feat: show the overview filter summary only when filters are active (#60)

## What

The Issues and Pull Requests overviews pinned a centered filter-summary caption ("Open") below the title even in the default state, which just duplicated the filter icon. Now the summary appears only when a non-default state or involvement scope is active, so the default view carries no extra chrome and the strip becomes a clear signal that the list is filtered.

Verified in the iPhone 17 Pro simulator: default state shows no strip and no gap, and the filter icon still reflects state. Builds clean on Xcode 26, SwiftLint passes.

---

I grant Stefan Hausotte an irrevocable, worldwide, royalty-free license to use, sublicense, and distribute my contribution, including through Apple's App Store under the project's App Store exception.

Reviewed-on: https://codeberg.org/secana/Forji/pulls/60

Forji/Forji/Views/SearchableOverviewView.swift

@@ -144,13 +144,15 @@ struct SearchableOverviewView<Row: View, Detail: View, CreateView: View>: View {
                 }
                 .listStyle(.insetGrouped)
                 .safeAreaInset(edge: .top) {
-                    Text(filterSummaryText)
-                        .font(.caption)
-                        .foregroundStyle(.secondary)
-                        .frame(maxWidth: .infinity)
-                        .padding(.horizontal)
-                        .padding(.vertical, 6)
-                        .accessibilityIdentifier("filter-summary")
+                    if hasNonDefaultFilters {
+                        Text(filterSummaryText)
+                            .font(.caption)
+                            .foregroundStyle(.secondary)
+                            .frame(maxWidth: .infinity)
+                            .padding(.horizontal)
+                            .padding(.vertical, 6)
+                            .accessibilityIdentifier("filter-summary")
+                    }
                 }
             }
 

Forji/ForjiUITests/IssueUITests.swift

@@ -37,17 +37,17 @@ final class IssueUITests: ForgejoReadOnlyUITestBase {
         // Wait for list to load
         XCTAssertTrue(app.cells.firstMatch.waitForExistence(timeout: 10), "Issues should load")
 
-        // Default filter summary should show "Open" (default scope is All involvement)
+        // In the default state (Open + All involvement) the summary is hidden.
         let filterSummary = app.staticTexts["filter-summary"]
-        XCTAssertTrue(filterSummary.waitForExistence(timeout: 5))
-        XCTAssertEqual(filterSummary.label, "Open")
+        XCTAssertFalse(filterSummary.exists, "Filter summary should be hidden in the default state")
 
         let filterMenuButton = app.buttons["filter-menu-button"]
 
-        // Tap "Assigned to you" via filter menu
+        // Selecting a non-default scope reveals the summary.
         filterMenuButton.tap()
         app.buttons["Assigned to you"].tap()
         sleep(2)
+        XCTAssertTrue(filterSummary.waitForExistence(timeout: 5))
         XCTAssertTrue(filterSummary.label.contains("Assigned to you"))
 
         // Tap "Mentioned" via filter menu

Forji/ForjiUITests/PullRequestUITests.swift

@@ -111,17 +111,17 @@ final class PullRequestUITests: ForgejoReadOnlyUITestBase {
         // Reset filters to defaults (previous test may have changed them)
         resetOverviewFilters()
 
-        // Default filter summary should show "Open" (default scope is All involvement)
+        // In the default state (Open + All involvement) the summary is hidden.
         let filterSummary = app.staticTexts["filter-summary"]
-        XCTAssertTrue(filterSummary.waitForExistence(timeout: 5))
-        XCTAssertEqual(filterSummary.label, "Open")
+        XCTAssertFalse(filterSummary.exists, "Filter summary should be hidden in the default state")
 
         let filterMenuButton = app.buttons["filter-menu-button"]
 
-        // Tap "Assigned to you" via filter menu
+        // Selecting a non-default scope reveals the summary.
         filterMenuButton.tap()
         app.buttons["Assigned to you"].tap()
         sleep(2)
+        XCTAssertTrue(filterSummary.waitForExistence(timeout: 5))
         XCTAssertTrue(filterSummary.label.contains("Assigned to you"))
 
         // Tap "Mentioned" via filter menu