fix(text): integrate ignored fields across text-bearing entities

- MultiLeader: stop double-scaling when ctx.text_height (WCS-baked) is set;
  use it as-is and only multiply by scale_factor + anno on the fallback path.
  ctx.text_width gets the same treatment.
- Text / Attribute: width_factor and oblique_angle are entity-authoritative.
  The previous entity*style multiplication / addition mis-rendered any text
  whose TXSTYLE had a non-default width_factor or oblique_angle (RR 0.6,
  STYLE2 15°, Romans/ARIEL/A32 0.65-0.8 in the sample file).
- MText: honour TXSTYLE is_backward (negative width_factor mirror) and
  is_upside_down (180° rotation). measure_mtext_chars uses positive
  magnitude so anchor math stays correct under backward text.
- Tolerance: use tol.dimension_gap when set instead of the hard-coded
  0.35 * height heuristic.
- Table: cell text height / font / alignment resolve through
  CellContent -> CellStyle -> TableStyle.{title|header|data}_row_style
  -> compiled-in defaults. Row classification respects the suppressed
  flags. Cell + content rotation applied.

Co-Authored-By: Claude Opus 4.7 <noreply@anthropic.com>

src/entities/tolerance.rs

@@ -130,7 +130,13 @@ fn tessellate_tolerance(tol: &Tolerance) -> Vec<Vec<[f32; 2]>> {
     } else {
         2.5_f32
     };
-    let gap = (h * 0.35).max(0.1);
+    // DIMGAP — stored on the entity (resolved from the dim style at creation).
+    // Fall back to AutoCAD's 0.35 × height convention only when missing.
+    let gap = if tol.dimension_gap > 1e-6 {
+        tol.dimension_gap as f32
+    } else {
+        (h * 0.35).max(0.1)
+    };
     let cell_h = h + 2.0 * gap;
     let char_w = h * 0.65;
     let min_cell_w = h * 1.4;