Add the harness, envs, per-bot models and chat attachments

- Harness: providers, model catalog synced hourly, automatic free picks,
  cooldowns, tool loop with context trimming, MCP computer tools
- Bots queue runs replies and tasks through the harness; jobs wait
  (attempt refunded) while every model is resting
- Envs: Settings > Environment, scoped general/workspace/computer,
  written to computers and redacted from tool output
- Models: Settings > Models, per-harness provider select defaulting to
  OpenRouter, and a models modal on each bot's chat (the coordinator's
  edits the defaults)
- Chat: thinking row while a reply runs, file attachments (upload,
  paste, drop) that replies read as images, audio and document text
- Fix media uploads failing after a user's first file, and private
  files being served from the public media path

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

src/schemas/bot-schema.ts

@@ -1,12 +1,29 @@
 import { z } from "zod";
+import { AppData } from "@/src/data/app-data";
 
 export const SendBotMessageRequestSchema = z.object({
     bot_id: z.coerce.number().int().positive("Pick a bot to message"),
-    text: z
-        .string()
-        .trim()
-        .min(1, "Write a message first")
-        .max(4000, "Keep messages under 4000 characters"),
-});
+    text: z.string().trim().max(4000, "Keep messages under 4000 characters").default(""),
+    media_ids: z
+        .array(z.coerce.number().int().positive())
+        .max(AppData.BotAttachmentMaxFiles, `Attach up to ${AppData.BotAttachmentMaxFiles} files`)
+        .default([]),
+}).refine((body) => body.text || body.media_ids.length, "Write a message or attach a file first");
 
 export type SendBotMessageRequest = z.infer<typeof SendBotMessageRequestSchema>;
+
+export const BotIdRequestSchema = z.object({
+    bot_id: z.coerce.number().int().positive("Pick a bot"),
+});
+
+export type BotIdRequest = z.infer<typeof BotIdRequestSchema>;
+
+export const UploadBotAttachmentRequestSchema = z.object({
+    /**
+     * The file as a base64 data URL.
+     */
+    data_url: z.string().startsWith("data:", "Send the file as a data URL"),
+    name: z.string().trim().min(1, "The file needs a name").max(255),
+});
+
+export type UploadBotAttachmentRequest = z.infer<typeof UploadBotAttachmentRequestSchema>;