diff --git a/demo/smoke_audit_1490.mjs b/demo/smoke_audit_1490.mjs
index 62f3cdab..5a0c92e9 100644
--- a/demo/smoke_audit_1490.mjs
+++ b/demo/smoke_audit_1490.mjs
@@ -21,14 +21,27 @@ Object.assign(out, await page.evaluate(async () => {
   c._setMode('plan'); await c.updateComplete;
   await new Promise((r) => requestAnimationFrame(r));
   const inPlan = c._baseVb();
-  o.editorSeesWholeCanvas = inPlan[2] === 1000 && inPlan[3] === 1000;
+  // docs/CANVAS.md: холста-квадрата больше нет, поэтому «редактор видит весь
+  // холст» переписано в исходное НАМЕРЕНИЕ HP-1490-03 — «в редакторе есть куда
+  // рисовать наружу». Рамка теперь по содержимому и в редакторе тоже, а место
+  // даёт запас панорамирования (§5) и зум-аут до 3x.
+  o.editorFrameIsContent = inPlan[2] < 999 && inPlan[2] > 0;
+  o.editorCanPanPastContent = (() => {
+    const fit = c._viewOr(c._baseVb());
+    const moved = c._clampView({ x: fit.x + fit.w * 0.9, y: fit.y, w: fit.w, h: fit.h }, fit);
+    return moved.x > fit.x + fit.w * 0.5; // ушли почти на экран вправо, зажима нет
+  })();
+  o.editorZoomOutGivesRoom = (() => {
+    c._resetZoom(); c._applyView(1 / 3);
+    const wide = c._view.w; c._resetZoom();
+    return wide > inPlan[2] * 2.5; // видно втрое больше, чем нарисовано
+  })();
   const v = c._viewOr(c._baseVb());
-  o.editorViewCoversCanvas = v.w >= 999; // старый cropped view не пережил смену
   // в редакторе можно ткнуть в дальний угол холста
   o.canReachFarCorner = (() => {
     const stage = (c.shadowRoot || c.renderRoot).querySelector('.stage');
     const pt = c._screenToVb(stage.clientWidth - 1, stage.clientHeight - 1);
-    return pt[0] > 900 || pt[1] > 900;
+    return pt[0] > inPlan[0] + inPlan[2] * 0.9 || pt[1] > inPlan[1] + inPlan[3] * 0.9;
   })();
   c._setMode('view'); await c.updateComplete;
   await new Promise((r) => requestAnimationFrame(r));
diff --git a/demo/smoke_hidden_flag.mjs b/demo/smoke_hidden_flag.mjs
index faa7957a..94193820 100644
--- a/demo/smoke_hidden_flag.mjs
+++ b/demo/smoke_hidden_flag.mjs
@@ -175,8 +175,14 @@ Object.assign(out, await page.evaluate(async () => {
   await card.updateComplete;
   const st = [...card.renderRoot.querySelectorAll('[style*="left"]')]
     .find((el) => /%$/.test(el.style.left || '') && el.style.top);
-  // статичная карточка рендерит от полного квадрата 0..1000
-  const stVb = st && [parseFloat(st.style.left) * 10, parseFloat(st.style.top) * 10];
+  // docs/CANVAS.md §4: статичная карточка теперь кадрирует СОДЕРЖИМОЕ, как и
+  // полная, а не квадрат 0..1000 — координаты берём из её же viewBox
+  const svb = (card.renderRoot.querySelector('svg')?.getAttribute('viewBox') || '0 0 1000 1000')
+    .trim().split(/\s+/).map(Number);
+  const stVb = st && [
+    svb[0] + (parseFloat(st.style.left) / 100) * svb[2],
+    svb[1] + (parseFloat(st.style.top) / 100) * svb[3],
+  ];
   o.autoGridParity = !!fullVb && !!stVb
     && Math.abs(fullVb[0] - stVb[0]) < 6 && Math.abs(fullVb[1] - stVb[1]) < 6;
   if (!o.autoGridParity) console.log('full', fullVb, 'static', stVb);
diff --git a/demo/smoke_infinite_canvas.mjs b/demo/smoke_infinite_canvas.mjs
new file mode 100644
index 00000000..f0827b3f
--- /dev/null
+++ b/demo/smoke_infinite_canvas.mjs
@@ -0,0 +1,288 @@
+// Infinite canvas (docs/CANVAS.md): a plan drawn far past the old unit square
+// renders whole, devices can be placed and saved out there, the opening view
+// follows the content, one far stray neither breaks the view nor hides itself,
+// zoom-out stops at 3x the content and icons keep their pixel size.
