* fix(chat): surface all disconnected states in reconnect banner (issue #491)
The connection-status banner only appeared for RECONNECTING/DISCONNECTED,
so NO_NETWORK and AUTH_EXPIRED left the user staring at a silent chat with
no feedback and no way to recover — the core of the 'reconnecting is not
user-friendly' complaint.
ChatTopBanner now shows for every non-connected, non-connecting state:
- RECONNECTING: spinner + 'Reconnecting to Hermes…' (auto, no button)
- DISCONNECTED: 'Disconnected from Hermes' + Reconnect
- NO_NETWORK: 'No network connection' + Reconnect (force a retry)
- AUTH_EXPIRED: 'Session expired' + 'Sign in again' -> AuthLoginScreen
The auto-reconnect engine (backoff, network-return trigger, in-flight
message queue in HermesWsClient) is untouched — this only makes the stuck
states visible and actionable.
* fix(chat): use LocalHermesStatusColors for reconnect banner (review fix)
Per AGENTS.md, semantic status colors must come from
LocalHermesStatusColors, never MaterialTheme.colorScheme. The reconnect
banner used errorContainer/onErrorContainer directly, which is both a
semantic-color violation and inconsistent with the rest of the app
(Navigation.kt maps DISCONNECTED/NO_NETWORK/AUTH_EXPIRED -> .error;
TelegramOnboardingDialog uses .errorContainer for error surfaces).
Switch Surface bg to errorContainer and foreground (spinner, text,
button content) to error via LocalHermesStatusColors.current.
M57
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