Server: send initial frame immediately after metadata for api_input
sources so the client gets the current buffer (fallback color if
inactive) instead of never receiving a frame when push_generation
stays at 0.
Frontend: clear all test modal canvases on open to prevent stale
pixels from previous sessions. Reset FPS timestamps after metadata
so the initial bootstrap frame isn't counted in the FPS chart.
Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>
- KC test WS now acquires from LiveStreamManager instead of creating its
own DXGI duplicator, eliminating capture contention with running LED targets
- Tree-nav refactored to compact dropdown on click with outside-click dismiss
(closes on click outside the trigger+panel, not just outside the container)
- KC target card badge (e.g. "Daylight Cycle") no longer wastes empty space
Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>
- Settings modal split into 3 tabs: General, Backup, MQTT
- Log viewer moved to full-screen overlay with compact toolbar
- External URL setting: API endpoints + UI for configuring server domain
used in webhook/WS URLs instead of auto-detected local IP
- Sources tab tree restructured: Picture Source (Screen Capture/Static/
Processed sub-groups), Color Strip, Audio, Utility
- TreeNav extended to support nested groups (3-level tree)
- Audio tab split into Sources and Templates sub-tabs
- Fix audio template test: device picker now filters by engine type
(was showing WASAPI indices for sounddevice templates)
- Audio template test device picker disabled during active test
- Rename "Input Source" to "Source" in CSS test preview (en/ru/zh)
- Fix i18n: log filter/level items deferred to avoid stale t() calls
Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>
New features:
- Override composite blend mode: per-pixel alpha from brightness
(black=transparent, bright=opaque). Ideal for API input over effects.
- API input test preview FPS chart uses shared createFpsSparkline
(same look as target card charts)
Fixes:
- Fix api_input source not surviving server restart: from_dict was
still passing removed led_count field to constructor
- Fix composite layer brightness/processing selectors not aligned:
labels get fixed width, selects fill remaining space
- Fix CSPT input selector showing in non-CSPT CSS test mode
- Fix test modal LED/FPS controls showing for api_input sources
- Server only sends test WS frames when api_input push_generation changes
Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>
API Input CSS rework:
- Remove led_count field from ApiInputColorStripSource (always auto-sizes)
- Add segment-based payload: solid, per_pixel, gradient modes
- Segments applied in order (last wins on overlap), auto-grow buffer
- Backward compatible: legacy {"colors": [...]} still works
- Pydantic validation: mode-specific field requirements
Test preview:
- Enable test preview button on api_input cards
- Hide LED/FPS controls for api_input (sender controls those)
- Show input source selector for all CSS tests (preselected)
- FPS sparkline chart using shared createFpsSparkline (same as target cards)
- Server only sends frames when push_generation changes (no idle frames)
HAOS integration:
- New light.py: ApiInputLight entity per api_input source (RGB + brightness)
- turn_on pushes solid segment, turn_off pushes fallback color
- Register wled_screen_controller.set_leds service for arbitrary segments
- New services.yaml with field definitions
- Coordinator: push_colors() and push_segments() methods
- Platform.LIGHT added to platforms list
Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>
Backend: send border_width in WS metadata and frame_dims (width, height)
as a separate JSON message on first JPEG frame.
Frontend: render semi-transparent green overlay rectangles on each active
edge showing the sampling region depth, plus a small px label. Overlays
are proportionally sized based on border_width relative to frame dimensions.
Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>
Key Colors test:
- New WS endpoint for live KC target test streaming (replaces REST polling)
- Auto-connect on lightbox open, auto-disconnect on close
- Uses same FPS/preview_width as CSS source test (no separate controls)
- Removed FPS selector, start/stop toggle, and updateAutoRefreshButton
Device cards:
- Fix full re-render on every poll caused by relative "Last seen" time in HTML
- Last seen label now patched in-place via data attribute (like FPS metrics)
- Remove overlay visualization button from LED target cards
Sync clocks:
- Fix card not updating start/stop icon: invalidate cache before reload
Other:
- Tab indicator respects bg-anim toggle (hidden when dynamic background off)
- Camera backend icon grid uses SVG icons instead of emoji
- Frontend context rule: no emoji in IconSelect items
Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>
Backend:
- VideoCaptureSource dataclass with url, loop, playback_speed, start/end_time,
resolution_limit, clock_id, target_fps fields
- VideoCaptureStream: OpenCV decode thread with frame-accurate sync clock seeking,
loop, trim range, resolution downscale at decode time
- YouTube URL resolution via yt-dlp (auto-detects youtube.com, youtu.be, shorts)
- Thumbnail extraction from first frame (GET /picture-sources/{id}/thumbnail)
- Video test WS preview: streams JPEG frames with elapsed/frame_count metadata
- Run video_stream.start() in executor to avoid blocking event loop during
yt-dlp resolution
- Full CRUD via existing picture source API (stream_type: "video")
- Wired into LiveStreamManager for target streaming
Frontend:
- Video icon (film) in picture source type map and graph node subtypes
- Video tree nav node in Sources tab with CardSection
- Video fields in stream add/edit modal: URL, loop toggle, playback speed slider,
target FPS, start/end trim times, resolution limit
- Video card rendering with URL, FPS, loop, speed badges
- Clone data support for video sources
- i18n keys for video source in en/ru/zh
Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>
- Add Color Strip Processing Template (CSPT) entity: reusable filter chains
for 1D LED strip postprocessing (backend, storage, API, frontend CRUD)
- Add "processed" color strip source type that wraps another CSS source and
applies a CSPT filter chain (dataclass, stream, schema, modal, cards)
- Add Reverse filter for strip LED order reversal
- Add CSPT and processed CSS nodes/edges to visual graph editor
- Add CSPT test preview WS endpoint with input source selection
- Add device settings CSPT template selector (add + edit modals with hints)
- Use icon grids for palette quantization preset selector in filter lists
- Use EntitySelect for template references and test modal source selectors
- Fix filters.css_filter_template.desc missing localization
- Fix icon grid cell height inequality (grid-auto-rows: 1fr)
- Rename "Processed" subtab to "Processing Templates"
- Localize all new strings (en/ru/zh)
Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>
- Add horizontal axis with tick marks and LED index labels below strip
and composite preview canvases (first/last labels edge-aligned)
- Show actual/calibration LED count label on picture-based composite
layers (e.g. "25/934")
- Display warning icon in orange when LED counts don't match
- Send is_picture and calibration_led_count in composite layer_infos
Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>
- Unify minimap/toolbar/legend drag+dock into shared _makeDraggable() helper
- Persist legend visibility and position, add active state to toggle buttons
- Show custom colors only on graph cards (entity defaults remain in legend)
- Replace emoji overlay buttons with SVG path icons
- Fix stale is_running blocking target start (auto-clear if task is done)
- Resolve device/target IDs to names in conflict error messages
- Hot-switch LED device on running target via async stop-swap-start cycle
- Compact automation dashboard cards and fix time_of_day localization
- Inline CSS source pill on target cards to save vertical space
Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>
New device providers: ESP-NOW, Philips Hue, USB HID, SPI Direct,
Razer Chroma SDK, and SteelSeries GameSense — each with client,
provider, full backend registration, schemas, routes, and frontend
support including discovery, form fields, and i18n.
Add IconSelect grids for SPI LED chipset selector and GameSense
peripheral type selector with new Lucide icons (cpu, keyboard,
mouse, headphones).
Replace emoji graph overlay buttons (eye, bell) with proper SVG
path icons for consistent cross-platform rendering.
Fix connection overlay causing horizontal scroll by adding
overflow: hidden.
Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>
- Refactor all device providers to use explicit kwargs.get() instead of
fragile pop-then-passthrough (fixes WLED target start failing with
unexpected dmx_protocol kwarg)
- Add process-wide camera index registry to prevent concurrent opens of
the same physical camera which crashes the DSHOW backend on Windows
- Fix OutputTargetResponse validation error when brightness_value_source_id
is None (coerce to empty string in response and from_dict)
- Replace native <input type="color"> in graph editor with the custom
color picker popover used throughout the app, positioned via
getScreenCTM() inside an absolute overlay on .graph-container
Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>
Full-stack implementation of DMX output for stage lighting and LED controllers:
- DMXClient with Art-Net and sACN packet builders, multi-universe splitting
- DMXDeviceProvider with manual_led_count capability and URL parsing
- Device store, API schemas, routes wired with dmx_protocol/start_universe/start_channel
- Frontend: add/settings modals with DMX fields, IconSelect protocol picker
- Fix add device modal dirty check on type change (re-snapshot after switch)
- i18n keys for DMX in en/ru/zh locales
Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>
- Add FPS control (1-60, default 20) to test preview modal next to LED count
