3 Commits

Include renames

Author	SHA1	Message	Date
ChuckandClaude Opus 5.5	3967a6cffc	fix(security): re-harden root sudo helpers; installer fixes; ARCHITECTURE and PERMISSIONS docs (#640) ... * docs: add ARCHITECTURE and PERMISSIONS guides ARCHITECTURE.md maps the processes, the state the display and web services share through the cache, the display loop, the plugin system, the web UI and the update path, with links into the code and a where-to-start table. PERMISSIONS.md lists who owns what after install, both sudoers files (and why iptables is not granted), the polkit rule, and which scripts/fix_perms script to run as which user. Both are linked from the docs index, along with the MQTT bridge README and src/common/README.md. Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com> * docs: correct stale setup, service and troubleshooting claims - README: quick actions run systemctl on ledmatrix.service (run.py), not display_controller.py; use_short_date_format has no effect; the installer uses system pip with --break-system-packages, not a venv. - CONFIG_DEBUGGING: LEDMATRIX_DEBUG must be "true"; logs are in journald. - GETTING_STARTED, WEB_INTERFACE_GUIDE, TROUBLESHOOTING: enabling a plugin, plugin settings, brightness and Vegas settings apply without a restart; matrix hardware settings still need one. - TROUBLESHOOTING: install dependencies with sudo so the root service sees them; point permission problems at PERMISSIONS.md instead of a project-wide chown. - ADVANCED_FEATURES: real BackgroundDataService stats keys; Vegas hooks return VegasDisplayMode and None falls back to capture; cache files are 0660; fix_web_permissions.sh runs as the web user and does not touch sudoers. - STARLARK_APPS_GUIDE: only the linux-arm64 pixlet binary is downloaded. - HOW_TO_RUN_TESTS: test class examples that exist. - CLAUDE.md: PluginStoreManager, plugin_dirs.py, monorepo installs via the Trees API with ZIP fallback, requirements.txt is optional. Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com> * docs: mark deprecated plugin APIs and state manifest fields once Methods @deprecated("3.7.0") (the set pinned in test_deprecation.py) were shown as current API in the quick reference, API reference, advanced guide, development guide and FONT_MANAGER. Each is now marked deprecated with its replacement. FONT_MANAGER is rewritten around the current API; the override editor is gone and override methods are deprecated. Required manifest fields were stated three different ways. The API reference now has one section: the 7 schema-required fields, the 4 the store refuses without, class_name for the loader, and the 8 to set. The other guides link to it. Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com> * docs: document every src/common module and every widget - src/common/README.md covered 7 of 17 modules. It now has a table of all of them (purpose, whether plugins import it, release to floor on), a short entry each, and logging advice that matches the code. - SPORTS_UNIFICATION listed two shared modules and called sports_helpers the first; it now lists all six. - The widgets README lists all 28 registered widgets plus the support files, and absorbs the parts that only docs/widget-guide.md had (x-options.labels, x-advanced, x-display hidden, plugin-file-manager). docs/widget-guide.md is now a pointer to it. Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com> * fix(security): fix_web_permissions.sh re-hardens the root sudo helpers The script chowns the whole project to the web user. That included scripts/fix_perms/safe_plugin_rm.sh and safe_pip_install.sh -- the two helpers /etc/sudoers.d/ledmatrix_web lets the web user run as root -- so running it turned both into a root shell for whoever can edit them. It also re-grouped config_secrets.json away from ledmatrix. After the chown it now does what first_time_install.sh's Steps 11 and 11.1 do: helpers back to root:root 755, and config_secrets.json back to the web unit's User=:ledmatrix 640. Each step is non-fatal and prints the manual command if it fails. Also fixes what the script and its docs claimed: it never configured sudoers, its closing hint pointed at ./configure_web_sudo.sh (wrong path), and the README and ADVANCED_FEATURES.md said to run it with sudo, which it refuses. Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com> * fix(security): validate and harden every sudoers drop-in the scripts write configure_wifi_permissions.sh copied its rules into /etc/sudoers.d/ledmatrix_wifi without `visudo -c`. A malformed drop-in makes sudo refuse every command for every user, which on a headless Pi leaves no way back in. It now checks first and leaves the installed file alone when the rules do not parse, as the other two writers do. (It already used mktemp, so that part of the review did not apply.) It also grants the two literal commands wifi_manager.py runs for NetworkManager's shared-mode dnsmasq drop-in -- `cp /tmp/ledmatrix-nm-dnsmasq.conf .../dnsmasq-shared.d/ledmatrix-captive.conf` and `rm -f` of that file. The directory's mkdir was granted, the file was not. Both are pinned in test_sudo_allowlist_covers_calls.py. configure_web_sudo.sh wrote its rules to /tmp/ledmatrix_web_sudoers_$$, a predictable name in a world-writable directory; it now uses mktemp with an EXIT trap, as first_time_install.sh does. It sets mode 440 on the installed file instead of leaving the temp file's mode, and finds visudo in /usr/sbin when that is not on the user's PATH, which skipped the check silently. Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com> * fix(install): escape the project path in the DNS-fix and MQTT unit renderers install_dns_fix.sh and install_mqtt_bridge.sh substituted __PROJECT_ROOT_DIR__ with the raw path, while the other three renderers go through sed_escape_replacement from lib_systemd_render.sh. A checkout under a path containing `&`, `\` or `|` rendered a corrupted unit from these two only. Both now source the helper and use it, and a test checks that every placeholder substitution in scripts/install uses an escaped value. Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com> * fix(install): stop the installer scripts reporting things that are not true - first_time_install.sh printed "Password: ledmatrix123" for the setup access point. wifi_manager creates it as an open network ("No password" on the panel), so it now says so. - Step 10.1 printed "✓ WiFi management permissions configured" straight after its own failure message; install_wifi_monitor.sh printed "✓ Package installation completed" after a failed apt install. The tick now only follows success. - Step 7 printed "Web dependencies already installed ... in Step 5" in the one branch that runs because Step 5 did not install them, then created .web_deps_installed on that basis. It now warns and leaves the marker off so the next run retries, as the comment below it intends. - check_system_compatibility.sh called Debian 12 Bookworm "full compatibility confirmed" while first_time_install.sh refuses anything but Debian 13. Bookworm, older Debian and non-Debian systems are now errors. Its counters used ((X++)), which under `set -e` exits the script at the first warning or error (the expression is 0), so the check never reached its summary on any system with one. - configure_web_sudo.sh and configure_wifi_permissions.sh finished by testing `sudo -n test -f ...` and `sudo -n nmcli device status`, neither of which is granted, so they always reported a failure. They now ask `sudo -n -l` about commands the new rules do grant, which checks the rule without running anything. Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com> * fix(install): print the completion summary before rebooting With -y -- and so for every one-shot `curl | bash` install, which always passes -y -- first_time_install.sh ran `reboot` about 180 lines before its "Installation Complete / Web UI Access" summary. reboot returns at once, so the summary printed while the Pi was going down and the SSH session usually dropped before the web UI address could be read. The reboot block moves, unchanged, to the very end of the script. The interactive prompt now also follows the summary. Because the summary now runs before the -y reboot, its one command that could fail under `set -Eeuo pipefail` (the SSID lookup, when nmcli reports a connected device but no active network line) gets `|| true`; a missing SSID was already handled as "SSID unknown". one-shot-install.sh prints its "Next steps" after the installer returns, by which time the reboot is under way, so it now says so, and README's Quick Install mentions the automatic reboot. Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com> * chore(scripts): correct wrong comments and messages, drop dead code No behaviour change except the output text noted below. - 2775 is setgid, not the sticky bit (first_time_install.sh Step 3.1, fix_plugin_permissions.sh), and root needs no "PWM hardware access" to plugin files. - The 777 comments in first_time_install.sh Step 3's fallback and fix_assets_permissions.sh said root needs it to write. Root ignores mode bits; the comments now say what 777 actually opens. The 777 itself is unchanged. - apt_remove ends in `|| true`, so Step 12's "Some packages could not be removed" branch could never run; it is gone and the helper stays non-fatal. - detect_web_service_user's comment named Step 8 for the web unit (install_service.sh installs it in Step 7.5) and now says which branch actually runs. - Step 5 described an "already installed" check that does not exist; the ACTUAL_USER comment described the re-exec backwards. - on_error printed a literal "\n" before "Common fixes:". - Dead code: one-shot-install.sh's uncalled fix_tmp_permissions, LEDMATRIX_ELEVATED=1 (never read) on the sudo re-exec, and configure_web_sudo.sh's unused PYTHON_PATH, which also made a missing python3 fatal for rules that never mention it. - start_display.sh / stop_display.sh said "for user: <you>"; the service runs as root. Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com> * refactor(fix_perms): fix_cache_permissions.sh uses setup_cache.sh's model There were two models for /var/cache/ledmatrix. setup_cache.sh (the installer's Step 2) and install_web_service.sh share it through the ledmatrix group: root:ledmatrix, 2775, files 660, which is also what DiskCache relies on to give files the directory's group. fix_cache_permissions.sh instead made it 777 and re-grouped it to the invoking user's group, undoing that. It now runs setup_cache.sh for /var/cache/ledmatrix and keeps its own handling of ~/.ledmatrix_cache. Dropped: /var/cache/ledmatrix/ placeholder_logos (nothing reads it) and the checks against the `daemon` user (no service runs as daemon). Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com> * ci: pin actions/checkout in the Claude workflows, drop template comments claude.yml and claude-code-review.yml used actions/checkout@v4 while test.yml and release-version-check.yml pin the v4.2.2 commit SHA; they now pin the same SHA. The commented-out starter-template settings (prompt, claude_args, paths, author filter) are removed. Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com> * docs(scripts): index every script and list removal candidates New scripts/README.md gives one line per top-level script and scripts directory, marked keep, dev-only or diagnostic, and lists the eight scripts nothing in the repo refers to as candidates for removal (kept for now). The install, utils and dev READMEs now list the files they were missing. Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com> * test: tighten two checks that mutation testing showed were too loose - The wifi sudoers check matched `visudo -c -f "$TEMP_SUDOERS"` in the error report too, so replacing the check with `if false` still passed. It now requires the command as the condition. - The summary test never had the setup access point up, so reinstating the bogus "Password: ledmatrix123" line went unnoticed. A case with hostapd active now checks the AP is described as open. Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com> * docs(permissions): describe the repaired fix_perms scripts and new WiFi grants Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com> * docs(changelog): docs-scripts Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com> --------- Co-authored-by: Claude Opus 5.5 <noreply@anthropic.com>	2026-09-24 17:31:41 -04:00
ChuckandClaude Opus 5	5137e86d16	feat(tools): MQTT bridge and Pixlet editor, ported onto the api_v3 split (#554) ... * feat(tools): manage the MQTT bridge and Pixlet editor from the Tools tab PR #544's change, ported onto the api_v3 package split (#553). Identical behaviour; only the placement of the new code differs. The original added 508 lines to web_interface/blueprints/api_v3.py, which #553 deletes, so every hunk of it would conflict irreconcilably. Ported by AST: 26 new top-level items sorted to where the split puts each kind -- __init__.py 2 imports, 11 constants, 7 helpers starlark.py 4 routes (/starlark/editor/{apps,status,start,stop}) misc.py 2 routes (/integrations/mqtt-bridge{,/config}) Everything outside api_v3.py -- the Tools partial, the installer scripts, the JS tests -- applied unchanged. Routes: 111 from the split plus these 6 = 117, and the url-map snapshot is regenerated to