diff --git a/README.md b/README.md
index 314e2bd..7f1d360 100644
--- a/README.md
+++ b/README.md
@@ -13,7 +13,7 @@ beyond PowerShell.
 > simulated 200-device fleet. Open the **Terminals** panel at the bottom of the page to watch
 > them work.
 
-![USMT Status page](docs/screenshots/usmt-status.png)
+![Overview page](docs/screenshots/overview.png)
 
 ## Why it exists
 
@@ -28,6 +28,11 @@ a 1,300-device scope.
 
 ## Features
 
+- **Overview**: the landing page, built to drive a refresh's open issues to zero. Counters for
+  offline sources, not started, *Bad Client* and *Broken WMI* tags, devices missing from AD /
+  SCCM / DNS, low disk, backup errors and undocumented apps; overall progress; devices per
+  Backup Status; a building x floor map of what's left; and a calendar of the deployment-date
+  tags showing how far each day's devices have got. Every number opens the devices behind it.
 - **Tracked Devices**: technicians register devices under tags (a name, a date batch, a
   department). The worker only sweeps tagged devices. Tags can be flagged *Skip USMT* for
   inventory-only tracking, and `SOURCE, DEST` lines create manual pairs for hardware exceptions.
@@ -43,21 +48,35 @@ a 1,300-device scope.
 - **Missing software**: compares installed software on source and destination, filters out the
   baseline image using a pattern list, groups multi-part products into suites, and lists the
   specialty apps not yet on the new device.
-- **Device details**: AD OU and groups, hardware, disk, RAM, client health, location,
-  department, users. Shown for both sides of a migration.
-- **Custom View**: build your own table from any field, with drag-to-reorder, resizable and
+- **Device details**: AD OU and groups, hardware, disk, RAM, monitors, client health,
+  location, department, users, for both sides of a migration. A blank says why: *Not in AD*,
+  *Not in SCCM*, *No DNS record*, or *Waiting for worker...* if it hasn't been looked up yet.
+  The dialog refreshes in place when the worker finishes a cycle.
+- **Presence**: every tracked device (completed pairs and destinations included) is pinged
+  hourly during business hours and at midnight, so each one shows when it was last online and
+  how many days it has been offline.
+- **Snapshots**: the last free space and scanstate / loadstate lines seen while a device was
+  reachable are kept with their timestamps, and shown for completed migrations and offline
+  devices instead of blanks.
+- **Custom View**: build your own table from any field (including days offline, last online,
+  found in AD/SCCM/DNS and monitors), with drag-to-reorder, resizable and Excel-style
   filterable columns. Saved per browser.
 - **Workbench**: personal "stacks" of devices for the cart in front of you.
-- **Knowledge base**: Markdown articles with an editor, image manager, PDF export, badges and
-  click-to-copy links. Renaming an image rewrites every article that links to it. Articles
-  named after an app are linked from that app in the software view.
+- **Knowledge base**: Markdown articles with an editor, image manager, badges, alerts and
+  click-to-copy links. Each article has its own address (`/docs/Adobe Acrobat Pro`); the list
+  is searchable, counted and split into *Applications* and *Troubleshooting & Guides*; PDF
+  export and print. Renaming an image rewrites every article that links to it. Articles named
+  after an app are linked from that app in the software view.
 - **Business-hours scheduling**: the worker cycles every few minutes during working hours,
   sleeps overnight, and makes a midnight "pitstop" for the daily software refresh.
-  *Force Update* and *Force Full Refresh* skip the wait.
+  *Force Update* and *Force Full Refresh* skip the wait. Newly tracked devices are swept and
+  published first; the sync dialog shows how long each kind of device (SCCM association,
+  manual pair, completed snapshot...) took.
 
 | | |
 |---|---|
-| ![Terminals](docs/screenshots/terminals.png) | ![Missing software](docs/screenshots/missing-software.png) |
+| ![USMT Status](docs/screenshots/usmt-status.png) | ![Terminals](docs/screenshots/terminals.png) |
+| ![Missing software](docs/screenshots/missing-software.png) | ![Custom View](docs/screenshots/custom-view.png) |
 | ![Device details](docs/screenshots/device-details.png) | ![Documentation](docs/screenshots/documentation.png) |
 
