houseplan-card/docs/TESTING.md at d2bec266ed2c2c01167a15c910c028cc3bfa17fa

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 # Manual testing checklist
 > **Policy:** this checklist is updated **in the same commit** as any functional
 > change (like CHANGELOG.md). Every release: run at least the smoke column on the
 > synthetic demo (`demo/`), and the full list before major releases. Items marked
 > `[manual]` are covered by unit tests or the headless smokes in `demo/` — they still
 > deserve an occasional eyeball. File every failure as a GitHub issue before fixing.
 > **What `[manual]` means (since 2026-07-27).** A named check exists that FAILS
 > when the behaviour breaks — in `npm test` or in the smoke suite, both of which
 > run in CI on every push. Where the check lives is written next to the marker
 > (`[auto: smoke_modes]`). Before this date the marker described an intention:
 > the smoke suite printed values and always exited 0, so 96 markers guarded
 > nothing (external audit T1/T3). If you add a checklist line marked `[manual]`,
 > add the failing check in the same commit.
 > **⚠ Rule: a new scrollable list inside a dialog is tested by GEOMETRY, never
 > by the DOM.** Any new scrolling box or `overflow` container added to a dialog
 > MUST get a smoke that measures **the container's own height and the visible
 > position of its first item** (`getBoundingClientRect`, and the item's rect
 > against the box's rect) — counting rendered rows, or asserting that the nodes
 > exist, proves nothing. The failure mode is always the same and always
 > invisible to a DOM check: a scrolling box is a flex item whose automatic
 > minimum size is zero (`min-height: auto` → 0 for an `overflow` child), and a
 > dialog body is a flex column with a height cap, so the box is the one child
 > that can be squeezed to a sliver while every row inside it renders happily.
 > It has bitten us twice already: the **target search results** in the tap
 > action dialog (v1.53.1 — 26 matching automations rendered into a 1 px
 > stripe; the smoke counted rows and passed) and the **«Already uploaded»**
 > plan picker (dev, unreleased — rows present, box 14 px tall, same story).
 > Both smokes measure heights now; write the third one that way from the start.
 - [ ] Smoke harness itself (v1.43.2, audit T1/T2): every smoke asserts named
       facts via `check`/`checkAll` and exits non-zero on any mismatch or
       uncaught in-card exception; the suite runs in CI against a FRESHLY built
       bundle. Sanity ritual: break one invariant on purpose (e.g. remove the
       kiosk editor guard) and confirm the matching smoke goes red [auto: CI job "smoke"]
 - [ ] Room gear discoverability (v1.43.3, user feedback): in the Plan editor
       every room card carries a pill button "⚙ Room" of a FIXED readable size
       (independent of the card font) — including rooms without a name; it opens
       Room settings [auto: smoke_feedback_v2]
 - [ ] Metrics readability (v1.43.3): the metrics line is 0.75 of the room name
       (was 0.62 — unreadable on tablets); per-room sliders still apply on top [auto: smoke_feedback_v2]
 - [ ] Touch tooltips, take two (v1.43.3): a hover tooltip never appears after
       ANY touch/pen pointer event, even if the browser claims `hover: hover`
       (stylus, paired mouse, vendor skins) [auto: smoke_feedback_v2]
 - [ ] Light-source flag (v1.44.0, user feedback): a smart SWITCH driving dumb
       fixtures glows in the "Light sources" fill once "This device is a light
       source" is ticked (its own entity or the lights bound under "Controls");
       unticked devices without a light entity never glow [auto: smoke_glow]
 - [ ] Device card controls (v1.44.0): the device card opens with its
       controllable entities FIRST — toggles right there (≥30 px tap targets),
       cover/lock/climate open HA more-info; model, links and manuals moved
       below; config/diagnostic entities are not listed; locks never toggle from
       the card [auto: smoke_card_controls]
 - [ ] Lock invariant, all paths (v1.44.2, review CR-1): icon tap, controls[],
       device card and _cardToggle refuse locks/alarm panels entirely; the door
       card's Unlock asks for confirmation, Lock does not [auto: smoke_lock_invariant]
 - [ ] Attachment migration is transactional (v1.44.2, review CR-2/CR-3):
       rebinding COPIES files, saves the config, and only then deletes the old
       folder; a rejected save leaves the old files and urls intact; a name
       collision in the destination gets a unique name (the pre-existing file is
       never silently linked); urls are rewritten only for confirmed copies
       [auto: unit logic.test + tests_backend]
 - [ ] Plans and PDFs load in a real browser (v1.44.3, B1 regression): open a
       dashboard with an uploaded plan — the background renders and a manual link
       opens; DevTools shows /api/houseplan/content/... returning 200 via a
       signed url, while the same url without authSig returns 401
       [auto: tests_backend + manual]
 - [ ] Auth policy is single-sourced (v1.44.4, B2): the HTTP upload and every WS
       write use the same `may_write`, which denies non-admins when the config
       entry is unavailable [auto: tests_backend]
 - [ ] Coordinates and caps (v1.44.4, B5): NaN/Infinity are refused on room
       rects, polygon vertices, view_box and openings — not only in layout; the
       openings list honours MAX_OPENINGS [auto: tests_backend]
 - [ ] Drag hardening (v1.44.4, L4 sub-item): every drag pipeline captures the
       pointer through the tolerant helper; decor shapes cannot be dragged more
       than a quarter of the plan outside the viewBox [auto: smoke_decor]
 - [ ] Room climate counts hidden sensors (v1.44.5): a thermometer that is NOT
       placed on the plan (hidden by filtering or by the user) still feeds the
       room card, the tooltip and the temperature fill; fridges/TRVs still do
       not; an explicit per-room source still wins [auto: unit devices.test]
 - [ ] Room tooltip wording (v1.44.5): hovering a room shows its name (plus
       temperature/signal when available) and no longer claims "open the area" —
       room clicks were removed in v1.40.1 [manual]
 ## Environments matrix
 Run the *core flows* (marked ★ below) in each environment at least once per minor release:
 - [ ] Chrome / Edge (desktop, Windows or Linux)
 - [ ] Firefox (desktop) — SVG viewBox math and container queries differ historically
 - [ ] Safari (macOS) — pointer events / pinch behavior
 - [ ] HA Companion app, Android (cold start! the v1.7.2 race lived here)
 - [ ] HA Companion app, iOS
 - [ ] Tablet in kiosk/panel mode (wall-tablet scenario, landscape)
 - [ ] Phone portrait, narrow ≤400 px (adaptive header ≤620 px)
 - [ ] Dark theme and light theme (badges, dialogs, plan contrast)
 - [ ] RU profile locale and EN profile locale (+ `language:` card option forcing each)
 ## Installation / upgrade / removal
 - [ ] Fresh install via HACS custom repository → integration appears, card auto-registers as a Lovelace resource (`?v=` matches manifest); no manual resource setup
 - [ ] `single_config_entry`: adding a second entry is impossible [manual]
 - [ ] Upgrade via HACS: `?v=` bumps after HA restart, browser picks the new bundle without cache clearing
 - [ ] YAML-mode Lovelace: falls back to `extra_module_url` (card loads)
 - [ ] Removal: delete entry → Lovelace resource entry disappears; `.storage/houseplan.*` survives; reinstall picks the old config up
 - [ ] Diagnostics download works; personal fields (name/link/description/pdfs) are `**REDACTED**` [manual]
 ## Modes (v1.25.0) ★
 - [ ] The card always loads in **View**; edit modes are never restored [manual]
 - [ ] View: pan/zoom/space-switch/tap/long-press/tooltips only — dragging an icon,
       label or opening does nothing; panning may start on top of an icon [manual]
 - [ ] View header: space tabs + count + zoom + editor tabs, the general-settings
       cog and the per-space gears (visible in EVERY mode since v1.30.1/v1.30.3
       for users who may edit); no editor toolbars [auto: smoke_modes]
 - [ ] Plan: markup toolbar, space gears, +space, ⚙ palette; device icons hidden,
       labels/openings draggable; orange stage frame [manual]
 - [ ] Devices: icon drag works, click opens the marker editor directly; +/👁/↺/⬡
       buttons; accent stage frame [manual]
 - [ ] Mode tabs hidden for non-admin users; segmented control highlights the active mode
 - [ ] Openings in View (v1.28.1): the door/window itself is a pure drawing — no
       cursor change, no hover outline, no hit target, no click, regardless of
       bindings [manual]
 - [ ] The LOCK BADGE is the one exception: when a lock is bound it is shown and
       clickable in View (pointer cursor, click → door/lock info card); inert in
       Plan so it does not fight editing [manual]
 - [ ] Device icons in View show a pointer cursor (no grab); grab only in the
       Devices mode [manual]
 - [ ] In Plan an opening is interactive: grab cursor, hover outline, drag along
       walls, click (any tool) opens its properties — with a 3 px drag threshold
       since v1.43.1, so a tap is never swallowed [auto: smoke_inert_openings]
 - [ ] Opening drag rulers (2026-08-03): while an opening is dragged, a measure
       badge on EACH shoulder shows the along-the-wall distance from the wall end
       to the nearest opening edge, live; the wall is ONE room's edge — the edge
       the opening is snapped to — so a neighbouring room's collinear edge is
       never merged in; at that edge's center (±half a grid step) a
       perpendicular dashed tick appears and the center magnet-snaps — Shift
       disables the magnet; badges and tick vanish on release
       [auto: smoke_opening_measure + unit openingShoulders]
 - [ ] The SAME rulers while PLACING a new opening (2026-08-03): with the
       Opening tool, moving along a wall shows the dashed ghost together with a
       badge on each shoulder of the would-be opening (default 90 cm, measured
       on the snapped room's OWN edge), a perpendicular tick + magnet at that
       edge's centre, Shift opting out; the click places the opening at the
       magnetised point and ghost, badges and tick all disappear at once
       [auto: smoke_opening_measure, the «PLACING a new opening» section]
 ## Onboarding ★
 - [ ] Empty config, HA has floors → floors-import wizard offers them sorted by level [manual]
 - [ ] Wizard: uncheck all → "Create" disabled; "Start from scratch" → classic dialog
 - [ ] Wizard: N floors → space dialog per floor with prefilled name and progress "i of N"; Skip skips one; Cancel aborts the whole queue [manual]
 - [ ] After the last wizard space (or first manual space) → markup mode auto-opens with a toast
 - [ ] Empty config, no floors → classic "New space" dialog auto-opens once per session
 - [ ] All floors skipped, nothing created → empty state with "Add space" button remains usable
 ## Spaces ★
 - [ ] Create with an image (SVG, PNG, JPG, WebP) → correct aspect, crisp at zoom (SVG)
 - [ ] Oversized plan (>8 MB) → readable error toast, dialog stays open
 - [ ] Create with "No image — I'll outline rooms by hand": orientation landscape/portrait/square respected [manual]; borders+names default ON [manual]
 - [ ] Draw-space (no background) renders a WHITE canvas (paper-like), markup works on it; room borders/names stay legible on white [manual]
 - [ ] Edit: rename; replace image; **switch image→draw detaches the plan** [manual]
 - [ ] Delete space with rooms/devices → tab disappears, layout of other spaces untouched
 - [ ] Display settings: borders toggle, names toggle, color picker + opacity slider live-preview after save, fill selector [manual]
 - [ ] Fill "zigbee": rooms tint red→green by average LQI; rooms without zigbee stay unfilled [manual]
 - [ ] Fill "lights": yellow when any light on, grey when all off, unfilled when the room has no lights [manual]; toggling a light from the plan recolors the room
 - [ ] Fill "temperature": blue below the comfort range, green inside, yellow above [manual]; comfort bounds editable inline on the radio row (swapped bounds tolerated [manual], clearing a field cannot zero a bound [manual]); rooms without a temperature reading stay unfilled [manual]
 - [ ] Fill mode is a radio group (no dropdown); labels carry no color legend
 - [ ] Room hover darkens the current fill (no recolor to blue); unfilled rooms hover light grey
 - [ ] Room tooltip shows the average room temperature when any thermometer reports [manual]
 - [ ] Average room temperature counts ONLY thermometer/air-monitor devices — fridges, TRV heads,
       smart-plug chip temperatures (`*_device_temperature`) and diagnostic-category temps are excluded [manual]
 - [ ] Space dialog is 500 px wide; the comfort-bounds inputs are compact (56 px)
 - [ ] The scale (cm per cell) input is compact (72 px), not full-width [manual]
 - [ ] General settings (⚙ in the header): fill colors grouped by mode (lights on/off/none,
       temp cold/comfy/hot, LQI weak/strong), each with its own opacity slider [manual];
       Reset restores defaults; saving defaults stores nothing [manual]
 - [ ] Custom fill colors apply to the full card AND the static space-card
 - [ ] LQI gradient interpolates between the configured weak/strong colors [manual]
 - [ ] Per-space "Show zigbee signal (LQI)" toggle hides/shows the badges next to
       devices and the signal line in room tooltips for that space only [manual]
 - [ ] Device icon badge is centred exactly on its point (no 1 px down-right drift) [manual]
 - [ ] Device glyph is centred within its badge (no vertical drift — real ha-icon is block+line-height) [manual]
 - [ ] Room hover highlight still works when custom borders/fills are on