+import { writeFileSync, mkdirSync } from 'node:fs';
+import { execFileSync } from 'node:child_process';
+import { launch, check, checkAll, finish } from './serve.mjs';
+
+const SHOTS = process.env.HP_SHOTS || '';
+const { page, browser } = await launch({ width: 900, height: 820 }, 1);
+const out = {};
+const raf = () => page.evaluate(() => new Promise((r) => requestAnimationFrame(() => requestAnimationFrame(r))));
+
+// A hand-drawn plan whose rooms live at 1.5..3.0 — entirely outside the old
+// canvas. Before the infinite canvas the -25%..125% envelope threw every one
+// of these vertices away and the card framed empty space.
+const FAR_CFG = {
+  spaces: [{
+    id: 'f1', title: 'Ground floor', view_box: [0, 0, 1, 1], plan_url: null, plan_aspect: null,
+    rooms: [
+      { id: 'r1', name: 'Living room', area: 'living_room',
+        poly: [[1.5, 1.5], [2.2, 1.5], [2.2, 2.2], [1.5, 2.2]] },
+      { id: 'r2', name: 'Kitchen', area: 'kitchen',
+        poly: [[2.2, 1.5], [3.0, 1.5], [3.0, 2.0], [2.2, 2.0]] },
+      { id: 'r3', name: 'Bedroom', area: 'bedroom',
+        poly: [[2.2, 2.0], [3.0, 2.0], [3.0, 2.6], [2.2, 2.6]] },
+      { id: 'r4', name: 'Hallway', area: 'hallway',
+        poly: [[1.5, 2.2], [2.2, 2.2], [2.2, 2.6], [1.5, 2.6]] },
+    ],
+    openings: [{ id: 'o1', type: 'window', x: 1.8, y: 1.5, angle: 0, length: 0.15 }],
+    decor: [{ id: 'd1', kind: 'line', x1: 1.4, y1: 2.7, x2: 3.1, y2: 2.7, color: '#8899aa' }],
+  }, {
+    id: 'garden', title: 'Garden', view_box: [0, 0, 1, 1],
+    rooms: [{ id: 'g1', name: 'Garden', area: 'garden',
+      poly: [[0.03, 0.178], [0.97, 0.178], [0.97, 0.822], [0.03, 0.822]] }],
+  }],
+  markers: [], settings: {},
+};
+const FAR_LAYOUT = {
+  d_light1: { s: 'f1', x: 1.7, y: 1.7 }, d_lamp: { s: 'f1', x: 2.0, y: 1.9 },
+  d_tv: { s: 'f1', x: 1.6, y: 2.1 }, d_temp: { s: 'f1', x: 1.9, y: 1.6 },
+  d_kettle: { s: 'f1', x: 2.5, y: 1.7 }, d_leak: { s: 'f1', x: 2.9, y: 1.8 },
+  d_bedlight: { s: 'f1', x: 2.6, y: 2.3 }, d_window: { s: 'f1', x: 2.9, y: 2.5 },
+  d_lock: { s: 'f1', x: 1.6, y: 2.5 }, d_motion: { s: 'f1', x: 2.0, y: 2.4 },
+};
+
+const loadFar = (cfg, layout) => page.evaluate(async ([c2, l2]) => {
+  const c = window.__card;
+  c._serverCfg = JSON.parse(JSON.stringify(c2));
+  c._layout = JSON.parse(JSON.stringify(l2));
+  c._modelCache = null;
+  c._frame = null;
+  c._showFar = false;
+  c._space = 'f1';
+  c._maybeRebuildDevices?.();
+  c._defPos = c._defaultPositions();
+  c._view = null;
+  c._zoom = 1;
+  c.requestUpdate();
+  await c.updateComplete;
+  c._resetZoom();
+  await c.updateComplete;
+}, [cfg, layout]);
+
+await loadFar(FAR_CFG, FAR_LAYOUT);
+await raf();
+
+// ---- (b) the plan past the old square renders WHOLE ----------------------
+Object.assign(out, await page.evaluate(() => {
+  const c = window.__card;
+  const o = {};