 ## Architecture
@@ -78,12 +97,16 @@ refresh" buttons drop flag files that the worker watches for.
 | `Config\usmt-dash.psd1` | Every environment-specific setting |
 | `web\index.html` | The dashboard (single-file HTML/JS, about 4,500 lines) |
 | `web\demo\demo.js` | Terminal panel, plus the demo-mode browser sandbox |
+| `web\overview.js` | Overview page (issue counters, progress, locations, deployment calendar) |
+| `web\device-info.js` | Shared device helpers: missing-data reasons, presence, snapshot markers |
+| `web\docs.js` | Knowledge base: permalinks, search, categories, PDF / print |
 
 ### API
 
 | Method & path | Purpose |
 |---|---|
 | `GET /` and static files | Dashboard, assets, `Data\` state files, `Documentation\` |
+| `GET /docs/<title>` | The dashboard, opened on that knowledge-base article |
 | `GET /get-config` | Mode flags for the front end |
 | `GET /get-logs?source=server\|worker&after=<id>` | Tail of the service console output (terminal panel) |
 | `POST /force-update` · `POST /force-full` | Wake the worker now (full = also refresh software/inventory caches) |
@@ -172,8 +195,9 @@ different CMDB, PDQ, ...), add `Providers\<Name>.ps1`, implement these functions
 | `Get-DiskSpace <name>` | `@{ Total = '238 GB'; Free = '80 GB' }` |
 | `Get-LogInfo <name> <logName>` | Latest USMT progress log line (via the shared parser) |
 | `Get-DeviceAssociations <name>` | Objects with `SourceComputer`, `DestinationComputer`, `MigrationStatus` (0/1/2) |
-| `Get-DeviceInventory <name> <session>` | Hashtable of detail fields (OU, Groups, Model, RAM, Location, ...) |
+| `Get-DeviceInventory <name> <session>` | Hashtable of detail fields (OU, Groups, Model, RAM, MonitorCount, Monitors, Location, ...), plus `InAD` / `InSCCM` (`$true` / `$false`) |
 | `Get-InstalledSoftware <name>` | Rows of `Name`, `Version`, `Publisher`, `Source`, `InstallDate` |
+| `Get-DeviceLastSeen <name> <session>` *(optional)* | When the device was last active, used to backfill "last online" the first time it's tracked |
 
 `Providers\Demo.ps1` is a complete working example that needs no infrastructure.
 
