docs: full migration of docs/ to fern format in fern/ (#6050)

Signed-off-by: Dan Gil <dagil@nvidia.com>
Co-authored-by: Cursor <cursoragent@cursor.com>

fern/pages/design-docs/event-plane.md

@@ -16,8 +16,7 @@ Dynamo's coordination layer adapts to the deployment environment:
 | **Kubernetes** (with operator) | Native K8s (CRDs, EndpointSlices) | NATS (optional) | TCP |
 | **Bare metal / Local** (default) | etcd | NATS (optional) | TCP |
 
-> [!NOTE]
-> The runtime always defaults to `kv_store` (etcd) for service discovery. Kubernetes deployments must explicitly set `DYN_DISCOVERY_BACKEND=kubernetes` - the Dynamo operator handles this automatically.
+> **Note:** The runtime always defaults to `kv_store` (etcd) for service discovery. Kubernetes deployments must explicitly set `DYN_DISCOVERY_BACKEND=kubernetes` - the Dynamo operator handles this automatically.
 
 ```
 ┌─────────────────────────────────────────────────────────────────────┐
@@ -51,8 +50,7 @@ The operator explicitly sets:
 DYN_DISCOVERY_BACKEND=kubernetes
 ```
 
-> [!WARNING]
-> This must be explicitly configured. The runtime defaults to `kv_store` in all environments.
+> **Important:** This must be explicitly configured. The runtime defaults to `kv_store` in all environments.
 
 ### How It Works
 
@@ -461,5 +459,5 @@ This provides KV-aware routing with reduced accuracy but no NATS dependency.
 ## Related Documentation
 
 - [Distributed Runtime](distributed-runtime.md) - Runtime architecture
-- [Request Plane](../guides/request-plane.md) - Request transport configuration
-- [Fault Tolerance](../fault-tolerance/request-cancellation.md) - Failure handling
+- [Request Plane](request-plane.md) - Request transport configuration
+- [Fault Tolerance](../fault-tolerance/README.md) - Failure handling

fern/pages/development/backend-guide.md

@@ -72,7 +72,6 @@ The `model_type` can be:
 - `model_name`: The name to call the model. Your incoming HTTP requests model name must match this. Defaults to the hugging face repo name or the folder name.
 - `context_length`: Max model length in tokens. Defaults to the model's set max. Only set this if you need to reduce KV cache allocation to fit into VRAM.
 - `kv_cache_block_size`: Size of a KV block for the engine, in tokens. Defaults to 16.
-- `migration_limit`: Maximum number of times a request may be [migrated to another Instance](../fault-tolerance/request-migration.md). Defaults to 0.
 - `user_data`: Optional dictionary containing custom metadata for worker behavior (e.g., LoRA configuration). Defaults to None.
 
 See `examples/backends` for full code examples.

fern/pages/development/runtime-guide.md

@@ -61,7 +61,7 @@ be operating within your distributed runtime.
 
 The current examples use a hard-coded `namespace`. We will address the `namespace` collisions later.
 
-All examples require the `etcd` and `nats.io` pre-requisites to be running and available.
+Most examples require `etcd` for service discovery. `nats.io` is required for KV-aware routing with event tracking; for approximate mode (`--no-kv-events`), NATS is optional.
 
 #### Rust `hello_world`