Castable Smart Dashboards: KGraph Card Layouts, Live Voice Dictation & Audio HUD Sync, and Zero-Sleep Roku Wallboards

flowchart LR
  subgraph Sources["1. KGraph & Live Local Sources"]
KG[".robos/kgraphs/dashboards/package.jsonld
(robos:DashboardLayout 3-Slide Deck)"]
AUD["RobOS Audio Player (:19196/eval)
Live Howler.js Track & Progress"]
VOC["RobOS Voice HUD (:19188/eval)
Live Dictation Dialogue Bubbles"]
GH["GitHub CLI & Local Git Repos
PRs, Commits, CI & Stars"]
  end

  subgraph Engine["2. Dashboard & Widget Engine"]
DE["packages/robos-lib/dashboard-engine.js
13 Composable Widget Evaluators"]
WC["<robos-dashboard>
(packages/robos-ui/robos-dashboard.js)"]
APP["RobOS Dashboards Studio (:19152)"]
  end

  subgraph Portal["3. RobOS Smart TV Portal (:19210)"]
HTML["GET /dashboard
10-Foot Auto-Rotating HTML5 Wallboard"]
API["GET /api/dashboard-cast
3-Slide JSON Feed + Live Chat History"]
MP4["GET /keepalive.mp4
160x90 H.264 + Silent AAC Stream"]
  end

  subgraph TVs["4. Living Room Smart TVs (Zero-Sleep Wallboard)"]
ROKU["Roku OS SceneGraph Channel
(slideGroup0, slideGroup1, slideGroup2 +
Muted Hardware Video Keep-Alive)"]
WEBTV["LG webOS / Samsung Tizen / Google TV
Full-Screen Ambient 1080p/4K Wallboards"]
  end

  KG --> DE
  AUD --> DE
  VOC --> DE
  GH --> DE
  DE --> WC
  WC --> APP
  WC --> HTML
  DE --> API
  Portal --> ROKU
  Portal --> WEBTV
  

A 3-Slide Wallboard Deck Built for the Living Room & War Room

Instead of cramming every engineering metric, CI pipeline, and voice transcript onto a single crowded screen, RobOS Dashboards organizes your wallboard into a synchronized 3-slide rotation deck (DEFAULT_SLIDESHOW in packages/robos-lib/dashboard-engine.js) that cycles automatically every 15–30 seconds or responds immediately to your TV remote's D-Pad:

Under the Hood: Live HUD Sync & Solving the Roku Standby / Menu-Click Problem

• Composable <robos-dashboard> & 13 Widget Evaluators: Every dashboard card in .robos/kgraphs/dashboards/package.jsonld maps to a custom element in packages/robos-ui/robos-dashboard.js (<robos-widget-git-commits>, <robos-widget-github-prs-waiting>, <robos-widget-github-repo-activity>, <robos-widget-calendar-today>, <robos-widget-audio-now-playing>, <robos-widget-voice-dictation>, <robos-widget-agent-sessions>, <robos-widget-smart-tv>, <robos-widget-smart-lights>, <robos-widget-kgraph>, <robos-widget-sprint-radar>, <robos-widget-vpn-status>, and <robos-widget-custom>).
• Live RobOS Voice Dictation Streaming (:19188/eval): When you dictate with RobOS Voice (Super+V), the floating HUD appends .dictation-bubble nodes to #chat-feed in real time. collectVoiceDictation() in packages/robos-lib/dashboard-engine.js queries the running HUD's DOM snapshot/eval port (http://127.0.0.1:19188/eval), merges persisted entries from ~/.config/robos/voice-bubbles-live.json and ~/.config/robos/voice-prompts.json, and streams the newest chats directly onto Slide 3 (`robos-voice-dictation`).
• Verified Live Audio Player State (:19196/eval): If an Electron audio player exits or pauses while its last state.json on disk still says playing: true, naive dashboards falsely show music playing. collectAudioNowPlaying() probes the live RobOS Audio Player debug endpoint (http://127.0.0.1:19196/eval) to verify both state.playing and Howler.js player.playing() before reporting PLAYING on Slide 1—automatically falling back to STOPPED when the player process is closed.
• Zero-Sound Hardware <Video> Keep-Alive for Roku OS: Keeping a Roku TV wallboard awake 24/7 exposed two firmware quirks: sending standard ECP remote keys resets the sleep timer but plays Roku's audible menu-move sound effect on every tick, whereas sending silent keypress/Lit_ characters produces no sound but is ignored by Roku OS's 20-minute Idle power-saving timer. RobOS solves both by serving a tiny 160×90 H.264 + silent AAC MP4 stream at GET /keepalive.mp4 from packages/robos-lib/tv-engine.js and binding it to a 1×1 muted (mute="true", loop="true") SceneGraph <Video id="keepAliveVideo"> node in MainScene.xml / MainScene.brs. Because the hardware media decoder sees active video playback, Roku OS suppresses screensaver and standby indefinitely with zero audio clicks.