feat: default search to Kagi across omnibox, new tab, and mobile (#69)

Kagi (https://kagi.com/search?q=) becomes the default search engine
everywhere TronBrowser picks one:

- Omnibox: the launcher's once-per-profile default_search_provider_data
  now seeds Kagi. The sentinel filename carries the engine name
  (.tron-search-kagi), so profiles created under the old NeoSearch
  default get the new default applied once, and a user's own
  chrome://settings/search choice is still respected afterwards.
- New tab (ai-sidebar): Kagi is added to SEARCH_ENGINES, is the initial
  value of searchEngine, and is the fallback for an unknown stored id.
- Settings (extension options + web): Kagi is the first option and is
  labelled the default; the stored-value fallback now resolves to kagi.
- Mobile: the in-app browser's address-bar search falls back to Kagi.

NeoSearch, Xprivo, DuckDuckGo, Altpower, and Oxiverse remain available
as alternatives, and the Tor engine list is untouched.

Co-authored-by: Claude Opus 5 (1M context) <noreply@anthropic.com>

Author: ralyodio

README.md

@@ -47,8 +47,9 @@ Linux phones (Librem 5 / PinePhone / Ubuntu Touch). See
 
 ## What you get today
 
-- **De-googled new tab** — TronBrowser page, **NeoSearch** as the default private
-  search (no Google in the omnibox; DuckDuckGo available as an alternative), quick links.
+- **De-googled new tab** — TronBrowser page, **Kagi** as the default search
+  (no Google in the omnibox; NeoSearch, Xprivo, and DuckDuckGo available as
+  alternatives), quick links.
 - **RSS reader** on the new tab — seeded from your OPML; add/remove feeds and
   **import/export OPML** in Settings.
 - **AI sidebar (bring your own keys)** — Anthropic, OpenAI, Google/Gemini,

apps/desktop/extensions/ai-sidebar/newtab.html

@@ -21,10 +21,11 @@
         <button type="button" id="mode-web" class="mode active" aria-selected="true">Web</button>
         <button type="button" id="mode-ai" class="mode" aria-selected="false">AI</button>
       </div>
-      <input id="q" type="text" placeholder="Search NeoSearch…" autocomplete="off" autofocus />
+      <input id="q" type="text" placeholder="Search Kagi…" autocomplete="off" autofocus />
     </form>
 
     <nav class="links">
+      <a href="https://kagi.com">Kagi</a>
       <a href="https://neosearch.org">NeoSearch</a>
       <a href="https://www.xprivo.com">Xprivo</a>
       <a href="https://duckduckgo.com">DuckDuckGo</a>

apps/desktop/extensions/ai-sidebar/newtab.js

@@ -11,8 +11,9 @@ const DEFAULT_TICKERS = 'SPY, AAPL, NVDA, BTC-USD';
 const DEFAULT_LEAGUES = 'nfl, nba';
 const splitList = (s) => String(s || '').split(',').map((x) => x.trim()).filter(Boolean);
 
-// --- Search: Web (NeoSearch by default) or AI (sidebar) ---
+// --- Search: Web (Kagi by default) or AI (sidebar) ---
 const SEARCH_ENGINES = {
+  kagi: { name: 'Kagi', url: 'https://kagi.com/search?q=' },
   neosearch: { name: 'NeoSearch', url: 'https://neosearch.org/?q=' },
   xprivo: { name: 'Xprivo', url: 'https://www.xprivo.com/search/?q=' },
   ddg: { name: 'DuckDuckGo', url: 'https://duckduckgo.com/?q=' },
@@ -36,15 +37,15 @@ const TOR_SEARCH_ENGINES = {
   excavator: { name: 'Excavator', url: 'http://2fd6cemt4gmccflhm6imvdfvli3nf7zn6rfrwpsy7uhxrgbypvwf5fad.onion/?q=' },
 };
 let searchMode = 'web';
-let searchEngine = 'neosearch';
+let searchEngine = 'kagi';
 let torSearchEngine = 'ahmia';
 let torEnabled = false;
 
 // Resolve the engine to use right now: the Tor default while the onion toggle
 // is on, otherwise the clearnet default.
 function activeEngine() {
   if (torEnabled) return TOR_SEARCH_ENGINES[torSearchEngine] || TOR_SEARCH_ENGINES.ahmia;
-  return SEARCH_ENGINES[searchEngine] || SEARCH_ENGINES.neosearch;
+  return SEARCH_ENGINES[searchEngine] || SEARCH_ENGINES.kagi;
 }
 
 function setMode(mode) {

apps/desktop/extensions/ai-sidebar/options.html

@@ -130,12 +130,13 @@ <h2>bittorrented.com — Live TV, Radio &amp; Podcasts</h2>
   <span id="btrMsg" class="saved"></span>
 
   <h2>Search</h2>
-  <p class="hint">Default search engine for the new-tab search box. NeoSearch is the
-  private default; Xprivo, DuckDuckGo, and others are available as alternatives. (The omnibox default
+  <p class="hint">Default search engine for the new-tab search box. Kagi is the
+  default; NeoSearch, Xprivo, DuckDuckGo, and others are available as alternatives. (The omnibox default
   is set separately in <code>chrome://settings/search</code>.)</p>
   <label for="searchEngine">New-tab search engine (clearnet)</label>
   <select id="searchEngine">
-    <option value="neosearch">NeoSearch (private, default)</option>
+    <option value="kagi">Kagi (default)</option>
+    <option value="neosearch">NeoSearch (private)</option>
     <option value="xprivo">Xprivo (private)</option>
     <option value="ddg">DuckDuckGo</option>
     <option value="altpower">Altpower</option>

apps/desktop/extensions/ai-sidebar/settings-sections.js

@@ -42,7 +42,7 @@ export async function mountSettingsSections({ store, el, flash }) {
   const cur = await store.get(['feeds', 'tickers', 'leagues', 'searchEngine', 'torSearchEngine']);
 