 - [ ] Settings persist across reload and other browsers (server-side)
 ## Room markup editor ★
 - [ ] Grid appears; dots snap; the outline draws pair-by-pair; shared walls reused
 - [ ] Ruler: while drawing, the length of the current segment follows the cursor
       (metres, or feet+inches on an imperial HA); scale = space "cm per cell" (default 5)
 - [ ] A line cannot exist on its own: start an outline, do NOT close it, leave markup —
       no lines are left behind (nothing was written to the config)
 - [ ] Deleting a room removes its walls, EXCEPT those shared with a neighbouring room
       (the neighbour still yields them); deleting the neighbour too removes them as well
 - [ ] There is no "Erase" tool in the markup toolbar (removed in v1.19.0)
 - [ ] Rooms never overlap (v1.20.0): a click strictly inside an existing room is refused with a
       toast; a click ON a shared wall (including mid-span of a longer neighbour wall) still works
 - [ ] Closing an outline drawn AROUND an existing room is refused; the outline stays open
 - [ ] Merge (v1.21.0): two rooms sharing a wall merge into one; the dialog picks the surviving
       name/area; rooms touching only at a corner or apart are refused with a toast
 - [ ] Split (v1.21.0): click a room, then two points on its walls — the bigger part keeps the
       name/area/devices, the smaller opens the new-room dialog; Cancel leaves the room whole
 - [ ] Split: a cut with an end off the wall, or along a wall, is refused with a toast
 - [ ] Split: the click snaps to the nearest wall, so it works on non-grid-aligned rooms
       (imported/legacy polygons), not only on rooms drawn on the current grid [manual]
 - [ ] Split: a click far from any wall (middle of the room) is a miss with a toast —
       the wall-snap pull is capped, accidental clicks do not pick a wall [manual]
 - [ ] Esc / Ctrl+Z removes the last dot (and its line); Reset clears the path
 - [ ] Closing the contour (click the first dot, ≥4 points) opens the room dialog
 - [ ] Room dialog: area list shows only unassigned areas; picking an area prefills the name
 - [ ] "No area" room (decorative) requires a name; saves with `area: null`
 - [ ] Cancel in the dialog reopens the contour (last point undone)
 - [ ] Saving a room with an area: area devices appear with icons; positions are fixed into the layout [manual]
 - [ ] Erase tool removes exactly the clicked line; Delete-room removes the polygon after confirm
 - [ ] Device icons hidden during markup; visible again on exit
 ## Devices on the plan ★
 - [ ] Auto devices appear only in rooms bound to their area [manual]
 - [ ] Filtering hides bridges/groups/scenes/excluded integrations; 👁 "show all" reveals [manual]
 - [ ] Duplicate "name|area" numbered ("Lamp", "Lamp 2") [manual]
 - [ ] Light groups fold their single lamps; `group_lights=false` unfolds [manual]
 - [ ] Drag anywhere (no edit mode), snaps to grid, persists after reload, per space
 - [ ] ↺ reset restores auto layout after confirm
 - [ ] Temperature badge on thermometers; LQI value under zigbee icons with red→green color
 - [ ] Unified live states (dev, owner 2026-08-05): actual work is yellow;
       open door/window, unlocked lock and open valve are orange; covers stay
       neutral and morph their icon; unavailable is faded. The plate and the
       activity effect come from the same semantic resolver
 - [ ] State icons (v1.26.0): auto icons morph with state — door/window/garage open↔closed,
       lock locked↔unlocked, bulb on; custom icons and unavailable states never morph [manual]
 - [ ] display "Value instead of an icon": the marker shows the measurement (°/%/unit)
       as its body, small badges hidden; non-numeric fallback keeps the icon [manual]
 - [ ] RGB lights (v1.27.0, contract changed in v1.52.0): a lamp's colour lives
       in its glow spot and the activity-effect fallback ONLY — the icon/badge/border get
       no RGB tint; explicit activity color still wins; off lights unchanged
       [auto: smoke_light_badges + smoke_rgb_alarm]
 - [ ] Alarm pulse (v1.27.0, unified dev): leak/smoke/gas/CO/siren in `on`
       and an alarm control panel in `triggered`
       get a red plate and red pulse over every display mode and even with
       ordinary live-state dressing off; clears on 'off'; unavailable never
       alarms [manual]; reduced-motion is static
 - [ ] Render cost (v1.43.1, audit L1): geometry (space model, open pairs) is
       computed once per config change, not per HA state push — smoke asserts
       zero recomputations across 10 state pushes and recomputation after an
       edit; the plan still renders dashes/islands correctly [auto: smoke_render_perf]
 - [ ] Opening tap vs drag (v1.43.1, audit L4): a tap on a door in the Plan
       editor opens its properties (3 px threshold like the other pipelines) and
       writes nothing; a real drag that ends where it started also writes nothing [auto: smoke_render_perf]
 - [ ] Concave containment (v1.43.1, audit G2): an island room inside a U- or
       L-shaped parent is accepted and punches the evenodd hole; a traced
       duplicate outline is still NOT containment [auto: smoke_inert_openings]
 - [ ] Backend hardening (v1.43.1, audit B2-B5): the admin check fails closed
       when the entry is unavailable; layout/set honours expected_rev; a
       config/set without expected_rev over a non-empty store logs a warning;
       NaN/Infinity coordinates and oversized collections are rejected [auto: unit: logic.test]
 - [ ] Save race (v1.43.0, audit L2): make a markup edit, then press Save in any
       dialog within 500 ms (or let another client save) — the markup edit must
       survive and reach the server; a failed reload now shows a toast [auto: unit: tests_backend]
 - [ ] Niche split (v1.43.0, audit G1): a cut that starts AND ends on the same
       wall carves a niche; the two parts' areas must sum to the original (the
       invariant is enforced in code and asserted for every split test) [auto: smoke_save_race]
 - [ ] Authenticated content (v1.43.0, audit B1): plan images and marker files
       are only reachable through /api/houseplan/content/… with a session; the
       old /houseplan_files/plans|files paths return 404 after a restart; old
       stored URLs keep working (rewritten on read) [auto+manual]
 - [ ] Every editor option is storable (v1.45.3, issue #3): set a sensor to
       "value instead of an icon" and save — no validation error, the value shows
       on the plan after a reload. Same for each tap action and each fill mode
       [auto: backend test_every_display_mode_the_editor_offers_is_accepted and
       neighbours, test_a_marker_showing_its_value_can_be_saved]
 - [ ] Room settings button (dev): detached from the (movable) name label —
       always at the room's geometric centre, one button-height below it; sized
       at 70% of a device icon and zooming WITH the plan; the small metric rows
       under the room name now show in the plan editor too
       [auto: smoke_room_cards gearDetached/plainInPlan]
 - [ ] One indicator always (v1.52.1, HP-1520-01): in a glow space the plan
       editor (no glow layer) shows the lit lamp yellow again; the devices
       editor draws the layer and keeps the badge standard
       [auto: smoke_light_badges]
 - [ ] Size/angle parity (v1.52.1, HP-1513-01): a marker with size 3 / angle 37
       scales x3 and rotates on BOTH cards [auto: smoke_size_angle_parity]
 - [ ] Tap runs an automation (dev, owner's spec 2026-07-29): the tap-action
       list has "Run automation/script/scene" with a searchable picker; saving
       without a target is refused; the confirm checkbox guards toggle AND run
       (our dialog, Esc/cancel = no call); automation.trigger / script.turn_on /
       scene.turn_on per domain; a deleted target toasts and calls nothing;
       covers/valves joined the card-wide toggle EXCEPT garage/door/gate
       device classes (explicit per-device toggle still works for them)
       [auto: smoke_tap_run + unit resolveTapAction/runServiceFor + backend
       test_run_target_is_bounded_to_runnable_domains]
 - [ ] Tap opens/closes a cover (dev, owner's spec 2026-08-03): the tap-action
       list gains "Open/close (curtains/blinds)" — offered ONLY when the binding
       has a cover entity, and never for the guarded classes garage/door/gate
       (a value smuggled into the config there degrades to the info card).
       closed -> cover.open_cover, open (incl. ajar) -> cover.close_cover,
       opening/closing -> cover.stop_cover, no readable state -> cover.toggle;
       the «ask for confirmation» checkbox guards it like toggle/run.
       Indication: while travelling the icon breathes a soft activity ring
       (`.activity-transition`, 2.2s, static under prefers-reduced-motion) in
       display «Icon + activity» and the plate stays NEUTRAL in EVERY state
       (2026-08-04, see the next item); the icon
       morphs by state + device_class (blinds/shutter/curtain…), unknown state
       morphs nothing; no position percentages anywhere
       [auto: smoke_cover_tap + units resolveTapAction/coverService/stateIcon +
       backend test_cover_tap_action_is_accepted]
 - [ ] A cover is NEVER painted (dev, owner 2026-08-04): «у штор не должно быть
       жёлтой подложки никогда, индикация открыто/закрыто за счёт морфинга
       иконки». Walk one curtain through closed / open / ajar / opening /
       closing: the plate is the plain neutral badge every time — never the
       yellow «включено» one, never the orange «открыто» frame it used to wear
       while open — the icon is the only open/closed signal, and the breathing
       `.activity-transition` ring appears in the two travelling states and
       nowhere else when «Icon + activity» is selected.
       The morph is exhaustive: every device class gives two DIFFERENT glyphs
       (awning included), a cover with no device_class morphs within its own
       auto-icon family (mdi:roller-shade, mdi:garage-variant), a hand-picked
       icon morphs only inside the pair it was picked from, and an
       unknown/unavailable state morphs nothing. NOT touched: an open door /
       window binary sensor, an unlocked lock and an open valve still wear the
       orange «открыто» frame (a valve has no icon pair, so the frame is all it
       has) [auto: smoke_cover_no_plate + unit stateIcon «every class, both
       ways»]
 - [ ] Open/close works when the cover is NOT the primary entity (dev, owner's
       report 2026-08-04): a curtain driver that ships its `cover.*` hidden by
       the integration next to a visible `switch.*_reverse_direction` (Aqara
       E1 — his own) has a SWITCH for a primary; picking «Open/close» in the
       dialog, saving it and tapping the marker sends `cover.open_cover` to the
       cover, never touches the service switch and never falls back to the info
       card. The guarded class is read off that same cover, so a garage still
       degrades to info and is still not offered in the dialog
       [auto: smoke_cover_not_primary + unit coverEntityOf]
 - [ ] Curtain INDICATION follows the same cover (dev, owner 2026-08-04): with
       «Open/close» chosen on that same Aqara marker, the plan shows the cover
       and not the service switch — the breathing ring while it travels
       (`activity-transition`, opening AND closing), the `mdi:curtains-closed` /
       `mdi:curtains` morph, a neutral plate throughout (the «открыто» frame
       was retired for covers later the same day), and no yellow plate when
       `switch.*_reverse_direction` happens to be on. The rule is exactly
       the explicit action (docs/FILTERING.md «What a marker SHOWS»): take the
       action away and the marker speaks for its primary again; a lit lamp that
       also owns a cover keeps its yellow and its own icon
       [auto: smoke_cover_not_primary (the indication section)]
 - [ ] Nothing paints over an explicit curtain (dev, audit DEV-1DA1-01): the
       cover is the FIRST rule of «What a marker SHOWS», above `controls` and
       above a lit light. Two markers set to «Открыть/закрыть»: one on a mixed
       device whose own `light.*` is ON, one whose bound `controls` switch is
       ON. In every cover state (closed / open / opening / closing) the plate
       stays neutral — never the yellow «включено», never the orange «открыто»
       — with «Icon + activity» the travelling ring breathes, the icon morphs
       with the cover, and in glow fill the ring is still there (that is where a yellow-plated curtain
       used to lose BOTH indicators). Untouched: the same mixed device without
       the explicit action is yellow again, a wall switch still mirrors its
       controls, and an «Открыть/закрыть» marker whose device has no `cover.*`
       at all falls back to its primary [auto: smoke_cover_plate_precedence]
 - [ ] Light-source badges (v1.52.0): in glow fill a lit lamp's badge stays
       standard (the spot is the indicator) and a lit socket stays yellow; in
       other fills a lit lamp is plain yellow with no RGB tint; morphing and
       the activity colour fallback survive [auto: smoke_light_badges +
       smoke_rgb_alarm]
 - [ ] Icon size multiplier scales the glyph (dev): set a marker's size to 3 —
       the icon inside grows with the badge instead of staying default
       [auto: smoke_icon_scale]
 - [ ] Auto-grid parity (v1.51.2, HP-1511-01): with an empty layout, a visible
       device among hidden ones sits at the same spot on both cards
       [auto: smoke_hidden_flag autoGridParity]
 - [ ] Activity ghost (v1.51.2, unified dev): a hidden icon+activity marker
       shows its base icon and no effect [auto: smoke_hidden_flag rippleGhost*]
