App v0.2.26 and gateway 0.1.20

Client: seek controls, Bazarr subtitle download and cast panel in the
player; MDBList ratings strip; episode and schedule detail pages; series
pace estimate; what's new panel; install-permission onboarding step;
synced per-profile preferences; Emby outage banner.

Gateway: rebuilt admin console (one fragment per page), preference
history and restore, merged Continue Watching, Emby health probe,
subtitle selection and Bazarr download, structured request logging with
per-request identity, and embedded build version.

Co-Authored-By: Claude Opus 5 <noreply@anthropic.com>

server/.dockerignore

@@ -1,3 +1,15 @@
-.git
-*.md
+# The build context is uploaded to the Docker daemon in full before the first
+# instruction runs, so anything matched here is bandwidth and time paid on every
+# build. The gateway's source is ~1.2MB; keep it that way.
+#
+# A stray GOCACHE is the failure this file exists for. Running `go test` on
+# Windows with GOCACHE pointed inside server/ leaves several hundred megabytes
+# of hex-sharded cache here — invisible to git (it is in .gitignore) and so
+# noticed only as a deployment that suddenly takes minutes.
+.tmp-go-cache/
+.tmp-*/
 bin/
+
+.git
+.gitignore
+*.md