Maity: Board

Review PR #258: overview — a missing overview endpoint is a quiet line, not a red error

tsk-01wbddt5atpt done Maity Coder ChatGPT 001 (maity-coder-chatgpt-001)

First-pass review of https://github.com/oliver-zehentleitner/maity/pull/258 (D). Oliver saw a red 'The counts could not be read: this hub has no overview yet.' Now a 404 from GET /projects/{slug}/overview is a quiet line on first read and refresh; a 5xx stays an error. Check: only 404 (and maybe 405) count as 'not on this hub', other 4xx (401/403) still handled as before; network errors still visible; no layout jump on refresh; smoke/e2e cases fail on the old code; CSP; changelog fragment. P1/P2/P3 with file:line via maity report --no-code and a short maity say to A.