 - [ ] Hidden LQI parity (v1.51.1, HP-1510-01): a room whose only Zigbee
       devices are hidden paints the same lqi fill on the full and the static
       card [auto: smoke_hidden_flag lqiParity]
 - [ ] Ghost shows no numbers (v1.51.1, HP-1510-02): a hidden value-display
       device renders as a plain ghost — no value/temp/hum/LQI, no icon morph
       [auto: smoke_hidden_flag ghostHidesValue]
 - [ ] Hide-from-plan flag (dev, docs/FILTERING.md): every device dialog has
       the checkbox, incl. virtual; hidden devices vanish from every mode and
       the count, still count toward room LQI, cast no glow/light fill; the
       device editor's "Show hidden" (local, per tab) shows them as BLUE
       dashed ghosts — distinct from a grey unavailable icon — with NO live
       state paint (no yellow, no alarm, no activity);
       unticking keeps a hidden:false marker (re-seed protection); an old
       config materialises on first load by an editing client and legacy
       clients keep the old behaviour until then
       [auto: smoke_hidden_flag + unit seedHiddenBindings/seeded/legacy]
 - [ ] Yellow means working (dev): a TRV whose hvac_action is heating glows
       yellow; one that is merely enabled (idle) or has a service switch on
       (anti-scaling, child lock) stays dark; a lit light turns its state on by
       the same condition that lights the glow pool — and shows the yellow
       badge only where the glow spot is NOT drawn: with the glow layer
       visible the spot is the one indicator (v1.52.0)
       [auto: smoke_yellow_principle + smoke_light_badges]
 - [ ] Editor gestures on touch (dev): in the plan editor on a phone, pinch
       zooms and a moving finger pans; releasing after a gesture does not draw
       a point, a clean tap still does [auto: smoke_editor_gestures]
 - [ ] Legacy geometry parity (v1.50.4, HP-1503-01): a store with a zero
       viewport and a negative rect renders identically sane in BOTH cards —
       full canvas fallback, normalised rectangle [auto: smoke_legacy_geometry]
 - [ ] Sizes are positive (v1.50.3, HP-1502-01): view_box or room w/h of zero
       or below is refused; a store that already holds one opens on the full
       canvas, not a blank screen [auto: test_sizes_are_not_coordinates + unit
       safeViewBox fallback]
 - [ ] Room card layout (v1.50.3): the settings button is the bottom row of the
       card and the room name sits in the same spot in view and plan modes
       [manual; verified by vb-coordinate measurement]
 - [ ] Geometry bounds (v1.50.2, HP-1501-01): a config with a 1e100 room
       vertex is refused by the server; one already stored still renders with a
       sane frame [auto: test_geometry_magnitudes_are_bounded + unit
       contentBounds legacy case]
 - [ ] No-op repair (v1.50.2, HP-1501-02): geometry/repair with a typo'd space
       id errors, moves no revision and keeps the previous backup undoable
       [auto: test_a_noop_repair_does_not_eat_the_backup]
 - [ ] Card below other dashboard content (v1.50.1, HP-1500-02): place the card
       after a tall card in a normal dashboard — the plan still gets most of the
       viewport instead of a zero-height stage [auto: smoke_zoom_out]
 - [ ] Frame never degenerate (v1.50.1, HP-1500-03): a space with one lone
       marker opens with canvas around it, not an empty scene; an absurd stored
       coordinate neither hides the plan nor is accepted by the server
       [auto: unit contentBounds + backend test_layout_coordinates_are_bounded]
 - [ ] Stranded migration repair (v1.50.1, HP-1500-01): geometry/repair with
       dry_run previews, applies with a backup, undo restores; wrong space is
       recoverable [auto: test_geometry_repair_is_explicit_previewable_and_undoable]
 - [ ] Editors see the whole canvas (v1.50.0, HP-1490-03): a hand-drawn space
       with one small room opens content-fit in View; switching to the plan
       editor shows the full square with room to draw a second room far away;
       back to View restores the content fit [auto: smoke_audit_1490]
 - [ ] Save waits for a picked plan's proportions (v1.50.0, HP-1490-04): pick a
       saved plan and hit Save before the thumbnail loads — the stored aspect is
       the real one, never the previous file's [auto: smoke_audit_1490]
 - [ ] Zoom goes below the fit (v1.50.0): minus past 100% floats the plan
       centred, floor at 0.4x; entering an editor keeps the stage inside the
       viewport [auto: smoke_zoom_out]
 - [ ] Migration crash recovery (v1.50.0, HP-1490-01): kill HA between the two
       store writes of the square migration — the next start finishes the layout
       half from the saved intent
       [auto: test_square_migration_finishes_after_a_crash_between_the_writes]
 - [ ] Parallel upload quota (v1.50.0, HP-1490-02): two simultaneous uploads
       with one slot left — exactly one succeeds
       [auto: test_parallel_uploads_cannot_slip_past_the_quota_together]
 - [ ] Zoom opens on the content (v1.49.0): a space with no background and one
       small room opens with that room filling the screen, with a small margin.
       With a background it still fits the whole image
       [auto: unit: contentBounds]
 - [ ] Deleting a picked plan is refused (v1.49.0, HP-1470-02): pick a saved
       plan, reopen the list — its delete button is disabled. Ask the server to
       store a plan url whose file is gone: `missing_plan`, and the revision does
       not move [auto: smoke_saved_plans + backend
       test_config_set_refuses_a_plan_that_no_longer_exists]
 - [ ] Uploads are bounded (v1.49.0, HP-1470-01): past the store quota an upload
       is refused with a clear error and the disk does not grow; the plan list
       returns the newest 60 with a total
       [auto: unit: test_check_quota_counts_the_whole_store_not_one_request,
       backend test_uploads_are_bounded_by_a_store_quota]
 - [ ] Square canvas migration (v1.48.0): after the upgrade every existing plan
       looks exactly as before, just with margins where the canvas was extended.
       Measure a wall in the plan editor — the length in cm is unchanged. Marker
       positions, doors, decor and the saved zoom are all where they were
       [auto: unit: test_a_wide_plan_gains_margins_above_and_below and neighbours,
       test_migration_preserves_real_lengths_and_shapes]
 - [ ] A plan image is centred (v1.48.0): a wide image sits in the middle with
       empty bands above and below, a tall one with bands at the sides, and it is
       never stretched [auto: unit: fitInSquare + smoke_space_settings]
 - [ ] Re-attaching a detached plan (v1.47.0): detach a plan, save, RELOAD THE
       PAGE, open space settings → "Already uploaded" → the image is listed with
       its size and no "in use" note → attach it → it renders. The one a space
       uses shows that space and cannot be deleted; a free one can, with a
       confirm, and disappears from the list
       [auto: smoke_saved_plans + backend test_stored_plans_can_be_listed_and_deleted_on_request]
 - [ ] Detaching a plan keeps the file (v1.46.6): switch a space to "draw" and
       SAVE — the image is still in `config/houseplan/plans/` right afterwards,
       and after a restart, and can be re-attached. Deleting the space keeps it
       too. Replacing a plan still removes the one it replaced, immediately.
       Check straight after the save: the earlier bug deleted the file at that
       moment, while every scheduled-pass test passed
       [auto: unit: test_plan_collection_matrix, test_attachment_collection_matrix,
       backend test_detaching_a_plan_keeps_the_file]
 - [ ] Rebinding a device does not eat its manuals (v1.46.5): attach two files to
       a device, rebind it to another HA device — both are readable afterwards.
       If a copy failed, the file it failed on is still there rather than deleted
       with the folder [auto: backend test_files_cleanup_keeps_referenced_files]
 - [ ] Nothing accumulates on an idle instance (v1.46.2/v1.46.3, HP-1461-01,
       HP-1462-01): attach a file, cancel the dialog, and do not save anything
       else — the file is gone after a restart AND after the daily pass, while
       every file the configuration still references is untouched. Seed the
       strays AFTER the last save, or `config/set` collects them and the check
       proves nothing
       [auto: backend test_startup_sweep_collects_what_no_commit_will,
       test_daily_sweep_callback_collects_too, test_sweep_and_a_config_write_do_not_race]
 - [ ] A drag wins over a concurrent remote move (v1.46.2, HP-1461-02): drag an
       icon and, while the save is still in flight, have another window move a
       different icon — your icon stays where you put it and the other one
       updates [auto: smoke_layout_sync]
 - [ ] Concurrent uploads of one name (v1.46.1, HP-1460-01): attach the same
       file from two browser tabs at once — two attachments, two sets of bytes,
       neither lost. A file whose name is at the length limit still downloads
       [auto: unit: test_reserve_filename_is_safe_under_concurrency and neighbours]
 - [ ] No temporary files survive (v1.46.1, HP-1460-02): abort a large upload
       mid-transfer, send two files in one request, make promotion fail — in each
       case the files folder holds no `.upload-*`. An old one is swept at startup
       [auto: backend test_upload_leaves_no_temporary_behind + unit: sweep_upload_temps]
 - [ ] Two full cards agree on positions (v1.46.1, HP-1460-03): open the plan in
       two windows, drag an icon in one — it moves in the other without a reload;
       a drag in progress in the second window is not thrown away
       [auto: smoke_layout_sync]
 - [ ] Uploaded SVG is inert as a document (v1.46.0, HP-1454-01): open a plan's
       signed url directly in a tab — a `<script>` inside it must not run and must
       not reach the HA session's localStorage; the same plan still renders in the
       card. PDFs still open in the browser viewer
       [auto: smoke_svg_sandbox + backend test_uploaded_svg_is_sandboxed_and_a_pdf_is_not]
 - [ ] An attachment never overwrites another (v1.46.0, HP-1454-02): attach a file,
       cancel the dialog — the previously stored file is byte-identical. Attach
       `manual.pdf` to two NEW icons — two independent files. A cancelled upload is
       gone an hour later
       [auto: backend test_upload_never_overwrites_an_existing_attachment + unit: collect_attachments]
 - [ ] Two quick edits both survive (v1.46.0, HP-1454-03): with a slow connection,
       make an edit and another one before the first save answers — both are in the
       stored config, only one write is ever in flight, and no conflict toast fires
       [auto: smoke_config_writer]
 - [ ] Open boundaries follow geometry (v1.46.0, HP-1454-04): change a space's
       aspect or drag a room vertex — the open boundary and the light through it
       move with the walls, without a reload [auto: smoke via model-identity key]
 - [ ] Inner limits (v1.46.0, HP-1454-05): max and max+1 for polygon points,
       open_to, controls, pdfs, text and url lengths; an oversized config as a
       whole is refused with `too_large`
       [auto: unit: test_inner_collection_limits + backend test_config_write_is_capped_by_total_size]
 - [ ] Big files stream (v1.46.0, HP-1454-06): upload a ~50 MB manual and download
       it twice in parallel — HA's memory does not grow by a file per transfer
       [manual]
 - [ ] Static card parity (v1.46.0, HP-1454-07): a room whose fill is set to "none"
       under a space filled by light is transparent on BOTH cards
       [auto: smoke_render_parity]
 - [ ] Layout reaches the static card (v1.46.0, HP-1454-08): drag an icon on the
       full card — a static card on the same dashboard moves it too, with no
       config write and no reload
       [auto: backend test_layout_keeps_its_revision_and_announces_changes + manual]
 - [ ] Repair issues are not immortal (v1.46.0, HP-1454-09): create a missing-plan
       warning, then delete the space — the warning disappears [manual]
 - [ ] A path the backend cannot sign does not become a request loop (v1.45.4,
       review R5-1): when `content/sign` answers successfully but omits a path,
       the card backs that path off individually and keeps the urls it did get;
       a re-render asks only for what is still missing, and only after the wait
       [auto: unit: signing.test + backend test_signing_one_path_may_fail_without_failing_the_request]
 - [ ] Signing does not amplify on a bad connection (v1.45.2, review R4-2): with
       the WebSocket slow or refusing, the card issues ONE sign request per url
       and backs off after a failure instead of asking again on every render; a
       request that never answers stops blocking retries after 15 s
       [auto: unit: signing.test + smoke_space_card_bg]
 - [ ] A broken plans directory does not fail a save (v1.45.2, review R4-1): make
       the plans folder unreadable and save the configuration — the save
       succeeds, the revision is usable, and the next save does not conflict
       [auto: backend test_a_failing_collector_does_not_undo_an_accepted_save]
 - [ ] Two editors, one plan (v1.45.1, review R3-1): with the same space open in
       two tabs, attach a background in each in turn — the plan last saved is the
       one served, and neither commit deletes the other's file. A rejected upload
       disappears on a later save, not immediately
       [auto: backend test_late_commit_of_one_client_never_deletes_another_client_s_plan,
       test_commit_does_not_collect_another_client_s_uncommitted_upload,
       test_abandoned_uploads_are_collected_once_old]
 - [ ] Static card background (v1.45.1, review R3-2): a houseplan-space-card on a
