feat(annotative): scale text/dims/tables/blocks at the annotation scale + editable property pickers

Render: annotative-ness is resolved centrally in scene::annotative::is_annotative
(per-object context dictionary, legacy XDATA, or annotative style) so the bake and
the properties panel agree. Text, dimensions, tables and blocks now display at the
current annotation scale in model space. An annotative block scales as one uniform
unit about its insertion point — its internal geometry and attributes are carried by
that scale instead of being scaled individually, fixing the block-attribute size
regression. Tables scale their column/row/margin geometry.

Properties: the handle- and flag-backed rows are now editable pickers — MLEADER
multileader style / text style / arrowhead / leader linetype, General Material, and
Plot style (named plot-style mode only; the color-dependent mode stays read-only,
which is correct). A picked name is resolved back to its handle in the update loop,
where the document is in scope. Annotative Yes/No and the annotation-scale row are
shown per object.

Co-Authored-By: Claude Opus 4.8 <noreply@anthropic.com>

src/entities/table.rs

@@ -367,6 +367,10 @@ pub fn tessellate_table(
     selected: bool,
     entity_color: [f32; 4],
     line_weight_px: f32,
+    // Annotation scale: multiplies the table's paper-size geometry so an
+    // annotative table renders at the current annotation scale. 1.0 for a
+    // non-annotative table (its geometry is already at model size).
+    anno_scale: f32,
 ) -> Vec<crate::scene::model::wire_model::WireModel> {
     use crate::scene::convert::tess_util::aci_to_rgba;
     use crate::scene::model::wire_model::WireModel;
@@ -431,7 +435,7 @@ pub fn tessellate_table(
         let mut off = 0.0f32;
         let mut v = vec![0.0f32];
         for col in &tab.columns {
-            off += col.width as f32;
+            off += col.width as f32 * anno_scale;
             v.push(off);
         }
         v
@@ -440,7 +444,7 @@ pub fn tessellate_table(
         let mut off = 0.0f32;
         let mut v = vec![0.0f32];
         for row in &tab.rows {
-            off += row.height as f32;
+            off += row.height as f32 * anno_scale;
             v.push(off);
         }
         v
@@ -450,8 +454,8 @@ pub fn tessellate_table(
     let header_suppressed = table_style.map(|t| t.header_suppressed).unwrap_or(false);
     let h_margin = table_style
         .map(|t| t.horizontal_margin as f32)
-        .unwrap_or(0.0);
-    let v_margin = table_style.map(|t| t.vertical_margin as f32).unwrap_or(0.0);
+        .unwrap_or(0.0) * anno_scale;
+    let v_margin = table_style.map(|t| t.vertical_margin as f32).unwrap_or(0.0) * anno_scale;
 
     let lookup_style = |hh: acadrust::Handle| -> Option<&acadrust::tables::TextStyle> {
         document.text_styles.iter().find(|s| s.handle == hh)
@@ -526,7 +530,7 @@ pub fn tessellate_table(
         let row_bot = row_offsets
             .get(ri + 1)
             .copied()
-            .unwrap_or(row_top + row.height as f32);
+            .unwrap_or(row_top + row.height as f32 * anno_scale);
         let row_mid = (row_top + row_bot) * 0.5;
         let row_style: Option<&acadrust::objects::RowCellStyle> = table_style.map(|ts| {
             let kind = match (title_suppressed, header_suppressed, ri) {
@@ -544,7 +548,7 @@ pub fn tessellate_table(
 
         for (ci, cell) in row.cells.iter().enumerate() {
             let col_left = col_offsets[ci];
-            let col_width = tab.columns.get(ci).map(|c| c.width as f32).unwrap_or(1.0);
+            let col_width = tab.columns.get(ci).map(|c| c.width as f32).unwrap_or(1.0) * anno_scale;
             let col_right = col_left + col_width;
             let tl = origin + h * col_left + v_flow * row_top;
             let tr = origin + h * col_right + v_flow * row_top;
@@ -648,7 +652,7 @@ pub fn tessellate_table(
                 })
                 .or_else(|| row_style.map(|s| s.text_height).filter(|h| *h > 1e-6))
                 .map(|h| h as f32)
-                .unwrap_or(0.18);
+                .unwrap_or(0.18) * anno_scale;
             let m_h = if h_margin > 1e-6 {
                 h_margin
             } else {