fix: disable compact history messages for dispatch agent (#1954)

lua/avante/llm.lua

@@ -290,7 +290,12 @@ function M.generate_prompts(opts)
 
   local final_history_messages = {}
   if opts.history_messages then
-    if Config.history.max_tokens > 0 then remaining_tokens = math.min(Config.history.max_tokens, remaining_tokens) end
+    if opts.disable_compact_history_messages then
+      final_history_messages = vim.list_extend(final_history_messages, opts.history_messages)
+    else
+      if Config.history.max_tokens > 0 then
+        remaining_tokens = math.min(Config.history.max_tokens, remaining_tokens)
+      end
       -- Traverse the history in reverse, keeping only the latest history until the remaining tokens are exhausted and the first message role is "user"
       local history_messages = {}
       for i = #opts.history_messages, 1, -1 do
@@ -313,6 +318,7 @@ function M.generate_prompts(opts)
       -- prepend the history messages to the messages table
       vim.iter(history_messages):each(function(msg) table.insert(final_history_messages, msg) end)
     end
+  end
 
   -- Utils.debug("opts.history_messages", opts.history_messages)
   -- Utils.debug("final_history_messages", final_history_messages)

lua/avante/llm_tools/dispatch_agent.lua

@@ -94,6 +94,7 @@ When you're done, provide a clear and concise summary of what you found.]]):gsub
 
   local stream_options = {
     ask = true,
+    disable_compact_history_messages = true,
     memory = memory_content,
     code_lang = "unknown",
     provider = Providers[Config.provider],

lua/avante/types.lua

@@ -349,6 +349,7 @@ vim.g.avante_login = vim.g.avante_login
 ---@field update_snippets? string[]
 ---@field prompt_opts? AvantePromptOptions
 ---@field session_ctx? table
+---@field disable_compact_history_messages? boolean
 ---
 ---@class AvanteLLMToolHistory
 ---@field tool_result? AvanteLLMToolResult