       dashboard shows the plan image, not an empty stage; the browser never
       requests the unsigned path and Home Assistant logs no failed login. A
       failed signing request is retried on the next render
       [auto: smoke_space_card_bg]
 - [ ] Rejected save leaves the plan intact (v1.45.0, review R2-1): attach a new
       background, make the config write fail (a second tab saving first is
       enough) — the previously stored plan is still served, with the same or a
       different extension; after a successful save the old files are gone
       [auto: smoke_plan_upload_reject + backend test_plan_upload_does_not_touch_the_previous_file]
 - [ ] Signature cache on a wall tablet (v1.45.0, review R2-2): with more than
 signed urls every one of them is refreshed (batched), entries for
       files no longer in the config are dropped, an expired signature is never
       served and an aging one keeps working while its replacement arrives
       [auto: smoke_sign_cap]
 - [ ] Climate cost does not grow with rooms (v1.45.0, review R2-3): on a plan
       with dozens of rooms an unrelated HA state update triggers ONE registry
       pass, repeated renders on the same snapshot trigger none, and a changed
       sensor value is still visible immediately [auto: smoke_climate_once]
 - [ ] Plan upload survives a concurrent config revision (v1.44.8): with a second
       tab open on the same plan, attach a background image in space settings —
       the plan shows immediately, `plan_url` is in `.storage/houseplan.config`,
       and the same holds when the space is being CREATED, not edited
       [auto: smoke_plan_upload_race]
 - [ ] Signed plan background (v1.44.7): a space whose plan lives on the content
       endpoint renders its background image with an `authSig` query — the plan is
       visible after a plain page load, and Home Assistant logs NO failed-login
       attempt from the viewer's own IP. Nothing is requested before the signature
       arrives; a 12 h re-sign keeps the previous url until the new one lands
       [auto: smoke_plan_signed]
 - [ ] Dialog zombies (v1.43.0, audit L3): close a dialog (Esc) while its save is
       in flight and let the save fail — the dialog stays closed, the card keeps
       rendering, the error toast still fires [auto: unit: logic.test + manual]
 - [ ] No hover tooltips on touch (v1.42.2): on hover-less devices (tablets,
       phones) taps never pop the room/device tooltip — the data lives in room
       cards and long-press; desktop hover tooltips unchanged [auto: smoke_dialog_zombie]
 - [ ] Card font scales (v1.42.1): three sliders — space-level base (space
       dialog) plus per-room name and metrics sizes (room settings), 50–300%,
       multiplied together and on top of resize-k and kiosk multipliers; the
       live sample card in both dialogs follows the sliders instantly; name and
       metrics scale independently [auto: smoke_font_scales]
 - [ ] Room settings, tier 3 (v1.42.0): a gear on every room card in the Plan
       editor opens Room settings (name, HA area incl. the current one, fill
       override, temp/hum source); the creation dialog has the same section;
       fill override repaints only that room (incl. opting OUT of the glow
       darkness); a temp/hum source (device or entity) feeds the room card,
       tooltip and temperature fill — works for rooms without an HA area;
       renaming/rebinding an existing room now possible [auto: smoke_room_settings]
 - [ ] PDF survival on rebinding (v1.41.2): rebind a marker with attached
       PDFs to another device — the server moves /files/<oldId>/ to the new id
       and the links keep opening; the old folder disappears (no orphans) [manual]
 - [ ] Kiosk mode (v1.41.0): kiosk: true hides the whole header, blocks every
       editor (admins incl.), full-height stage; swipe left/right switches
       spaces at 1:1 (dots indicator, wraps), never while zoomed; double tap
       resets zoom; long-press (3 s) on empty plan opens the per-screen size
       popover (icon ×0.5–3, room-card font; localStorage per device);
       cycle: N auto-advances spaces with a 60 s pause after any touch;
       manual: walk the real wall tablet [auto+manual]
 - [ ] Room link icon (v1.40.1): clicking empty room space in View does
       nothing (default cursor); an open-in-new icon after the room name (rooms
       with an HA area, View only) navigates to the area; no icon in editors or
       on area-less rooms [auto: smoke_room_link]
 - [ ] Smart guides (v1.40.0): while drawing (outline, cut, decor shapes) or
       dragging (icons, room cards, decor) dashed accent guides appear from the
       nearest object sharing the X and/or Y (max two, with a dot at the
       source); the cursor badge shows length · angle and turns green on 45°
       multiples; indication only — no magnetism; nothing in View mode [auto: smoke_align_guides]
 - [ ] Lights toggle by default (v1.39.0): a device whose PRIMARY entity is a
       light (bulbs, chandeliers, night lights, light groups) toggles on click
       out of the box — no per-device setting needed; the device dialog shows
       "Toggle" as its effective default; devices where light is a side
       function (kettle: primary = sensor) keep the Device-card default;
       explicit per-device "Device card" wins over the default [auto: smoke_light_default_tap]
 - [ ] Derived walls cut too (v1.38.4): in the Plan editor the derived wall
       segments (.seg) no longer run solid through an open stretch — only the
       dash remains there [auto: smoke_openwall]
 - [ ] Dashed boundaries in the Plan editor (v1.38.3): open stretches render as
       a true dash in markup too (blue trimmed outlines); merge/split-picked
       rooms keep their full amber highlight [auto: smoke_openwall]
 - [ ] Nav persistence (v1.38.2): closing/reopening the tab restores the last
       space AND editor mode (admins; localStorage); a #space= deep link beats
       the saved space; a stale cache without the saved space retries after the
       live config loads [manual]
 - [ ] Tap action cleanup + right click (v1.38.1): the per-device action list
       has three options (Device card / HA more-info / Toggle), no "card
       default" — the card editor's global tap option is gone and ignored;
       right click on an icon in VIEW opens HA more-info (native menu kept in
       editors; virtual w/o entity → device card) [auto: smoke_tap_ctx]
 - [ ] Binding section redesign (v1.38.0): two radios — Virtual / Pick from
       the HA list — with a "Show entities" checkbox (tooltip) next to the
       second; the dropdown (search inside) appears only in HA mode, opens
       itself when nothing is chosen, closes on pick; Save is blocked until a
       binding is chosen in HA mode; groups/helpers listed always, device
       entities only with the checkbox; editing pre-selects everything [auto: smoke_binding_ui]
 - [ ] True dashed boundary (v1.37.3): the open stretch is a REAL dash — the
       rooms' solid strokes are trimmed out beneath it (hover doesn't bring
       them back), walls elsewhere stay solid; the dashes render ABOVE the
       glow pools [auto: smoke_openwall]
 - [ ] Open-wall hover (v1.37.1): with the tool active the cursor is default;
       near a shared wall it turns pointer and the exact stretch that would
       open is previewed (amber dashed); an already-open boundary previews red
       solid (the click will close it); preview follows the cursor and clears
       on miss [auto: smoke_openwall]
 - [ ] Open boundaries (v1.37.0): the Plan editor's "Open boundary" tool
       toggles a virtual wall between two rooms by clicking their shared wall
       (pull like Split; miss → toast); open stretches render dashed (amber
       highlight while the tool is active); glow light floods the whole
       connected open zone transitively, door sectors work from the zone's
       outer walls; merge/split keep links by room id [auto: smoke_openwall]
 - [ ] Sector wedge fix (v1.36.3): door sectors never darken the light INSIDE
       the room — room outline and sectors are separate clipPath children
       (union), not subpaths of one nonzero path [auto: smoke_glow]
 - [ ] Per-source glow radius (v1.36.2): the device dialog has a "Glow radius"
       field (HA units; empty = general-settings default shown as placeholder);
       an override changes that source's pool and door sectors only [auto: smoke_glow]
 - [ ] Hidden-light primary (v1.36.1): a lamp whose light entity is HIDDEN in
       the registry (folded into a light group) still toggles/reflects the lamp,
       not its do-not-disturb switch or identify button; visible entities of the
       same domain still win over hidden ones [manual: click hallway lamps]
 - [ ] Marker controls (v1.36.0): a marker with "Controls light sources" and
       tap action Toggle flips all bound lights/switches at once (any on → all
       off, all off → all on, one service call); the icon state (yellow badge)
       mirrors the targets, not the marker's own entity — the RGB tint is gone
       since v1.52.0, target colours reach only the glow/activity effect; without explicit Toggle
       the click opens info as usual; the info card lists targets with states;
       locks/other domains are filtered out of controls [auto: smoke_controls]
 - [ ] Glow fill (v1.35.0): fill mode "Light sources" — every room painted with
       one uniform darkness color; lit lamps glow with a radial gradient
       (rgb_color → color temp → default color; brightness scales opacity),
       clipped by the source's room plus door sectors into NEIGHBOUR rooms
       (entrance doors leak nothing; windows don't spill); radius set in
       general settings in HA units (m/ft, stored in cm); no shadow casting —
       islands don't block light (documented limitation) [auto: smoke_glow]
 - [ ] Island rooms (v1.34.0): a contour drawn fully inside an existing room
       (or around one) saves as a nested room — column in a ring, inner room;
       the parent's fill renders with an evenodd hole so the ring paints
       correctly; the island stays clickable; partial overlaps and duplicate
       outlines are still rejected at closing [auto: smoke_island_rooms]
 - [ ] Icon stays on edit (v1.33.4): rebinding a device (HA device/entity) or
       changing its room within the same space never moves the icon — the saved
       or auto position migrates to the new marker id; only a brand-new icon or
       a move to another space centers it in the target room [auto: smoke_marker_stay]
 - [ ] Icon picker placeholder (v1.33.3): with no explicit icon the device
       dialog's icon picker shows the auto-derived icon as its placeholder, plus
       an "Auto: mdi:..." hint line with the icon preview; the hint disappears
       once an explicit icon is picked [auto: smoke_icon_placeholder]
 - [ ] No Reset button (v1.33.2): the Device editor toolbar has three tools —
       add, show all, icon rules; the layout-wiping Reset is gone [auto: smoke_editor_tabs]
 - [ ] Grid in all editors + decor fade (v1.33.1): the dot grid shows in the
       Device and Background editors too (instant "I'm editing" cue), not in
       View; in the Background editor rooms/devices/openings/labels fade to 35%
       while decor shapes stay fully opaque; no fade in the other editors [auto: smoke_decor / smoke_grid_fade]
 - [ ] Background editor (v1.33.0): third tab with its own toolbar (select /
       line / rect / oval / text / erase + color, width, fill, X); shapes drag-
       drawn with grid snap and live preview; degenerate shapes dropped; text
       via dialog (S/M/L, color; dblclick re-edits); Select moves (snap), Delete
       removes, Erase deletes on click; Esc: draft → selection → select tool →
       View; decor renders under rooms, visible everywhere, inert outside the
       editor; stored in space.decor (rev/lock, backend schema) [auto: smoke_decor / smoke_grid_fade]
 - [ ] Opening hover preview (v1.32.1): with the Opening tool, hovering near a
       wall shows a dashed 90 cm ghost snapped onto the wall (with a center
       dot); no ghost far from walls, over an existing opening (click = edit),
       or in other tools [manual]
 - [ ] Split polyline + cursors + Esc (v1.32.0): Merge shows a pointer cursor,
       Split shows pointer until a room is picked then crosshair; the cut can be
       a polyline — start on a wall, intermediate clicks inside the room, finish
       on a wall (path drawn live, walls/self-crossing rejected); Esc walks back:
       last cut point → room pick → back to the Draw tool (same for Merge:
       selection → tool) [auto: smoke_split_polyline]
 - [ ] Merge/split pick highlight (v1.31.2): the first room clicked with the
       Merge tool (and the split-selected room) gets an amber outline + fill;
       visible over the blue markup outlines [auto: smoke_merge_highlight]
 - [ ] Card vs tool conflict (v1.31.1): in the Plan editor, dragging/resizing or
       clicking a room card never feeds the active tool (no draw point, no
       delete-room confirm, no merge/split pick); clicks past the card work [auto: smoke_merge_highlight]
 - [ ] Room cards (v1.31.0): with metrics enabled in space settings (4
       checkboxes: temperature, humidity, avg Zigbee, lights) the room name gets
       a smaller metrics line under it; lights show On/Off or "1 of 3" when
       partially lit; rooms without an HA area show the name only; in the Plan
       editor cards show the name only, are draggable and resizable via corner
       handles on hover (uniform scale 0.5–3, stored in layout, survives drag);
       View mode has no handles/hover [auto: smoke_room_cards]
 - [ ] Esc closes dialogs (v1.30.4): Escape closes the topmost dialog (opening
