fix(e2e): increase page.goto timeout to 30s in explore UI tests

Webkit on macOS CI runners was timing out on page navigation with the
10s timeout. Standardize all page.goto calls to 30s to match the
pattern used elsewhere in the test suite.

Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>

Author: SimplicityGuy

tests/explore/test_explore_ui.py

@@ -13,7 +13,7 @@ class TestExploreUI:
 
     def test_page_loads(self, page: Page, test_server: str) -> None:
         """Test that the explore page loads successfully."""
-        page.goto(test_server, wait_until="domcontentloaded", timeout=10000)
+        page.goto(test_server, wait_until="domcontentloaded", timeout=30000)
         expect(page).to_have_title(re.compile("Explore", re.IGNORECASE))
 
     def test_navbar_visible(self, page: Page, test_server: str) -> None:
@@ -25,14 +25,14 @@ def test_navbar_visible(self, page: Page, test_server: str) -> None:
 
     def test_search_input_visible(self, page: Page, test_server: str) -> None:
         """Test that the search input is visible."""
-        page.goto(test_server, wait_until="domcontentloaded", timeout=10000)
+        page.goto(test_server, wait_until="domcontentloaded", timeout=30000)
 
         search_input = page.locator("#searchInput")
         expect(search_input).to_be_visible(timeout=5000)
 
     def test_search_type_dropdown(self, page: Page, test_server: str) -> None:
         """Test the search type dropdown works."""
-        page.goto(test_server, wait_until="domcontentloaded", timeout=10000)
+        page.goto(test_server, wait_until="domcontentloaded", timeout=30000)
 
         # Find the search type button
         type_btn = page.locator("#searchTypeBtn")
@@ -62,7 +62,7 @@ def test_pane_switching(self, page: Page, test_server: str) -> None:
 
     def test_graph_placeholder_visible(self, page: Page, test_server: str) -> None:
         """Test that the graph placeholder is shown before search."""
-        page.goto(test_server, wait_until="domcontentloaded", timeout=10000)
+        page.goto(test_server, wait_until="domcontentloaded", timeout=30000)
 
         placeholder = page.locator("#graphPlaceholder")
         expect(placeholder).to_be_visible(timeout=5000)
@@ -90,7 +90,7 @@ def test_responsive_layout(self, page: Page, test_server: str) -> None:
 
     def test_info_panel_hidden_by_default(self, page: Page, test_server: str) -> None:
         """Test that the info panel is hidden before any node is clicked."""
-        page.goto(test_server, wait_until="domcontentloaded", timeout=10000)
+        page.goto(test_server, wait_until="domcontentloaded", timeout=30000)
 
         info_panel = page.locator("#infoPanel")
         # The panel exists but should not have the 'open' class
@@ -190,7 +190,7 @@ class TestExploreSearchInteraction:
 
     def test_search_type_switching(self, page: Page, test_server: str) -> None:
         """Test switching between search types via dropdown."""
-        page.goto(test_server, wait_until="domcontentloaded", timeout=10000)
+        page.goto(test_server, wait_until="domcontentloaded", timeout=30000)
 
         type_btn = page.locator("#searchTypeBtn")
         expect(type_btn).to_have_text("Artist", timeout=5000)
@@ -218,7 +218,7 @@ def test_search_type_switching(self, page: Page, test_server: str) -> None:
 
     def test_autocomplete_shows_results(self, page: Page, test_server: str) -> None:
         """Test that typing in search shows autocomplete results."""
-        page.goto(test_server, wait_until="domcontentloaded", timeout=10000)
+        page.goto(test_server, wait_until="domcontentloaded", timeout=30000)
 
         search_input = page.locator("#searchInput")
         search_input.fill("Radio")
@@ -233,7 +233,7 @@ def test_autocomplete_shows_results(self, page: Page, test_server: str) -> None:
 
     def test_autocomplete_item_click_triggers_search(self, page: Page, test_server: str) -> None:
         """Test that clicking an autocomplete item triggers a search."""
-        page.goto(test_server, wait_until="domcontentloaded", timeout=10000)
+        page.goto(test_server, wait_until="domcontentloaded", timeout=30000)
 
         search_input = page.locator("#searchInput")
         search_input.fill("Radio")
@@ -255,7 +255,7 @@ def test_autocomplete_item_click_triggers_search(self, page: Page, test_server:
 
     def test_graph_appears_after_search(self, page: Page, test_server: str) -> None:
         """Test that the graph appears after performing a search."""
-        page.goto(test_server, wait_until="domcontentloaded", timeout=10000)
+        page.goto(test_server, wait_until="domcontentloaded", timeout=30000)
 
         search_input = page.locator("#searchInput")
         search_input.fill("Radio")
@@ -277,7 +277,7 @@ def test_graph_appears_after_search(self, page: Page, test_server: str) -> None:
 
     def test_trends_pane_search(self, page: Page, test_server: str) -> None:
         """Test searching on the Trends pane loads chart data."""
-        page.goto(test_server, wait_until="domcontentloaded", timeout=10000)
+        page.goto(test_server, wait_until="domcontentloaded", timeout=30000)
 
         # Switch to trends pane
         trends_link = page.locator("[data-pane='trends']")
@@ -312,7 +312,7 @@ def test_graph_legend_visible(self, page: Page, test_server: str) -> None:
 
     def test_trends_placeholder_visible(self, page: Page, test_server: str) -> None:
         """Test that the trends placeholder is visible before search."""
-        page.goto(test_server, wait_until="domcontentloaded", timeout=10000)
+        page.goto(test_server, wait_until="domcontentloaded", timeout=30000)
 
         # Switch to trends pane
         trends_link = page.locator("[data-pane='trends']")