fix: (regen) route think/models to env.agentRest

[GregHolmes]

Summary

SDK regeneration 2026-05-15. Both temporarily frozen files reviewed; both patches re-applied (no patches dropped this cycle).

Patches re-applied

• src/main/java/com/deepgram/core/ClientOptions.java — restored correct User-Agent / X-Fern-SDK-Name (com.deepgram:deepgram-java-sdk, version 0.4.0) and the // x-release-please-version markers. Generator regen still rewrites these to the wrong artifact id (com.deepgram:deepgram-sdk / com.deepgram.fern:api-sdk) and strips the markers.
• src/main/java/com/deepgram/core/ReconnectingWebSocketListener.java — restored applyOptionsOverride(...) runtime hook (used by TransportWebSocketFactory to apply DeepgramTransportFactory.reconnectOptions() without editing generated WS clients), volatile qualifier on option-derived fields, configurable connectionTimeoutMs on ReconnectOptions (was hardcoded 4000ms), and the maxRetries(0) "connect once, don't retry" semantics (retryCount > maxRetries, not >=).

Generator changes worth flagging

• Environment constructor signature changed from 3-arg to 4-arg with a new agentRest field, plus getAgentRestURL() and Environment.Builder#agentRest(...).
• resources/agent/v1/settings/think/models/{Raw,AsyncRaw}ModelsClient.java now route via environment().getAgentRestURL() instead of getAgentURL().
• .fern/metadata.json bumped sdkVersion: 0.4.1.

Environment change — intentional fix, not a break

The regen drops Environment.AGENT and adds a new agentRest slot to Environment (with a 4-arg constructor and corresponding builder method). This is fixing the previously broken agent.v1.settings.think.models.list() route: the old .AGENT env routed REST traffic to the wrong host, so any caller of that endpoint was already broken. The new agentRest slot is the dedicated REST host for agent-served endpoints.

Equivalent fix in Python SDK: deepgram/deepgram-python-sdk#715. JS SDK equivalent (deepgram-js-sdk#499) additionally needed a src/Client.ts patch because client.fetch() passthrough started defaulting to agentRest instead of base. The Java SDK has no equivalent passthrough in the hand-maintained DeepgramClient/DeepgramClientBuilder, so no analogous patch is needed here.

Hand-maintained tests that referenced Environment.AGENT (EnvironmentTest's AGENT environment nested class and ClientBuilderTest#testAgentEnvironment) were updated to build an agent-shaped environment via Environment.custom().agentRest(...).

Validation

• ./gradlew test compileExamples → BUILD SUCCESSFUL
• ReconnectingWebSocketListenerTest covers the re-applied patches: applyOptionsOverride, maxRetries(0) initial-attempt allowance, connectionTimeoutMs configurability — all green
• All .bak files deleted; .fernignore paths restored to originals for both still-patched files

Test plan

• Re-apply manual patches after regen.
• Restore .fernignore originals; drop .bak shadow paths.
• Delete all .bak files.
• ./gradlew test compileExamples validated.