fix: Prevent block_locator from ignoring newlines

block_locator was trimming empty lines from the beginning and end of files. This is more impactful when trying to append to a file that ends in a newline, which would include any text file adhering to the POSIX standard (ending in a newline).

Sometimes LLMs include the trailing newline in the search block, which causes the bound check to short-circuit in SearchEngine:_evaluate_position().

Author: slg95

lua/mcphub/native/neovim/files/edit_file/block_locator.lua

@@ -28,7 +28,7 @@ end
 ---@param file_content string Content of the target file
 ---@return LocatedBlock[] located_blocks Blocks with location information
 function BlockLocator:locate_all_blocks(parsed_blocks, file_content)
-    local file_lines = vim.split(file_content, "\n", { plain = true, trimempty = true })
+    local file_lines = vim.split(file_content, "\n", { plain = true, trimempty = false })
     local located_blocks = {}
     for _, parsed_block in ipairs(parsed_blocks) do
         if vim.trim(parsed_block.search_content) == "" then