Add dynamic_keys support to PageConfig — a contract-based plugin
system where any executable outputs a JSON array of KeyConfig to stdout.
The daemon runs the generator on a configurable interval and renders
the keys dynamically on the Stream Deck.
Core changes:
- config: DynamicKeyGen struct (command/script, interval, timeout, max_keys)
- config: full validation for dynamic_keys fields
- action: execDynamicKeys() with safe JSON parsing (stderr logged separately,
env vars STREAMDECK_KEY_COUNT / STREAMDECK_CONFIG_DIR)
- page: activeKeys() merges static + dynamic keys (static wins by index)
- page: startDynamicKeys / stopDynamicKeys lifecycle, per-page results cache
- page: rerenderActivePage() with deadlock-safe lock ordering
- daemon: event handler uses activeKeys() for dynamic key actions
Web UI:
- GET /api/pages returns effective_keys (merged static + cached dynamic)
- app.js: gridKeys uses effective_keys when available
- app.js: guard against editing dynamic keys through the UI
- index.html: "⚡ dynamic" badge + effective key count in page switcher
- polls /api/pages every 10s to keep the UI in sync
Image rendering:
- loadImage: gift.ResizeToFill instead of gift.Resize (preserves aspect
ratio, crops to fill — no more stretched cover art)
Example & docs:
- config.example.json: games page with dynamic_keys + back button
- README.md: comprehensive Dynamic Key Generators section (architecture
diagram, config reference, generator contract, merge behavior,
env vars, error handling, Python + Shell examples, tips)
- Multi-action system: each key supports multiple actions with different triggers
(tap, long_press, double_tap, hold_start, hold_end)
- GestureEngine: timing-based gesture detection with configurable thresholds
- New config types: KeyAction, TimingConfig, DisplayOutput
- Display output now supports JSON format (text/background/text_color) and
first-line-as-hex-color format for dynamic key backgrounds
- Display background colors are reflected in the web UI on the grid
- renderUnicodeText/renderUnicodeTextOnImage accept custom text color (fg)
- Global font setting (medium/regular) in Settings UI
- PageManager.defaultFont used as fallback for per-key font
- Alpine.js bundled locally (no CDN dependency)
- Web UI: action tabs (Tap/Long Press/Double Tap/Hold), unified More section
with appearance + display settings, gesture timing sliders in Settings
- Grid: subtle action type icons in top-left corner matching display indicator style
- Backward compatible: old config 'action' field auto-migrated to 'actions' array
- M+ 1m font files in assets/ for reference
- Updated config.example.json and README with all new features
