feat: upgrade web GUI to modular ES6 and add Chart.js

This commit completely overhauls the initial GUI:
- Splits monolithic JS/CSS into an ES6 module structure
- Implements an industrial 'Control Room' dark theme
- Adds dynamic file selection endpoints for CSV and JSON judge logs
- Integrates Chart.js to automatically render visualizations from CSV data
- Updates web_gui_plan.md to reflect architectural changes

1 files changed, 87 insertions, 0 deletions

diff --git a/api/static/css/layout.css b/api/static/css/layout.css
new file mode 100644
index 0000000..ef0fc2d
--- /dev/null
+++ b/api/static/css/layout.css
@@ -0,0 +1,87 @@
+.dashboard-root {
+    display: grid;
+    grid-template-columns: 320px 1fr;
+    grid-template-rows: 1fr 300px;
+    height: 100vh;
+    width: 100vw;
+}
+
+/* Sidebar - Left Column */
+.sidebar {
+    grid-row: 1 / -1;
+    background-color: var(--color-bg-1);
+    border-right: var(--border-width) solid var(--color-bg-3);
+    padding: var(--space-lg);
+    display: flex;
+    flex-direction: column;
+    gap: var(--space-xl);
+    z-index: 10;
+}
+
+/* Main Area - Top Right */
+.main-viewport {
+    grid-column: 2;
+    grid-row: 1;
+    overflow-y: auto;
+    background-color: var(--color-bg-0);
+    display: flex;
+    flex-direction: column;
+}
+
+/* Terminal - Bottom Right */
+.terminal-dock {
+    grid-column: 2;
+    grid-row: 2;
+    background-color: var(--color-bg-1);
+    border-top: var(--border-width) solid var(--color-bg-3);
+    display: flex;
+    flex-direction: column;
+    overflow: hidden;
+}
+
+/* Header */
+.app-header {
+    padding: var(--space-md) var(--space-lg);
+    border-bottom: var(--border-width) solid var(--color-bg-3);
+    display: flex;
+    justify-content: space-between;
+    align-items: center;
+}
+
+.logo-area {
+    display: flex;
+    align-items: center;
+    gap: var(--space-sm);
+}
+
+.logo-area h1 {
+    font-size: 1rem;
+    font-weight: 700;
+    letter-spacing: 0.05em;
+    text-transform: uppercase;
+    color: var(--color-accent);
+}
+
+/* Mobile notice */
+@media (max-width: 900px) {
+    .dashboard-root {
+        grid-template-columns: 1fr;
+        grid-template-rows: auto 1fr auto;
+        overflow-y: auto;
+    }
+    .sidebar {
+        grid-row: 1;
+        border-right: none;
+        border-bottom: var(--border-width) solid var(--color-bg-3);
+    }
+    .main-viewport {
+        grid-column: 1;
+        grid-row: 2;
+        height: 500px;
+    }
+    .terminal-dock {
+        grid-column: 1;
+        grid-row: 3;
+        height: 300px;
+    }
+}