diff --git a/src/Client/CanvasPane.fs b/src/Client/CanvasPane.fs
index eaf4aa3..f818cc0 100644
--- a/src/Client/CanvasPane.fs
+++ b/src/Client/CanvasPane.fs
@@ -330,6 +330,7 @@ let view (isOpen: bool) (position: CanvasPosition) (focusedDoc: (WorktreeStatus
                         prop.className (if isActive then "canvas-iframe canvas-iframe-active" else "canvas-iframe")
                         prop.src (iframeSrc wt d)
                         prop.custom ("sandbox", "allow-scripts allow-same-origin allow-forms allow-popups")
+                        prop.custom ("allow", "clipboard-write")
                         prop.style [
                             if not isActive then style.display.none
                         ]
diff --git a/src/Server/BeadspaceTemplate.html b/src/Server/BeadspaceTemplate.html
index 0038a4d..9b85fb5 100644
--- a/src/Server/BeadspaceTemplate.html
+++ b/src/Server/BeadspaceTemplate.html
@@ -183,8 +183,36 @@
     font-size: 0.6875rem;
     color: var(--text-muted);
     white-space: nowrap;
+    display: flex;
+    align-items: center;
+    gap: 0.25rem;
 }
 
+.copy-id-btn {
+    display: inline-flex;
+    align-items: center;
+    justify-content: center;
+    width: 1.25rem;
+    height: 1.25rem;
+    padding: 0;
+    background: transparent;
+    border: none;
+    border-radius: 4px;
+    color: var(--text-muted);
+    cursor: pointer;
+    opacity: 0;
+    flex-shrink: 0;
+    transition: opacity 0.12s ease, color 0.12s ease, background 0.12s ease;
+}
+.issues-table tr.issue-table-row:hover .copy-id-btn { opacity: 1; }
+.copy-id-btn:hover { color: var(--text-primary); background: var(--bg-elevated); }
+.copy-id-btn:focus-visible { opacity: 1; outline: 1px solid var(--accent); outline-offset: 1px; }
+.copy-id-btn svg { width: 0.875rem; height: 0.875rem; display: block; }
+.copy-id-btn .check-icon { display: none; }
+.copy-id-btn.copied { color: var(--status-closed); opacity: 1; }
+.copy-id-btn.copied .copy-icon { display: none; }
+.copy-id-btn.copied .check-icon { display: block; }
+
 .issues-table .col-title {
     font-weight: 500;
     max-width: 400px;
@@ -407,6 +435,8 @@
         margin-bottom: 0.125rem;
     }
 
+    .copy-id-btn { opacity: 1; }
+
     .issues-table .col-title {
         white-space: normal;
         max-width: none;
@@ -439,6 +469,32 @@
     return el.innerHTML;
 }
 
+function copyTextToClipboard(text) {
+    var safe = String(text).replace(/[\u0000-\u001F\u007F]/g, '');
+    return navigator.clipboard.writeText(safe);
+}
+
+var COPY_ICON_SVG = '<svg class="copy-icon" viewBox="0 0 24 24" fill="none" stroke="currentColor" stroke-width="2" stroke-linecap="round" stroke-linejoin="round" aria-hidden="true"><rect x="9" y="9" width="13" height="13" rx="2" ry="2"></rect><path d="M5 15H4a2 2 0 0 1-2-2V4a2 2 0 0 1 2-2h9a2 2 0 0 1 2 2v1"></path></svg>';
+var CHECK_ICON_SVG = '<svg class="check-icon" viewBox="0 0 24 24" fill="none" stroke="currentColor" stroke-width="2" stroke-linecap="round" stroke-linejoin="round" aria-hidden="true"><polyline points="20 6 9 17 4 12"></polyline></svg>';
+
+function createCopyIdButton(id) {
+    var btn = document.createElement('button');
+    btn.type = 'button';
+    btn.className = 'copy-id-btn';
+    btn.title = 'Copy ID';
+    btn.setAttribute('aria-label', 'Copy issue ID');
+    btn.innerHTML = COPY_ICON_SVG + CHECK_ICON_SVG;
+    btn.addEventListener('click', function(e) {
+        e.stopPropagation();
+        copyTextToClipboard(id).then(function() {
+            btn.classList.add('copied');
+            btn.title = 'Copied!';
+            setTimeout(function() { btn.classList.remove('copied'); btn.title = 'Copy ID'; }, 1200);
+        });
+    });
+    return btn;
+}
+
 function daysAgo(dateStr) {
     if (!dateStr) return 0;
     var diff = Date.now() - new Date(dateStr).getTime();
@@ -628,7 +684,11 @@
 
