Keep searchable text only in knowledgebases

Every bot file was chunked into bot_file_chunks and embedded into
bot_file_vectors, and uploads kept their extracted text in
media.text_content, which together took most of the database. Bot
files are no longer indexed: bots find them by name or path with
list_files and read them with read_file, and search_files, ingest_file
and the files modal's re-read button are gone. Attachments keep no
text; a reply reads a document from the file. Only knowledgebase
documents keep text.

The schema drops both tables and the ingest columns. At boot,
dropStoredFileText removes what older versions stored (file jobs,
upload text) and vacuums once much of the database is free. The
media:prune-text script it replaces is removed.

Co-Authored-By: Claude Opus 5.5 <[email protected]>

src/functions/backend/db/bot-files/store-chat-attachments.ts

@@ -1,7 +1,6 @@
 import mediaFilePath from "@/src/utils/media-file-path";
 import type { BUN_SQLITE_COBBLE_MEDIA } from "@/db/types/db";
 import { BotUploadFolder } from "@/src/dict/bot-file-dict";
-import enqueueFileIngest from "@/src/file-ingest/enqueue-file-ingest";
 import { logError } from "@/src/functions/backend/logger";
 import recordBotFile from "./record-bot-file";
 
@@ -14,7 +13,7 @@ type Params = {
 
 /**
  * Copies the files the user attached to a message into the conversation's
- * folder (`uploads/<yyyy-mm>/<name>`), so they stay searchable after the
+ * folder (`uploads/<yyyy-mm>/<name>`), so they stay findable after the
  * message scrolls away and a later run can find them. Best effort: a
  * failure is logged, never shown, and the message still goes out.
  */
@@ -48,8 +47,8 @@ export default async function storeChatAttachments({
              * The text stays on the message's own `bot-attachment` row,
              * where a reply reads it. Copying it onto the file's row kept
              * the same text twice and left the copy behind when the
-             * upload was pruned; ingestion re-reads the bytes once
-             * through `extractBotFileText` instead.
+             * upload was pruned; a bot reads the bytes with `read_file`
+             * instead.
              */
             const saved = await recordBotFile({
                 bot_id,
@@ -63,8 +62,6 @@ export default async function storeChatAttachments({
                 mime_type: file.mime_type || undefined,
                 user_id,
             });
-
-            await enqueueFileIngest({ file_id: saved.id! });
         } catch (error) {
             await logError({
                 title: `A chat attachment couldn't be saved to the bot's files`,