feat(export): default-view option, Cyrillic PDF, per-wall projection pages

- Add 'Default View' scope to PNG export (fit-to-room for 2D, birds-eye for 3D)
- PDF now includes 3D top view, 2D default view, and every wall projection
- Embed DejaVu Sans TTF so Cyrillic room names render correctly in PDFs
- Preserve image aspect ratios and top-align on PDF pages
- Render each wall projection on its own PDF page at native aspect
- Mount a hidden per-wall projection renderer during export so all walls
  are captured even when the visible panel is in tab mode
- Keep 3D view mounted off-screen once requested so PDF can always snap
  to birds-eye without a visible view switch
- Outlet projection coordinate labels now show 3 decimal places

apps/client/public/locales/en/translation.json

@@ -256,8 +256,14 @@
   "properties.wallLightStyle.pendant-globe": "Pendant Globe",
   "properties.wallLightStyle.sconce-up": "Sconce Up",
   "properties.wallLightStyle.sconce-down": "Sconce Down",
+  "properties.wallLightStyle.wood-cube": "Wood Cube",
+  "properties.legs": "Legs",
+  "properties.legHeight": "Leg height",
   "properties.cordLength": "Cord length",
   "properties.lampSize": "Lamp size",
+  "properties.acUnitStyleLabel": "Style",
+  "properties.acUnitStyle.generic": "Generic",
+  "properties.acUnitStyle.lg": "LG",
   "properties.surfaceTexture": "Surface",
   "furnitureTexture.NONE": "None (solid color)",
   "furnitureTexture.WOOD_LIGHT": "Light Wood",
@@ -341,7 +347,12 @@
   "export.json": "JSON Data",
   "export.scope": "Scope",
   "export.currentView": "Current View",
+  "export.defaultView": "Default View",
   "export.allRoomViews": "All Room Views",
+  "export.pdfIncludesLabel": "PDF includes",
+  "export.pdfIncludes3DTop": "3D top view (default)",
+  "export.pdfIncludes2DDefault": "2D floor plan (default view)",
+  "export.pdfIncludesProjections": "All wall projections (default view)",
   "export.options": "Options",
   "export.includeGrid": "Include grid",
   "export.scaleFactor": "Scale factor:",