+  const b = c._baseVb();
+  // the content is 1500..3000 x 1500..2700 render units, plus decor/openings
+  o.frameHoldsFarPlan = b[0] < 1450 && b[0] + b[2] > 3050 && b[1] < 1450 && b[1] + b[3] > 2750;
+  o.frameIsNotTheOldSquare = b[0] > 1000; // nothing is framed at the origin any more
+  const v = c._viewOr(b);
+  o.viewShowsFarPlan = v.x <= 1500 && v.x + v.w >= 3000;
+  // every room polygon is inside the painted viewBox
+  const sr = c.shadowRoot || c.renderRoot;
+  const polys = [...sr.querySelectorAll('polygon.room')];
+  o.allRoomsDrawn = polys.length === 4;
+  const st = sr.querySelector('.stage').getBoundingClientRect();
+  o.roomsOnScreen = polys.every((p) => {
+    const r = p.getBoundingClientRect();
+    return r.width > 4 && r.height > 4 && r.left >= st.left - 2 && r.right <= st.right + 2
+      && r.top >= st.top - 2 && r.bottom <= st.bottom + 2;
+  });
+  // and the markers landed on the plan, not in a corner of a phantom canvas
+  const devs = [...sr.querySelectorAll('.devlayer .dev')];
+  o.markersOnPlan = devs.length >= 10 && devs.every((d) => {
+    const r = d.getBoundingClientRect();
+    return r.left >= st.left - 2 && r.right <= st.right + 2 && r.top >= st.top - 2 && r.bottom <= st.bottom + 2;
+  });
+  return o;
+}));
+
+// ---- a device can be PLACED past the old square, and it saves -------------
+const ws = await page.evaluate(async () => {
+  const c = window.__card;
+  const sent = [];
+  const base = c.hass.callWS;
+  c.hass = { ...c.hass, callWS: async (m) => { sent.push(m); return base(m); } };
+  // drop a virtual marker at 3.4 / 2.9 — a long way outside the old canvas
+  const far = { s: 'f1', x: 3.4, y: 2.9 };
+  c._layout = { ...c._layout, d_gate: far };
+  c._dirtyPos.add('d_gate');
+  await c._persistLayout?.();
+  // and a room extended even further out, saved through the config writer
+  const cfg = JSON.parse(JSON.stringify(c._serverCfg));
+  cfg.spaces[0].rooms.push({ id: 'r5', name: 'Workshop',
+    poly: [[3.1, 2.0], [3.8, 2.0], [3.8, 2.6], [3.1, 2.6]] });
+  c._serverCfg = cfg; c._modelCache = null; c._frame = null;
+  await c._saveConfig?.();
+  await new Promise((r) => setTimeout(r, 700));
+  return { sent: JSON.parse(JSON.stringify(sent)), layout: JSON.parse(JSON.stringify(c._layout)) };
+});
+out.farDeviceSaved = ws.layout.d_gate.x === 3.4 && ws.layout.d_gate.y === 2.9;
+const cfgMsg = ws.sent.filter((m) => m.type === 'houseplan/config/set').pop();
+const layMsg = ws.sent.filter((m) => m.type === 'houseplan/layout/update').pop();
+out.wsCarriedFarGeometry = !!cfgMsg
+  && JSON.stringify(cfgMsg.config).includes('3.8');
+out.wsCarriedFarPosition = !!layMsg && JSON.stringify(layMsg).includes('3.4');
+
+// the payload the card sends must pass the REAL backend schema (docs/CANVAS.md
+// §3: ±5000). Skipped, not failed, where voluptuous is not installed.
