Add views directory and UI improvements

- Add all view templates (servers, auth, dashboard, admin, layouts, errors, terminal)
- Fix SSH double decryption bug in SSHService
- Fix router parameter type casting for strict_types
- Add missing error views (401, 403, 404)
- Add nginx manager with file editing
- Add SSL certificates management
- Add database manager with phpMyAdmin-like interface
- Add sidebar server accordion

views/auth/profile.php

@@ -0,0 +1,64 @@
+<?php $user = $user ?? []; ?>
+
+<div class="page-header">
+    <h1 class="page-title">My Profile</h1>
+    <p class="page-subtitle">Manage your account settings</p>
+</div>
+
+<div class="card" style="max-width: 600px;">
+    <div class="card-header">
+        <h2><i class="fas fa-user-circle"></i> Account Information</h2>
+    </div>
+    <div class="card-body">
+        <dl class="details-list">
+            <dt>Username</dt>
+            <dd><?= htmlspecialchars($user['username'] ?? '') ?></dd>
+            <dt>Role</dt>
+            <dd><span class="badge badge-info"><?= htmlspecialchars(ucfirst($user['role'] ?? '')) ?></span></dd>
+            <dt>Last Login</dt>
+            <dd><?= htmlspecialchars($user['last_login_at'] ?? 'Never') ?></dd>
+            <dt>Created</dt>
+            <dd><?= htmlspecialchars($user['created_at'] ?? '') ?></dd>
+        </dl>
+    </div>
+</div>
+
+<div class="card" style="max-width: 600px; margin-top: 1rem;">
+    <div class="card-header">
+        <h2><i class="fas fa-edit"></i> Update Profile</h2>
+    </div>
+    <div class="card-body">
+        <form method="POST" action="/profile" class="form">
+            <input type="hidden" name="_csrf_token" value="<?= $this->csrfToken() ?>">
+
+            <div class="form-group">
+                <label for="email">Email Address</label>
+                <input type="email" id="email" name="email" class="form-input"
+                       value="<?= htmlspecialchars($user['email'] ?? '') ?>" required>
+            </div>
+
+            <div class="form-section">
+                <h3>Change Password</h3>
+                <div class="form-group">
+                    <label for="current_password">Current Password</label>
+                    <input type="password" id="current_password" name="current_password" class="form-input" required>
+                </div>
+                <div class="form-group">
+                    <label for="new_password">New Password (leave blank to keep current)</label>
+                    <input type="password" id="new_password" name="new_password" class="form-input"
+                           placeholder="Minimum 8 characters" minlength="8">
+                </div>
+                <div class="form-group">
+                    <label for="confirm_password">Confirm New Password</label>
+                    <input type="password" id="confirm_password" name="confirm_password" class="form-input">
+                </div>
+            </div>
+
+            <div class="form-actions">
+                <button type="submit" class="btn btn-primary">
+                    <i class="fas fa-save"></i> Update Profile
+                </button>
+            </div>
+        </form>
+    </div>
+</div>