fix(est): apply selected estimate classification safely

resources/tester/helper_est_native.cjs

@@ -26,6 +26,7 @@ for (const file of [
   "native-exchange.js",
   "native-verify.js",
   "native-extra.js",
+  "native-business-actions.js",
   "native-forms.js",
 ]) {
   vm.runInContext(fs.readFileSync(path.join(base, file), "utf8"), context, { filename: file });

resources/tester/test_est_business.py

@@ -3,6 +3,45 @@
 from test_est_rea_parity import run
 
 
+def test_estimate_classification_refreshes_only_selected_source_and_preserves_manual_mode():
+    result = run(
+        "math",
+        """(()=>{
+      const p=EstNative.empty();p.options.SourceRefresh=false;p.options.AutoCalc=false;
+      p.tables.StuffcDat=[{Code:'M',Name:'material',Cost1:100,ValueIndex:0},{Code:'N',Name:'other',Cost1:800,ValueIndex:0}];
+      p.tables.EstMainDat=[{PkID:1,Code:'M',Name:'material',LinkIndex:5,GN:2,GU:100,GC:200,JC:0},
+        {PkID:2,Code:'N',Name:'other',LinkIndex:5,GN:1,GU:5,GC:5},{LinkIndex:54}];
+      const row=p.tables.EstMainDat[0],other=JSON.stringify(p.tables.EstMainDat[1]);
+      EstBusinessActions.setEstimateClassification(p,row,0,3);
+      const manual={JU:row.JU,GU:row.GU,GC:row.GC,JC:row.JC};
+      const auto=EstNative.calculate(p).tables.EstMainDat[0];
+      EstBusinessActions.setEstimateClassification(p,row,0,0);
+      const restored={GU:row.GU,JU:row.JU};
+      const missing={PkID:3,Code:'missing',LinkIndex:5,SCheck:0,GU:7};p.tables.EstMainDat.push(missing);
+      EstBusinessActions.setEstimateClassification(p,missing,3,3);
+      let rejected=0;try{EstBusinessActions.setEstimateClassification(p,missing,3,0)}catch{rejected++}
+      EstBusinessActions.setEstimateClassification(p,row,0,3);
+      p.tables.StuffcDat.push({...p.tables.StuffcDat[0]});try{EstBusinessActions.setEstimateClassification(p,row,0,0)}catch{rejected++}
+      const mismatch={PkID:4,Code:'N',LinkIndex:5,SCheck:0,GU:5};p.tables.EstMainDat.push(mismatch);
+      EstBusinessActions.setEstimateClassification(p,mismatch,4,3);
+      try{EstBusinessActions.setEstimateClassification(p,mismatch,4,0)}catch{rejected++}
+      p.tables.StuffcDat.push({Code:'L',Cost1:1000000000000,ValueIndex:0});
+      const large={PkID:5,Code:'L',LinkIndex:5,SCheck:0,GU:999999999900};p.tables.EstMainDat.push(large);
+      EstBusinessActions.setEstimateClassification(p,large,5,3);
+      try{EstBusinessActions.setEstimateClassification(p,large,5,0)}catch{rejected++}
+      return {manual,auto:{GC:auto.GC,JC:auto.JC},restored,rejected,missing,mismatch,large,other:JSON.stringify(p.tables.EstMainDat[1])===other,flag:p.options.SourceRefresh};
+    })()""",
+    )
+    assert result["manual"] == {"JU": 100, "GU": 0, "GC": 200, "JC": 0}
+    assert result["auto"] == {"GC": 0, "JC": 200}
+    assert result["restored"] == {"GU": 100, "JU": 0}
+    assert result["rejected"] == 4
+    assert result["missing"]["SCheck"] == 3 and result["missing"]["JU"] == 7
+    assert result["mismatch"]["SCheck"] == 3 and result["mismatch"]["JU"] == 5
+    assert result["large"]["SCheck"] == 3 and result["large"]["JU"] == 999999999900
+    assert result["other"] and not result["flag"]
+
+
 def test_annual_formulas_split_component_amounts_and_preserve_remainder():
     result = run(
         "math",