+out.backendAcceptsFarPayload = (() => {
+  if (!cfgMsg) return false;
+  const f = '/tmp/hp_infinite_payload.json';
+  writeFileSync(f, JSON.stringify({ config: cfgMsg.config, layout: (layMsg || {}).layout || ws.layout }));
+  try {
+    execFileSync('python3', ['-c', 'import voluptuous'], { stdio: 'ignore' });
+  } catch { console.log('(voluptuous absent — backend schema check skipped)'); return true; }
+  const code = [
+    'import json,sys',
+    'sys.path.insert(0, "custom_components/houseplan")',
+    'import validation as v',
+    `d=json.load(open(${JSON.stringify(f)}))`,
+    'v.CONFIG_SCHEMA(d["config"]); v.LAYOUT_SCHEMA(d["layout"])',
+    'print("VALID")',
+  ].join('\n');
+  try {
+    return execFileSync('python3', ['-c', code], { encoding: 'utf8' }).includes('VALID');
+  } catch (e) { console.log('backend refused the payload:', String(e.stdout || e.message).slice(-400)); return false; }
+})();
+
+// ---- an OUTLIER: the view ignores it, the hint offers it ------------------
+await loadFar({
+  ...FAR_CFG,
+  spaces: FAR_CFG.spaces.map((s) => (s.id === 'f1' ? { ...s } : s)),
+}, { ...FAR_LAYOUT, d_motion: { s: 'f1', x: 90, y: 90 } });
+await raf();
+Object.assign(out, await page.evaluate(() => {
+  const c = window.__card;
+  const o = {};
+  o.outlierReported = c._outliers === 1;
+  const b = c._baseVb();
+  o.outlierDoesNotCommandView = b[2] < 4000 && b[0] + b[2] < 5000; // still the house, not 90 canvases
+  o.outlierViewStillHoldsPlan = b[0] < 1500 && b[0] + b[2] > 3000;
+  const sr = c.shadowRoot || c.renderRoot;
+  const hint = sr.querySelector('.farhint');
+  o.hintShown = !!hint && !!hint.querySelector('button');
+  o.hintIsNotAModal = !sr.querySelector('.dialogwrap');
+  return o;
+}));
+
+// «Показать» / «Вписать всё» takes the stray in
+Object.assign(out, await page.evaluate(async () => {
+  const c = window.__card;
+  const sr = c.shadowRoot || c.renderRoot;
+  sr.querySelector('.farhint button').click();
+  await c.updateComplete;
+  const o = {};
+  const v = c._viewOr(c._baseVb());
+  o.fitAllReachesTheStray = v.x + v.w > 90000 && v.y + v.h > 90000;
+  o.fitAllStillHoldsPlan = v.x <= 1500 && v.y <= 1500;
+  await c.updateComplete;
+  o.hintGoneAfterShow = !sr.querySelector('.farhint');
+  return o;
+}));
+
+// ---- zoom-out stops at 3x, zoom-in unchanged -----------------------------
+await loadFar(FAR_CFG, FAR_LAYOUT);
+await raf();
+Object.assign(out, await page.evaluate(() => {
+  const c = window.__card;
+  const o = {};
+  c._resetZoom();
+  const fit = { ...c._viewOr(c._baseVb()) };
+  c._applyView(0.001);
+  o.zoomOutStopsAtThree = Math.abs(c._zoom - 1 / 3) < 1e-9
+    && Math.abs(c._view.w - fit.w * 3) < fit.w * 0.02;
+  c._applyView(50);
+  o.zoomInUnchanged = c._zoom === 8;
+  c._resetZoom();
+  return o;
+}));
+
+// ---- icons keep their PIXEL size across zooms (docs/CANVAS.md §6) --------
+out.iconSizeIsViewportRelative = await page.evaluate(async () => {
+  const c = window.__card;
+  const sr = c.shadowRoot || c.renderRoot;
+  const size = () => {
+    const el = sr.querySelector('.devlayer .dev');
+    const r = el.getBoundingClientRect();
+    return Math.round(r.width * 10) / 10;
+  };
+  c._resetZoom(); await c.updateComplete;
+  const at1 = size();
+  c._applyView(4); await c.updateComplete;
+  const at4 = size();
+  c._applyView(1 / 3); await c.updateComplete;
+  const atOut = size();
+  c._resetZoom(); await c.updateComplete;
+  return at1 > 4 && Math.abs(at4 - at1) <= 1 && Math.abs(atOut - at1) <= 1;
+});
+
+// ---- an OLD plan (small, with a view_box) opens exactly as before ---------
+Object.assign(out, await page.evaluate(async () => {
+  const c = window.__card;
+  const o = {};
+  const cfg = {
+    spaces: [{ id: 'f1', title: 'Old', view_box: [0, 0, 1, 1], plan_url: null, plan_aspect: null,
+      rooms: [{ id: 'r1', name: 'Living', area: 'living_room',
+        poly: [[0.04, 0.14], [0.55, 0.14], [0.55, 0.58], [0.04, 0.58]] },
+      { id: 'r2', name: 'Kitchen', area: 'kitchen',
+        poly: [[0.55, 0.14], [0.96, 0.14], [0.96, 0.46], [0.55, 0.46]] }] }],
+    markers: [], settings: {},
+  };
