Follow-up to the route swap (#1501): now that every separate page is
reachable from the H0M3 hub, the dashboard tab strip should hold only
real in-page tabs, not the "→" links out to other pages (mara: "remove
links to the pages from dashboard - only actual tabs stay here").
- dashboard.html: remove the `tab-matrix`, `tab-flow`, and `tab-logs`
`.tab-link` entries (and the stale `tab-count-flow` pill slot — the
operator inbox moved to Y3R C4LL). The dashboard strip is now SW4RM /
Y3R C4LL / SYST3M / P3RM1SS10NS / SCH3DUL3S / P33RS / ST4TS / S3TT1NGS.
- tabs.js: drop the now-dead `tab-matrix` matrix_gui_enabled gate (the
H0M3 Matrix tile is gated by home.js instead) and the obsolete
`#tab-count-flow` comment. Kept the contextual deep-links into the log
viewer (an agent's logs, a build entry's log) — those are functional
content links, not navigation chrome.
- flow.css: remove the dead `.dashboard-chrome.flow-chrome` +
`.tabbar .tab.active.tab-link` rules — the flow page uses a slim
back-link header, not the dashboard tabbar, and `.tab-link` no longer
exists anywhere.
npm run build green (flow.css 1.8kb). No residual references.