chore: re-apply manual patches after regen

Second regeneration on this branch. Notable generator change: ListenV2TurnInfoWordsItem start/end are now required double (was Optional<Float>).
- ClientOptions.java: restore deepgram-java-sdk header constants + x-release-please-version markers (gen reverted to wrong SDK name / 0.5.1)
- ReconnectingWebSocketListener.java: re-apply maxRetries(0) semantics, configurable connectionTimeoutMs, applyOptionsOverride() hook
- .fernignore: restore both original paths
- remove transient .bak files

Author: GregHolmes

.fernignore

@@ -14,15 +14,15 @@ src/main/java/com/deepgram/AsyncDeepgramClientBuilder.java
 # Contains User-Agent, X-Fern-SDK-Name, and X-Fern-SDK-Version headers
 # with // x-release-please-version comments for automated version bumps.
 # Fern regen overwrites these with incorrect SDK names and strips the markers.
-src/main/java/com/deepgram/core/ClientOptions.java.bak
+src/main/java/com/deepgram/core/ClientOptions.java
 
 # Transport abstraction (pluggable transport for SageMaker, etc.)
 src/main/java/com/deepgram/core/transport/
 
 # Bug fixes for maxRetries(0) semantics ("connect once, don't retry") and a
 # configurable connectionTimeoutMs on ReconnectOptions (was hardcoded 4000ms).
 # Pull this back out once the fixes are upstreamed into the Fern generator.
-src/main/java/com/deepgram/core/ReconnectingWebSocketListener.java.bak
+src/main/java/com/deepgram/core/ReconnectingWebSocketListener.java
 
 # Build and project configuration
 build.gradle

src/main/java/com/deepgram/core/ClientOptions.java

@@ -41,10 +41,10 @@ private ClientOptions(
         this.headers.putAll(headers);
         this.headers.putAll(new HashMap<String, String>() {
             {
-                put("User-Agent", "com.deepgram:deepgram-sdk/0.5.1");
+                put("User-Agent", "com.deepgram:deepgram-java-sdk/0.5.0"); // x-release-please-version
                 put("X-Fern-Language", "JAVA");
-                put("X-Fern-SDK-Name", "com.deepgram.fern:api-sdk");
-                put("X-Fern-SDK-Version", "0.5.1");
+                put("X-Fern-SDK-Name", "com.deepgram:deepgram-java-sdk");
+                put("X-Fern-SDK-Version", "0.5.0"); // x-release-please-version
             }
         });
         this.headerSuppliers = headerSuppliers;