respect classBreaks minValue and lastClassMaxValue in WHERE clauses

ArcGIS classBreaks renderers with no defaultSymbol don't render
features outside the minValue..lastClassMaxValue range. The split
layer WHERE clauses now bound the first group at minValue and cap
the last group at lastClassMaxValue to match this behavior.

For PlowPHL Treated Street Status (minValue=35):
- Before: symbol <= 360 / symbol > 360
- After:  symbol >= 35 AND symbol <= 360 / symbol > 360 AND symbol <= 25000

Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>

Author: ajrothwell

package.json

@@ -1,6 +1,6 @@
 {
   "name": "@phila/layerboard",
-  "version": "3.0.0-beta.25",
+  "version": "3.0.0-beta.26",
   "type": "module",
   "description": "Vue 3 + MapLibre mapping framework for City of Philadelphia applications",
   "main": "./dist/index.js",

src/utils/webmap-transformer.ts

@@ -680,11 +680,17 @@ function convertClassBreaksRenderer(renderer: EsriRenderer, layerOpacity?: numbe
         const lowerBound = g === 0 ? null : groups[g - 1]!.breaks[groups[g - 1]!.breaks.length - 1]!.classMaxValue;
         const upperBound = breaks[breaks.length - 1]!.classMaxValue;
         let whereClause: string;
+        const hasDefaultSymbol = !!renderer.defaultSymbol;
         if (lowerBound === null) {
-          whereClause = `${field} <= ${upperBound}`;
-        } else if (g === groups.length - 1) {
+          // First group: exclude features below minValue when no defaultSymbol
+          const minBound =
+            !hasDefaultSymbol && renderer.minValue != null ? `${field} >= ${renderer.minValue} AND ` : "";
+          whereClause = `${minBound}${field} <= ${upperBound}`;
+        } else if (g === groups.length - 1 && hasDefaultSymbol) {
+          // Last group with defaultSymbol: open-ended above
           whereClause = `${field} > ${lowerBound}`;
         } else {
+          // Middle groups, or last group without defaultSymbol: bounded range
           whereClause = `${field} > ${lowerBound} AND ${field} <= ${upperBound}`;
         }