fix(coding-agent): kept computer worker graph off CLI startup

- The PR #7205 merge left cli.ts statically importing startComputerWorker,
  dragging the computer worker graph (and pi_natives via the pi-utils
  barrel) into normal CLI startup; --version died under --no-addons and
  dotenv loaded before profile bootstrap. worker-entry is now a
  self-starting side-effect module dispatched via dynamic import like
  every other worker selector, and utils/clipboard.ts imports the mime
  constant from its submodule instead of the barrel.
- Repointed the clipboard test spy at @oh-my-pi/pi-natives/clipboard —
  spying the barrel never intercepted the subpath the code imports, so
  the real native bridge ran (X11 timeouts on headless CI).
- Refreshed the pinned HTML export template digest and the scout gate
  phrase the system-prompt rewrite changed.

packages/coding-agent/src/utils/clipboard.ts

@@ -3,8 +3,8 @@ import {
 	copyToClipboard as nativeCopyToClipboard,
 	readImageFromClipboard as nativeReadImageFromClipboard,
 } from "@oh-my-pi/pi-natives/clipboard";
-import { SUPPORTED_IMAGE_MIME_TYPES } from "@oh-my-pi/pi-utils";
 import * as logger from "@oh-my-pi/pi-utils/logger";
+import { SUPPORTED_IMAGE_MIME_TYPES } from "@oh-my-pi/pi-utils/mime";
 import MAC_FILE_URL_SCRIPT from "./mac-file-urls.applescript" with { type: "text" };
 
 type SpawnCaptureOptions = { input?: string; timeoutMs?: number };