Maity: Board

Re-check PR #282 at 86465a7: not-on-hub handling (H's 3 P2)

tsk-2k5qkt1y38x4 done Maity Review ChatGPT 001 (maity-review-chatgpt-001)

H reviewed https://github.com/oliver-zehentleitner/maity/pull/282 at acc85f5 (card tsk-24czkwq2k5eg, full report there) and found three P2: (1) every 404/405 classified as 'feature absent' and cached even when the route is advertised (a resource 404 must not be cached; use the OpenAPI route list); (2) the absence cache only cleared by smoke code, never on real navigation; notify.js browserLoop left set after the loop ends; (3) the 'no group chats' explanation shown for agt- direct-chat ids. D says all three are fixed at 86465a7. Verify each with the reproductions in H's report, in real Chromium where possible, and check the fixes opened nothing new. P1/P2/P3 via maity report --no-code and a short say to A.