- Server accepts fps query param, controls frame send interval
- Single Apply icon button (✓) applies both LED count and FPS
- FPS control stays visible for picture sources (LED count hidden)
- Fix composite sub-stream consumer ID collision: use unique instance ID
to prevent old WebSocket release from killing new connection's streams
Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>
- Bump capture preview resolution from 480×360 to 960×540 (HD)
- Increase preview FPS from 2 to ~12 FPS (AUX_INTERVAL 0.5→0.08)
- Add accent-color border on screen rect only (not LED edges) via ::after
- Use dynamic aspect-ratio from decoded JPEG frames instead of fixed height
- Widen modal to 900px for picture sources
- Move frontend conventions from CLAUDE.md to contexts/frontend.md
Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>
- Stream live JPEG frames from picture sources into the test preview rectangle
- Add composite layer brightness display via value source streaming
- Fix missing id on css-test-rect-screen element that prevented frame display
- Preload images before swapping to eliminate flicker on frame updates
- Increase preview resolution to 480x360 and add subtle outline
- Prevent auto-focus on name field in modals on touch devices (desktopFocus)
- Fix performance chart padding, color picker clipping, and subtitle offset
- Add calibration-style ticks and source name/LED count to rectangle preview
Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>
- Composite sources show per-layer strip canvases with composite result on top
- Server sends composite wire format with per-layer RGB data
- LED count is configurable via input field, persisted in localStorage
- Notification sources show a bell fire button on the strip preview
- Composite with notification layers shows per-layer fire buttons
- Fixed stale WS frame bug with generation counter and unique consumer IDs
- Modal width is now fixed at 700px to prevent layout jumps
- Target card composite layers now use same-height canvases
Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>
New WebSocket endpoint streams real-time RGB frames from any CSS source.
Generic sources show a horizontal LED strip canvas. Picture sources show
a rectangle with per-edge canvases matching the calibration layout.
Server computes exact output indices per edge (offset + reverse + CW/CCW)
so the frontend renders edges in correct visual orientation.
Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>
Adds a refresh icon button on each device card that triggers an immediate
health check via POST /devices/{id}/ping, showing online status with
latency or offline result as a toast notification.
Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>
Polls Windows notifications via winsdk UserNotificationListener API
and fires matching notification CSS streams with os_listener=True.
Includes history API endpoint for tracking captured notifications.
Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>
- Add optional brightness_source_id per composite layer using ValueStreamManager
- Use EntitySelect for composite layer source and brightness dropdowns
- Use IconSelect for composite blend mode and notification filter mode
- Add i18n keys for blend mode and filter mode descriptions (en/ru/zh)
Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>
POST /api/v1/system/auto-backup/trigger creates a backup on demand
and returns the created file info (filename, size, timestamp).
Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>
New value source that outputs brightness (0-1) based on the daylight
color LUT, computing BT.601 luminance from the simulated sky color.
Supports real-time wall-clock mode or configurable simulation speed.
Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>
Broadcast entity_changed and device_health_changed events via the event
bus so the frontend can auto-refresh cards without polling. Adds
exponential backoff on WS reconnect.
Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>
Full-stack implementation of two new color strip source types:
- Daylight: simulates day/night color cycle with real-time or speed-based mode, latitude support
- Candlelight: multi-candle fire simulation with Gaussian falloff, layered-sine flicker, warm color shift
Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>
- Add `tags: List[str]` field to all 13 entity types (devices, output targets,
CSS sources, picture sources, audio sources, value sources, sync clocks,
automations, scene presets, capture/audio/PP/pattern templates)
- Update all stores, schemas, and route handlers for tag CRUD
- Add GET /api/v1/tags endpoint aggregating unique tags across all stores
- Create TagInput component with chip display, autocomplete dropdown,
keyboard navigation, and API-backed suggestions
- Display tag chips on all entity cards (searchable via existing text filter)
- Add tag input to all 14 editor modals with dirty check support
- Add CSS styles and i18n keys (en/ru/zh) for tag UI
- Also includes code review fixes: thread safety, perf, store dedup
Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>
- Portal IconSelect popups to document.body with position:fixed to prevent
clipping by modal overflow-y:auto
- Replace custom scene selectors in automation editor with EntitySelect
command-palette pickers (main scene + fallback scene)
- Add IconSelect grid for automation deactivation mode (none/revert/fallback)
- Add IconSelect grid for automation condition type and match type
- Replace mapped zone source dropdowns with EntitySelect pickers
- Replace scene target selector with EntityPalette.pick() pattern
- Remove effect palette preview bar from CSS editor
- Remove sensitivity badge from audio color strip source cards
- Clean up unused scene-selector CSS and scene-target-add-row CSS
- Add locale keys for all new UI elements across en/ru/zh
Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>
Rename all Python modules, classes, API endpoints, config keys, frontend
fetch URLs, and Home Assistant integration URLs from picture-targets to
output-targets. Store loads both new and legacy JSON keys for backward
compatibility with existing data files.
Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>
Autorestore fixes:
- Snapshot WLED state before connect() mutates it (lor, AudioReactive)
- Gate restore on auto_shutdown setting (was unconditional)
- Remove misleading auto_restore capability from serial provider
- Default auto_shutdown to false for all new devices
Protocol badge fixes:
- Show correct protocol per device type (OpenRGB SDK, MQTT, WebSocket)
- Was showing "Serial" for all non-WLED devices
Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>
New source_type "notification" fires one-shot visual effects (flash, pulse, sweep)
triggered via POST webhook. Designed as a composite layer for overlay on persistent
sources. Includes app color mapping, whitelist/blacklist filtering, and auto-sizing.
Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>
- Add clone_preset() to ScenePresetStore with deep copy of target snapshots
- Add POST /scene-presets/{id}/clone API endpoint
- Add clone button to scene preset cards in Automations tab
- Add i18n keys for clone feedback in all 3 locales
- Add TODO items for dashboard stats collapse and protocol badge review
Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>
- Add `startup` automation condition type that activates on server boot,
replacing the per-target `auto_start` flag
- Remove `auto_start` field from targets, scene snapshots, and all API layers
- Remove auto-start UI section and star buttons from dashboard and target cards
- Remove `color` field from scene presets (backend, API, modal, frontend)
- Add card color support to scene preset cards (color picker + border style)
- Show localStorage-backed card colors on all dashboard cards (targets,
automations, sync clocks, scene presets)
- Fix card color picker updating wrong card when duplicate data attributes
exist by using closest() from picker wrapper instead of global querySelector
- Add sync clocks step to Sources tab tutorial
- Bump SW cache v9 → v10
Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>
Speed is now exclusively controlled via sync clocks — CSS sources no longer
carry their own speed/cycle_speed fields. Streams default to 1.0× when no
clock is assigned. Also fixes false-positive dirty check on the device
settings modal (array reference comparison) and converts several frontend
modules to use DataCache for consistent API response caching.
Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>
Introduces Synchronization Clocks — shared, controllable time bases
that CSS sources can optionally reference for synchronized animation.
Backend:
- New SyncClock dataclass, JSON store, Pydantic schemas, REST API
- Runtime clock with thread-safe pause/resume/reset and speed control
- Ref-counted runtime pool with eager creation for API control
- clock_id field on all ColorStripSource types
- Stream integration: clock time/speed replaces source-local values
- Paused clock skips rendering (saves CPU + stops frame pushes)
- Included in backup/restore via STORE_MAP
Frontend:
- Sync Clocks tab in Streams section with cards and controls
- Clock dropdown in CSS editor (hidden speed slider when clock set)
- Clock crosslink badge on CSS source cards (replaces speed badge)
- Targets tab uses DataCache for picture/audio sources and sync clocks
Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>
- Zone picker UI in device add/settings modals with per-zone checkbox selection
- Combined mode: pixels distributed sequentially across zones
- Separate mode: full effect resampled independently to each zone via linear interpolation
- Per-zone LED preview in target cards: one canvas strip per zone with hover overlay labels
- Zone badges on device cards enriched with actual LED counts from OpenRGB API
- Fix stale led_count by using device_led_count discovered at connect time
Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>
Per-automation webhook URL with auto-generated 128-bit hex token.
External services (Home Assistant, IFTTT, curl) can POST to
/api/v1/webhooks/{token} with {"action": "activate"|"deactivate"}
to control automation state — no API key required (token is auth).
Backend: WebhookCondition model, engine state tracking with
immediate evaluation, webhook endpoint, schema/route updates.
Frontend: webhook option in condition editor, URL display with
copy button, card badge, i18n for en/ru/zh.
Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>
- New CameraEngine using OpenCV VideoCapture for webcam capture
- HAS_OWN_DISPLAYS class attribute on CaptureEngine base to distinguish
engines with their own device lists from desktop monitor engines
- Display picker renders device list for cameras/scrcpy, spatial layout
for desktop monitors
- Engine-aware display label formatting (camera name vs monitor index)
- Stream modal properly loads engine-specific displays on template change,
edit, and clone
- Camera backend config rendered as dropdown (auto/dshow/msmf/v4l2)
- Remove offline label from device cards (healthcheck indicator suffices)
Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>
- Add noise gate filter: suppresses per-pixel color flicker below threshold
using stateful frame comparison with pre-allocated int16 buffers
- Add palette quantization filter: maps pixels to nearest color in preset
or custom hex palette, using chunked processing for memory efficiency
- Add "string" option type to filter schema system (base, API, frontend)
- Replace up/down buttons with pointer-event drag-and-drop in PP template
filter list, with clone/placeholder feedback and modal auto-scroll
- Add frame_interpolation locale keys (was missing from all 3 locales)
- Update TODO.md: mark completed processing pipeline items
Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>
- WebSocket test: move w,h capture to after PP filter application
so downscaler effect is reflected in reported resolution
- HTTP test: read actual thumbnail dimensions from filtered image
instead of using pre-computed values
Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>
- New WS device type: broadcaster singleton + LEDClient that sends binary
frames to connected WebSocket clients during processing
- FastAPI WS endpoint at /api/v1/devices/{device_id}/ws with token auth
- Frontend: add/edit WS devices, connection URL with copy button in settings
- Add health_check and auto_restore capabilities to WLED and Serial providers;
hide health interval and auto-restore toggle for devices without them
- Skip health check loop for virtual devices (Mock, MQTT, WS) — set always-online
- Copy buttons and labels for API CSS push endpoints (REST POST / WebSocket)
- Hide mock:// and ws:// URLs in target device dropdown
- Hide filter textbox when card section is collapsed (cs-collapsed CSS class)
Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>
- Remove DeviceBrightnessSnapshot and AutomationSnapshot from scene data model
- Simplify capture_current_snapshot and apply_scene_state to targets only
- Remove device/automation dependencies from scene preset API routes
- Add target selector (combobox + add/remove) to scene capture modal
- Fix stale profiles reference bug in scene_preset_store recapture
- Update automation engine call sites for simplified scene functions
- Sync scene presets cache between automations and scene-presets modules
Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>
Rename the "profiles" entity to "automations" throughout the entire
codebase for clarity. Updates Python models, storage, API routes/schemas,
engine, frontend JS modules, HTML templates, CSS classes, i18n keys
(en/ru/zh), dashboard, tutorials, and command palette.
Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>
Profiles now activate scene presets instead of individual targets, with
configurable deactivation behavior (none/revert/fallback scene). The
target checklist UI is replaced by a searchable combobox for scene
selection that scales well with many scenes.
Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>
Feature 1 — Profile Conditions: time-of-day, system idle (Win32
GetLastInputInfo), and display state (GUID_CONSOLE_DISPLAY_STATE)
condition types for automatic profile activation.
Feature 2 — Scene Presets: snapshot/restore system that captures target
running states, device brightness, and profile enables. Server-side
capture with 5-step activation order. Dedicated Scenes tab with
CardSection-based card grid, command palette integration, and dashboard
quick-activate section.
Feature 3 — MQTT Integration: MQTTService singleton with aiomqtt,
MQTTLEDClient device provider for pixel output, MQTT profile condition
type with topic/payload matching, and frontend support for MQTT device
type and condition editor.
Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>
Stability:
- Fix race condition: set _is_running before create_task in target processors
- Await probe task after cancel in wled_target_processor
- Replace raw fetch() with fetchWithAuth() across devices, kc-targets, pattern-templates
- Add try/catch to showTestTemplateModal in streams.js
- Wrap blocking I/O in asyncio.to_thread (picture_targets, system restore)
- Fix dashboardStopAll to filter only running targets with ok guard
Performance:
- Vectorize fire effect spark loop with numpy in effect_stream
- Vectorize FFT band binning with cumulative sum in analysis.py
- Rewrite pixel_processor with vectorized numpy (accept ndarray or list)
- Add httpx.AsyncClient connection pooling with lock in wled_provider
- Optimize _send_pixels_http to avoid np.hstack allocation in wled_client
- Mutate chart arrays in-place in dashboard, perf-charts, targets
- Merge dashboard 2-batch fetch into single Promise.all
- Hoist frame_time outside loop in mapped_stream
Usability:
- Fix health check interval load/save in device settings
- Swap confirm modal button classes (No=secondary, Yes=danger)
- Add aria-modal to audio/value source editors, fix close button aria-labels
- Add modal footer close button to settings modal
- Add dedicated calibration LED count validation error keys
i18n:
- Replace ~50 hardcoded English strings with t() calls across 12 JS files
- Add 50 new keys to en.json, ru.json, zh.json
- Localize inline toasts in index.html with window.t fallback
- Add data-i18n to command palette footer
- Add localization policy to CLAUDE.md
Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>
