Merge upstream main into feature/measurement-tools

assets/icons/refset_add.svg

@@ -0,0 +1,4 @@
+<svg xmlns="http://www.w3.org/2000/svg" viewBox="0 0 24 24" width="24" height="24" fill="none" stroke-linecap="round">
+  <rect x="1.8" y="8.8" width="13" height="13" rx="2" stroke="#e0e0e0" stroke-width="1.6" stroke-dasharray="3 2"/>
+  <path d="M17.8 2.6v8M13.8 6.6h8" stroke="#4a9eff" stroke-width="2.4"/>
+</svg>

assets/icons/refset_remove.svg

@@ -0,0 +1,4 @@
+<svg xmlns="http://www.w3.org/2000/svg" viewBox="0 0 24 24" width="24" height="24" fill="none" stroke-linecap="round">
+  <rect x="1.8" y="6.8" width="13" height="13" rx="2" stroke="#e0e0e0" stroke-width="1.6" stroke-dasharray="3 2"/>
+  <path d="M13.8 4.6h8" stroke="#4a9eff" stroke-width="2.4"/>
+</svg>

assets/icons/ui/preview.svg

@@ -0,0 +1 @@
+<svg xmlns="http://www.w3.org/2000/svg" viewBox="0 0 24 24" fill="none" stroke="#B4B6B9" stroke-width="1.8" stroke-linejoin="round"><rect x="3.5" y="4.5" width="17" height="15" rx="1.5"/><path d="M6.5 16.5 L10.5 11.5 L13.5 14.5 L15.5 12.5 L18 16.5" stroke-width="1.4"/><circle cx="15.5" cy="8.5" r="1.3" stroke-width="1.4"/></svg>

assets/ocad.pgp

@@ -71,6 +71,10 @@ BE,       *BEDIT
 IAT,      *IMAGEATTACH
 XA,       *XATTACH
 XR,       *XREF
+-XR,      *-XREF
+XC,       *XCLIP
+ICL,      *IMAGECLIP
+IAD,      *IMAGEADJUST
 ADC,      *ADCENTER
 W,        *WBLOCK
 
@@ -155,6 +159,7 @@ SHA,      *SHADEMODE
 COL,      *COLOR
 DR,       *DRAWORDER
 DS,       *DSETTINGS
+DV,       *DVIEW
 LT,       *LINETYPE
 LTS,      *LTSCALE
 OS,       *OSNAP