chore: drop obsolete scripts and a stale dev dependency, make knip report clean

- Nine one-off scripts from January and February that nothing references:
  three Ralph wizard drivers that click the start-screen button removed in
  1.50 (against the production port, with a personal case name), a respawn
  monitor with a hardcoded session id, link-detection experiments for
  patterns that no longer exist, and two screenshot and data helpers.
- @types/uuid: uuid 14 ships its own types and TypeScript already
  resolves them from the package.
- config/knip.json now describes the workspace layout it runs in (its
  top-level entry and project keys were being ignored), names the manual
  scripts as entries, lists the system binaries tests shell out to, and
  honours @knipignore. `npm run knip` reports nothing; CLAUDE.md says so.
- Two more unused tap helpers in the mobile test toolkit.
- Docs that pointed at files which no longer exist: the browser testing
  guide (four deleted test files), the orchestrator panel's file name, two
  spawn modules in the Ralph guide, the respawn mock utilities.

Co-Authored-By: Claude Fable 5.2 <noreply@anthropic.com>

src/config/cli-registry/profiles.ts

@@ -76,7 +76,11 @@ export const SETENV_PROFILE_NAMES = [
 export type LauncherProfileName = (typeof LAUNCHER_PROFILE_NAMES)[number];
 export type SetenvProfileName = (typeof SETENV_PROFILE_NAMES)[number];
 
-/** True when `name` is a predictive-echo profile this build actually implements. */
+/**
+ * True when `name` is a predictive-echo profile this build actually implements.
+ * Nothing calls it yet; it stays beside the registry it reads.
+ * @knipignore
+ */
 export function isKnownPredictProfile(name: string | undefined): boolean {
   return name !== undefined && Object.prototype.hasOwnProperty.call(PREDICT_PROFILES, name);
 }