feat: implement Anthropic native PDF support with document preservation

- Add comprehensive debug logging throughout PDF processing pipeline
- Refactor attachment processing to separate image and document handling
- Create distinct addImageURLs(), addDocuments(), and processAttachments() methods
- Fix critical bugs in stream handling and parameter passing
- Add streamToBuffer utility for proper stream-to-buffer conversion
- Remove api/agents submodule from repository

🤖 Generated with [Claude Code](https://claude.ai/code)

Co-Authored-By: Claude <noreply@anthropic.com>

packages/data-provider/src/azure.ts

@@ -239,13 +239,13 @@ export function mapModelToAzureConfig({
   const { deploymentName = '', version = '' } =
     typeof modelDetails === 'object'
       ? {
-        deploymentName: modelDetails.deploymentName ?? groupConfig.deploymentName,
-        version: modelDetails.version ?? groupConfig.version,
-      }
+          deploymentName: modelDetails.deploymentName ?? groupConfig.deploymentName,
+          version: modelDetails.version ?? groupConfig.version,
+        }
       : {
-        deploymentName: groupConfig.deploymentName,
-        version: groupConfig.version,
-      };
+          deploymentName: groupConfig.deploymentName,
+          version: groupConfig.version,
+        };
 
   if (!deploymentName || !version) {
     throw new Error(
@@ -335,13 +335,13 @@ export function mapGroupToAzureConfig({
   const { deploymentName = '', version = '' } =
     typeof modelDetails === 'object'
       ? {
-        deploymentName: modelDetails.deploymentName ?? groupConfig.deploymentName,
-        version: modelDetails.version ?? groupConfig.version,
-      }
+          deploymentName: modelDetails.deploymentName ?? groupConfig.deploymentName,
+          version: modelDetails.version ?? groupConfig.version,
+        }
       : {
-        deploymentName: groupConfig.deploymentName,
-        version: groupConfig.version,
-      };
+          deploymentName: groupConfig.deploymentName,
+          version: groupConfig.version,
+        };
 
   if (!deploymentName || !version) {
     throw new Error(

packages/data-provider/src/file-config.ts

@@ -169,6 +169,10 @@ export const megabyte = 1024 * 1024;
 export const mbToBytes = (mb: number): number => mb * megabyte;
 
 const defaultSizeLimit = mbToBytes(512);
+
+// Anthropic PDF limits: 32MB max, 100 pages max
+export const anthropicPdfSizeLimit = mbToBytes(32);
+
 const assistantsFileConfig = {
   fileLimit: 10,
   fileSizeLimit: defaultSizeLimit,
@@ -182,6 +186,14 @@ export const fileConfig = {
     [EModelEndpoint.assistants]: assistantsFileConfig,
     [EModelEndpoint.azureAssistants]: assistantsFileConfig,
     [EModelEndpoint.agents]: assistantsFileConfig,
+    [EModelEndpoint.anthropic]: {
+      fileLimit: 10,
+      fileSizeLimit: defaultSizeLimit,
+      totalSizeLimit: defaultSizeLimit,
+      supportedMimeTypes,
+      disabled: false,
+      pdfSizeLimit: anthropicPdfSizeLimit,
+    },
     default: {
       fileLimit: 10,
       fileSizeLimit: defaultSizeLimit,