         var tdId = document.createElement('td');
         tdId.className = 'col-id';
-        tdId.textContent = i.id;
+        var idText = document.createElement('span');
+        idText.className = 'id-text';
+        idText.textContent = i.id;
+        tdId.appendChild(idText);
+        tdId.appendChild(createCopyIdButton(i.id));
         tr.appendChild(tdId);
 
         var tdPri = document.createElement('td');
diff --git a/src/Tests/BeadspaceCanvasTests.fs b/src/Tests/BeadspaceCanvasTests.fs
index 5686256..49d4783 100644
--- a/src/Tests/BeadspaceCanvasTests.fs
+++ b/src/Tests/BeadspaceCanvasTests.fs
@@ -307,3 +307,57 @@ type BeadspaceCanvasTests() =
             let! tableCount = this.Page.Locator(".issues-table").CountAsync()
             Assert.That(tableCount, Is.EqualTo(1), "Issues table should still be rendered after refresh")
         }
+
+    // ── Copy ID Button ───────────────────────────────────────────────────
+
+    [<Test>]
+    member this.``Each issue row has a copy-ID button``() =
+        task {
+            let allChip = this.Page.Locator(".filter-chip", PageLocatorOptions(HasText = "All"))
+            do! allChip.ClickAsync()
+            let! rowCount = this.Page.Locator(".issue-table-row").CountAsync()
+            let! btnCount = this.Page.Locator(".issue-table-row .copy-id-btn").CountAsync()
+            Assert.That(rowCount, Is.GreaterThan(0), "There should be issue rows to test")
+            Assert.That(btnCount, Is.EqualTo(rowCount), "Every issue row should have exactly one copy-ID button")
+        }
+
+    [<Test>]
+    member this.``Clicking copy button copies ID without expanding detail panel``() =
+        task {
+            do! this.Context.GrantPermissionsAsync([| "clipboard-read"; "clipboard-write" |])
+
+            let allChip = this.Page.Locator(".filter-chip", PageLocatorOptions(HasText = "All"))
+            do! allChip.ClickAsync()
+
+            let firstRow = this.Page.Locator(".issue-table-row").First
+            let! expectedId = firstRow.GetAttributeAsync("data-issue-id")
+
+            let copyBtn = firstRow.Locator(".copy-id-btn")
+            do! copyBtn.ClickAsync()
+
+            // Detail panel must NOT expand — the button stops propagation
+            let! expandedCount = this.Page.Locator(".detail-panel.expanded").CountAsync()
+            Assert.That(expandedCount, Is.EqualTo(0), "Clicking the copy button should not expand the detail panel")
+
+            // Web-first assertion: auto-retries and passes on first match, so the page's
+            // 1200ms timer clearing the .copied class can't fail an already-satisfied check.
+            let copiedBtn = firstRow.Locator(".copy-id-btn.copied")
+            do! Assertions.Expect(copiedBtn).ToBeVisibleAsync(LocatorAssertionsToBeVisibleOptions(Timeout = 3000.0f))
+
+            // Best-effort: clipboard content matches the row id
+            let! clip = this.Page.EvaluateAsync<string>("() => navigator.clipboard.readText()")
+            Assert.That(clip, Is.EqualTo(expectedId), "Clipboard should contain the copied issue ID")
+        }
+
+    [<Test>]
+    member this.``Clicking row body still expands detail panel``() =
+        task {
+            let allChip = this.Page.Locator(".filter-chip", PageLocatorOptions(HasText = "All"))
+            do! allChip.ClickAsync()
+            let firstRow = this.Page.Locator(".issue-table-row").First
+            do! firstRow.Locator(".col-title").ClickAsync()
+            let detailPanel = this.Page.Locator(".detail-panel.expanded")
+            do! detailPanel.WaitForAsync(LocatorWaitForOptions(Timeout = 5000.0f))
+            let! count = detailPanel.CountAsync()
+            Assert.That(count, Is.EqualTo(1), "Clicking the row body should still expand the detail panel")
+        }