fix v1.15.4: device icon glyph centering — real ha-icon is block+line-height (glyph sat ~1.8px low); .dev ha-icon now zero-line-height flex. Revert v1.15.3 border-box (shrank badge); anchor centered via margin. Demo stub made faithful; smoke guards glyph-in-badge. Verified live.

demo/smoke_icon_center.mjs

@@ -11,9 +11,15 @@ const bad = await page.evaluate(() => {
     const ax = lr.left + (parseFloat(d.style.left) / 100) * lr.width;
     const ay = lr.top + (parseFloat(d.style.top) / 100) * lr.height;
     const r = d.getBoundingClientRect();
-    const offX = r.left + r.width / 2 - ax, offY = r.top + r.height / 2 - ay;
-    if (Math.abs(offX) > 0.6 || Math.abs(offY) > 0.6)
-      bad.push({ icon: d.querySelector('ha-icon')?.getAttribute('icon'), offX: +offX.toFixed(2), offY: +offY.toFixed(2) });
+    const cx = r.left + r.width / 2, cy = r.top + r.height / 2;
+    const offX = cx - ax, offY = cy - ay;
+    // glyph centred within the badge
+    const icon = d.querySelector('ha-icon');
+    const svg = icon?.shadowRoot?.querySelector('svg') || icon?.shadowRoot?.querySelector('ha-svg-icon')?.shadowRoot?.querySelector('svg');
+    let gX = 0, gY = 0;
+    if (svg) { const sr = svg.getBoundingClientRect(); gX = sr.left + sr.width / 2 - cx; gY = sr.top + sr.height / 2 - cy; }
+    if (Math.abs(offX) > 0.6 || Math.abs(offY) > 0.6 || Math.abs(gX) > 0.6 || Math.abs(gY) > 0.6)
+      bad.push({ icon: icon?.getAttribute('icon'), offX: +offX.toFixed(2), offY: +offY.toFixed(2), glyphX: +gX.toFixed(2), glyphY: +gY.toFixed(2) });
   }
   return bad;
 });

demo/srv/assets/houseplan-card.js

@@ -315,10 +315,10 @@ const t=globalThis,e=t.ShadowRoot&&(void 0===t.ShadyCSS||t.ShadyCSS.nativeShadow
     }
     .dev {
       position: absolute;
-      box-sizing: border-box; /* рамка 1px не должна смещать центр значка от точки привязки */
+      /* центр квадрата (включая рамку 1px) точно на точке привязки: -(size/2 + border) */
       width: var(--icon-size, 2.5cqw);
       height: var(--icon-size, 2.5cqw);
-      margin: calc(var(--icon-size, 2.5cqw) / -2) 0 0 calc(var(--icon-size, 2.5cqw) / -2);
+      margin: calc(var(--icon-size, 2.5cqw) / -2 - 1px) 0 0 calc(var(--icon-size, 2.5cqw) / -2 - 1px);
       border-radius: 22%;
       background: var(--hp-bg);
       border: 1px solid var(--hp-line);
@@ -334,6 +334,10 @@ const t=globalThis,e=t.ShadowRoot&&(void 0===t.ShadyCSS||t.ShadyCSS.nativeShadow
     }
     .dev ha-icon {
       --mdc-icon-size: calc(var(--icon-size, 2.5cqw) * 0.62);
+      display: flex;
+      align-items: center;
+      justify-content: center;
+      line-height: 0;
     }
     .dev:active {
       cursor: grabbing;
@@ -1311,4 +1315,4 @@ const t=globalThis,e=t.ShadowRoot&&(void 0===t.ShadyCSS||t.ShadyCSS.nativeShadow
           </button>
         </div>
       </div>
-    </div>`}}Yt.properties={hass:{attribute:!1},_config:{state:!0},_space:{state:!0},_layout:{state:!0},_devices:{state:!0},_tip:{state:!0},_selId:{state:!0},_toast:{state:!0},_serverCfg:{state:!0},_markup:{state:!0},_tool:{state:!0},_path:{state:!0},_cursorPt:{state:!0},_areaSel:{state:!0},_nameSel:{state:!0},_roomDialog:{state:!0},_spaceDialog:{state:!0},_infoCard:{state:!0},_rulesDialog:{state:!0},_importDialog:{state:!0},_markerDialog:{state:!0},_zoom:{state:!0},_view:{state:!0}},Yt.styles=Lt,customElements.get("houseplan-card")||customElements.define("houseplan-card",Yt),window.customCards=window.customCards||[],window.customCards.find(t=>"houseplan-card"===t.type)||window.customCards.push({type:"houseplan-card",name:"House Plan Card",description:"Interactive house plan: spaces, rooms and devices with live states and drag layout."}),console.info("%c HOUSEPLAN-CARD %c v1.15.2 ","background:#3ea6ff;color:#04121f;font-weight:700","");
+    </div>`}}Yt.properties={hass:{attribute:!1},_config:{state:!0},_space:{state:!0},_layout:{state:!0},_devices:{state:!0},_tip:{state:!0},_selId:{state:!0},_toast:{state:!0},_serverCfg:{state:!0},_markup:{state:!0},_tool:{state:!0},_path:{state:!0},_cursorPt:{state:!0},_areaSel:{state:!0},_nameSel:{state:!0},_roomDialog:{state:!0},_spaceDialog:{state:!0},_infoCard:{state:!0},_rulesDialog:{state:!0},_importDialog:{state:!0},_markerDialog:{state:!0},_zoom:{state:!0},_view:{state:!0}},Yt.styles=Lt,customElements.get("houseplan-card")||customElements.define("houseplan-card",Yt),window.customCards=window.customCards||[],window.customCards.find(t=>"houseplan-card"===t.type)||window.customCards.push({type:"houseplan-card",name:"House Plan Card",description:"Interactive house plan: spaces, rooms and devices with live states and drag layout."}),console.info("%c HOUSEPLAN-CARD %c v1.15.3 ","background:#3ea6ff;color:#04121f;font-weight:700","");

demo/srv/demo.html

@@ -27,9 +27,13 @@ class HaIcon extends HTMLElement{
   _r(){
     const p=(window.__ICONS||{})[this.getAttribute('icon')]||'';
     if(!this.shadowRoot) this.attachShadow({mode:'open'});
-    this.shadowRoot.innerHTML='<style>:host{display:inline-flex;align-items:center;justify-content:center;'+
-      'width:var(--mdc-icon-size,24px);height:var(--mdc-icon-size,24px);vertical-align:middle}'+
-      'svg{width:100%;height:100%;fill:currentColor;display:block}</style>'+
+    // Faithful to HA's ha-icon: host is display:block with a large inherited line-height,
+    // which pushes the (smaller) svg off-centre unless the consumer neutralises it.
+    this.shadowRoot.innerHTML='<style>:host{display:block;line-height:1.8;'+
+      'width:var(--mdc-icon-size,24px);height:var(--mdc-icon-size,24px);'+
+      'fill:currentColor;vertical-align:middle}'+
+      'svg{width:var(--mdc-icon-size,24px);height:var(--mdc-icon-size,24px);fill:currentColor;'+
+      'display:inline-block;vertical-align:baseline}</style>'+
       '<svg viewBox="0 0 24 24"><path d="'+p+'"></path></svg>';
   }
 }