🪨 feat: Add Bedrock Prompt Caching Support (#8271)

* feat: Add Bedrock Cache Control Functionality

- fix: Update Bedrock Cache Control to Require cachePoint as a Separate Content Block

- Modified the addBedrockCacheControl function to ensure cachePoint is added as a separate content block in the content array, rather than as a property of text objects.

- refactor: move addBedrockCacheControl over to packages/api

- ci: add tests for addBedrockCacheControl until full coverage reached

* ci: add test similar to example from the langchain PR

* refactor: move addBedrockCacheControl logic and tests to agents repository

* chore: remove extraneous comment

* chore: update @librechat/agents dependency to version 3.0.12

* chore: update @librechat/agents dependency to version 3.0.13

* chore: update @librechat/agents dependency to version 3.0.14

* chore: update @librechat/agents to v3.0.15

* chore: update default value for prompt cache setting to true

* refactor: set default promptCache to true for claude and nova models

---------

Co-authored-by: Danny Avila <danny@librechat.ai>

packages/data-provider/src/parameterSettings.ts

@@ -492,6 +492,19 @@ const bedrock: Record<string, SettingDefinition> = {
     default: 0.999,
     range: { min: 0, max: 1, step: 0.01 },
   }),
+  promptCache: {
+    key: 'promptCache',
+    label: 'com_endpoint_prompt_cache',
+    labelCode: true,
+    type: 'boolean',
+    description: 'com_endpoint_anthropic_prompt_cache',
+    descriptionCode: true,
+    default: true,
+    component: 'switch',
+    optionType: 'conversation',
+    showDefault: false,
+    columnSpan: 2,
+  },
 };
 
 const mistral: Record<string, SettingDefinition> = {
@@ -752,6 +765,7 @@ const bedrockAnthropic: SettingsConfiguration = [
   baseDefinitions.stop,
   librechat.resendFiles,
   bedrock.region,
+  bedrock.promptCache,
   anthropic.thinking,
   anthropic.thinkingBudget,
   librechat.fileTokenLimit,
@@ -789,6 +803,7 @@ const bedrockGeneral: SettingsConfiguration = [
   meta.topP,
   librechat.resendFiles,
   bedrock.region,
+  bedrock.promptCache,
   librechat.fileTokenLimit,
 ];
 
@@ -807,6 +822,7 @@ const bedrockAnthropicCol2: SettingsConfiguration = [
   bedrock.topK,
   librechat.resendFiles,
   bedrock.region,
+  bedrock.promptCache,
   anthropic.thinking,
   anthropic.thinkingBudget,
   librechat.fileTokenLimit,
@@ -856,6 +872,7 @@ const bedrockGeneralCol2: SettingsConfiguration = [
   meta.topP,
   librechat.resendFiles,
   bedrock.region,
+  bedrock.promptCache,
   librechat.fileTokenLimit,
 ];