feat(onboarding): add web search to onboarding flow (#34009)

* add web search to onboarding flow

* remove post onboarding step (now redundant)

* post-onboarding nudge if no web search set up

* address comments

* fix test mocking

* add enabled: false assertion to the no-key test

* --skip-search cli flag

* use provider that a user has a key for

* add assertions, replace the duplicated switch blocks

* test for quickstart fast-path with existing config key

* address comments

* cover quickstart falls through to key test

* bring back key source

* normalize secret inputs instead of direct string trimming

* preserve enabled: false if it's already set

* handle missing API keys in flow

* doc updates

* hasExistingKey to detect both plaintext strings and SecretRef objects

* preserve enabled state only on the "keep current" paths

* add test for preserving

* better gate flows

* guard against invalid provider values in config

* Update src/commands/configure.wizard.ts

Co-authored-by: greptile-apps[bot] <165735046+greptile-apps[bot]@users.noreply.github.com>

* format fix

* only mentions env var when it's actually available

* search apiKey fields now typed as SecretInput

* if no provider check if any search provider key is detectable

* handle both kimi keys

* remove .filter(Boolean)

* do not disable web_search after user enables it

* update resolveSearchProvider

* fix(onboarding): skip search key prompt in ref mode

* fix: add onboarding web search step (#34009) (thanks @kesku)

---------

Co-authored-by: greptile-apps[bot] <165735046+greptile-apps[bot]@users.noreply.github.com>
Co-authored-by: Shadow <hi@shadowing.dev>

src/agents/tools/web-search.ts

@@ -505,30 +505,7 @@ function resolveSearchProvider(search?: WebSearchConfig): (typeof SEARCH_PROVIDE
 
   // Auto-detect provider from available API keys (priority order)
   if (raw === "") {
-    // 1. Brave
-    if (resolveSearchApiKey(search)) {
-      logVerbose(
-        'web_search: no provider configured, auto-detected "brave" from available API keys',
-      );
-      return "brave";
-    }
-    // 2. Gemini
-    const geminiConfig = resolveGeminiConfig(search);
-    if (resolveGeminiApiKey(geminiConfig)) {
-      logVerbose(
-        'web_search: no provider configured, auto-detected "gemini" from available API keys',
-      );
-      return "gemini";
-    }
-    // 3. Kimi
-    const kimiConfig = resolveKimiConfig(search);
-    if (resolveKimiApiKey(kimiConfig)) {
-      logVerbose(
-        'web_search: no provider configured, auto-detected "kimi" from available API keys',
-      );
-      return "kimi";
-    }
-    // 4. Perplexity
+    // 1. Perplexity
     const perplexityConfig = resolvePerplexityConfig(search);
     const { apiKey: perplexityKey } = resolvePerplexityApiKey(perplexityConfig);
     if (perplexityKey) {
@@ -537,7 +514,22 @@ function resolveSearchProvider(search?: WebSearchConfig): (typeof SEARCH_PROVIDE
       );
       return "perplexity";
     }
-    // 5. Grok
+    // 2. Brave
+    if (resolveSearchApiKey(search)) {
+      logVerbose(
+        'web_search: no provider configured, auto-detected "brave" from available API keys',
+      );
+      return "brave";
+    }
+    // 3. Gemini
+    const geminiConfig = resolveGeminiConfig(search);
+    if (resolveGeminiApiKey(geminiConfig)) {
+      logVerbose(
+        'web_search: no provider configured, auto-detected "gemini" from available API keys',
+      );
+      return "gemini";
+    }
+    // 4. Grok
     const grokConfig = resolveGrokConfig(search);
     if (resolveGrokApiKey(grokConfig)) {
       logVerbose(
@@ -545,9 +537,17 @@ function resolveSearchProvider(search?: WebSearchConfig): (typeof SEARCH_PROVIDE
       );
       return "grok";
     }
+    // 5. Kimi
+    const kimiConfig = resolveKimiConfig(search);
+    if (resolveKimiApiKey(kimiConfig)) {
+      logVerbose(
+        'web_search: no provider configured, auto-detected "kimi" from available API keys',
+      );
+      return "kimi";
+    }
   }
 
-  return "brave";
+  return "perplexity";
 }
 
 function resolvePerplexityConfig(search?: WebSearchConfig): PerplexityConfig {