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Review of the gate found a data-loss path it had introduced, plus two smaller scope errors. All three from CodeRabbit on #508. **The stash failure was load-bearing and was not treated as one.** update_plugin stashes local changes before pulling; when that stash failed or timed out it logged a warning and pulled anyway. That was harmless while nothing ever undid a pull. It is not harmless now: the gate's rollback is `git reset --hard`, which discards uncommitted tracked edits -- exactly the edits the stash existed to protect. A pull does not refuse on a dirty tree as long as the incoming commit touches other files, so the sequence completed silently: pull succeeds, gate refuses, reset takes the user's work with it. update_plugin now returns before pulling unless the tree was already clean or was successfully stashed. Refusing costs an update in a case that had already gone wrong; the alternative costs data. That also makes `--hard` safe by construction in _gate_pulled_commit, and its comment now says so rather than observing it in passing. Pinned by test_a_failed_stash_stops_the_update_before_pulling, which writes a local edit, forces the stash to fail, and asserts both that HEAD did not move and that the edit is still on disk. Verified it bites: with the new guard removed the file comes back as `class P: pass`, the edit gone. **_HAS_GIT could take the module down instead of skipping it.** With no git on PATH, subprocess.run raises FileNotFoundError, and this runs at import time -- before skipif can act, so the whole file errors rather than skipping. Now catches OSError. **The doc overclaimed the gate's reach.** It said the floor is enforced on "every route that installs or updates" while the same passage notes install_from_url is ungated. Both spots now scope the claim to registry-managed installs and the two supported update paths, and name the sideload exception. Full suite 3720 passed, 6 skipped. Co-Authored-By: Claude Opus 5 (1M context) <noreply@anthropic.com> Claude-Session: https://claude.ai/code/session_014RRtqXDCnvnY6EQwhT5CV9
LEDMatrix Documentation
This directory contains guides, references, and architectural notes for the LEDMatrix project. If you are setting up a Pi for the first time, start with the project root README — it covers hardware, OS imaging, and the one-shot installer. The pages here go deeper.
I'm a new user
- GETTING_STARTED.md — first-time setup walkthrough
- WEB_INTERFACE_GUIDE.md — using the web UI
- PLUGIN_STORE_GUIDE.md — installing and managing plugins
- WIFI_NETWORK_SETUP.md — WiFi and AP-mode setup
- TROUBLESHOOTING.md — common issues and fixes
- SSH_UNAVAILABLE_AFTER_INSTALL.md — recovering SSH after install
- CONFIG_DEBUGGING.md — diagnosing config problems
- LOW_MEMORY_BOARDS.md — Pi Zero 2 W / 3B+ / 1GB Pi 4 memory limits
I want to write a plugin
Start here:
- PLUGIN_DEVELOPMENT_GUIDE.md — end-to-end workflow
- PLUGIN_QUICK_REFERENCE.md — cheat sheet
- PLUGIN_API_REFERENCE.md — display, cache, and plugin-manager APIs
- PLUGIN_ERROR_HANDLING.md — error-handling patterns
- DEV_PREVIEW.md — preview plugins on your dev machine without a Pi
- EMULATOR_SETUP_GUIDE.md — running the matrix emulator
Going deeper:
- ADVANCED_PLUGIN_DEVELOPMENT.md — advanced patterns
- PLUGIN_ARCHITECTURE_SPEC.md — original plugin-system design spec (historical; see its banner for what has drifted)
- PLUGIN_DEPENDENCY_GUIDE.md / PLUGIN_DEPENDENCY_TROUBLESHOOTING.md
- PLUGIN_WEB_UI_ACTIONS.md (+ example JSON)
- PLUGIN_CUSTOM_ICONS.md
- PLUGIN_REGISTRY_SETUP_GUIDE.md (+ registry template)
- STARLARK_APPS_GUIDE.md — Starlark-based mini-apps
- widget-guide.md — widget development
- ADAPTIVE_LAYOUT.md — render legibly on any panel size (opt-in font/layout scaling)
- plugin-safety-harness.md — test a plugin across every screen and matrix size
Configuring plugins
- PLUGIN_CONFIG_QUICK_START.md — minimal config you need
- PLUGIN_CONFIGURATION_GUIDE.md — schema design
- PLUGIN_CONFIGURATION_TABS.md — multi-tab UI configs
- PLUGIN_CONFIG_ARCHITECTURE.md — how the config system works
- PLUGIN_CONFIG_CORE_PROPERTIES.md — properties every plugin honors
Advanced features
- ADVANCED_FEATURES.md — Vegas scroll, on-demand display, cache management, background services, permissions
- FONT_MANAGER.md — font system
- SKIN_SYSTEM.md — skin architecture for sports scoreboards
- CREATING_SKINS.md — writing and validating a skin
Reference
- CONFIG_REFERENCE.md — every key in config.json and config_secrets.json
- REST_API_REFERENCE.md — all web-interface HTTP endpoints
- PLUGIN_API_REFERENCE.md — Python APIs available to plugins
- DEVELOPER_QUICK_REFERENCE.md — common dev tasks
- PLUGIN_IMPLEMENTATION_SUMMARY.md — what the plugin system actually does
Contributing to LEDMatrix itself
- DEVELOPMENT.md — environment setup
- HOW_TO_RUN_TESTS.md — running the test suite
- MULTI_ROOT_WORKSPACE_SETUP.md — multi-repo workspace
- MIGRATION_GUIDE.md — breaking changes between releases
- SPORTS_UNIFICATION.md — how the sports scoreboard base classes are organized
Archive
docs/archive/ holds older guides that have been superseded or describe
features that have been removed. They are kept for historical context and
git history but should not be relied on.
Contributing to the docs
- Markdown only, professional tone, minimal emoji.
- Prefer adding to an existing page over creating a new one. If you add a new page, link it from this index in the section it belongs to.
- If a page becomes obsolete, move it to
docs/archive/rather than deleting it, so links don't rot. - Keep examples runnable — paths, commands, and config keys here should match what's actually in the repo.