Enable automatic web search by default; improve toggle behavior and search planning.

test/webSearchRegression.test.js

@@ -5,6 +5,7 @@ import test from "node:test";
 import assert from "node:assert/strict";
 import {createServer} from "node:http";
 import {createApp} from "../src/app.js";
+import {decideWebSearch} from "../src/services/webSearchService.js";
 
 // Controlled protocol fixtures, not claims about real-world events or statistics.
 const lifespan = {title: "Life expectancy estimates 2026", url: "https://health.example/2026", content: "The 2026 life expectancy estimate in this test dataset is 74 years."};
@@ -44,6 +45,10 @@ test("explicit/date searches ground the actual Ollama stream before any generati
         eventLoopLagMonitorEnabled: false, structuredRequestLoggingEnabled: false, slowRequestLoggingEnabled: false
     }, modelOverrides: {fetch: async (_url, options) => {
         const body = JSON.parse(options.body);
+        if (body.format?.properties?.search) {
+            const {message} = JSON.parse(body.messages.at(-1).content);
+            return new Response(JSON.stringify({message: {content: JSON.stringify({search: decideWebSearch(message).shouldSearch, query: message})}, done: true}));
+        }
         modelRequests.push(body);
         if (expectedSearch) assert.equal(retrieved, true, "Search must finish before Ollama starts");
         const chunks = [