diff --git a/CHANGELOG.md b/CHANGELOG.md
index 13ee4a5..6079391 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -4,6 +4,23 @@ All notable changes to ClaudePortable are documented here. Format follows
 [Keep a Changelog](https://keepachangelog.com/en/1.1.0/) and the project
 adheres to [Semantic Versioning](https://semver.org/spec/v2.0.0.html).
 
+## [Unreleased]
+
+### Fixed
+
+- **Discovery no longer shows a permanently-empty `coworkSessions` row.**
+  The `%USERPROFILE%\.cowork` candidate was an unverified Spec 1.1 guess that
+  does not exist on the Store-app Claude Desktop, so its read-only EXISTS box
+  always rendered unchecked and looked like a broken toggle. Removed the
+  vestigial entry from `WindowsPathDiscovery` and its `cowork/sessions`
+  archive-prefix mapping. Cowork data is unaffected: session state under
+  `%APPDATA%\Claude\local-agent-mode-sessions` is already covered by the
+  Claude Desktop AppData path, and project folders are captured by
+  `CoworkProjectDiscovery` under `cowork-projects/<hash>`. The Discovery
+  caption now explains that EXISTS is a status indicator, not a toggle. The
+  restore-side legacy mapping for `cowork/sessions` is retained so older ZIPs
+  still restore correctly.
+
 ## [0.3.0] - 2026-05-29
 
 ### Added
diff --git a/src/ClaudePortable.App/Ui/Views/MainWindow.xaml b/src/ClaudePortable.App/Ui/Views/MainWindow.xaml
index 63060c6..eb1d66f 100644
--- a/src/ClaudePortable.App/Ui/Views/MainWindow.xaml
+++ b/src/ClaudePortable.App/Ui/Views/MainWindow.xaml
@@ -224,7 +224,7 @@
                     </Grid.RowDefinitions>
 
                     <TextBlock Style="{DynamicResource H1}" Text="Discovery" />
-                    <TextBlock Style="{DynamicResource Caption}" Text="What ClaudePortable found on this machine. Paths that do not exist are skipped during backup." Margin="0,0,0,20" Grid.Row="1" TextWrapping="Wrap" />
+                    <TextBlock Style="{DynamicResource Caption}" Margin="0,0,0,20" Grid.Row="1" TextWrapping="Wrap">What ClaudePortable found on this machine. The EXISTS column is a read-only status indicator, not a toggle - paths that do not exist are skipped during backup. Cowork is not listed as its own row: session state lives under <Run FontFamily="{DynamicResource MonoFont}">AppData\Roaming\Claude\local-agent-mode-sessions</Run> (already covered by the Claude Desktop AppData row), and the project folders you opened in Cowork are auto-discovered and backed up separately.</TextBlock>
 
                     <TextBlock Style="{DynamicResource H2}" Text="Claude paths" Grid.Row="2" Margin="0,0,0,8" />
                     <Border Style="{DynamicResource Card}" Padding="0" Grid.Row="3">
diff --git a/src/ClaudePortable.Core/Backup/BackupEngine.cs b/src/ClaudePortable.Core/Backup/BackupEngine.cs
index ed659a9..b697187 100644
--- a/src/ClaudePortable.Core/Backup/BackupEngine.cs
+++ b/src/ClaudePortable.Core/Backup/BackupEngine.cs
@@ -173,7 +173,6 @@ private static string BuildFilename(DateTimeOffset timestamp, RetentionTier tier
         "claudeDesktopAppData" => "claude-desktop/appdata",
         "claudeDesktopLocalAppData" => "claude-desktop/localappdata",
         "claudeCodeUserProfile" => "claude-code/dotclaude",
-        "coworkSessions" => "cowork/sessions",
         _ => key,
     };
 
diff --git a/src/ClaudePortable.Core/Discovery/WindowsPathDiscovery.cs b/src/ClaudePortable.Core/Discovery/WindowsPathDiscovery.cs
index 2b8e28c..9d3eb5b 100644
--- a/src/ClaudePortable.Core/Discovery/WindowsPathDiscovery.cs
+++ b/src/ClaudePortable.Core/Discovery/WindowsPathDiscovery.cs
@@ -29,11 +29,18 @@ private static readonly (string Key, string[] Candidates, string Source)[] Known
             new[] { @"%USERPROFILE%\.claude" },
             "Spec 1.1 + verified 2026-04-22"
         ),
-        (
-            "coworkSessions",
-            new[] { @"%USERPROFILE%\.cowork" },
-            "Spec 1.1 (assumed, ProcMon pending)"
-        ),
+        // NOTE: there is intentionally no "coworkSessions" entry here.
+        // The original Spec 1.1 guess of %USERPROFILE%\.cowork was never
+        // verified and does not exist on the Store-app Claude Desktop.
+        // Phase-0 verification (docs/discovered-paths.md, 2026-04-23)
+        // established that Cowork session state actually lives under
+        // %APPDATA%\Claude\local-agent-mode-sessions\<guid>\..., which is a
+        // subfolder of "claudeDesktopAppData" above and is therefore already
+        // backed up. The user-selected project roots referenced by those
+        // sessions are captured separately by CoworkProjectDiscovery under
+        // the "cowork-projects/<hash>" archive prefix. A standalone .cowork
+        // row would only ever show EXISTS = false and would duplicate the
+        // local-agent-mode-sessions subtree in the ZIP if repointed.
         (
             "claudeDesktopLocalAppData",
             new[]