Claude Code engine, image viewer, colour tags, checks per turn and more

- Claude Code as an engine: chats on a "claude-code/<alias>" model run through
  the claude CLI (stream-json); tool approvals go through our permission
  system. Sign in from the web UI (URL + pasted code), CLI version and update
  from Settings; the Docker image contains the CLI.
- Small models (8k context) for side tasks: input is cut to the model's
  context window; one-line chat status, "What does this do?" on approvals,
  "Plan as automation" (job draft from a chat).
- Mobile: top bar no longer widens the page, image viewer (zoom, swipe, mark
  up, use in message), jump to previous own message, message menu, time under
  every message.
- Approvals: push actions (allow/reject), "always allow in this project"
  (never for dangerous commands) with revoke.
- Per turn: changed files with diffs and rollback; project check command with
  a green/red badge and "let the agent fix it".
- Colour tags for chats in the colours of the active theme.
- Project defaults for new chats, project page (timeline), offline queue.

Tested in a throwaway container with a mock model (8k small model): 26 API
checks passed (permissions, diffs, checks, defaults, job draft, side-task
budget, Claude Code status/login URL, unsigned-in chat).

Co-Authored-By: Claude Sonnet 5.5 <noreply@anthropic.com>

web/src/components/TurnCheck.tsx

@@ -0,0 +1,43 @@
+import { useState } from "react";
+import { post } from "../api";
+import { toast } from "../dialogs";
+import { useT } from "../i18n";
+import { useStore } from "../store";
+import { Spinner } from "./Activity";
+import { Icon } from "./Icon";
+
+/** Green/red badge of the project's check (tests, build …) for one turn; output and "let the agent fix it" on click. */
+export function TurnCheck({ sessionId, messageId, canSend }: { sessionId: string; messageId: string; canSend: boolean }) {
+  const t = useT();
+  const check = useStore((s) => s.checks[sessionId]?.[messageId]);
+  const [open, setOpen] = useState(false);
+  if (!check) return null;
+  const seconds = check.duration_ms >= 1000 ? ` · ${(check.duration_ms / 1000).toFixed(check.duration_ms >= 10_000 ? 0 : 1)} s` : "";
+  const label =
+    check.status === "running" ? t("check.running") : check.status === "passed" ? t("check.passed") : check.status === "timeout" ? t("check.timeout") : t("check.failed");
+  const fix = async () => {
+    try {
+      await post(`/sessions/${sessionId}/prompt`, { text: `${t("check.fixPrompt")}\n\n\`\`\`\n${check.output}\n\`\`\`` });
+    } catch (e: any) {
+      toast(e.message);
+    }
+  };
+  return (
+    <div className="turn-check">
+      <button className={`chip check-${check.status}`} onClick={() => setOpen(!open)} aria-expanded={open} disabled={check.status === "running"}>
+        {check.status === "running" ? <Spinner small /> : <Icon name={check.status === "passed" ? "check" : "x-mark"} className="tiny" />} {label}
+        {seconds}
+      </button>
+      {open && check.status !== "running" && (
+        <div className="turn-check-body">
+          <pre className="mono">{check.output || t("check.noOutput")}</pre>
+          {check.status !== "passed" && canSend && (
+            <button className="small primary" onClick={fix}>
+              <Icon name="sparkle" /> {t("check.fix")}
+            </button>
+          )}
+        </div>
+      )}
+    </div>
+  );
+}