match, which is exactly what test_api_v3_url_map.py is designed to make you do when routes are added. Full Python suite: 4,278 passed, 68 skipped, 0 failed. The JS tests this PR ships could not be run here -- node is not installed on this machine -- so test/js/dom/test_tools_sections.js is unverified. Co-Authored-By: Claude Opus 5 (1M context) <noreply@anthropic.com> Claude-Session: https://claude.ai/code/session_014RRtqXDCnvnY6EQwhT5CV9 * fix(starlark): don't crash the pixlet editor's start/stop routes, and honor an operator-set PIXLET_EDITOR_HOST The AST-based port of #544 onto the api_v3 package split dropped `time` from starlark.py's import list. start_pixlet_editor() and stop_pixlet_editor() both call time.time()/time.sleep() directly, so every start (NameError building `state['started_at']`) and every stop that has to wait out the EXIT trap crashed with a 500. No test caught it because the route's own tests mock subprocess.Popen but never actually invoked it before now. Also carries over #544's later fix that this port branched before: env['PIXLET_EDITOR_HOST'] = '0.0.0.0' unconditionally overrode an operator who had already pinned PIXLET_EDITOR_HOST to loopback, forcing the unauthenticated `pixlet serve` process onto the LAN regardless (CodeQL CWE-1188). Switched to env.setdefault(...), same as api_v3.starlark.py's siblings already do for _pkg-owned names. Both fixes route the shared _pkg.time reference the rest of the package's route modules already use for anything a test might need to patch, rather than a bare `import time` local to this file. Ported the existing regression test from #544 (TestPixletEditorHostDefaultsButDoesNotOverride) onto this branch's module layout (web_interface.blueprints.api_v3.starlark instead of the old monolithic api_v3 module), which is what caught the NameError. Full suite: 4330 passed, 62 skipped, 2 failed -- identical on this branch and on origin/main (missing tzdata package breaks two timezone-alias tests in test_onboarding_checklist.py, unrelated to this change). Co-Authored-By: Claude Opus 5 <noreply@anthropic.com> * fix(api-v3): clear the six lint errors this rebase introduced All six were introduced by rebasing this branch onto the merged blueprint split, not by the split itself. Confirmed by diffing pyflakes output against main with line numbers normalised -- everything else it reports is present on main too and is the package's deliberate re-export pattern. starlark.py used _STARLARK_APPS_DIR three times without importing it (F821). The rebase resolved an import-list conflict as a union of both sides, and that symbol was on neither side of the conflict hunk, so it was silently lost. It is defined in __init__.py and is now imported like its neighbours. This was the only one of the six that would fail at runtime rather than merely lint. __init__.py imported contextlib twice (F811): the cherry-pick added one next to the existing import. Removed the duplicate; the original at line 19 is used. __init__.py imported signal purely to re-export it to starlark.py, so pyflakes saw it as unused (F401). signal is stdlib and does not need routing through the blueprint package, so starlark.py imports it directly and __init__.py no longer does. contextlib stays re-exported because this module genuinely uses it. _read_mqtt_bridge_config()'s local `config` shadowed the `config` submodule this module imports at the bottom for its route side effects (F811). Renamed to `settings`, with a comment saying why, since the name is otherwise the obvious one to reach for. Verified: pyflakes now reports nothing on this branch that main does not, the package imports, all nine route modules load, and 117 routes register, matching the pinned URL-map snapshot. Co-Authored-By: Claude Opus 5 <noreply@anthropic.com> * fix(api-v3): reject MQTT bridge bodies the endpoint cannot apply Two CodeRabbit findings on the bridge settings endpoint, both of which returned 200 while doing something other than what the caller asked. `request.get_json(silent=True) or {}` turned a missing or unparseable body -- and the JSON literals null, [] and false -- into an empty dict, which then satisfied the isinstance(data, dict) guard on the very next line. The guard was there to reject exactly those bodies. Dropping the `or {}` lets None fail it. The same `or {}` on /errors/clear is left alone: its docstring documents the body as optional, so an absent body legitimately means "use the