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/cron/index.ts

@@ -1,6 +1,7 @@
 import bunext from "@moduletrace/bunext";
 import cronHeartbeat from "./heartbeat";
 import pruneBotsQueue from "./prune-bots-queue";
+import cronSyncHarnessModels from "./sync-harness-models";
 import registerCronJob from "./register-cron-job";
 
 export default function cron() {
@@ -22,4 +23,11 @@ export default function cron() {
         schedule: "@daily",
         task: pruneBotsQueue,
     });
+
+    registerCronJob({
+        title: "sync-harness-models",
+        schedule: "@hourly",
+        task: cronSyncHarnessModels,
+        run_on_start: true,
+    });
 }

src/cron/sync-harness-models/index.ts

@@ -0,0 +1,24 @@
+import bunext from "@moduletrace/bunext";
+import syncAllHarnessModels from "@/src/functions/backend/db/harness/sync-all-harness-models";
+
+/**
+ * Refreshes every enabled provider's model list. Free models on OpenRouter
+ * come and go, and automatic picks follow them from this list.
+ */
+export default async function cronSyncHarnessModels() {
+    const results = await syncAllHarnessModels();
+
+    for (const result of results) {
+        if (result.error) {
+            bunext.bunextLog.error(
+                `Cron: model sync for provider #${result.provider_id} failed: ${result.error}`,
+            );
+        } else {
+            bunext.bunextLog.info(
+                `Cron: provider #${result.provider_id} lists ${result.count} model(s)`,
+            );
+        }
+    }
+
+    return results;
+}