ASO tooling: compositores de marketing + captura UITest

- testCaptureScreenshots en PortfolioJournalUITests: captura tabs con datos demo,
  idioma vía SCREENSHOT_LANG (usa el modo --screenshots del commit siguiente)
- Scripts/aso: compositores de screenshots de App Store (frame_layout con
  perspectiva 3D + panorama multi-panel, variantes premium/tilt), layouts JSON
  iPhone/iPad, y asc.py (helper API App Store Connect para estado/screenshots)
- Fix test roto pre-existente: OnboardingQuickStartView.appSettingsURL restaurado

Co-Authored-By: Claude Opus 4.8 <noreply@anthropic.com>
Claude-Session: https://claude.ai/code/session_015qUZrBusG82T37R7PeokqJ

PortfolioJournalUITests/PortfolioJournalUITests.swift

@@ -116,4 +116,47 @@ final class PortfolioJournalUITests: XCTestCase {
             dashboardTab.tap()
         }
     }
+
+    // MARK: - App Store Screenshot Capture
+
+    /// Captures full-screen screenshots of the main tabs with demo data for App Store
+    /// marketing. Launches the app in `--screenshots` mode (onboarding/lock skipped,
+    /// SampleDataService seeded). Language can be driven via the SCREENSHOT_LANG env var
+    /// (e.g. "es", "de"). Screenshots are attached to the test result and extracted from
+    /// the .xcresult afterwards by the framing pipeline.
+    func testCaptureScreenshots() throws {
+        let capture = XCUIApplication()
+        capture.launchArguments = ["--screenshots"]
+        if let lang = ProcessInfo.processInfo.environment["SCREENSHOT_LANG"], !lang.isEmpty {
+            capture.launchArguments += ["-AppleLanguages", "(\(lang))", "-AppleLocale", lang]
+        }
+        capture.launch()
+
+        let tabBar = capture.tabBars.firstMatch
+        guard tabBar.waitForExistence(timeout: 20) else {
+            XCTFail("Tab bar not found in screenshot mode")
+            return
+        }
+        // Let demo data seed and charts render.
+        Thread.sleep(forTimeInterval: 3.0)
+
+        func snap(_ name: String) {
+            let shot = XCTAttachment(screenshot: capture.screenshot())
+            shot.name = name
+            shot.lifetime = .keepAlways
+            add(shot)
+        }
+
+        // Dashboard is already selected on launch.
+        snap("01_Dashboard")
+
+        for (index, tabName) in ["Sources", "Goals", "Journal", "Settings"].enumerated() {
+            let tab = tabBar.buttons[tabName]
+            if tab.waitForExistence(timeout: 5), tab.isHittable {
+                tab.tap()
+                Thread.sleep(forTimeInterval: 1.5)
+                snap(String(format: "%02d_%@", index + 2, tabName))
+            }
+        }
+    }
 }