fix: court/trajectory layout, net orientation, camera position

- Court and Trajectory tabs: 3D viewport full screen, cameras small
  at bottom center as horizontal thumbnails
- Fix net orientation (was perpendicular, now spans court width)
- Default camera: center line, 1m from net, 1m height

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

src/web/templates/index.html

@@ -94,34 +94,43 @@
         }
         .viewport-3d canvas { width: 100% !important; height: 100% !important; }
 
-        /* Bottom layout: 3D + sidebar panel */
-        .court-bottom, .traj-bottom {
+        /* Full-height tab layout: 3D on top, small bottom bar */
+        .tab-full {
             display: flex;
-            height: calc(100vh - 100px - 30vw);
-            overflow: hidden;
+            flex-direction: column;
+            height: calc(100vh - 52px);
         }
-        .court-main, .traj-main {
+        .tab-full .viewport-3d {
             flex: 1;
-            position: relative;
-            min-width: 0;
-        }
-        .court-main .viewport-3d,
-        .traj-main .viewport-3d {
-            width: 100%;
-            height: 100%;
+            height: auto;
             border-top: none;
         }
+        .bottom-bar {
+            display: flex;
+            align-items: center;
+            justify-content: center;
+            gap: 8px;
+            padding: 6px 8px;
+            background: #0d0d20;
+            border-top: 1px solid #222;
+        }
+        .cam-thumb {
+            width: 200px;
+            flex-shrink: 0;
+        }
+        .cam-thumb img {
+            width: 100%;
+            border-radius: 4px;
+            border: 1px solid #222;
+            display: block;
+        }
 
         /* Sidebar panel (calibration, etc.) */
         .sidebar-panel {
-            width: 220px;
-            flex-shrink: 0;
             display: flex;
-            flex-direction: column;
+            align-items: center;
             gap: 8px;
-            padding: 10px;
-            background: #111128;
-            border-left: 1px solid #222;
+            padding: 4px 12px;
         }
         .btn-calibrate {
             width: 100%;
@@ -145,16 +154,12 @@
         .calibrate-status .ok { color: #4ecca3; }
         .calibrate-status .fail { color: #ff4444; }
 
-        /* VAR panel (sidebar version) */
-        .var-panel-sidebar {
-            width: 220px;
-            flex-shrink: 0;
+        /* VAR panel (bottom bar version) */
+        .var-panel-bottom {
             display: flex;
-            flex-direction: column;
-            gap: 8px;
-            padding: 10px;
-            background: #111128;
-            border-left: 1px solid #222;
+            align-items: center;
+            gap: 10px;
+            padding: 4px 12px;
         }
         .var-indicator {
             display: flex;
@@ -274,55 +279,43 @@
     </div>
 </div>
 
-<!-- Tab 2: Court — cameras on top, 3D below -->
+<!-- Tab 2: Court — 3D main, cameras small bottom center -->
 <div class="tab-content" id="tab-court">
-    <div class="cameras">
-        <div class="cam-box">
-            <img id="court-cam1" alt="Camera 1">
-        </div>
-        <div class="cam-box">
-            <img id="court-cam0" alt="Camera 0">
-        </div>
-    </div>
-    <div class="court-bottom">
-        <div class="court-main">
-            <div class="viewport-3d" id="court-3d"></div>
-        </div>
-        <div class="sidebar-panel">
-            <button class="btn-calibrate" id="btnCalibrate" onclick="doCalibrate()">Calibrate Court</button>
-            <div class="calibrate-status" id="calStatus">
-                <span id="calStatusText">Not calibrated</span>
+    <div class="tab-full">
+        <div class="viewport-3d" id="court-3d"></div>
+        <div class="bottom-bar">
+            <div class="cam-thumb"><img id="court-cam1" alt="Camera 1"></div>
+            <div class="sidebar-panel">
+                <button class="btn-calibrate" id="btnCalibrate" onclick="doCalibrate()">Calibrate Court</button>
+                <div class="calibrate-status" id="calStatus">
+                    <span id="calStatusText">Not calibrated</span>
+                </div>
             </div>
+            <div class="cam-thumb"><img id="court-cam0" alt="Camera 0"></div>
         </div>
     </div>
 </div>
 
