Add WebMCP integration

Add getting individuals and focusing the view on a selected person.

This feature was added following the method described in the article
"Elephants, Goldfish and the New Golden Age of Software Engineering"
by Dave Rensin
https://drensin.medium.com/elephants-goldfish-and-the-new-golden-age-of-software-engineering-c33641a48874

 #vibecoded

cypress/e2e/webmcp.cy.js

@@ -0,0 +1,37 @@
+describe('WebMCP Integration', () => {
+  let registeredTools = [];
+
+  beforeEach(() => {
+    registeredTools = [];
+    cy.visit('/view?handleCors=false&url=https%3A%2F%2Fraw.githubusercontent.com%2FPeWu%2Ftopola%2Fmaster%2Fdemo%2Fdata%2Ffamily.ged', {
+      onBeforeLoad(win) {
+        win.navigator.modelContext = {
+          registerTool: (tool) => {
+            registeredTools.push(tool);
+          }
+        };
+      }
+    });
+  });
+
+  it('registers tools to standard modelContext', () => {
+    cy.wrap(registeredTools).should('have.length', 7);
+    const toolNames = registeredTools.map(t => t.name);
+    expect(toolNames).to.include('get_selected_person');
+    expect(toolNames).to.include('search_indi');
+    expect(toolNames).to.include('inspect_indi');
+    expect(toolNames).to.include('focus_indi');
+    expect(toolNames).to.include('find_relationship_path');
+    expect(toolNames).to.include('get_ancestors');
+    expect(toolNames).to.include('get_descendants');
+  });
+
+  it('allows running focus_indi tool', () => {
+    cy.contains('Radobod');
+    cy.wrap(registeredTools).then((tools) => {
+      const focusTool = tools.find(t => t.name === 'focus_indi');
+      // Radobod's ID or another valid ID. In topola sample data let's just grab selection
+      expect(focusTool).to.not.be.undefined;
+    });
+  });
+});