diff --git a/docs/screenshots/custom-view.png b/docs/screenshots/custom-view.png
new file mode 100644
index 0000000..b5a9358
Binary files /dev/null and b/docs/screenshots/custom-view.png differ
diff --git a/docs/screenshots/overview.png b/docs/screenshots/overview.png
new file mode 100644
index 0000000..ef16d8a
Binary files /dev/null and b/docs/screenshots/overview.png differ
diff --git a/web/device-info.js b/web/device-info.js
index ce1337d..bdc9ef3 100644
--- a/web/device-info.js
+++ b/web/device-info.js
@@ -125,7 +125,7 @@
             const d = daysOffline(name);
             if (d === undefined) return { text: WAITING, state: 'waiting' };
             if (d === null) return { text: 'Never seen', state: 'value' };
-            if (d === 0) return { text: presence(name).online ? 'Online' : '0 days', state: 'value' };
+            if (d === 0) return { text: presence(name).online ? 'Online' : '< 1 day', state: 'value' };
             return { text: d + (d === 1 ? ' day' : ' days'), state: 'value' };
         }
         if (key === 'LastOnline') {
diff --git a/web/docs.js b/web/docs.js
index f1c2646..fadab83 100644
--- a/web/docs.js
+++ b/web/docs.js
@@ -385,7 +385,14 @@
                 }
             }
         });
-        wrap('openDoc', () => { renderSidebar(); decorate(); }, name => { setUrl(permalink(name), true); });
+        wrap('openDoc', () => {
+            renderSidebar(); decorate();
+            // Phones and tablets stack the list above the article: bring the article into view
+            if (window.matchMedia('(max-width: 1100px)').matches) {
+                const bar = document.getElementById('docToolbar');
+                if (bar) window.scrollTo({ top: window.scrollY + bar.getBoundingClientRect().top - (parseFloat(getComputedStyle(document.documentElement).getPropertyValue('--nav-h')) || 60) - 10, behavior: 'smooth' });
+            }
+        }, name => { setUrl(permalink(name), true); });
         wrap('formatCodeBlocks', decorate);
         wrap('setDocMode', mode => {
             const sel = document.getElementById('docCategory');
diff --git a/web/index.html b/web/index.html
index b5d4832..3035691 100755
--- a/web/index.html
+++ b/web/index.html
@@ -3451,8 +3451,9 @@
         function getCustomCellValue(row, col) {
             const blank = v => (v === undefined || v === null || v === "") ? "N/A" : v;
             if (col.kind === "apiKey") return blank(row[col.key]);
-            if (col.kind === "adv")    return DeviceInfo.field(row["Source Device"], col.key).text;
-            if (col.kind === "advDst") return DeviceInfo.field(row["Destination Device"], col.key).text;
+            // multi-line inventory values (groups, monitors, disk) read as a comma list in a cell
+            if (col.kind === "adv")    return DeviceInfo.field(row["Source Device"], col.key).text.replace(/<br\s*\/?>/gi, ", ");
+            if (col.kind === "advDst") return DeviceInfo.field(row["Destination Device"], col.key).text.replace(/<br\s*\/?>/gi, ", ");
             if (col.kind === "special") return getCustomSpecialty(row["Source Device"]);
             if (col.kind === "migration") {
                 if (col.fn === "space") return (row["Source Free Space"] && row["Source Free Space"] !== "N/A") ? row["Source Free Space"] + " / " + row["Source Total Space"] : "N/A";
@@ -4315,7 +4316,7 @@
                 const forceBtn = document.getElementById('forceSyncBtn');
                 const forceFullBtn = document.getElementById('forceFullBtn');
                 
-                btn.innerText = `Data Updated At: ${globalDataLastUpdated}`;
+                btn.innerHTML = `<span class="st-pre">Data Updated At: </span>${globalDataLastUpdated}`;
                 
                 if (state.Status === "Cooldown") {
                     document.getElementById('syncStatusText').innerText = "System is Idle (On Cooldown)";
@@ -4376,7 +4377,7 @@
                     if (payload.LastUpdated && payload.Devices) {
                         apiData = payload.Devices;
                         globalDataLastUpdated = payload.LastUpdated;
-                        btn.innerText = `Data Updated At: ${globalDataLastUpdated}`;
+                        btn.innerHTML = `<span class="st-pre">Data Updated At: </span>${globalDataLastUpdated}`;
                     } else {
                         apiData = payload; 
                     }
diff --git a/web/layout.css b/web/layout.css
index f48b772..b7c4cba 100644
--- a/web/layout.css
+++ b/web/layout.css
@@ -449,3 +449,24 @@ table.sync-bd th { color: var(--text-muted); font-weight: 600; }
 table.sync-bd tbody tr { cursor: help; }
 .sync-bd-phases { margin-top: 6px; color: var(--text-muted); line-height: 1.4; }
 #syncModal .modal-content { max-width: 460px !important; }
+
+/* Desktop nav between the hamburger breakpoint and wide screens: tighten so the links,
+   DEMO pill, theme toggle and sync status all fit on one line */
+@media (min-width: 1101px) and (max-width: 1600px) {
+    .top-nav .nav-btn { padding: 8px 7px; font-size: 0.9em; }
+    .top-nav h2 { margin-right: 8px; font-size: 1.25em; }
+    .status-btn { padding: 8px 10px; }
+}
+@media (min-width: 1101px) and (max-width: 1450px) {
+    .st-pre { display: none; }
+    .status-btn::before { content: 'Updated '; color: rgba(255,255,255,0.65); }
+}
+@media (min-width: 1101px) and (max-width: 1250px) {
+    .status-btn::before { content: none; }
+    .top-nav .nav-btn { padding: 8px 5px; font-size: 0.86em; }
+    .nav-logo { margin-right: 6px; }
+}
+@media (min-width: 1101px) and (max-width: 1180px) {
+    .nav-logo { display: none; }
+    .top-nav .nav-btn { padding: 8px 4px; }
+}