       info, device info, icon rules, general settings, device editor, opening
       editor, space dialog incl. abandoning an import queue); stacked dialogs
       close one per press; Esc while drawing still undoes the last point [manual]
 - [ ] General settings gear (v1.30.3): the header cog is visible in every mode
       (admins), opens the palette dialog from View too [auto: smoke_gear_tabs / smoke_gs_always]
 - [ ] Editor tabs (v1.30.2): only two tabs — "Plan editor" / "Device editor"
       (no View button; View is the default state); clicking a tab opens its
       bottom toolbar (Devices got its own bar with add/show-all/reset/rules);
       the bar and the active tab both show an X that returns to View; re-click
       on the active tab does nothing; Plan↔Devices switches directly [auto: smoke_editor_tabs]
 - [ ] Space gear (v1.30.1): the cog next to the space name is visible in every
       mode (admins only), vertically centered with the tab text; clicking it
       opens space settings without switching the tab; "+" tab stays Plan-only [auto: smoke_gear_tabs / smoke_gs_always]
 - [ ] Lock action (v1.30.0): opening info card (View) shows Unlock (red) when
       locked / Lock when unlocked; button calls the lock service; disabled while
       locking/unlocking; hidden when unavailable; plan-icon tap still never
       toggles a lock [auto: smoke_gear_tabs / smoke_gs_always]
 - [ ] New-device flag (v1.29.0): a device added to HA after install gets a big red
       dot top-right of its icon (all clients); opening its editor clears it
       everywhere; upgrade/first-run seeds the baseline silently — no dot flood [auto: smoke_new_device]
 - [ ] No devices at all in HA (fresh instance) → plan renders, "0 dev.", no console errors [auto: smoke_new_device]
 ## Device dialog (markers) ★
 - [ ] Open via info card → Edit; all fields persist (name, icon, model, link, description)
 - [ ] Rebind to another device/entity/helper: search filters; already-placed candidates excluded; old position cleaned up [auto backend]
 - [ ] Virtual device: requires name; room required; renders dashed
 - [ ] Sub-area rooms (v1.28.0): a room WITHOUT an HA area appears in the marker
       room list ("no area, manual"); a device placed there lands at its centre,
       the marker stores room_id, reopening the dialog restores the choice [manual]
 - [ ] Room override moves the icon to the room center
 - [ ] Tap-action override select (default/info/more-info/toggle) saves and applies
 - [ ] PDF/manual upload: ok path; >50 MB → readable error; .exe → bad-ext error [auto backend]; traversal names sanitized [auto backend]
 - [ ] `javascript:` in the link field is not rendered as a clickable link [manual]
 - [ ] Remove: auto device → hidden marker (reappears via dialog "show all"? no — stays hidden until re-added); virtual → gone incl. its layout entry [auto backend]
 ## Icon rules ★
 - [ ] ⬡ opens the editor with current rules (defaults if none saved)
 - [ ] Test field resolves live; add/delete/reorder rows; first match wins [manual]
 - [ ] Invalid regex highlights red and is skipped at runtime (other rules still work) [manual]
 - [ ] Reset to defaults; saving defaults stores nothing (settings key removed) [manual]
 - [ ] Custom rules re-icon existing devices immediately; per-device icon override still wins; lock devices keep mdi:lock [manual]
 - [ ] Rules survive reload; second browser sees them after live-sync
 ## Tap actions & gestures ★
 - [ ] Default: tap → info card; card option `toggle`: tap toggles lights/switches/fans/humidifiers only [manual]
 - [ ] Locks/alarms never toggle, even with per-device override [manual]; covers/valves toggle only with explicit per-device override [manual]
 - [ ] Long-press (600 ms) always opens the info card, also when tap=toggle [manual]
 - [ ] Drag > 3 px cancels both tap and long-press; pinch/pan never triggers taps
 - [ ] `pointercancel` (touch interrupted) does not leave a phantom info card [manual]
 ## Zoom / pan / labels
 - [ ] Wheel zoom at cursor; +/− buttons; fit button resets; badge shows %
 - [ ] Pinch zoom + two-finger pan on touch; one-finger pan when zoomed
 - [ ] Zoom level persists per space (localStorage), restored on reload
 - [ ] Window resize / sidebar collapse refits without distortion
 - [ ] Room name labels: default at room center; dragging moves and persists (server layout, `rl_*`) [manual]; hidden in markup mode
 - [ ] Labels legible on light and dark plans (no text shadow) at min/max zoom
 ## Multi-client & concurrency ★
 - [ ] Two browser tabs: drag in A → position appears in B without reload (live event)
 - [ ] Config edit collision: stale tab saving gets a conflict toast, auto-resyncs, retry works [auto backend]
 - [ ] Point layout updates from two windows don't overwrite each other's icons [auto backend]
 - [ ] `admin_only` ON: non-admin user gets readable "administrators only" errors on every write path
 ## Edge cases
 - [ ] HA instance with zero devices/areas → onboarding works, rooms can be drawn, no crashes [manual]
 - [ ] Space with zero rooms → renders; markup hint visible
 - [ ] Room without area + borders ON → drawn, click does nothing, no area tooltip signal
 - [ ] No zigbee devices anywhere → no LQI badges, lqi fill leaves all rooms unfilled [manual]
 - [ ] 100+ devices in one space → build under ~50 ms [manual], drag stays smooth
 - [ ] Very long device/room names → ellipsis/wrap, no layout explosion
 - [ ] HTML/emoji in names (`<b>xss</b>`, 🚿) → rendered as text, never as markup [manual]
 - [ ] Plan file deleted from disk → Repairs issue appears after config save/restart; re-upload clears it [auto backend]
 - [ ] Corrupted `.storage/houseplan.config` → entry retries (ConfigEntryNotReady), no crash loop [auto backend]
 - [ ] HA restart while a dialog is open → next save gets a clean error/conflict, no data loss
 - [ ] Legacy layout entries (v1 {x,y} without space) are ignored gracefully
 - [ ] Kiosk cold start on mobile app: card defined before dashboard render (resource registration)
 ## Release regression quickies
 - [ ] Browser console has zero errors from houseplan-card.js on: dashboard load, markup, dialogs, zoom
 - [ ] HA log has zero houseplan errors/warnings after restart
 - [ ] `npm test` (frontend), `pytest tests_backend` (pure), CI HA-harness — all green
 - [ ] README screenshots/GIF still match the current UI (synthetic home only)
 ---
 ## Last self-run
 **v1.21.1 (2026-07-16), full audit of v1.16–v1.21.** All `[manual]` items pass (73 frontend
 tests, 12 backend). New smokes on the synthetic home: `smoke_merge_split` (merge fuses
 adjacent rooms keeping the survivor's id; non-adjacent refused with a toast; split creates
 the new room, cancel keeps the room whole, along-wall cut refused) and `smoke_split_nonsnap`.
 Finding turned into a fix (shipped this release): **Split required the click to land on a grid
 node**, so it silently failed on rooms whose walls are not grid-aligned (imported/legacy
 polygons) — the click now snaps to the nearest wall instead of the grid, and `splitRoom()`
 still rejects a bad cut. README (en+ru) gained the merge/split/ruler/scale documentation it
 was missing. The earlier self-run record follows.
 **v1.14.0 (2026-07-06), headless demo harness + unit suites.** All `[manual]` items pass
 (43 frontend tests, 11 pure + 12 HA-harness backend tests, `smoke_space_settings`,
 tap/hold/wizard/rules smokes). Bugs found during the run, fixed in the same release:
 . Edit dialog: switching an existing space from image to "draw" kept the old
    background (`plan_url` not detached) — fixed.
 . `_stateClass` crashed on state objects without `entity_id` (domain is now
    derived from `d.primary`, which the state was looked up by) — fixed; found by
    the 150-device perf item of this checklist.
 . Perf item measured: 162 devices build in ~14 ms, re-render ~1 ms — well within budget.
 . (earlier rounds) long-press phantom after `pointercancel`; `_saveConfigNow`
    conflict without resync — fixed in v1.13.2.
 Unchecked boxes above (real browsers/devices, multi-tab live sync, Companion apps)
 require hands on real hardware — they remain for the human pass.
 ## houseplan-space-card (read-only embedded)
 - [ ] `type: custom:houseplan-space-card, space: <id>` renders the space identical to the full
       card's plan (background + configured borders/names + room fills + icons), no header/controls [manual]
 - [ ] The schematic is fully non-interactive: click/hover anywhere does nothing — no more-info,
       no tooltip, no drag (`.hp-static-stage` is pointer-events:none) [manual]
 - [ ] Footer button opens the full component already showing that space (deep-link `#space=<id>`) [manual]
 - [ ] Several cards with different `space` coexist on one board; one shared config WS request
 - [ ] Unknown `space` → tidy error card [manual]
 - [ ] `show_button: false` hides the footer
 - [ ] Full card honours `#space=<id>` on load and on hashchange; invalid id ignored [manual]
 ## Unified device status and activity (dev, owner 2026-08-05)
 - [ ] The Display list contains exactly Icon, Icon + activity, Value instead
       of an icon. Legacy `display: ripple` reads and saves back as `icon_ripple`
 - [ ] Icon shows state plate/morph but no ordinary activity effect; Icon +
       activity adds the semantic effect; Value keeps the state-coloured plate
       and hides ordinary activity
 - [ ] Motion/vibration/sound/contact rising edges render exactly three waves
       for about 3.3 s; initial load and recovery from unknown/unavailable do
       not fake an event; a rapid retrigger restarts it
 - [ ] Occupancy/presence is one calm static ring for the whole active state
 - [ ] Cover/lock/valve movement breathes until the travelling state ends;
       direct terminal `closed ↔ open` / `locked ↔ unlocked` without an
       intermediate state breathes for about 3.3 s
 - [ ] Actual work (light/switch/fan/humidifier on, active climate action,
       media playing, vacuum cleaning, script running) is yellow and slowly
       breathes in Icon + activity; `automation = on` is merely enabled and
       remains neutral
 - [ ] Controls aggregate their targets: any working target drives both the
       yellow plate and the running effect
 - [ ] Open contact/unlocked lock/open valve are orange; an open cover stays
       neutral because its icon morph carries that state
 - [ ] Unavailable suppresses ordinary activity. Alarm outranks all of it,
       remains red in every display mode and with ordinary live states off
 - [ ] Activity colour and size (×2..×8) apply per device; alarm ignores them
 - [ ] Icon size ×0.5..×3 and rotation 0..355° apply per device; the
       temp/humidity badges scale with the icon
 - [ ] With OS "reduce motion" enabled, activity/alarm rings are static
 ## Doors & windows (v1.23.0)
 - [ ] Markup → "Opening": a click away from any wall shows a toast; near a wall — the dialog
 - [ ] A door placed on a wall renders jambs + leaf + swing arc at the wall's angle; length in cm
       matches the ruler/scale of the space
 - [ ] Bind a contact sensor: open → leaf swings and the arc draws on in the accent colour;
       closed → leaf lies along the wall, arc hidden; invert flips this
 - [ ] Sensor unavailable → the opening freezes at its static default (door open / window closed)
 - [ ] A door with a lock shows the padlock badge: green locked / orange unlocked / grey unknown
 - [ ] Clicking an opening (or the padlock) in view mode opens the info card with both states;
       the lock can NOT be toggled from the plan
 - [ ] Flip toggles mirror the hinge side and the swing side
 - [ ] Click an existing opening with the tool → edit dialog; Delete removes it
 - [ ] (v1.23.1) Hovering an opening in view mode shows the accent outline + grab cursor
 - [ ] Dragging an opening slides it along walls (re-snapping, incl. around corners) and saves
       on release; dragging far away from walls leaves it in place; hinge does not flip while
       crossing wall-segment boundaries
 - [ ] Single click still opens the status card; double click opens the properties dialog;
       a drag does NOT open either
 ## Live vacuums (docs/VACUUM.md)
 - Docked robot: only the base marker, at the user-placed spot (the dock).
 - Cleaning + calibrated map: a round pulsing puck — the base badge but
   circular and 20% smaller, same plate colors, glyph dead-centre — drives
   the plan; the base marker never moves. No heading arrow.
 - Puck motion: glides ~1.2 s between telemetry points; TELEPORTS (no glide)
   on zoom, pan, space switch, browser-tab return, and after a >10 s data
   gap. Stale coords (>60 s while cleaning) freeze and dim it.
 - «Показывать путь робота» has three modes: never / while cleaning (default
   — the line hides the instant the run ends) / always (the only mode that
   also shows the previous run at 40% opacity).
 - The trail is server-recorded (trails.py watches the source entity; two
   runs kept per marker, survives reloads, shared by every screen) and never
   outruns the icon: drawn segments lag one point, and the last segment is a
   rAF-driven tip glued to the puck centre every frame.
 - Trail style: cartography casing (dark halo 2.25 + light core 0.9),
   readable over any room fill.
 - Hidden marker: neither puck nor trail. Uncalibrated active map: no puck.
 - Calibration: «Настроить автоматически» (≥3 rooms matched by name) or the
   fit panel — drag the dashed room ghost, stretch by 4 corner handles,
   rotate 90°/mirror buttons (mirror ON by default), Save/Cancel/Esc. Real
   clicks must land on the overlay (elementFromPoint smoke guards it).
 - Multi-floor: one matrix per robot map (Dreame `selected_map` on the
   vacuum entity names the active one).
