Add essential view templates for mods and worlds functionality

- views/mods/details.ejs: Detailed mod information and management page
- views/mods/index.ejs: Main mod management interface with world selection
- views/worlds/details.ejs: World configuration and settings page
- views/worlds/new.ejs: New world creation form

These templates were previously ignored but are required for core functionality.

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

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

views/worlds/new.ejs

@@ -0,0 +1,70 @@
+<%
+const body = `
+    <div class="page-header">
+        <div style="margin-bottom: 16px;">
+            <a href="/worlds" style="color: var(--primary-color); text-decoration: none;">&larr; Back to Worlds</a>
+        </div>
+        <h2>Create New World</h2>
+        <p>Create a new Luanti world</p>
+    </div>
+
+    ${typeof error !== 'undefined' && error ? `
+        <div class="alert alert-danger">
+            ${error}
+        </div>
+    ` : ''}
+
+    <div class="card">
+        <form method="POST" action="/worlds/create">
+            ${typeof csrfToken !== 'undefined' && csrfToken ? `<input type="hidden" name="_csrf" value="${csrfToken}">` : ''}
+            <div class="form-group">
+                <label for="name">World Name *</label>
+                <input 
+                    type="text" 
+                    id="name" 
+                    name="name" 
+                    class="form-control" 
+                    required 
+                    pattern="[a-zA-Z0-9_-]+" 
+                    title="Only letters, numbers, underscore and hyphen allowed"
+                    value="${typeof formData !== 'undefined' && formData && formData.name ? formData.name : ''}"
+                />
+                <small style="color: var(--text-secondary);">Only letters, numbers, underscore and hyphen allowed</small>
+            </div>
+
+            <div class="form-group">
+                <label for="gameid">Game Type *</label>
+                <select id="gameid" name="gameid" class="form-control" required style="max-width: 300px;">
+                    ${typeof games !== 'undefined' && games.length > 0 ? games.map((game, index) => `
+                        <option 
+                            value="${game.name}" 
+                            ${typeof formData !== 'undefined' && formData && formData.gameid === game.name ? 'selected' : (index === 0 && (typeof formData === 'undefined' || !formData || !formData.gameid) ? 'selected' : '')}
+                        >
+                            ${game.title || game.name}
+                        </option>
+                    `).join('') : `
+                        <option value="minetest_game" selected>Minetest Game</option>
+                        <option value="minimal">Minimal</option>
+                    `}
+                </select>
+                <small style="color: var(--text-secondary);">Choose the base game for your world</small>
+            </div>
+
+            <div style="display: flex; gap: 12px; margin-top: 24px;">
+                <button type="submit" class="btn btn-primary">Create World</button>
+                <a href="/worlds" class="btn btn-secondary">Cancel</a>
+            </div>
+        </form>
+    </div>
+
+    <div class="alert alert-info" style="margin-top: 24px;">
+        <strong>World Creation Notes:</strong><br>
+        • World creation may take a few moments to complete<br>
+        • You will be redirected to the worlds list when creation starts<br>
+        • Additional world settings can be configured after creation<br>
+        • Make sure the selected game is properly installed
+    </div>
+`;
+%>
+
+<%- include('../layout', { body: body, currentPage: 'worlds', title: title }) %>