Route services.Session errors through the same classifier Connection
uses so RequestExtend/WaitExtend return a structured ClientError with a
clean localized short message instead of the raw daemon error. Extract
the shared errorClassifier into errors.go, and fall back to the gRPC
status code when no message substring matches, since the daemon now
forwards a clean desc without the English marker text.
Shorten over-long godoc/inline comments across the client/ui tray and
services code: drop narrative restatement, legacy-Fyne tangents, and text
already evident from signatures and names. Keep only the non-obvious why
(concurrency/lock ordering, platform quirks, ordering constraints, the
profile-switch state table). No code changes.
Adds an end-to-end SSO session-extension feature: the management server
publishes per-peer session deadlines on every Login/Sync, a new
ExtendAuthSession RPC refreshes the deadline using a fresh JWT without
tearing down the tunnel, and the daemon tracks the deadline locally so
the UI can fire a T-10min warning toast with an interactive "Extend now"
action.
Zoltán Papp