fix(tui): normalize autocomplete attachments

packages/tui/src/component/prompt/autocomplete.tsx

@@ -261,7 +261,7 @@ export function Autocomplete(props: {
       filename,
       part: {
         type: "file" as const,
-        mime: item.mime,
+        mime: item.type === "directory" ? "application/x-directory" : "text/plain",
         filename,
         url: urlObj.href,
         source: {

packages/tui/src/routes/session/index.tsx

@@ -1347,16 +1347,6 @@ export function Session() {
   )
 }
 
-const MIME_BADGE: Record<string, string> = {
-  "text/plain": "txt",
-  "image/png": "img",
-  "image/jpeg": "img",
-  "image/gif": "img",
-  "image/webp": "img",
-  "application/pdf": "pdf",
-  "application/x-directory": "dir",
-}
-
 function UserMessage(props: {
   message: UserMessage
   parts: Part[]
@@ -1417,14 +1407,12 @@ function UserMessage(props: {
               <box flexDirection="row" paddingBottom={metadataVisible() ? 1 : 0} paddingTop={1} gap={1} flexWrap="wrap">
                 <For each={files()}>
                   {(file) => {
-                    const bg = createMemo(() => {
-                      if (file.mime.startsWith("image/")) return theme.accent
-                      if (file.mime === "application/pdf") return theme.primary
-                      return theme.secondary
-                    })
+                    const directory = file.mime === "application/x-directory"
                     return (
                       <text fg={theme.text}>
-                        <span style={{ bg: bg(), fg: theme.background }}> {MIME_BADGE[file.mime] ?? file.mime} </span>
+                        <span style={{ bg: theme.secondary, fg: theme.background }}>
+                          {directory ? " Directory " : " File "}
+                        </span>
                         <span style={{ bg: theme.backgroundElement, fg: theme.textMuted }}> {file.filename} </span>
                       </text>
                     )