+  c._serverCfg = cfg; c._layout = { d_light1: { s: 'f1', x: 0.22, y: 0.22 } };
+  c._modelCache = null; c._frame = null; c._showFar = false; c._view = null;
+  c._maybeRebuildDevices?.();
+  c._defPos = c._defaultPositions(); // the auto grid follows the new rooms
+  c.requestUpdate(); await c.updateComplete;
+  c._resetZoom(); await c.updateComplete;
+  const b = c._baseVb();
+  // identical to what contentBounds produced before: the content bbox
+  // (40..960 x 140..580) plus 5% of the longer side (920 -> 46)
+  o.legacyFrameUnchanged = Math.abs(b[0] - -6) < 1 && Math.abs(b[1] - 94) < 1
+    && Math.abs(b[2] - 1012) < 1 && Math.abs(b[3] - 532) < 1;
+  o.legacyNoHint = c._outliers === 0;
+  // an EMPTY space falls back to the stored view_box hint (§4)
+  c._serverCfg = { spaces: [{ id: 'f1', title: 'E', view_box: [0.1, 0.2, 0.5, 0.4], rooms: [] }],
+    markers: [], settings: {} };
+  // a space with NOTHING in it at all — not even a marker parked in it
+  c._layout = {}; c._modelCache = null; c._frame = null;
+  c._devices = [];
+  c.requestUpdate(); await c.updateComplete;
+  const e = c._baseVb();
+  o.emptySpaceUsesViewBoxHint = JSON.stringify(e.map(Math.round)) === '[100,200,500,400]';
+  return o;
+}));
+
+// ---- screenshots ---------------------------------------------------------
+if (SHOTS) {
+  mkdirSync(SHOTS, { recursive: true });
+  await loadFar(FAR_CFG, FAR_LAYOUT);
+  await raf();
+  await page.screenshot({ path: `${SHOTS}/canvas_far_plan.png` });
+  // fit-all with a stray far away
+  await loadFar(FAR_CFG, { ...FAR_LAYOUT, d_motion: { s: 'f1', x: 90, y: 90 } });
+  await raf();
+  await page.screenshot({ path: `${SHOTS}/canvas_far_hint.png` });
+  await page.evaluate(async () => {
+    const c = window.__card;
+    (c.shadowRoot || c.renderRoot).querySelector('.farhint button').click();
+    await c.updateComplete;
+  });
+  await raf();
+  await page.screenshot({ path: `${SHOTS}/canvas_fit_all.png` });
+  // adaptive grid, zoomed far out in the plan editor
+  await loadFar(FAR_CFG, FAR_LAYOUT);
+  await page.evaluate(async () => {
+    const c = window.__card;
+    c._setMode('plan'); await c.updateComplete;
+    c._resetZoom(); c._applyView(1 / 3); await c.updateComplete;
+  });
+  await raf();
+  await page.screenshot({ path: `${SHOTS}/canvas_grid_far.png` });
+  await page.evaluate(async () => {
+    const c = window.__card;
+    c._resetZoom(); c._applyView(4); await c.updateComplete;
+  });
+  await raf();
+  await page.screenshot({ path: `${SHOTS}/canvas_grid_near.png` });
+  await page.evaluate(async () => { window.__card._setMode('view'); });
+}
+
+await finish(browser, checkAll(out));
diff --git a/demo/smoke_zoom_out.mjs b/demo/smoke_zoom_out.mjs
index d1f8484c..4dc38477 100644
--- a/demo/smoke_zoom_out.mjs
+++ b/demo/smoke_zoom_out.mjs
@@ -44,8 +44,11 @@ out.zoomOut = await page.evaluate(() => {
 out.zoomOutWorks = out.zoomOut.zoom === 0.5 && out.zoomOut.wider
   && out.zoomOut.centredX && out.zoomOut.centredY;
 delete out.zoomOut;
-out.floorIsHalf = await page.evaluate(() => { window.__card._resetZoom(); const c = window.__card;
-  c._applyView(0.1); return c._zoom; }) === 0.4; // clamped at the floor
+// docs/CANVAS.md §5: the zoom-out floor moved from a fixed 0.4 of the old
+// view_box to 1/3 of the CONTENT frame — three canvases of empty plane is as
+// far as it is useful to go when the canvas has no edges.
+out.floorIsThird = Math.abs(await page.evaluate(() => { window.__card._resetZoom(); const c = window.__card;
+  c._applyView(0.01); return c._zoom; }) - 1 / 3) < 1e-9; // clamped at the floor
 await page.evaluate(() => window.__card._resetZoom());
 
 // -- editor zoom is a working tool, not the viewing intent ----------------
diff --git a/docs/TESTING.md b/docs/TESTING.md
index 648cdc99..c0bd6674 100644
--- a/docs/TESTING.md
+++ b/docs/TESTING.md
@@ -960,3 +960,48 @@ require hands on real hardware — they remain for the human pass.
       (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)
+- [ ] **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
+- [ ] **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