mara: "reuse the popup component for the login, the floating separate
panels should be one card" — the old markup's .agent-status-overlay >
* rule boxed every direct-child <p>/<form> separately, a faithful port
of app.js's el().append()-per-line but not what a hand-authored
component should do. Wraps each state's content in one .login-card
div instead, styled to match Dropdown's .ui-dropdown (@hive/shared)
background/border/radius/shadow values exactly, so this reads as the
same popup family as every other floating surface in the app rather
than a one-off. Not the Dropdown component itself — its options.map
render is menu-item-shaped, not a fit for a login form + output pane.
agent.css's .agent-status-overlay > * rule is untouched (app.js's
still-live markup depends on it verbatim until the index.html
cutover) — .login-card coexists with it rather than editing it,
correctly overriding on equal specificity since main.css loads after
agent.css.
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