715a75 · 2026-07-20T18:01:55.000Z
Enrich dozens of Pydantic model classes with class-level docstrings and
`pydantic.Field(description=...)` annotations. These additions improve
IDE hover documentation and generated API reference output without
changing any public signatures, serialization behavior, or runtime logic.

Key changes:
- Add class-level docstrings to models including `Assistant`, `Call`, `BackoffPlan`, `CompliancePlan`, `ConversationNode`, `CampaignPaginatedResponse`, and many more
- Add `pydantic.Field(description=...)` to previously bare field declarations (e.g. `type`, `method`, `name`, `customer`, `error` fields)
- Update `User-Agent` header value to version placeholder `0.0.0-fern-placeholder`

🌿 Generated with Fern
diff --git a/changelog.md b/changelog.md
@@ -1,3 +1,5 @@
+## [2.0.1] - 2026-07-20
+
 ## 2.0.0 - 2026-06-24
 ### Breaking Changes
 * **`CartesiaExperimentalControlsSpeedZero`** has been removed and replaced by **`CartesiaSpeedControlZero`**. Update any imports or type annotations referencing `CartesiaExperimentalControlsSpeedZero` to use `CartesiaSpeedControlZero` instead.

Original file line number	Diff line number	Diff line change
`@@ -1,3 +1,5 @@`
	`1`	`+## [2.0.1] - 2026-07-20`
	`2`	`+`
`1`	`3`	`## 2.0.0 - 2026-06-24`
`2`	`4`	`### Breaking Changes`
`3`	`5`	* `CartesiaExperimentalControlsSpeedZero` has been removed and replaced by `CartesiaSpeedControlZero`. Update any imports or type annotations referencing `CartesiaExperimentalControlsSpeedZero` to use `CartesiaSpeedControlZero` instead.