Add 3 passing UI tests (batch 5): heatmap, reduce motion, high contrast

- TC-148: Year View heatmap grid renders with data (added accessibility ID)
- TC-143: App navigable with Reduce Motion enabled
- TC-144: App navigable with High Contrast mode enabled
- Marked 89 blocked tests RED in QA spreadsheet

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

Tests iOS/YearViewHeatmapTests.swift

@@ -0,0 +1,37 @@
+//
+//  YearViewHeatmapTests.swift
+//  Tests iOS
+//
+//  TC-148: Year View heatmap grid renders with data.
+//
+
+import XCTest
+
+final class YearViewHeatmapTests: BaseUITestCase {
+    override var seedFixture: String? { "week_of_moods" }
+    override var bypassSubscription: Bool { true }
+
+    /// TC-148: Year View heatmap grid is visible and rendered.
+    func testYearView_HeatmapRendered() {
+        let tabBar = TabBarScreen(app: app)
+        tabBar.tapYear()
+
+        XCTAssertTrue(tabBar.yearTab.isSelected, "Year tab should be selected")
+
+        // Heatmap grid should be visible
+        let heatmap = app.element(UITestID.Year.heatmap)
+        XCTAssertTrue(
+            heatmap.waitForExistence(timeout: 8),
+            "Year View heatmap grid should be visible with data"
+        )
+
+        // Stats section should also be visible (has data)
+        let statsSection = app.element(UITestID.Year.statsSection)
+        XCTAssertTrue(
+            statsSection.waitForExistence(timeout: 5),
+            "Year stats section should be visible"
+        )
+
+        captureScreenshot(name: "year_heatmap_rendered")
+    }
+}