defaults". The difference is that saving settings has nothing sensible to do with no body. `if data.get('clear_password'):` accepted any truthy value, and the string "false" is truthy in Python -- so a client echoing the field back as a string wiped a password it meant to keep. Now coerced through the package's existing _coerce_to_bool, which already maps 'true'/'on'/'1'/'yes' and nothing else. test_mqtt_bridge_config_endpoint.py covers both: five unusable body shapes plus a missing body, and clear_password across truthy and falsy spellings. Verified against the unfixed code -- reverting the body guard fails 5, reverting the coercion fails 3. Not changed here: CodeRabbit also asks this endpoint to reject MQTT credentials when TLS is off (CWE-319). That is a policy decision about the feature rather than a defect -- unencrypted MQTT on a trusted LAN is common and often deliberate -- so it is raised on the PR for a maintainer call instead. Co-Authored-By: Claude Opus 5 <noreply@anthropic.com> * fix: work through the remaining review findings on the editor and bridge allow_insecure_mqtt (CWE-319, requested): a password with TLS disabled crosses the network in cleartext. Refused now rather than merely warned about -- but refused, not forbidden, because unencrypted MQTT on a trusted LAN is a normal deliberate setup. allow_insecure_mqtt is the explicit acknowledgement, defaults false, and is coerced like the other booleans so the string "false" cannot switch the guard off. starlark.py:796 -- the supported service runs Flask threaded, so two start requests could each see running=False, each launch an editor, and the second state write replace the first PID, orphaning a process that holds the display down with nothing recording it. The check-launch-write sequence now takes a module-level lock. starlark.py:848 -- if the state write failed the route returned success with an editor running and no PID recorded: status and stop both reported no session while the display stayed down until the timeout expired. It now terminates the process group and returns an error. starlark.py:890 -- SIGKILL gives the script's EXIT trap no chance to run, so nothing hands the display back, yet the response said "the display is restarting". After an escalation the display is now restarted explicitly, and a failure to do so returns an error naming the manual step instead of a success. pixlet_config_editor.sh:184 -- find_pixlet supports Darwin but macOS ships no timeout(1); GNU coreutils installs it as gtimeout. Resolved up front so the failure lands before the display is stopped rather than after. pixlet_config_editor.sh:154 -- wildcard, loopback and an explicit interface address are three cases, not two. Collapsing the last two printed a URL saying "localhost" whenever PIXLET_EDITOR_HOST named a LAN address. tools.html:1254 -- escHtml does not encode single quotes, and the app id was interpolated into an inline onclick="startPixletEditor('...')", so a directory containing an apostrophe could break out of the JS string and run script. The handler binds with addEventListener and reads the id from dataset, where it is only ever parsed as an HTML attribute. Tests: test_mqtt_bridge_config_endpoint.py grows to 23 cases covering the opt-in in both directions. The tools DOM suite gains three guards asserting the edit buttons carry no inline onclick and pass the id via dataset -- those need jsdom and did not run here, so CI verifies them. Co-Authored-By: Claude Opus 5 <noreply@anthropic.com> * fix(api-v3): log the traceback on the editor state-write failure The 848 fix answers 500 when the session state cannot be written, and logged that at error level -- but without exc_info, so the traceback never reached the log. test_web_error_detail.py guards exactly this: a handler returning 5xx must write an error-level record *with* the traceback and return the sanitized detail, because checking that merely something was logged is too weak. Caught by Core unit tests on the previous commit, not locally: the guard parses every module under web_interface/blueprints/api_v3 as one source, so it only fires once the whole package is read together. Co-Authored-By: Claude Opus 5 <noreply@anthropic.com> --------- Co-authored-by: Claude Opus 5 (1M context) <noreply@anthropic.com>	2026-09-11 11:32:12 -04:00
