* fix(web): harden, polish and optimize the web UI per the September 2026 audit Works through docs/archive/WEB_UI_AUDIT_2026-09.md (health 8/20). Implementation integrity (P0) - app.css now defines every utility class the templates and JS use, including .hidden, so the ~145 JS show/hide toggles work. Button reset, and base component rules (.btn, .form-control) wrapped in :where() so utility classes on the same element win. New static-audit test fails when a used utility class has no rule. Accessibility - Focus rings render (the old ring rule referenced undefined variables); one :focus-visible outline everywhere; skip link; labelled nav landmarks. - Shared dialog helper (js/utils/dialog.js): role/aria-modal, focus trap, Escape, focus return, applied to every modal. - Named icon-only buttons and labelled ~70 form fields. - Toasts announced once; errors persist >= 10s; one showNotification. - Captive WiFi page: live region, timeouts, dark mode, 16px inputs. Performance (Pi Zero 2 W) - SSE streams and tab timers pause when hidden or off-tab; the display stream only runs while a preview is visible. app-shell.js deferred. - Widget scripts served as one versioned bundle (/assets/widgets.js): 52 -> 21 script tags, 66 -> 35 requests on first load. - Stdlib gzip fallback when flask-compress is missing: first-load JS/CSS 1358 KB -> 291 KB on the wire. SSE untouched. Theming and responsive - File managers, form fields and Fonts upload on theme tokens; bare inputs themed in dark mode; no more white surfaces. - No horizontal overflow at 375px on any tab; 44px touch targets on coarse pointers; reduced-motion respected; header title truncates. Co-Authored-By: Claude Opus 5 <noreply@anthropic.com> * fix(web): clear Codacy findings on #568 - json-file-manager: focus-trap releases kept in a Map (no dynamic property access or delete; no value-returning forEach callback) - notification / schedule-picker: style and day-label lookups via Map - app.js: move the pending-queue assignment out of the expression - diff_viewer / error_handler: named function declarations instead of arrow consts No behavior change. Co-Authored-By: Claude Opus 5 <noreply@anthropic.com> * test: check the OAuth widget ships in the widget bundle base.html no longer tags widget scripts one by one; they load through /assets/widgets.js. Assert the page requests the bundle and the bundle contains google-oauth.js, which is what the test was protecting. Co-Authored-By: Claude Opus 5 <noreply@anthropic.com> * fix(web): address review feedback on #568 - widget bundle version fingerprints every file (name, mtime_ns, size) - gzip fallback appends Accept-Encoding to an existing Vary header - dialog helper: releasing a non-top dialog no longer moves focus out of the dialog the user is in - labels: file-upload targets its file input; fallback config fields get label for/id pairs; native color input has a fallback name - utility audit also reads class names inside bound :class expressions Co-Authored-By: Claude Opus 5 <noreply@anthropic.com> * fix(web): give the native color-picker input an accessible name CodeRabbit flagged this on PR #568 as an outside-diff finding (never posted inline, so it was missed in the round of fixes that addressed the other 6 review comments). The <input type="color"> only carried a title attribute; screen readers don't reliably announce title, and there's no other label naming the control when showHexInput is false. Co-Authored-By: Claude Opus 5 <noreply@anthropic.com> * fix(web): clear Codacy findings in app-shell.js - drop the unused catch binding on the SSE JSON parse - move the pending-notification queue assignment out of the expression No behavior change. Co-Authored-By: Claude Opus 5 <noreply@anthropic.com> * fix(web): contain plugin widgets/ dir and bound style-editor retries From CodeRabbit review on #568 (code that arrived with the main merge): - serve_plugin_widget resolves widgets/ with resolve_under before resolving the manifest script under it, so a symlinked widgets directory can't become the containment base (CWE-22). New test. - style-editor init stops polling after ~10s when the widget never registers and leaves the plain fallback fields in place. Co-Authored-By: Claude Opus 5 <noreply@anthropic.com> --------- Co-authored-by: Claude Opus 5 <noreply@anthropic.com>
LED Matrix Web Interface V3
Modern, production web interface for controlling the LED Matrix display.