   // Populate current values (on every mount, e.g. after a cloud pull).
-  if (el('searchEngine')) el('searchEngine').value = cur.searchEngine || 'neosearch';
+  if (el('searchEngine')) el('searchEngine').value = cur.searchEngine || 'kagi';
   if (el('torSearchEngine')) el('torSearchEngine').value = cur.torSearchEngine || 'ahmia';
   if (el('tickers')) el('tickers').value = cur.tickers ?? '';
   if (el('leagues')) el('leagues').value = cur.leagues ?? '';

apps/desktop/launcher/tronbrowser

@@ -186,9 +186,10 @@ if flag not in exp:
 PY
 fi
 
-# Default the omnibox to NeoSearch once per profile, then respect the user's
-# chrome://settings/search choice.
-if command -v python3 >/dev/null 2>&1 && [ ! -f "$DATA/.tron-search-neosearch" ]; then
+# Default the omnibox to Kagi once per profile, then respect the user's
+# chrome://settings/search choice. The sentinel filename carries the engine so
+# that changing the default here re-applies once on profiles created earlier.
+if command -v python3 >/dev/null 2>&1 && [ ! -f "$DATA/.tron-search-kagi" ]; then
   TB_PREFS="$DATA/Default/Preferences" python3 - <<'PY' 2>/dev/null || true
 import json, os
 p = os.environ["TB_PREFS"]
@@ -198,16 +199,16 @@ try:
 except Exception:
     d = {}
 d.setdefault("default_search_provider_data", {})["template_url_data"] = {
-    "short_name": "NeoSearch",
-    "keyword": "neosearch.org",
-    "url": "https://neosearch.org/?q={searchTerms}",
-    "suggestions_url": "https://neosearch.org/suggestions?q={searchTerms}",
-    "favicon_url": "https://neosearch.org/favicon-32x32.png",
+    "short_name": "Kagi",
+    "keyword": "kagi.com",
+    "url": "https://kagi.com/search?q={searchTerms}",
+    "suggestions_url": "https://kagi.com/api/autosuggest?q={searchTerms}",
+    "favicon_url": "https://kagi.com/favicon.ico",
     "safe_for_autoreplace": False,
 }
 json.dump(d, open(p, "w"))
 PY
-  mkdir -p "$DATA"; : > "$DATA/.tron-search-neosearch"
+  mkdir -p "$DATA"; : > "$DATA/.tron-search-kagi"
 fi
 
 # Show the feed (ai-sidebar New Tab page) on startup. We can't pass a startup URL —

apps/mobile/src/lib/navigation.test.ts

@@ -23,19 +23,19 @@ describe('normalizeUrl', () => {
 
   it('searches ordinary text', () => {
     expect(normalizeUrl('privacy first browser')).toBe(
-      'https://duckduckgo.com/?q=privacy%20first%20browser',
+      'https://kagi.com/search?q=privacy%20first%20browser',
     );
   });
 
   it('searches unsupported schemes instead of loading them', () => {
     expect(normalizeUrl('javascript:alert(1)')).toBe(
-      'https://duckduckgo.com/?q=javascript%3Aalert(1)',
+      'https://kagi.com/search?q=javascript%3Aalert(1)',
     );
   });
 
   it('does not treat domain-looking text with spaces as a URL', () => {
     expect(normalizeUrl('example.com malicious suffix')).toBe(
-      'https://duckduckgo.com/?q=example.com%20malicious%20suffix',
+      'https://kagi.com/search?q=example.com%20malicious%20suffix',
     );
   });
 });

apps/mobile/src/lib/navigation.ts

@@ -4,7 +4,7 @@ const DOMAIN_OR_IP =
   /^(?:(?:[a-z0-9](?:[a-z0-9-]{0,61}[a-z0-9])?\.)+[a-z]{2,63}|(?:\d{1,3}\.){3}\d{1,3}|localhost)(?::\d{1,5})?(?:[/?#][^\s]*)?$/i;
 
 function searchUrl(query: string): string {
-  return `https://duckduckgo.com/?q=${encodeURIComponent(query)}`;
+  return `https://kagi.com/search?q=${encodeURIComponent(query)}`;
 }
 
 /**

apps/web/public/settings-sections.js

@@ -42,7 +42,7 @@ export async function mountSettingsSections({ store, el, flash }) {
   const cur = await store.get(['feeds', 'tickers', 'leagues', 'searchEngine', 'torSearchEngine']);
 
   // Populate current values (on every mount, e.g. after a cloud pull).
-  if (el('searchEngine')) el('searchEngine').value = cur.searchEngine || 'neosearch';
+  if (el('searchEngine')) el('searchEngine').value = cur.searchEngine || 'kagi';
   if (el('torSearchEngine')) el('torSearchEngine').value = cur.torSearchEngine || 'ahmia';
   if (el('tickers')) el('tickers').value = cur.tickers ?? '';
   if (el('leagues')) el('leagues').value = cur.leagues ?? '';

apps/web/public/settings.html

@@ -80,7 +80,8 @@ <h2>Search</h2>
   <p class="hint">Default search engine for the new-tab search box.</p>
   <label for="searchEngine">New-tab search engine (clearnet)</label>
   <select id="searchEngine">
-    <option value="neosearch">NeoSearch (private, default)</option>
+    <option value="kagi">Kagi (default)</option>
+    <option value="neosearch">NeoSearch (private)</option>
     <option value="xprivo">Xprivo (private)</option>
     <option value="ddg">DuckDuckGo</option>
     <option value="altpower">Altpower</option>