 ## Room resize (docs/RESIZE.md)
 - [ ] The «Размер» tool appears in the Plan editor toolbar; in EVERY other
       tool (and in Devices/Decor/View) there is not a single `.rszhandle`
 - [ ] Handles sit at the midpoint of every wall of every room; they are
       finger-sized, capture the pointer and never start a stage pan
 - [ ] Dragging a handle moves the wall along its normal, both edge ends
       together; the wall line snaps to the drawing grid
 - [ ] A wall fully shared with a neighbour drags the neighbour's wall with
       it — the neighbour shrinks/grows, no gap and no overlap can appear
 - [ ] A partially shared wall (T-junction) moves only the coinciding
       stretch: the neighbour becomes L-shaped (new vertices), shown live
 - [ ] Legacy x/y/w/h rectangle rooms resize the same way and are saved back
       as polygons
 - [ ] Live badges while dragging: lengths of the dragged wall + both
       adjacent walls, and the m² area at the room centre; dragging a shared
       wall shows BOTH areas; all numbers update continuously
 - [ ] Stops: ~30 cm minimum for the own room AND the shrinking neighbour;
       a foreign room in the path (touch is ok, overlap never); islands
       inside; a door/window on a shortening wall (the wall corner can not
       pass the opening edge)
 - [ ] A door/window ON the moving wall travels with it (openings x/y
       recompute; angle unchanged)
 - [ ] Esc mid-drag cancels: the original geometry is back instantly
 - [ ] Click a room in the resize tool → dashed bbox frame with 4 corner
       handles; dragging a corner scales all vertices proportionally about
       the opposite corner; neighbours are NOT dragged along (the one
       exception to «shared walls together»), growing into one stops
 - [ ] Ctrl+Z / ⌘Z after releasing a handle restores the previous geometry —
       one release = one undo step (rooms AND openings)
 - [ ] A moved shared wall with a partial virtual middle and thick solid
       remainders keeps the dash and both thickness values during live drag and
       after release; Undo restores rooms, `open_spans` and `walls` together
       [auto: smoke_resize_virtual_thick]
 - [ ] Device markers do not move; the room settings gear re-centres itself
 - [ ] Smoke: `node demo/smoke_room_resize.mjs`
 ## Sun on the plan (docs/SUN.md)
 - [ ] Everything below is INERT until `north_deg` is set (general ⚙ or the
       space settings) AND the install has `sun.sun`; both dialogs hint at
       whichever is missing
 - [ ] The ⚙ compass: dragging the «N» arrow turns it in 1° steps (15° with
       Shift); the number field mirrors the dial and accepts 0–359; «Clear»
       returns the unset state
 - [ ] «Plan background» selector: `static` keeps the existing color picker
       and behaviour byte-for-byte; `daynight` hides the picker and the stage
       follows the sun — neutral day, warm golden hour, dark night — with a
       slow (tens of seconds) transition; the PLAN dims only ~10% at night
 - [ ] Opaque plan paper (2026-08-03, owner): the scene background —
       `bg_color` or the daynight sky — is visible ONLY around the plan and
       NEVER bleeds through it, in view/kiosk/editors and on the static
       space-card. An image plan papers the backdrop image rect
       (`rect.hp-paper`). A hand-drawn plan papers the ROOM CONTOURS: one
       `.hp-paper` shape per room in exactly the room's own geometry (fill
       only, no stroke), so an L-shaped house or detached buildings never
       grow a white bounding rectangle — the scene colour reaches the
       exterior walls, shows in the L's pocket and between buildings, and an
       empty drawn space has no paper at all. A live resize preview
       (`_rszPreview`) moves the paper together with the dragged wall.
       Colours: historical white for drawn plans, the theme card background
       under an image. At night (`daynight`) the paper dims via the zoomwrap
       `brightness` filter only — its alpha stays 1. Pixel-proofed against
       an acid `#ff00ff` background [auto: smoke_bg_color]
 - [ ] Per-space overrides (background mode, north, sun-in-windows) inherit
       when empty, exactly like show_lqi/fill_mode
 - [ ] «Sunlight through windows» (default OFF): wedges appear only from
       windows on EXTERIOR walls facing the sun; interior windows, open
       (virtual) boundaries and doors never light up
 - [ ] Wedge direction follows the compass; length grows toward
       sunrise/sunset and shrinks toward noon; every wedge is clipped by its
       room polygon; night = no wedges at all
 - [ ] With wall thickness, both crisp side edges start at the two room-side
       corners of the window opening (the full span translated inward by half
       the wall depth), including at an oblique sun angle; no edge starts on the
       wall centreline [auto: unit `sun.test.mjs` + `smoke_wall_thickness`]
 - [ ] Brightness + the 3° threshold (2026-08-03): wedges are visibly brighter
       (peak alpha 0.30, was 0.18) yet still readable over white paper AND the
       dark glow canvas; there is NO gradual ramp near the horizon — below 3°
       no rays at all, at/above 3° full strength; crossing the threshold fades
       the whole layer in/out over exactly 2 s (CSS on `.sunlayer`, the
       geometry never moves), and `prefers-reduced-motion` makes it instant.
       Every other way of losing the wedges (editor, feature off, night, rain)
       stays instant [auto: smoke_sun «the 3° threshold» + unit rayAlpha/
       raysVisible/rayPeakAlpha; shots: demo/shot_sun_bright.mjs]
 - [ ] Weather entity (optional, global): cloudy fades the wedges, rain/snow
       removes them, a dead/unknown weather sensor changes nothing
 - [ ] Sun geometry recomputes ONLY when the sun attributes or the config
       change — an unrelated `hass` tick reuses the memo
 - [ ] Editors (plan/devices/decor) render with NO wedges and NO day/night;
       kiosk works; the static space-card honours the background mode
       (wedges are full-card-only in v1)
 - [ ] `prefers-reduced-motion` → no transitions, static colors
 - [ ] Smoke: `node demo/smoke_sun.mjs`; units: `test/sun.test.mjs`;
       backend: `tests_backend/test_validation.py` (sun settings)
 ## Climate temperature opt-in (dev)
 - [ ] «Use the device's temperature sensor» (marker dialog, climate devices
       only, default OFF): current_temperature shows as the standard `.tval`
       badge and joins the room average like a thermometer; unavailable /
       missing attribute = no badge, no vote; hidden devices keep voting
       (registry-wide climate, like hidden thermometers); the tick survives
       dialog recreation [auto: smoke_climate_temp; units: test/devices.test.mjs;
       backend: tests_backend/test_validation.py (use_climate_temp)]
 ## Infinite canvas (docs/CANVAS.md, dev)
 - [ ] **A plan drawn past the old square opens whole**: a space whose rooms
       live at normalised 1.5..3.0 renders complete and centred (it used to
       frame empty canvas with the house off-screen) [auto:
       smoke_infinite_canvas; units: test/canvas.test.mjs]
 - [ ] **Nothing stops at an edge any more**: in the Plan / Devices / Decor
       editors a room, a marker and a decor shape can be drawn, dragged and
       SAVED far outside `0..1`, on any floor; reload keeps them there
       [backend: tests_backend/test_validation.py::test_infinite_canvas_range]
 - [ ] **A typical small plan is visually unchanged** — same framing, same
       room and label positions as before the feature. The ONE intended
       difference is icon size (below) [auto: smoke_infinite_canvas
       (legacyFrameUnchanged); the whole smoke suite is the regression net]
 - [ ] **Icons no longer grow with zoom** (§6, owner is aware): a marker keeps
       the same pixel size at zoom 1, 4 and at the zoom-out floor; the
       per-device size multiplier, kiosk icon/font scales, badges, LQI chips
       and presence rings all still scale from `--dev-size`
 - [ ] **Start view follows the content**: opening a space frames what is
       drawn plus a small margin, on every floor, with and without a backdrop
       image (with one the IMAGE sets the extent — it must not be cropped to
       the outlined rooms)
 - [ ] **What is not drawn does not frame** (audit DEV-2C947-01): tick «hide
       from plan» on a marker standing far from the house and the view snaps
       back to the house — the hidden marker neither renders nor stretches the
       frame, on the full card and on `houseplan-space-card`. Untick it and the
       frame takes it in again; room LQI counted it the whole time
       [auto: smoke_canvas_frame]
 - [ ] **The editor frame does not follow you out** (audit DEV-2C947-02): move
       the only room five canvases away in the Plan editor (the frame grows
       there, deliberately), close the editor — View frames the room where it
       is NOW, not the union with where it was; re-entering the editor starts
       from the current geometry [auto: smoke_canvas_frame]
 - [ ] **A far stray does not inflate the icons either** (audit DEV-2C947-03):
       one ROOM dragged an order of magnitude away is rejected from the frame
       (as before) and the markers of the main plan keep the size they have
       without it; auto-placement spacing goes with them
       [auto: smoke_canvas_frame + unit canvas.test.mjs]
 - [ ] **A far stray does not break the view** (§4.1): a marker dragged an
       order of magnitude away leaves the opening view alone and raises the
       inline chip «Объектов далеко от плана: N» with «Показать». No modal.
       «Показать» fits the plan AND the stray; the chip then disappears
 - [ ] **«Вписать всё»** (middle zoom button): fits the content from any pan
       and any zoom, is never disabled, tooltip en/ru
 - [ ] **Zoom-out floor**: the wheel / the minus button stop at three times the
       content frame; zoom-in still stops at 800 %
 - [ ] **Pan has slack, not walls**: you can pan a full screen past the plan in
       every direction; when the plan is fully off screen a small arrow points
       home and one click fits it back
 - [ ] **Pan at ANY zoom** (owner's report 2026-08-04): dragging empty scene
       moves the view at 100 %, at 50 % and at the zoom-out floor — in View and
       in all three editors, with every plan tool selected. The tools keep the
       pointer they own (a resize handle resizes, a device badge in the Devices
       editor moves the device, an opening slides along its wall — none of them
       pan), two fingers still pinch, and on a kiosk screen a horizontal drag
       is still the floor swipe (a vertical one pans) [auto: smoke_pan_any_zoom]
 - [ ] **Kiosk: a pan stays a pan to the very end** (dev, audit DEV-1DA1-02):
       on a wall tablet at 100 % start a drag with a small VERTICAL lead-in
       (the plan starts following the finger — the gesture is locked as `pan`),
       then curve it far to the left or right and lift. The floor must NOT
       change: the decision taken on the first movement is final, and only a
       gesture locked as a swipe may switch storeys. Mirror check: a horizontal
       lead-in locks the swipe — the plan never slides under it, and if the
       trajectory then bends vertically and no longer qualifies as a swipe, the
       gesture simply does nothing (it does not turn into a pan). Straight
       swipes still switch, straight vertical drags still pan, a motionless
       double tap still resets the zoom [auto: smoke_kiosk_pan_lock]
 - [ ] **Adaptive grid** (§7): in the Plan editor zoomed far out the grid does
       not merge into a grey wash — fine dots thin out, every 5th/10th node
       stays bigger; zoomed in the grid is the usual one and snapping still
       lands on the same nodes as before
 - [ ] **Everything else on a far-out plan**: sun wedges, glow radii, open
       boundaries, room resize handles/rulers, opening rulers, split/merge,
       vacuum trails, the static `houseplan-space-card` and kiosk carousel all
       behave exactly as on a plan inside `0..1`
 - [ ] **Real config regression**: a production config (e.g. the dacha, 3
       floors / 106 markers) frames bit-identically to the previous release —
       no outliers reported, no frame movement
 ## Batch 2026-08-04 (dev, unreleased)
 - [ ] **Room borders have no teeth** (owner 2026-08-04): draw a room with a
       sharp corner (a wedge with a 30-60° apex, or an L) — the corner is
       ROUNDED off by the stroke's own radius, never a spike sticking out past
       the two walls and never a flat bevel. Same in the plan View, in the Plan
       editor and on the static `houseplan-space-card`; a room with OPEN
       boundaries (its trimmed outline) has round corners too
       [auto: smoke_render_parity, still: demo/shot_room_joins.mjs]
 - [ ] **The Background editor measures what you draw** (owner 2026-08-04, «в
       редакторе подложки у линий писать длину»): while a decor LINE is being
       dragged out, a badge on the MIDDLE of the segment shows «length · angle»
       in the HA unit system (`cell_cm`, metres or feet) and turns green on a
 ° multiple — exactly the badge a wall gets in the Plan editor. It
       updates on every move, is absent before the drag has any length, and is
       gone the moment the shape is committed. Rectangles and ovals show their
       bounding box «W × H» instead [auto: smoke_decor]
 ## The text block on the plan (docs/LIVE-TEXT.md, dev, unreleased)
 - [ ] **One text, many HA variables**: write `Бак {sensor.tank}, зал
       {climate.hall:current_temperature}` — both values render and update
       independently. The hand-written dotted attribute form
       `{climate.hall.current_temperature}` works too; ordinary/invalid braces
       stay literal [auto: smoke_live_text + unit logic.test]
 - [ ] **Picker inserts at the caret**: put the cursor between two words, choose
       an entity and then its state/attribute — the full token appears exactly
       at that selection and focus returns immediately after it. Continue typing
       and insert another variable until the textarea's 200-character limit
       [auto: smoke_live_text]
 - [ ] **No separate unit/preview/single-slot UI**: the dialog has none of the
       old unit field, `{}` hint, or preview block. State units come from HA;
       attributes do not inherit the state unit, and a custom suffix is ordinary
       text after the token [manual]
 - [ ] **A dead sensor says so**: make the entity unavailable (or delete it) —
       the value becomes «—» and the rest of the caption stays. The dash carries
       no unit [auto: smoke_live_text]
 - [ ] **Nothing is rounded**: a sensor reporting `23.94781` shows `23.94781`.
       Rounding is the sensor's `display_precision`, not ours [auto:
       smoke_live_text]
 - [ ] **Old links migrate on edit**: a stored beta.9 `text + entity/attr/unit`
       label still renders unchanged. Open it: the inline token is visible in
       the textarea; save it and only the new text template remains
       [auto: smoke_live_text]
 - [ ] **The same everywhere**: the label reads identically in View, in the
       editors and on a kiosk screen [auto: smoke_live_text]
 - [ ] **No font-size choice any more**: the dialog has no Small/Medium/Large.
