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minstrel/android
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feat(android): adopt a running UPnP session + tighten cast recovery/anti-stickiness
Three related improvements to UPnP/Sonos session handling, on top of the
WiFi-lock + drop-suppression fixes.

1. Adopt a running session instead of clear+reload (the headline).
   Selecting a renderer always did removeAllTracksFromQueue + full reload --
   a jarring restart if the speaker was already playing our queue (e.g. after
   the phone got disconnected but the autonomous Sonos kept going). selectUpnp
   now probes the renderer first; if it's mid-playback on the same track id at
   the same queue index, we ATTACH in place: sync the local cursor to its
   position, wire ActiveUpnpHolder, start polling -- no clear, no reload, and
   skip/seek immediately drive its live queue. Falls through to clear+reload
   when it isn't our queue. New PlayerController.moveCursorTo aligns the local
   cursor without auto-playing.

2. Discovery expiry + selection revert (anti-stickiness). upsertRoute only
   ever added, so a powered-off renderer lingered in the picker forever and
   could pin a stale selection. Stamp lastSeen per route; after the picker's
   active M-SEARCH scan, prune routes that didn't re-announce. A collector
   reverts the selection to the phone when the selected route leaves discovery
   while we're not actively casting -- so a later play never targets a ghost.
   Pruning is tied to picker-open scans only (no background timer -> no row
   flicker).

3. Reconcile immediately on network recovery. When NetworkStatus flips back to
   Healthy while a route is active, nudge an immediate poll instead of waiting
   up to POLL_INTERVAL_MS -- the held session re-confirms the renderer in one
   round-trip.

Verified (read-only): the tap-play-onto-dead-route fallback still fires when
the phone's network is Healthy (the poll-loop drop path is unchanged for that
case); the drop-suppression gate only holds during phone-side outages, where a
local fallback couldn't play either.

Co-Authored-By: Claude Opus 4.8 (1M context) <noreply@anthropic.com>
2026-06-12 21:20:26 -04:00
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