revert: revert "feat: add image reading support to Read tool" (#605)

src/cli/App.tsx

@@ -158,10 +158,6 @@ import {
   subscribe as subscribeToSubagents,
 } from "./helpers/subagentState";
 import { getRandomThinkingVerb } from "./helpers/thinkingMessages";
-import {
-  clearQueuedToolImages,
-  getAndClearQueuedToolImages,
-} from "./helpers/toolImageRegistry";
 import {
   isFileEditTool,
   isFileWriteTool,
@@ -3250,9 +3246,6 @@ export default function App({
       // Lock input for async operation (set before any await to prevent queue processing)
       setCommandRunning(true);
 
-      // Clear any queued tool images from the previous agent context
-      clearQueuedToolImages();
-
       const inputCmd = "/agents";
       const cmdId = uid("cmd");
 
@@ -3740,44 +3733,9 @@ export default function App({
         // Send all results to server if any
         if (allResults.length > 0) {
           toolResultsInFlightRef.current = true;
-
-          // Check for queued tool images (from Read tool reading image files)
-          const toolImages = getAndClearQueuedToolImages();
-          const input: Array<MessageCreate | ApprovalCreate> = [
+          await processConversation([
             { type: "approval", approvals: allResults },
-          ];
-
-          // If there are queued images, add them as a user message
-          if (toolImages.length > 0) {
-            const imageContentParts: Array<
-              | { type: "text"; text: string }
-              | {
-                  type: "image";
-                  source: { type: "base64"; media_type: string; data: string };
-                }
-            > = [];
-            for (const img of toolImages) {
-              imageContentParts.push({
-                type: "text",
-                text: `<system-reminder>Image read from ${img.filePath} (Read tool call: ${img.toolCallId}):</system-reminder>`,
-              });
-              imageContentParts.push({
-                type: "image",
-                source: {
-                  type: "base64",
-                  media_type: img.mediaType,
-                  data: img.data,
-                },
-              });
-            }
-            input.push({
-              type: "message",
-              role: "user",
-              content: imageContentParts as unknown as MessageCreate["content"],
-            });
-          }
-
-          await processConversation(input);
+          ]);
           toolResultsInFlightRef.current = false;
         }
       } finally {
@@ -4415,9 +4373,6 @@ export default function App({
 
           setCommandRunning(true);
 
-          // Clear any queued tool images from the previous conversation
-          clearQueuedToolImages();
-
           try {
             const client = await getClient();
 
@@ -5643,37 +5598,7 @@ ${gitContext}
       }
 
       // Build message content from display value (handles placeholders for text/images)
-      let contentParts = buildMessageContentFromDisplay(msg);
-
-      // Prepend any queued tool images (from Read tool reading image files)
-      const queuedToolImages = getAndClearQueuedToolImages();
-      if (queuedToolImages.length > 0) {
-        const imageParts: Array<
-          | { type: "text"; text: string }
-          | {
-              type: "image";
-              source: { type: "base64"; media_type: string; data: string };
-            }
-        > = [];
-        for (const img of queuedToolImages) {
-          // Add system reminder text
-          imageParts.push({
-            type: "text",
-            text: `<system-reminder>Image read from ${img.filePath} (Read tool call: ${img.toolCallId}):</system-reminder>`,
-          });
-          // Add image content
-          imageParts.push({
-            type: "image",
-            source: {
-              type: "base64",
-              media_type: img.mediaType,
-              data: img.data,
-            },
-          });
-        }
-        // Prepend to contentParts
-        contentParts = [...imageParts, ...contentParts];
-      }
+      const contentParts = buildMessageContentFromDisplay(msg);
 
       // Prepend plan mode reminder if in plan mode
       const planModeReminder = getPlanModeReminder();

src/cli/helpers/toolImageRegistry.ts

@@ -1,47 +0,0 @@
-// Registry for images read by tools that need to be sent in the next user message turn.
-// This is needed because tool returns only support string content - we can't return
-// image data directly in tool results to the Letta API.
-
-export interface QueuedToolImage {
-  toolCallId: string;
-  filePath: string;
-  data: string; // base64
-  mediaType: string;
-  width: number;
-  height: number;
-}
-
-const queuedImages: QueuedToolImage[] = [];
-
-/**
- * Queue an image to be sent in the next user message.
- * Called by the Read tool when reading an image file.
- */
-export function queueToolImage(image: QueuedToolImage): void {
-  queuedImages.push(image);
-}
-
-/**
- * Get and clear all queued images.
- * Called when building the user message content.
- */
-export function getAndClearQueuedToolImages(): QueuedToolImage[] {
-  const images = [...queuedImages];
-  queuedImages.length = 0;
-  return images;
-}
-
-/**
- * Clear all queued images without returning them.
- * Called on conversation/agent switch to prevent memory leaks.
- */
-export function clearQueuedToolImages(): void {
-  queuedImages.length = 0;
-}
-
-/**
- * Check if there are any queued images.
- */
-export function hasQueuedToolImages(): boolean {
-  return queuedImages.length > 0;
-}