v0.3.1: CSS jetzt extern via <link> statt JS-injected

Drei Probleme mit der JS-Injection:
1. CSS kommt NACH First Paint → User sieht kurze obv-Layout, dann 'springt'
   zu responsive Layout (FOUC = Flash of Unstyled Content)
2. JS-Injection kann fehlschlagen (head nicht ready, Browser-Inkonsistenzen)
3. Inline <style>-Tag wird nicht gecacht, lädt bei jedem Reload

Fix: hermes-custom.css als separate Datei, geladen via
<link rel='stylesheet'> im HEAD. Server liefert sie automatisch.

Außerdem: Mobile-Mode zeigt Graph als Bottom-Panel (140px), nicht mehr
display:none. User behält Wiki-Beziehungen auch auf Phone.

vault-custom.js.js behält injectResponsiveCSS als no-op für Backward-Compat.

🤖 Generated with [Claude Code](https://claude.com/claude-code)

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

hermes-custom.css

@@ -0,0 +1,146 @@
+/* HermesCustom CSS — Lukas' responsive-layout additions for obsidian-web-viewer.
+ *
+ * Loaded via <link rel="stylesheet"> in vault.html (one-line patch)
+ * BEFORE obv's main <style>, so that our rules apply at first paint
+ * (no FOUC, no layout shift).
+ *
+ * Layout classes (toggled by vault-custom.js):
+ *   .hermes-rc               — base marker (added once)
+ *   .hermes-mobile           — <768px viewport (tree=hamburger, graph=bottom-panel)
+ *   .hermes-tablet           — 768-1023px (tree=visible, graph=bottom-panel)
+ *   .hermes-desktop          — >=1024px (3-panel layout, no overrides)
+ *
+ * Sidebar state:
+ *   .hermes-sidebar-open     — hamburger toggled (mobile only)
+ *
+ * Strategy: every selector starts with `.vault-app.hermes-rc` to win
+ * specificity against obv's `.vault-app` only.
+ */
+
+/* === Always-on (no media query) === */
+.vault-app.hermes-rc {
+    box-sizing: border-box !important;
+    width: 100% !important;
+    max-width: 100vw !important;
+    overflow-x: hidden !important;
+}
+.vault-app.hermes-rc .vault-content {
+    overflow-x: hidden !important;
+    overflow-y: auto !important;
+    max-width: 100% !important;
+    word-wrap: break-word !important;
+    overflow-wrap: break-word !important;
+    hyphens: auto !important;
+}
+.vault-app.hermes-rc .vault-sidebar {
+    overflow-x: hidden !important;
+    overflow-y: auto !important;
+}
+.vault-app.hermes-rc .vault-graph {
+    position: relative !important;
+    overflow: hidden !important;
+}
+
+/* Hamburger button (hidden by default, shown only in mobile) */
+.hermes-mobile-toggle {
+    display: none;
+    background: var(--bg-secondary);
+    border: 1px solid var(--border);
+    color: var(--text-secondary);
+    padding: 6px 12px;
+    border-radius: 4px;
+    cursor: pointer;
+    font-size: 16px;
+    margin-right: 8px;
+    line-height: 1;
+}
+.hermes-mobile-toggle:hover {
+    color: var(--accent);
+    border-color: var(--accent);
+}
+
+/* === Mobile (<768px) — tree hamburger + graph bottom-panel === */
+@media (max-width: 767px) {
+    .vault-app.hermes-rc.hermes-mobile {
+        grid-template-columns: 1fr !important;
+        grid-template-rows: 48px 1fr 140px !important;
+        height: 100vh !important;
+    }
+    .vault-app.hermes-rc.hermes-mobile .vault-sidebar {
+        position: fixed !important;
+        top: 48px !important;
+        left: 0 !important;
+        bottom: 0 !important;
+        width: 280px !important;
+        max-width: 85vw !important;
+        transform: translateX(-100%) !important;
+        transition: transform 0.25s ease-in-out !important;
+        z-index: 1000 !important;
+        background: var(--bg-secondary) !important;
+        border-right: 1px solid var(--border) !important;
+        display: block !important;
+        height: calc(100vh - 48px) !important;
+    }
+    .vault-app.hermes-rc.hermes-mobile .vault-sidebar.hermes-sidebar-open {
+        transform: translateX(0) !important;
+    }
+    .vault-app.hermes-rc.hermes-mobile .vault-graph {
+        grid-column: 1 / -1 !important;
+        grid-row: 3 !important;
+        height: 140px !important;
+        border-left: none !important;
+        border-top: 1px solid var(--border) !important;
+        display: block !important; /* keep visible, just at bottom */
+    }
+    .vault-app.hermes-rc.hermes-mobile .vault-content {
+        grid-column: 1 !important;
+        grid-row: 2 !important;
+        padding: 16px 20px !important;
+        max-width: 100% !important;
+    }
+    .vault-app.hermes-rc.hermes-mobile .hermes-mobile-toggle {
+        display: inline-block !important;
+    }
+    /* Backdrop for open hamburger */
+    .hermes-sidebar-backdrop {
+        display: none;
+        position: fixed;
+        top: 48px;
+        left: 0;
+        right: 0;
+        bottom: 0;
+        background: rgba(0, 0, 0, 0.5);
+        z-index: 999;
+    }
+    .vault-app.hermes-rc.hermes-mobile .hermes-sidebar-backdrop.hermes-backdrop-visible {
+        display: block;
+    }
+}
+
+/* === Tablet (768px-1023px) — tree visible, graph bottom-panel === */
+@media (min-width: 768px) and (max-width: 1023px) {
+    .vault-app.hermes-rc.hermes-tablet {
+        grid-template-columns: 200px 1fr !important;
+        grid-template-rows: 48px 1fr 200px !important;
+        height: 100vh !important;
+    }
+    .vault-app.hermes-rc.hermes-tablet .vault-sidebar {
+        width: 200px !important;
+        max-width: 200px !important;
+    }
+    .vault-app.hermes-rc.hermes-tablet .vault-graph {
+        grid-column: 1 / -1 !important;
+        grid-row: 3 !important;
+        height: 200px !important;
+        border-left: none !important;
+        border-top: 1px solid var(--border) !important;
+    }
+    .vault-app.hermes-rc.hermes-tablet .vault-content {
+        grid-column: 2 !important;
+        grid-row: 2 !important;
+        padding: 20px 28px !important;
+    }
+}
+
+/* === Desktop (≥1024px) — leave obv default layout === */
+/* No overrides needed; we just mark .hermes-desktop class so JS knows */