feat(intent): honor major on to-one relations (off the list, still in the form)

components/engine/engine-intent/src/main/java/org/eclipse/dirigible/components/intent/generator/edm/EdmIntentGenerator.java

@@ -1108,7 +1108,7 @@ private static Map<String, Object> relationProperty(String ownerEntity, Relation
                 : relation.getSize()
                           .toString());
         p.put("widgetLength", "20");
-        p.put("widgetIsMajor", "true");
+        p.put("widgetIsMajor", relation.isMajor() ? "true" : "false");
         p.put("widgetDropDownKey", keyFieldName(target));
         p.put("widgetDropDownValue", labelFieldName(target));
         putLookupColumns(p, relation);
@@ -1157,7 +1157,7 @@ private static Map<String, Object> crossModelRelationProperty(String ownerEntity
                 : relation.getSize()
                           .toString());
         p.put("widgetLength", "20");
-        p.put("widgetIsMajor", "true");
+        p.put("widgetIsMajor", relation.isMajor() ? "true" : "false");
         p.put("widgetDropDownKey", info.keyField());
         p.put("widgetDropDownValue", info.labelField());
         putLookupColumns(p, relation);

components/engine/engine-intent/src/main/java/org/eclipse/dirigible/components/intent/model/RelationIntent.java

@@ -65,6 +65,13 @@ public class RelationIntent {
      * width). Use a small span (e.g. 4) to pack several short dropdowns onto one row.
      */
     private Integer size;
+    /**
+     * Whether this to-one relation shows as a column in the entity's list / document-items table
+     * ({@code widgetIsMajor}). Defaults to {@code true} (relations are list columns). Set
+     * {@code major: false} to keep the dropdown in the create/edit form and detail pane but off the
+     * list table - the relation counterpart of a field's {@code major: false}.
+     */
+    private boolean major = true;
     /**
      * Optional list of the target entity's field names to surface as extra <b>read-only</b> columns
      * wherever this to-one relation shows as a lookup column (the master-detail / document allocation
@@ -231,6 +238,14 @@ public void setSize(Integer size) {
         this.size = size;
     }
 
+    public boolean isMajor() {
+        return major;
+    }
+
+    public void setMajor(boolean major) {
+        this.major = major;
+    }
+
     public List<String> getShow() {
         return show;
     }

components/engine/engine-intent/src/test/java/org/eclipse/dirigible/components/intent/generator/edm/EdmIntentGeneratorTest.java

@@ -342,6 +342,36 @@ void dependsOnEmitsWidgetAttributesWithPrimaryKeyDefaults() {
         assertNull(countryFk.get("widgetDependsOnProperty"));
     }
 
+    @Test
+    void relationMajorFalseEmitsWidgetIsMajorFalseAndDefaultsTrue() {
+        String yaml = """
+                name: shop
+                uses:
+                  - { model: products }
+                entities:
+                  - name: Category
+                    fields:
+                      - { name: id, type: integer, primaryKey: true, generated: true }
+                      - { name: name, type: string }
+                  - name: OrderItem
+                    fields:
+                      - { name: id, type: integer, primaryKey: true, generated: true }
+                      - { name: name, type: string }
+                    relations:
+                      - { name: Category, kind: manyToOne, to: Category }                             # default -> list column
+                      - { name: Note, kind: manyToOne, to: Category, major: false }                   # local, off the list
+                      - { name: Product, kind: manyToOne, to: Product, model: products, major: false } # cross-model, off the list
+                """;
+        IntentModel parsed = IntentParser.parse(yaml);
+        Map<String, Object> model = EdmIntentGenerator.buildModelJsonForTest(parsed, "shop");
+        Map<String, Object> item = entityByName(entities(model), "OrderItem");
+
+        assertEquals("true", propertyByName(item, "Category").get("widgetIsMajor"), "a relation is a list column by default");
+        assertEquals("false", propertyByName(item, "Note").get("widgetIsMajor"), "major:false keeps a local relation off the list table");
+        assertEquals("false", propertyByName(item, "Product").get("widgetIsMajor"),
+                "major:false keeps a cross-model relation off the list table");
+    }
+
     @Test
     void documentMasterWithACalendarViewStillCarriesThePrintFlag() {
         // A document (header-items) master whose UI is overridden to a range calendar: the layout