       Select a label and pull a corner — the text scales uniformly about its
       anchor; the handle above it turns the block in 5° steps, Shift for any
       angle. Rotating back to zero leaves a straight label
       [auto: smoke_decor_text]
 - [ ] **Old labels keep their size**: a plan made before the handles renders
       its Small/Medium/Large labels at exactly the old 14/20/30 px, and the
       first corner drag converts that setting into the scale it meant
       [auto: smoke_decor_text + unit logic.test]
 - [ ] **Enter is a new line**: type two lines in the dialog (Ctrl/⌘+Enter or
       the button saves) — the plan shows two lines, centred, growing around the
       anchor. A very long single line is NOT wrapped for you
       [auto: smoke_decor_text]
 - [ ] **The text tool edits the label under the cursor**: with the text tool
       selected, press an existing label — its form opens, prefilled, and no
       second label is created. Press empty canvas, or a line/rectangle, and a
       NEW label is created there instead (non-text shapes stay inert under
       drawing tools) [auto: smoke_decor_text, smoke_decor]
 - [ ] **A label is still a caption, not a device**: no tap action, no icon, no
       part in room averages; it is not offered in any of the device pickers
       [manual]
 - [ ] **Grazing sunlight** (dev, audit DEV-EB173-01): with `sun_rays` on, set
       the sun almost ALONG a wall carrying a window (e.g. a west window,
       azimuth 190°, elevation 90° at north_deg 0). The shaft is a true
       parallelogram — both sides exactly as long as the nominal reach, 70 % of
       the pre-v1.57 curve — the whole pane of glass is at FULL brightness (no
       end of the window starts out transparent), and the light fades along the
       ray, dying out before the far edge. A sun within ~3° of the wall plane
       (`RAY_MIN_COS`) casts nothing at all [auto: smoke_sun_soft + unit sun.test]
 - [ ] **Nothing stops at the old canvas border** (owner 2026-08-04, DEV-B58-01:
       «названия комнат и устройства не перетаскиваются дальше старых границ
       холста»). On an ORDINARY plan (rooms inside 0..1), in the Devices editor
       drag a marker far outside the drawing — to about 2.5 / 2.2 normalised. It
       follows the cursor the whole way, the position is stored, the plan's frame
       grows to include it, and it is still there after a reload. Repeat with a
       room NAME in the Plan editor (this one used to stop at the old unit square
       exactly), with a decor shape in the Background editor (draw it far out,
       then drag it further), and with an opening on a wall that lives past the
       old square. The only thing that still stops you is ±5000 — drag wildly and
       the marker parks there instead of at 1e12 [auto: smoke_drag_bounds]
 - [ ] **Everything lands on the grid** (owner 2026-08-04, docs/CANVAS.md §9):
       place a device, a room name, a decor rectangle, a decor text, a room
       vertex and a resize handle with the mouse — each ends exactly on a grid
       node, never between two. An opening is the one exception and deliberately
       so: it stays ON its wall, at a whole number of steps along it. Hold
       **Shift** while dropping and the element lands where the cursor is,
       off-grid — that is the only way to get there [auto: smoke_grid_snap]
 - [ ] **«Выровнять всё по сетке»** (owner 2026-08-04): gear → general settings →
       **Grid** → the button. On an already tidy plan it says everything is
       already on the grid and offers no confirm button. On a plan with elements
       between the nodes it names how many will move and the largest shift in cm,
       and warns there is no undo. Press it: rooms, decor, markers and room names
       snap to nodes in ONE write, openings stay on their walls, and pressing the
       button a second time reports nothing to do. Cancel does nothing at all
       [auto: smoke_grid_snap + unit test/align-grid.test.mjs]
 ## Backdrop picture: move & scale (docs/BACKDROP.md, dev)
 - [ ] **The frame is there, and only there** (owner 2026-08-04): open a space
       that HAS an uploaded plan image → **Редактор подложки**. A dashed frame
       hugs the picture straight away, with four round corner handles, and the
       toolbar has gained a «Картинка-подложка» tool. Switch to Line /
       Rectangle / Oval / Text / Erase — the frame disappears (those tools own
       the drag). Leave for View, the Plan editor, the Device editor and the
       kiosk — no frame anywhere. A space with NO image never shows one, and
       its toolbar has no extra button [auto: smoke_backdrop, smoke_decor]
 - [ ] **The picture tool is already armed** (owner 2026-08-05, «не получается
       двигать картинку-подложку»): open **Редактор подложки** on a space that
       HAS a picture — «Картинка-подложка» is the selected tool, the hint about
       dragging is in the toolbar, and the picture moves on the FIRST drag,
       without picking anything. A space with no picture opens on «Выбрать» as
       before, and Esc still returns to «Выбрать» [auto: smoke_backdrop,
       smoke_hide_layers]
 - [ ] **The corner handles are beads, not blobs** (owner 2026-08-05,
       «уменьшить в 4 раза… они постоянно гигантские»): the four dots on the
       picture's frame are small — they must not cover the picture — yet a
       finger still lands on them without aiming. Same on the room-resize
       frame (Plan → «Размер», click a room) and on the robot-map calibration
       [auto: smoke_hide_layers, smoke_backdrop, smoke_room_resize]
 - [ ] **Dragging the picture moves the picture, and nothing else** (owner
 -08-04): with the «Картинка-подложка» tool (the cursor over the
       picture is a hand), grab the picture by its body and pull it aside.
       It follows the finger the whole way — it must NOT drift away from the
       cursor or jump when the toolbar changes — while the rooms, walls, doors,
       windows, devices, room names and decor stay exactly where they were.
       Release, reload the page — the picture is still where you left it
       [auto: smoke_backdrop]
 - [ ] **One-finger pan survives** (regression, DEV-B58 «таскать план при любом
       масштабе»): back on the «Выбрать» tool, drag across the middle of the
       picture — the PLANE pans, the picture does not move. Same at 50 % and
 % zoom [auto: smoke_backdrop, smoke_pan_any_zoom]
 - [ ] **The corners scale it evenly**: pull a corner handle. The picture grows
       and shrinks in BOTH directions at once, keeps its proportions (nothing
       is stretched), and the OPPOSITE corner does not move a pixel. Try all
       four corners; the cursor over a handle is a diagonal resize arrow. On a
       tablet the handles are big enough to hit with a finger [auto: smoke_backdrop]
 - [ ] **Live size in metres**: while dragging or scaling, a badge in the middle
       of the picture states its real size, «Ш × В», in the same units the wall
       ruler uses (metres, or feet on an imperial HA). Change the space's
       `cell_cm` in its settings and the numbers change with it. The badge
       disappears on release [auto: smoke_backdrop]
 - [ ] **Snap, and Shift**: after a plain drag the picture's corner sits on a
       grid node (zoom in on the corner — it is on a crossing, not between
       two). After a corner scale one side of the picture ends on a node too.
       Hold **Shift** during the gesture and it lands exactly where the cursor
       is instead [auto: smoke_backdrop]
 - [ ] **«Вернуть картинку»**: the button appears in the backdrop toolbar only
       after the picture has been moved or scaled. Press it — the picture goes
       back to centred, at its own size, and the button disappears again
       [auto: smoke_backdrop]
 - [ ] **NEW PAPER RULE — the sheet is the rooms** (owner 2026-08-04, changes
       the old behaviour): set a loud `bg_color` (or `daynight`) on a space
       that has BOTH a picture and drawn rooms, then shrink the picture with a
       corner handle. The opaque white/card-coloured sheet follows the ROOM
       CONTOURS — it is no longer a rectangle the size of the picture. The
       scene colour is visible around the rooms, including in the pocket of an
       L-shaped house and between detached buildings. The picture is drawn ON
       that sheet: above it, below the walls, doors, decor and devices. A space
       with a picture and NO rooms has no sheet at all, so a transparent PNG
       shows the scene through itself — deliberate
       [auto: smoke_backdrop + smoke_bg_color, still: demo/shot_backdrop.mjs]
 - [ ] **«Вписать всё» does not lose the picture**: drag the picture well away
       from the rooms (or scale it right down), leave the editor, press «Вписать
       всё». The view frames the rooms AND the picture; the "home is that way"
       arrow points at them together [auto: smoke_backdrop]
 - [ ] **The static card and the kiosk agree**: put a `houseplan-space-card` for
       the same space on a dashboard and open the kiosk view. Both draw the
       picture at the same offset and size, with the same room-contour paper
       [auto: smoke_backdrop, smoke_render_parity]
 - [ ] **Old plans are untouched**: a space whose picture has never been moved
       renders exactly as before the update — same place, same size. Nothing is
       written to its config until the first drag [auto: unit test/backdrop.test.mjs
       + tests_backend/test_validation.py]
 ## Sun ray rim (docs/SUN.md «The rim», dev, unreleased)
 - [ ] **A ray reads on white paper**: with `sun_rays` on and a LIGHT scene
       (`bg_mode: daynight` at midday, or a white plan), a lit wedge is bounded
       by a thin dark hairline along its two SIDE edges — the ones running
       inward from the ends of the window. There is NO line across the glass and
       none across the far end; the hairline fades out with the light and is
       already gone before the wedge's tip [auto: smoke_sun_rim]
 - [ ] **It stays a hairline**: zoom the plan all the way in and all the way out
       — the line is one pixel wide at every zoom, never a growing black band.
       Check on a phone and on a kiosk display too [auto: smoke_sun_rim
       (`non-scaling-stroke`), still: demo/shot_sun_rim.mjs]
 - [ ] **It is not an outline on a dark scene**: switch to the glow fill or
       night — the rim is a subtle darker edge on the shaft, not a drawn contour
       around it [manual, visual]
 - [ ] **It lives and dies with the wedge**: below 3° it goes with the wedge in
       the same two-second fade (not a frame before, not a frame after); rain or
       an overcast `weather_entity` takes it away with the light; the editors
       show neither; the kiosk and the plan view agree
       [auto: smoke_sun_rim + smoke_sun]
 - [ ] **A wall still stops it**: point the sun so a shaft runs into the
       opposite wall or into the inner corner of an L — the hairline stops on
       the wall exactly where the wedge does, and never continues into the next
       room [auto: unit sun.test «a room that cuts the shaft cuts the rim»]
 ## «Already uploaded» plan picker (dev, unreleased)
 - [ ] **«Already uploaded» is a list, not a stripe**: in both space dialogs
       (new space and space settings, source = "I have a floor-plan image")
       press «Already uploaded» with at least five plans on the server. The box
       is a few hundred pixels tall, the first thumbnail is fully visible inside
       it, and the rest scroll. With nothing uploaded the box shows its message
       instead of clipping it. Repeat at phone width. Measure heights, do not
       trust the DOM: the rows were always there, the box was 14 px
       [auto: smoke_plan_picker]
 ## «+» adds a space from anywhere (dev, unreleased)
 - [ ] **The button is where the floors are, always**: as an admin, open the
       card in View — the «+» sits at the end of the tab row next to the floor
       names, is at least icon-sized and actually hittable (nothing overlaps
       it), and opens the NEW-space dialog. Repeat in all three editors (Plan,
       Devices, Background): the same button in the same place, not only in the
       Plan editor as before [auto: smoke_gear_tabs]
 - [ ] **A kiosk has no «+»**: a card with `kiosk: true` does not RENDER the
       button at all — checking that the header is `display:none` is not
       enough, a hidden node is still clickable from script [auto: smoke_gear_tabs]
 - [ ] **The tab row still fits a phone**: at 390 px the row wraps, nothing
       scrolls sideways out of the card, and the «+» stays inside the card and
       hittable [auto: smoke_gear_tabs measures `scrollWidth` vs `clientWidth`]
 - [ ] **A non-admin never sees it**: the button follows the same rule as the
       per-space gear (`_canEdit`) [manual, needs a non-admin HA user]
 ## Coming back to the tab (docs/WARM-REMOUNT.md, dev, unreleased)
 - [ ] **The view does not twitch**: pan the plan into a corner and zoom in
       (say 2.5×), leave the tab for long enough that HA reconnects, come back —
       the plan is in exactly the same place at exactly the same scale. Not
       «about the same»: the restored viewport is the same rectangle, and the
       smoke compares it frame by frame [auto: smoke_warm_dialogs]
 - [ ] **The same inside an editor**: do it while the Devices editor is open at
       a working zoom (say 350 %) — the editor and its zoom both come back
       (before the fix the mode came back and the zoom fell to 100 %). Leaving
       the editor afterwards still restores the view-mode viewport
       [auto: smoke_warm_dialogs]
 - [ ] **An open dialog stays open**: leave the tab with the space settings (or
       a device card) open and a field edited but NOT saved — on return the
       dialog is still there with the same draft [auto: smoke_warm_dialogs]
 - [ ] **A closed dialog stays closed**: close it with Esc (or Cancel, or Save)
       and only then leave the tab — nothing reopens on return, and it does not
       reappear on a second reconnect either (the snapshot is consumed once)
       [auto: smoke_warm_dialogs]
 - [ ] **Confirmations are never resurrected**: open «Align everything to the
       grid», leave the tab, come back — the confirmation is GONE and the plan
       is untouched. Same for the room-merge confirmation. This is deliberate:
       a modal whose whole content is «press OK to rewrite your plan» must not
       be waiting under a returning user's cursor [auto: smoke_warm_dialogs]
 - [ ] **Nothing is revived into the wrong place**: switch to another floor (or