ChuckandClaude Opus 5	e23f1f45d3	feat(starlark,on-demand): the third-party fixes worth taking, plus a Home Assistant MQTT bridge (#538) ... * feat(starlark,on-demand): the third-party fixes worth taking, plus an MQTT bridge Analysis of ant456/ledmatrix-fixes-repo, a third-party collection of patches and services built while running this project on Starlark apps under MQTT control. Its patches are whole-file copies taken against an older tree, so applying them as written would revert #523's frame pacing, #534's display() bool returns and the GitHub token masking in plugins_manager.js. Three of its claimed fixes are already in main, and its api_v3 Starlark routes are #535's. What follows is the rest -- verified against current code, and reimplemented where the patch's approach did not hold up. **On-demand display.** `pinned` reached the controller from the API, was stored on it and republished in the status payload, but never narrowed the rotation -- a pinned request still cycled every mode its plugin owns. Right for a sports plugin, whose modes are views of one subject; wrong for a plugin whose modes are unrelated, which is every Starlark app. Now honoured, and it survives a restart. Restarting while on-demand was active loaded *only* the on-demand plugin, so normal rotation had nothing to return to for the life of the process -- and a restart mid-session is routine, since that is how an update is applied. The panel came back cycling one plugin's modes with no way out but clearing the cache by hand. Every enabled plugin loads now; on-demand still resumes on its saved mode. Stop requests are exempt from the duplicate guards on purpose, so that a second click stops a mode a race left running -- which means consuming the mailbox is the only thing that ends one. It was never consumed, so the same stop was re-read and re-processed on every poll, forever. Both paths now share one compare-before-delete helper. **Starlark rendering.** `extract_schema` parsed the source with a regex, which can only see option lists written out literally: an app whose dropdown is filled from a live API call inside `get_schema()` came back empty, and the config form offered nothing to pick. Now runs `pixlet schema`, which executes the app, and falls back to the parser when Pixlet is absent, too old for the subcommand, or the app fails to run. The third-party patch replaced the parser outright and hardcoded /usr/local/bin/pixlet; this keeps the fallback and the binary search. A `|` in a config value was dropped by a shell-metacharacter filter, though the command is a list with no shell involved -- and apps do use it as a separator inside one value. The key went missing silently and the app rendered its own "not configured" screen with nothing to say why. And a 0-byte render was reported as success: Pixlet exits 0 and writes nothing when an app has no content, which read downstream as a working app drawing a black panel. **Starlark display.** `display()` ignored the mode it was called with, so a specific app could not be addressed. It now accepts `display_mode` -- which is the whole mechanism, since the controller inspects the signature before passing it. Found while there: `_select_next_app` ran only while `current_app` was unset, so with several apps installed the first was picked once and shown forever while the rest were rendered on schedule and never displayed. And `enable_scrolling` was missing, so multi-frame apps were called once per rotation slot and never advanced past frame one. **GET /api/v3/display/modes.** Every mode that can be requested on-demand, with the plugin that owns it. Nothing exposed this, so anything driving the display from outside the web UI read each plugin's manifest.json off disk and reimplemented PluginManager's fallbacks. It also triggers discovery, which is otherwise lazy and normally happens because a person opened the dashboard. **integrations/mqtt_bridge.** Home Assistant control over MQTT Discovery: a mode select, a stop button, power, brightness. Rewritten against the API rather than the filesystem, so it needs no read access to config.json and cannot drift from the web UI. paho-mqtt 2.x VERSION2, TLS, an availability topic that is also the last will, and secrets from the environment. **Two opt-in extras.