Migliora sessioni admin e rende robusto il logout web.

Aggiunge filtri/colonne (società, orari) e dettaglio leggibile; evita 422 CSRF su logout e non cancella le cover slate custom in sync prod.

Co-authored-by: Cursor <cursoragent@cursor.com>

backend/config/locales/admin.en.yml

@@ -251,9 +251,28 @@ en:
     sessions:
       index:
         title: Stream sessions
+        lead: Search by club, team, opponent or venue. Filter by status, platform, node and date range.
+        results: "Showing %{shown} of %{total}"
+        none: No sessions match these filters.
+        filters:
+          q: Search
+          q_placeholder: Club, team, opponent…
+          status: Status
+          platform: Platform
+          club: Club
+          node: Ingest node
+          from: From
+          to: To
+          any: All
+          apply: Filter
+          reset: Reset
         table:
+          club: Club
           match: Match
           status: Status
+          started: Started
+          ended: Ended
+          duration: Duration
           ingest: Ingest
           disconnects: Disconnects
           link: Link
@@ -261,19 +280,59 @@ en:
         regia: Control
       show:
         title: "Session %{id}"
+        heading: Session details
+        back: "← Back to sessions"
+        club_label: "Club:"
+        summary_title: Summary
+        timing_title: Timing
+        ingest_title: Ingest & media
+        devices_title: Devices
+        events_title: Events
+        events_none: No events recorded.
         status_label: "Status:"
         stop_button: End session
         stop_confirm: "End the broadcast? The RTMP path will be removed and the status will move to ended."
         match_label: "Match: %{team} vs %{opponent}"
         youtube_studio: YouTube Studio
         broadcast: Broadcast
+        open_replays: Open club replays
+        audio_muted: Audio muted
+        audio_on: Audio on
         ingest_node: "Ingest node:"
         rtmp_ingest: "RTMP ingest:"
-        events_title: Events
+        fields:
+          id: ID
+          club: Club
+          team: Team
+          opponent: Opponent
+          operator: Operator
+          platform: Platform
+          privacy: Privacy
+          quality: Quality
+          min_quality: Min quality
+          audio: Audio
+          created: Created
+          started: Started
+          ended: Ended
+          duration: Duration
+          disconnects: Disconnects
+          scheduled: Scheduled match
+          location: Venue
+          node: Node
+          rtmp: RTMP ingest
+          hls: HLS
+          recording: Replay
+        devices:
+          role: Role
+          network: Network
+          battery: Battery
+          bitrate: Bitrate
+          fps: FPS
+          last_seen: Last seen
         table:
           type: Type
           when: When
-          meta: Meta
+          meta: Details
       links:
         watch_title: Live link
         none: No video link available for this session.