feat: add disk-safety warning step to setup wizard + health retention setting

- Add dedicated 'Disk Usage Note' step to setup wizard, shown after the
  configuration summary. Warns that health history, container stats, and
  event logs accumulate and links to Settings -> Health for retention limits.
- Repoint the finish button to the new step (summary now has 'Continue ->').
- Remove the now-redundant inline disk tip from the JS-rendered summary.
- Add 'Max Entries Per Service' (default 500) setting to the Health -> Configure
  -> Global Settings panel alongside the existing retention-days setting.

status/index.html

@@ -680,7 +680,47 @@
 
         <div class="setup-wizard-buttons">
           <button id="setup-summary-back">← Back</button>
-          <button id="setup-finish" class="setup-btn-primary" style="background: var(--ok-bg); border-color: var(--ok-fg); color: var(--ok-fg);">✓ Finish Setup</button>
+          <button id="setup-summary-next" class="setup-btn-primary">Continue →</button>
+        </div>
+      </div>
+
+      <!-- Disk Safety Warning step (shown after the configuration summary) -->
+      <div class="setup-step" id="setup-step-disk-safety" style="display: none;">
+        <h2 style="margin: 0 0 8px;">⚠️ Disk Usage Note</h2>
+        <p class="setup-desc">Important information about storage before you finish</p>
+
+        <div style="margin-top: 8px; padding: 18px 20px; background: color-mix(in srgb, var(--warn-fg, #f39c12) 12%, transparent); border-radius: 10px; border: 1px solid var(--warn-fg, #f39c12);">
+          <div style="display: flex; gap: 12px; align-items: flex-start;">
+            <span style="font-size: 1.5rem; line-height: 1.2;">⚠️</span>
+            <div style="font-size: 0.92rem; line-height: 1.55; color: var(--text);">
+              <strong style="color: var(--warn-fg, #f39c12);">Disk Usage Note:</strong>
+              DashCaddy stores health check history, container statistics, and event logs.
+              On a busy server, this data can accumulate over time.
+              Set appropriate retention limits in <strong>Settings → Health</strong> to prevent disk fill.
+            </div>
+          </div>
+        </div>
+
+        <div style="margin-top: 16px; padding: 14px 16px; background: var(--card-bg); border-radius: 8px; border: 1px solid var(--border);">
+          <strong style="font-size: 0.9rem;">📋 Recommended after setup</strong>
+          <ul style="margin: 8px 0 0; padding-left: 20px; font-size: 0.85rem; color: var(--muted); line-height: 1.6;">
+            <li>Open <strong>Health → Configure → Global Settings</strong></li>
+            <li>Set a <strong>data retention period</strong> (default: 30 days)</li>
+            <li>Cap <strong>max entries per service</strong> (default: 500)</li>
+            <li>Set a <strong>disk-usage warning threshold</strong> (default: 80%)</li>
+          </ul>
+        </div>
+
+        <div style="margin-top: 24px; padding: 16px; background: color-mix(in srgb, var(--ok-fg) 10%, transparent); border-radius: 8px; border: 1px solid var(--ok-fg);">
+          <strong style="color: var(--ok-fg);">✓ You can change these settings later</strong>
+          <div style="font-size: 0.85rem; margin-top: 4px; color: var(--muted);">
+            Go to Settings → System Configuration to edit your setup anytime
+          </div>
+        </div>
+
+        <div class="setup-wizard-buttons">
+          <button id="setup-disk-safety-back">← Back</button>
+          <button id="setup-disk-safety-finish" class="setup-btn-primary" style="background: var(--ok-bg); border-color: var(--ok-fg); color: var(--ok-fg);">✓ Finish Setup</button>
         </div>
       </div>
     </div>

status/js/health-check.js

@@ -38,7 +38,7 @@
         <div id="health-global-settings" style="margin-top: 16px; padding: 16px; border: 1px solid var(--border); border-radius: var(--radius); background: var(--card-base);">
           <h4 style="margin: 0 0 4px;">🌍 Global Settings</h4>
           <p class="text-muted-sm" style="margin: 0 0 12px;">Applies to all health checks. Settings are stored locally in this browser.</p>
-          <div style="display: grid; grid-template-columns: 1fr 1fr 1fr; gap: 12px;">
+          <div style="display: grid; grid-template-columns: 1fr 1fr; gap: 12px;">
             <div>
               <label class="text-muted-sm">Data Retention (days)</label>
               <input type="number" id="health-setting-retention" value="30" min="1" max="3650" class="form-input" />
@@ -49,6 +49,11 @@
               <input type="number" id="health-setting-interval" value="30" min="5" max="3600" class="form-input" />
               <div style="font-size: 0.72rem; color: var(--muted); margin-top: 2px;">How often each service is checked.</div>
             </div>
+            <div>
+              <label class="text-muted-sm">Max Entries Per Service</label>
+              <input type="number" id="health-setting-max-entries" value="500" min="10" max="100000" class="form-input" />
+              <div style="font-size: 0.72rem; color: var(--muted); margin-top: 2px;">Cap on stored history records per service.</div>
+            </div>
             <div>
               <label class="text-muted-sm">Disk-Usage Warning (%)</label>
               <input type="number" id="health-setting-disk-threshold" value="80" min="50" max="99" class="form-input" />
@@ -133,12 +138,13 @@
 