Overview
This directory contains the active V3 web interface with the following features:
- Real-time display preview via Server-Sent Events (SSE)
- Plugin management and configuration
- System monitoring and logs
- Modern, responsive UI
- RESTful API
Directory Structure
web_interface/
├── app.py # Main Flask application
├── start.py # Startup script
├── run.sh # Shell runner script
├── requirements.txt # Python dependencies
├── blueprints/ # Flask blueprints
│ ├── api_v3.py # API endpoints
│ └── pages_v3.py # Page routes
├── templates/ # HTML templates
│ └── v3/
│ ├── base.html
│ ├── index.html
│ └── partials/
└── static/ # CSS/JS assets
└── v3/
├── app.css
├── app.js
├── manifest.json # PWA manifest
├── plugins_manager.js
├── icons/ # PWA / touch icons
├── js/ # Alpine, htmx, app shell, widgets, utils
└── vendor/ # codemirror, fontawesome
Running the Web Interface
Standalone (Development)
From the project root:
python3 web_interface/start.py
Or using the shell script:
./web_interface/run.sh
As a Service (Production)
The web interface can run as a systemd service that starts automatically based on the web_display_autostart configuration setting:
sudo systemctl start ledmatrix-web
sudo systemctl enable ledmatrix-web # Start on boot
Accessing the Interface
Once running, access the web interface at:
- Local: http://localhost:5000
- Network: http://:5000
Configuration
The web interface reads configuration from:
config/config.json- Main configurationconfig/config_secrets.json- API keys and secrets
API Documentation
The V3 API is mounted at /api/v3/ (app.py:144). For the complete
list and request/response formats, see
docs/REST_API_REFERENCE.md. Quick
reference for the most common endpoints:
Configuration
GET /api/v3/config/main- Get main configurationPOST /api/v3/config/main- Save main configurationGET /api/v3/config/secrets- Get secrets configurationPOST /api/v3/config/raw/main- Save raw main config (Config Editor)POST /api/v3/config/raw/secrets- Save raw secrets
Display & System Control
GET /api/v3/system/status- System statusPOST /api/v3/system/action- Control display (action body:start_display,stop_display,restart_display_service,restart_web_service,git_pull,reboot_system,shutdown_system,enable_autostart,disable_autostart)GET /api/v3/display/current- Current display frameGET /api/v3/display/on-demand/status- On-demand statusPOST /api/v3/display/on-demand/start- Trigger on-demand displayPOST /api/v3/display/on-demand/stop- Clear on-demand
Plugins
GET /api/v3/plugins/installed- List installed pluginsGET /api/v3/plugins/config?plugin_id=<id>- Get plugin configPOST /api/v3/plugins/config- Update plugin configurationGET /api/v3/plugins/schema?plugin_id=<id>- Get plugin schemaPOST /api/v3/plugins/toggle- Enable/disable pluginPOST /api/v3/plugins/install- Install from registryPOST /api/v3/plugins/install-from-url- Install from GitHub URLPOST /api/v3/plugins/uninstall- Uninstall pluginPOST /api/v3/plugins/update- Update plugin
Plugin Store
GET /api/v3/plugins/store/list- List available registry pluginsGET /api/v3/plugins/store/github-status- GitHub authentication statusPOST /api/v3/plugins/store/refresh- Refresh registry from GitHub
Real-time Streams (SSE)
SSE stream endpoints are defined directly on the Flask app
(app.py:607-619 — includes the CSRF exemption and rate-limit hookup
alongside the three route definitions), not on the api_v3 blueprint:
GET /api/v3/stream/stats- System statistics streamGET /api/v3/stream/display- Display preview streamGET /api/v3/stream/logs- Service logs stream
Development
When making changes to the web interface:
- Edit files in this directory
- Test changes by running
python3 web_interface/start.py - Restart the service if running:
sudo systemctl restart ledmatrix-web
Notes
- Templates and static files use the
v3/prefix to allow for future versions - The interface uses Flask blueprints for modular organization
- SSE streams provide real-time updates without polling