** A DNS single-request unit, for glibc's parallel A/AAAA lookup stalling ~5s per name on routers that answer only the A query -- which makes any plugin calling an external API slow and Starlark apps, which have a render timeout, fail outright. And a Pixlet config editor: a script you run and Ctrl+C rather than the third-party version's always-on unauthenticated Flask service, since it stops the display for the length of a session. Neither is installed by default. Long Starlark app names now wrap instead of overflowing their card. 115 new tests across 5 files. Also unblocked test_starlark_display_contract.py, which was silently skipping wherever fcntl is absent. Whole suite: no new failures against main. Co-Authored-By: Claude Opus 5 <noreply@anthropic.com> * fix(mqtt_bridge): the five issues Codacy flagged on this branch All in the new bridge, all real: * requests floor was 2.31.0, which carries CVE-2024-35195, CVE-2024-47081 and CVE-2026-25645. Raised to >=2.33.0,<3.0.0, which is what the project's own requirements.txt already pins. * `import time` was never used. * `"mqtt_password": None` in DEFAULTS read as a hardcoded credential. It is the "no password configured" default; marked nosec B105, the convention used elsewhere in the repo. Also dropped an unused `build_app` from the display-modes test imports. Co-Authored-By: Claude Opus 5 <noreply@anthropic.com> * fix: the review findings on this PR Nine of CodeRabbit's ten, plus the CodeQL alert. The tenth is wrong and is answered below. **One bad config section blanked the whole mode list.** `/display/modes` read `full_config.get(plugin_id, {}).get('enabled')`, so a non-dict under a plugin id -- a shape DisplayController already guards, so it happens -- raised AttributeError mid-loop and answered 500 with no modes at all. Every MQTT bridge entity is built from that list. Now skipped with a warning. **The DNS scripts reported success they had not earned.** Three separate paths: `resolvconf -u` failing was swallowed by `|| true`; the systemd-resolved branch exited 0 without applying anything, so the oneshot unit recorded success while the workaround was inactive; and the installer's `|| echo` turned a failed start into "installation complete." with exit 0. All three now fail loudly. `single-request` is a glibc resolv.conf option with no resolved.conf equivalent, so on those hosts the honest answer is that it cannot be applied. A NetworkManager-generated resolv.conf is regenerated on connection changes, not only at boot, and the unit is oneshot with RemainAfterExit -- so the option can vanish mid-boot with nothing to put it back. Now detected and stated plainly rather than implied to be permanent. **`Before=` does not order a manual restart.** It only orders units already in the same transaction, so `systemctl restart ledmatrix` could bypass the fix. install_dns_fix.sh now writes a ledmatrix.service drop-in with Wants= and After=. Wants=, not Requires=: a DNS workaround failing should not stop the display. **The Pixlet editor's `--lan` is gone.** `pixlet serve` has no authentication, and a printed warning is not access control. Loopback only, with the SSH port-forward in the header where the flag used to be documented -- SSH does the authenticating and nothing is left listening. **The MQTT example config now defaults to TLS** on 8883. The installer copies it verbatim, and without TLS the broker password and every command cross the network in cleartext. A plaintext broker is still supported and documented, and the bridge warns once at startup when a password is configured without TLS. **Not taken: "the upstream Pixlet CLI has no `schema` subcommand."** Upstream tidbyt/pixlet has none, but `scripts/download_pixlet.sh` installs `tronbyt/pixlet`, whose `cmd/schema.go` is `schema [PATH]` -> JSON on stdout, built on `runtime.NewAppletFromPath`, so it does execute `get_schema()`. That is exactly what extract_schema_via_pixlet calls. A binary without the subcommand exits non-zero and falls back to the source parser, which is already covered by a test. **CodeQL stack-trace exposure: not taken either.** I removed `details` first and that broke test_web_error_detail.py::test_no_api_v3_handler_discards_its_exception, which enforces `describe_exception` across all ~75 handlers -- written because a device with failing storage answered "see logs for details" from the log viewer itself. describe_exception redacts credentials; the trade-off is the project's and is already made. Restored, with the reasoning in a comment. 11 new tests. Whole suite: no new failures against main, 4127 passed. Co-Authored-By: Claude Opus 5 <noreply@anthropic.com> --------- Co-authored-by: Claude Opus 5 <noreply@anthropic.com>	2026-09-08 08:34:52 -04:00