rm duplicate chat context fct

Author: simllll

agents/src/llm/chat_context.ts

@@ -498,114 +498,6 @@ export class ChatContext {
   async toProviderFormat(format: ProviderFormat, injectDummyUserMessage: boolean = true) {
     return await toChatCtx(format, this, injectDummyUserMessage);
   }
-
-  /**
-   * Compare this ChatContext with another for logical equivalence.
-   * Unlike strict equality, this method:
-   * - Ignores timestamps (createdAt fields)
-   * - Ignores other volatile metadata
-   * - Focuses on content: compares IDs, types, and payload
-   *
-   * This is useful for detecting if the conversation content has changed,
-   * for example when validating preemptive generation results.
-   *
-   * @param other - The ChatContext to compare with
-   * @returns true if both contexts contain the same sequence of items with matching essential fields
-   */
-  isEquivalent(other: ChatContext): boolean {
-    // Same object reference
-    if (this === other) {
-      return true;
-    }
-
-    // Different lengths
-    if (this._items.length !== other._items.length) {
-      return false;
-    }
-
-    // Compare each item pair
-    for (let i = 0; i < this._items.length; i++) {
-      const a = this._items[i]!;
-      const b = other._items[i]!;
-
-      // IDs and types must match
-      if (a.id !== b.id || a.type !== b.type) {
-        return false;
-      }
-
-      // Type-specific field comparison
-      if (a.type === 'message' && b.type === 'message') {
-        // Compare role, content, and interrupted status (not timestamp)
-        if (a.role !== b.role || a.interrupted !== b.interrupted) {
-          return false;
-        }
-
-        // Compare content arrays
-        if (a.content.length !== b.content.length) {
-          return false;
-        }
-
-        for (let j = 0; j < a.content.length; j++) {
-          const ca = a.content[j]!;
-          const cb = b.content[j]!;
-
-          // Both are strings
-          if (typeof ca === 'string' && typeof cb === 'string') {
-            if (ca !== cb) {
-              return false;
-            }
-          }
-          // Both are objects
-          else if (typeof ca === 'object' && typeof cb === 'object') {
-            if (ca.type !== cb.type) {
-              return false;
-            }
-
-            if (ca.type === 'image_content' && cb.type === 'image_content') {
-              // Compare essential image fields (not cache)
-              if (
-                ca.id !== cb.id ||
-                ca.image !== cb.image ||
-                ca.inferenceDetail !== cb.inferenceDetail ||
-                ca.inferenceWidth !== cb.inferenceWidth ||
-                ca.inferenceHeight !== cb.inferenceHeight ||
-                ca.mimeType !== cb.mimeType
-              ) {
-                return false;
-              }
-            } else if (ca.type === 'audio_content' && cb.type === 'audio_content') {
-              // Compare audio transcript (frames comparison would be too expensive)
-              if (ca.transcript !== cb.transcript) {
-                return false;
-              }
-            }
-          }
-          // Mismatched types
-          else {
-            return false;
-          }
-        }
-      } else if (a.type === 'function_call' && b.type === 'function_call') {
-        // Compare name, callId, and args (not timestamp)
-        if (a.name !== b.name || a.callId !== b.callId || a.args !== b.args) {
-          return false;
-        }
-      } else if (a.type === 'function_call_output' && b.type === 'function_call_output') {
-        // Compare name, callId, output, and isError (not timestamp)
-        if (
-          a.name !== b.name ||
-          a.callId !== b.callId ||
-          a.output !== b.output ||
-          a.isError !== b.isError
-        ) {
-          return false;
-        }
-      }
-    }
-
-    return true;
-  }
-
   /**
    * Internal helper used by `truncate` & `addMessage` to find the correct
    * insertion index for a timestamp so the list remains sorted.