-<!-- Tab 3: Trajectory — cameras on top, 3D below -->
+<!-- Tab 3: Trajectory — 3D main, cameras small bottom center -->
 <div class="tab-content" id="tab-trajectory">
-    <div class="cameras">
-        <div class="cam-box">
-            <img id="traj-cam1" alt="Camera 1">
-        </div>
-        <div class="cam-box">
-            <img id="traj-cam0" alt="Camera 0">
-        </div>
-    </div>
-    <div class="traj-bottom">
-        <div class="traj-main">
-            <div class="viewport-3d" id="trajectory-3d"></div>
-        </div>
-        <div class="var-panel-sidebar">
-            <div class="var-indicator">
-                <div class="var-dot" id="varDot"></div>
-                <div class="var-label" id="varLabel">VAR</div>
+    <div class="tab-full">
+        <div class="viewport-3d" id="trajectory-3d"></div>
+        <div class="bottom-bar">
+            <div class="cam-thumb"><img id="traj-cam1" alt="Camera 1"></div>
+            <div class="var-panel-bottom">
+                <div class="var-indicator">
+                    <div class="var-dot" id="varDot"></div>
+                    <div class="var-label" id="varLabel">VAR</div>
+                </div>
+                <div class="var-info" id="varInfo">
+                    <div class="var-line" id="varLine">No events</div>
+                    <div class="var-timer" id="varTimer"></div>
+                    <div class="var-dist" id="varDist"></div>
+                </div>
+                <img class="var-snapshot" id="varSnapshot" style="display:none">
+                <div class="var-snapshot empty" id="varSnapshotEmpty">No snapshot</div>
             </div>
-            <div class="var-info" id="varInfo">
-                <div class="var-line" id="varLine">No events</div>
-                <div class="var-timer" id="varTimer"></div>
-                <div class="var-dist" id="varDist"></div>
-            </div>
-            <img class="var-snapshot" id="varSnapshot" style="display:none">
-            <div class="var-snapshot empty" id="varSnapshotEmpty">No snapshot</div>
+            <div class="cam-thumb"><img id="traj-cam0" alt="Camera 0"></div>
         </div>
     </div>
 </div>
@@ -476,7 +469,7 @@ function initCourtScene() {
     courtScene.background = new THREE.Color(0x0a0a1a);
 
     courtCamera = new THREE.PerspectiveCamera(50, w / h, 0.1, 100);
-    courtCamera.position.set(6.7, -8, 12);
+    courtCamera.position.set(7.7, 3.05, 1);
     courtCamera.lookAt(6.7, 3.05, 0);
 
     courtRenderer = new THREE.WebGLRenderer({ antialias: true });
@@ -498,7 +491,7 @@ function initCourtScene() {
 
     // Net (wide plane)
     var netMat = new THREE.MeshBasicMaterial({ color: 0xffffff, transparent: true, opacity: 0.4, side: THREE.DoubleSide });
-    var netWide = new THREE.PlaneGeometry(6.1, 0.914);
+    var netWide = new THREE.PlaneGeometry(0.914, 6.1);
     var netWideMesh = new THREE.Mesh(netWide, netMat);
     netWideMesh.rotation.y = Math.PI / 2;
     netWideMesh.position.set(6.7, 3.05, 0.457);
@@ -549,15 +542,15 @@ function initTrajectoryScene() {
     trajScene.background = new THREE.Color(0x0a0a1a);
 
     trajCamera = new THREE.PerspectiveCamera(50, w / h, 0.1, 100);
-    trajCamera.position.set(6.7, -10, 8);
-    trajCamera.lookAt(6.7, 3.05, 1);
+    trajCamera.position.set(7.7, 3.05, 1);
+    trajCamera.lookAt(6.7, 3.05, 0);
 
     trajRenderer = new THREE.WebGLRenderer({ antialias: true });
     trajRenderer.setSize(w, h);
     container.appendChild(trajRenderer.domElement);
 
     var controls = new THREE.OrbitControls(trajCamera, trajRenderer.domElement);
-    controls.target.set(6.7, 3.05, 1);
+    controls.target.set(6.7, 3.05, 0);
     controls.update();
 
     // Court surface
@@ -571,7 +564,7 @@ function initTrajectoryScene() {
 
     // Net
     var netMat = new THREE.MeshBasicMaterial({ color: 0xffffff, transparent: true, opacity: 0.3, side: THREE.DoubleSide });
-    var netMesh = new THREE.Mesh(new THREE.PlaneGeometry(6.1, 0.914), netMat);
+    var netMesh = new THREE.Mesh(new THREE.PlaneGeometry(0.914, 6.1), netMat);
     netMesh.rotation.y = Math.PI / 2;
     netMesh.position.set(6.7, 3.05, 0.457);
     trajScene.add(netMesh);