test(stick): fallback seen to fail -- no fixed screen, R does nothing (#92, 5.2) [skip ci]

Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>
Claude-Session: https://claude.ai/code/session_01GE3SDvQn5EoxdGufk84zz2

docs/v4.0.0/plans/2026-10-29-stick-5-proxy-zuse-and-real-zuse.md

@@ -363,7 +363,7 @@ Tasks 1-3 accepted and merged (#159, master 594d2f93); #155 merged with them.
 
 **Task 5, the fixed screen** (increments, as Task 4's):
 - [x] 5.1 the first failing test: mode `fallback` (a mint, then the data stick booted alone: the four lines, no prompt, keys dropped; her stick added: the prompt; pulled: the screen again; R with no stick: the plug-in line, any key stops it)
-- [ ] 5.2 run `fallback` before any kernel change: FAIL expected (the proxy with a real key stays headless, no screen)
+- [x] 5.2 run `fallback` before any kernel change: FAIL -- no fixed screen, R does nothing (logs/20261110-062351, -062543); her stick added, the prompt, typed keys dropped, the session ended on its pull all PASS already
 - [ ] 5.3 the fixed screen in `sk_v4_identity_wait()`: shown while `g_proxy_fallback`; R runs `sk_v4_mint_zuse()`; every other key dropped
 - [ ] 5.4 her stick pulled: the fixed screen again (not headless)
 - [ ] 5.5 the system stick pulled while hers is in: hers let go first (the chain's tail)