       another editor) after the reconnect — a dialog that belonged to the old
       space/mode does not appear there [auto: smoke_warm_dialogs (space/mode
       guard), manual for the floor switch]
 - [ ] **A save in flight is not offered twice**: press Save in the space dialog
       and reload/reconnect during the write — the dialog does not come back
       with a live Save button; the reloaded config shows the outcome [manual]
 - [ ] **Two identical cards keep to themselves**: put the SAME card config
       twice on one view, park one in the Devices editor at 350 % and leave the
       other in View with an unsaved space dialog, then force a rebuild — each
       card comes back with its OWN floor, mode and zoom, and the draft returns
       to the card that owned it, not to its neighbour (AUD-159B1-01)
       [auto: smoke_warm_owners, section A]
 - [ ] **Two dashboard views keep to themselves**: the same card config on two
       views of one dashboard — switching between them never carries a viewport
       or a dialog across (`location.pathname` is part of the key) [manual]
 - [ ] **A rebuild storm keeps the draft**: a dashboard that rebuilds twice in a
       row (config churn, a flapping websocket) still returns the unsaved dialog
       — the draft travels down the chain of instances (AUD-159B1-02)
       [auto: smoke_warm_owners, section B]
 - [ ] **A forgotten draft frees its plan file**: open the space dialog with a
       plan chosen, leave the view and do not come back — after the 10-second
       TTL the memo no longer holds the dialog (a plan is base64 in memory), and
       nothing revives afterwards (AUD-159B1-03)
       [auto: smoke_warm_owners, section C]
 ## Styling hooks and HA-formatted values (docs/STYLING-HOOKS.md, dev, unreleased)
 - [ ] **The hooks are there and they are the config's ids**: open the plan's
       DOM (devtools → the card's shadow root) and check that a device marker
       carries `data-hp="device"`, `data-id`, `data-entity` and `data-area`; a
       room `data-hp="room"` + `data-id` + `data-area`; a door/window
       `data-hp="opening"` + `data-kind`; a decor shape `data-hp="decor"` +
       `data-kind`; a room caption `data-hp="room-label"`; a floor tab
       `data-hp="space-tab"`. The ids are the ones in your config, not DOM
       positions — they survive a reload [auto: smoke_styling_hooks]
 - [ ] **Absent is absent**: a virtual marker has NO `data-entity` at all, and a
       sub-area room (no HA area) has NO `data-area` — never the string
       «undefined» [auto: smoke_styling_hooks]
 - [ ] **A card-mod rule actually applies**: with card-mod installed, add
       `ha-card [data-hp="device"] .lqi { display: none; }` to the card — the
       signal badges disappear and nothing else moves. Then target one marker by
       `[data-entity="…"]` and confirm it is the only one affected [manual]
 - [ ] **The static card carries the same hooks**: a `houseplan-space-card`
       has `data-hp` on its rooms, room labels and markers (it draws no openings
       and no decor, so those are simply absent), and it needs its OWN card-mod
       block — it is a different card with its own shadow root
       [auto: smoke_styling_hooks]
 - [ ] **`ha-icon` internals stay out of reach**: a rule may style the icon HOST
       (colour, transform) but cannot reach the `<svg>` inside it. That is a
       browser rule, and it is why the hooks sit on our wrappers
       [auto: smoke_styling_hooks]
 - [ ] **A value badge is formatted by HA**: set a numeric sensor's display
       precision in HA (Settings → the entity → Display precision) to 1 and put
       it on the plan as «value instead of icon». The badge shows the rounded
       number with YOUR decimal separator and the entity's unit — once, not
       twice — and matches what more-info shows [auto: smoke_value_format]
 - [ ] **A live decor label is formatted by HA**: the same sensor in a text
       shape reads identically; a switch shows «Включено», not `on`; an
       attribute goes through the attribute formatter (a climate's
       `current_temperature` is a number, not the climate's state)
       [auto: smoke_value_format + unit logic.test]
 - [ ] **A literal suffix stays literal**: write an attribute token followed by
       ` проц.` — the suffix is part of the text, with no hidden unit override
       and no duplicate appended by the label renderer [auto: smoke_live_text]
 - [ ] **An older Home Assistant is unchanged**: on an HA without
       `formatEntityState` the badge and the label print the raw state with the
       entity's unit appended, exactly as before — nothing is blank and nothing
       throws [auto: smoke_value_format + unit logic.test]
 - [ ] **The °/% plates are untouched**: the small temperature/humidity badges
       next to an icon (and the same numbers in a room card and the tooltip)
       still read «21.5°» / «48%». They are a derived reading, not an entity
       state — deliberately ours [auto: smoke_value_format]
 - [ ] **The text block's handles are small but still catchable**: select a
       label in the Background editor. The four corner circles and the rotate
       handle are a quarter of their old size — beads, not buttons — and the
       dashed frame no longer hides the text. Now grab one on a TABLET with a
       finger, aiming roughly at it rather than exactly: it is caught, because
       the invisible hit circle is still the old finger-sized one. Same at any
       zoom [auto: smoke_decor_text]
 ## The furniture library (docs/FURNITURE.md, dev, unreleased)
 ## Wall thickness (docs/WALL-THICKNESS.md, Unreleased)
 - [ ] **Walls + adjacent draw thickness**: the first Plan-editor tool is named
       “Walls” / «Стены» rather than “Add”; while it is active, its thickness
       field is the immediately following toolbar element, before Merge. The
       field still defaults to 15 cm and disappears when another tool is selected
       [auto: smoke_draw_wall_thickness]
 - [ ] **Tool + hover + input**: Plan editor → Wall thickness. Hover highlights
       the whole wall; click opens the cm/in field; empty/0 clears; Esc closes
       without applying; «Apply to all walls of this room» fills every allowed
       edge [auto: smoke_wall_thickness]
 - [ ] **Hatched body, area unchanged**: after setting thickness a `.wallbody`
       path appears; the room card's m² is identical before and after
       [auto: smoke_wall_thickness]
 - [ ] **Openings cut the slab**: a door/window on a thick wall leaves a gap in
       the body; the door swing is offset toward the inner face; with
       `hide_openings` the symbols hide but the cut remains
       [auto: smoke_wall_thickness]
 - [ ] **Door light uses the clear tunnel**: place an off-centre light beside a
       door in a thick wall. In the neighbouring room the glow is limited by
       sight lines through both the near and far inner-face corners; neither
       side crosses a solid jamb return. Clearing wall thickness restores the
       wider centreline-based sector [auto: test/logic.test.mjs; manual visual]
 - [ ] **Shared once / clear → line / resize re-keys**: one body for a shared
       wall; clearing thickness restores the centreline; resizing a thick wall
       keeps the thickness on the moved stretch, including both atomic solid
       remainders around a partial virtual span
       [auto: smoke_wall_thickness + smoke_resize_virtual_thick]
 - [ ] **Virtual T-junction**: when two real thick arms from different room
       contours meet at an `open_span` endpoint, the outside corner is a clean
       mitre with no stair-step. In every editor the saved dash and the two-click
       rubber band paint above the real hatch right up to the centreline; in
       View the same saved dash paints below the body, so each thick jamb masks
       its centreline end without shortening the stored span
       [auto: test/wall-thickness.test.mjs + smoke_resize_virtual_thick]
 - [ ] **Fragment normalisation**: draw adjacent/overlapping virtual stretches
       along the same pair of rooms — they persist and select as one span. Close
       the last virtual stretch on a uniformly thick wall — its saved `walls`
       data returns to one whole-edge key. Repeat across a Split boundary: spans
       owned by different room pairs must stay separate
       [auto: test/open-spans.test.mjs + test/wall-thickness.test.mjs +
       smoke_resize_virtual_thick]
 - [ ] **Unit + backend**: inset/mitre/bevel, key from either end, degrade,
       rekey, cm↔inches; `walls` schema bounds
       [auto: test/wall-thickness.test.mjs + tests_backend/test_validation.py]
 - [ ] **Thin-on-screen parity**: at the same card width a 1 cm wall suppresses
       the hatch (solid fill stays) in both `houseplan-card` and
       `houseplan-space-card`; a 20 cm wall restores the hatch in both
       [auto: smoke_wall_thickness + test/wall-thickness.test.mjs]
 - [ ] **Split through an open span**: split one side of a shared wall through
       the middle of an existing open stretch. Both resulting pieces remain in
       `open_spans`, and both new rooms link to the neighbour in `open_to`
       [auto: smoke_merge_split + test/open-spans.test.mjs]
 ## The furniture library (docs/FURNITURE.md, dev, unreleased)
 - [ ] **The tool and the palette**: Background editor → **Furniture**. A panel
       opens under the bar with the symbols grouped (furniture / appliances /
       plumbing / other), every tile drawing the real symbol, and the plan stays
       visible behind it [auto: smoke_furniture]
 - [ ] **Real size through `cell_cm`**: pick the sofa, click in the middle of a
       room, then measure it against the plan's own grid — it is 2.2 m wide and
 .9 m deep. Change the space's scale (Space settings → cm per cell) from
 to 10 and place a second sofa: it covers the same 2.2 m of the plan,
       i.e. half as many cells [auto: smoke_furniture + furniture.test]
 - [ ] **The size fields**: pick the bath, type 1.5 in Width, click — the piece
       is 1.5 m, not 1.7. In an imperial HA profile the same fields read and
       accept FEET, and the stored plan is unchanged when you switch back
       [auto: smoke_furniture (metric); manual for the imperial profile]
 - [ ] **The wall magnet**: click near a wall — the piece's BACK lands flat on
       it and it turns to the wall's direction (a bed's headboard against the
       wall, a toilet's cistern against it, a sofa's back against it). Hold
       **Shift** and click at the same place: it stays exactly under the cursor,
       straight [auto: smoke_furniture]
 - [ ] **The magnet while dragging**: drag a placed sofa across the room to
       another wall — it turns to that wall as it arrives. Drag it back into the
       middle: it keeps the angle it had rather than snapping straight. On a
       DIAGONAL wall it lands at the wall's own angle [auto: smoke_furniture for
       the axis-aligned case; manual for a diagonal wall]
 - [ ] **One stamp per pick**: after placing, the editor is back in **Select**
       with the new piece selected, and the palette is disarmed — clicking the
       plan again does not place a second one [auto: smoke_furniture]
 - [ ] **The frame is the text block's frame**: four corner beads and a rotate
       handle, the beads a quarter of their hit area. Grab one with a finger on
       a tablet, aiming roughly: it is caught [auto: smoke_furniture]
 - [ ] **Width and depth are independent**: drag a corner sideways — only the
       width changes; drag it down — only the depth. Two live badges show both
       in metres (or feet) while you drag, and they match a later measurement
       against the grid. Hold **Shift** for sizes off the grid
       [auto: smoke_furniture]
 - [ ] **Rotation**: the handle above the box turns the piece in 5° steps about
       its CENTRE (not a corner); Shift goes past the step; turning back to
       straight removes the angle entirely [auto: smoke_furniture]
 - [ ] **It is only decor**: a piece takes no tap in view mode, has no entity
       and no state, and does not appear in any room aggregation. Erase removes
       it; Delete removes the selected one [auto: smoke_furniture]
 - [ ] **Old plans and old servers**: a plan saved before this release opens
       unchanged. A plan WITH furniture saved by this card and opened by an
       older integration still saves (the backend accepts any well-formed symbol
       id) [auto: tests_backend test_decor_furniture; manual for the old server]
 - [ ] **card-mod**: `[data-symbol="toilet"] { stroke: #4fc3f7; }` colours only
       the toilets [auto: smoke_furniture checks the attributes; manual for the
       rule itself]
 ## Hiding layers: decor, openings, virtual walls (docs/UX-MODES.md, dev, unreleased)
 - [ ] **«Скрыть декоративный слой»** (owner 2026-08-05): a space with lines,
       labels or furniture on it → space settings → Display → tick the box, save.
       The plan loses all of it, in View, in the Plan editor and in the Device
       editor. Open **Редактор подложки** — everything is back, editable, exactly
       where it was. Untick it: the plan looks as it did before you started
       [auto: smoke_hide_layers]
 - [ ] **«Скрыть проёмы»**: tick it on a space with doors and windows. The
       symbols are gone from View and from the Device editor; the **Plan editor
       still draws them**, or the Opening tool would be editing blind. Nothing
       else changed: a lit room still spills light through the doorway, the sun
       still comes in at the window, a door with a contact sensor still reports
       open/closed in the room card, and the resize tool still refuses to
       shorten a wall past its opening [auto: smoke_hide_layers, smoke_glow]
 - [ ] **Virtual walls follow the borders switch** (owner 2026-08-05): make an
       open boundary between two rooms (Plan → «Открытая граница»), then turn
       **«Всегда отображать границы комнат» OFF**. The dashed stretch goes with
       the borders — no floating dashes on a plan that draws no walls. Turn the
       borders back on and it returns. In the Plan editor the dashes are always
       visible, whatever the switch says [auto: smoke_hide_layers, smoke_openwall]
 - [ ] **Nothing is stored when nothing is hidden**: with both boxes unticked,
       the space's config carries no `hide_decor` / `hide_openings` at all, and
       a plan saved by an older card still opens here unchanged
       [auto: smoke_hide_layers, tests_backend test_hide_layer_settings]

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