   // ---- Global health settings (retention, polling interval, disk threshold) ----
   const HEALTH_SETTINGS_KEY = 'dashcaddy-health-settings';
-  const HEALTH_DEFAULTS = { retentionDays: 30, pollingInterval: 30, diskUsageThreshold: 80 };
+  const HEALTH_DEFAULTS = { retentionDays: 30, pollingInterval: 30, maxEntriesPerService: 500, diskUsageThreshold: 80 };
   const globalSaveBtn = document.getElementById('health-global-save');
   const globalResetBtn = document.getElementById('health-global-reset');
   const globalStatusSpan = document.getElementById('health-global-status');
   const retentionInput = document.getElementById('health-setting-retention');
   const intervalInput = document.getElementById('health-setting-interval');
+  const maxEntriesInput = document.getElementById('health-setting-max-entries');
   const diskThresholdInput = document.getElementById('health-setting-disk-threshold');
 
   function loadHealthSettings() {
@@ -155,6 +161,7 @@
     const s = loadHealthSettings();
     if (retentionInput) retentionInput.value = s.retentionDays;
     if (intervalInput) intervalInput.value = s.pollingInterval;
+    if (maxEntriesInput) maxEntriesInput.value = s.maxEntriesPerService;
     if (diskThresholdInput) diskThresholdInput.value = s.diskUsageThreshold;
   }
 
@@ -162,6 +169,7 @@
     const settings = {
       retentionDays: Math.max(1, Math.min(3650, parseInt(retentionInput?.value) || HEALTH_DEFAULTS.retentionDays)),
       pollingInterval: Math.max(5, Math.min(3600, parseInt(intervalInput?.value) || HEALTH_DEFAULTS.pollingInterval)),
+      maxEntriesPerService: Math.max(10, Math.min(100000, parseInt(maxEntriesInput?.value) || HEALTH_DEFAULTS.maxEntriesPerService)),
       diskUsageThreshold: Math.max(50, Math.min(99, parseInt(diskThresholdInput?.value) || HEALTH_DEFAULTS.diskUsageThreshold))
     };
     try {

status/js/setup-wizard.js

@@ -135,22 +135,6 @@ window.populateTimezoneSelect = function(selectEl, selectedTz) {
       </div>
     `;
 
-    // Disk-safety reminder (universal across all config types)
-    html += `
-      <div style="margin-top: 12px; padding: 12px 14px; border-radius: 8px; border: 1px solid var(--warn-fg, #f39c12); background: color-mix(in srgb, var(--warn-fg, #f39c12) 8%, transparent);">
-        <div style="display: flex; gap: 8px; align-items: flex-start;">
-          <span style="font-size: 1.1rem;">💾</span>
-          <div style="font-size: 0.85rem; line-height: 1.45;">
-            <strong style="color: var(--warn-fg, #f39c12);">Disk-space tip:</strong>
-            Health-check monitoring records uptime, response-time, and incident data continuously.
-            By default DashCaddy keeps <strong>30 days</strong> of history and warns at <strong>80% disk usage</strong>.
-            You can tune the retention period, polling interval, and disk threshold later under
-            <strong>Health → Configure → Global Settings</strong>.
-          </div>
-        </div>
-      </div>
-    `;
-
     html += '</div>';
     summaryContent.innerHTML = html;
     showStep('setup-step-summary');
@@ -393,8 +377,26 @@ window.populateTimezoneSelect = function(selectEl, selectedTz) {
     };
   }
 
-  // Finish setup button
+  // Summary "Continue →" — advance to the disk-safety warning step
-  const finishBtn = document.getElementById('setup-finish');
+  const summaryNext = document.getElementById('setup-summary-next');
+  if (summaryNext) {
+    summaryNext.onclick = function(e) {
+      e.preventDefault();
+      showStep('setup-step-disk-safety');
+    };
+  }
+
+  // Disk-safety step navigation
+  const diskSafetyBack = document.getElementById('setup-disk-safety-back');
+  if (diskSafetyBack) {
+    diskSafetyBack.onclick = function(e) {
+      e.preventDefault();
+      showStep('setup-step-summary');
+    };
+  }
+
+  // Finish setup button (now on the disk-safety step)
+  const finishBtn = document.getElementById('setup-disk-safety-finish');
   if (finishBtn) {
     finishBtn.onclick = function(e) {
       e.preventDefault();