feat: Workshop Phase 2 — Scene MVP (Three.js room) (#401)

Co-authored-by: Kimi Agent <kimi@timmy.local>
Co-committed-by: Kimi Agent <kimi@timmy.local>

static/world/style.css

@@ -0,0 +1,89 @@
+/* Workshop 3D scene overlay styles */
+
+* {
+    margin: 0;
+    padding: 0;
+    box-sizing: border-box;
+}
+
+body {
+    overflow: hidden;
+    background: #0a0a14;
+    font-family: "Courier New", monospace;
+    color: #e0e0e0;
+    touch-action: none;
+}
+
+canvas {
+    display: block;
+}
+
+#overlay {
+    position: fixed;
+    top: 0;
+    left: 0;
+    width: 100%;
+    height: 100%;
+    pointer-events: none;
+    z-index: 10;
+}
+
+#status {
+    position: absolute;
+    top: 16px;
+    left: 16px;
+    font-size: 14px;
+    opacity: 0.8;
+}
+
+#status .name {
+    font-size: 18px;
+    font-weight: bold;
+    color: #daa520;
+}
+
+#status .mood {
+    font-size: 13px;
+    color: #aaa;
+    margin-top: 4px;
+}
+
+#speech-area {
+    position: absolute;
+    bottom: 24px;
+    left: 50%;
+    transform: translateX(-50%);
+    max-width: 480px;
+    width: 90%;
+    text-align: center;
+    font-size: 15px;
+    line-height: 1.5;
+    color: #ccc;
+    opacity: 0;
+    transition: opacity 0.4s ease;
+}
+
+#speech-area.visible {
+    opacity: 1;
+}
+
+#speech-area .bubble {
+    background: rgba(10, 10, 20, 0.85);
+    border: 1px solid rgba(218, 165, 32, 0.3);
+    border-radius: 8px;
+    padding: 12px 20px;
+}
+
+#connection-dot {
+    position: absolute;
+    top: 18px;
+    right: 16px;
+    width: 8px;
+    height: 8px;
+    border-radius: 50%;
+    background: #555;
+}
+
+#connection-dot.connected {
+    background: #00b450;
+}