fix(canvas): add focus-visible rings to final 5 component files

- A2AEdge.tsx: edge label pill button
- OrgCancelButton.tsx: cancel trigger + confirm Yes/No
- AttachmentTextPreview.tsx: download, show-all, truncated-dl buttons
- form-inputs.tsx: tag remove (red) + section toggle (accent)
- secrets-section.tsx: SecretRow/CustomSecretRow remove (red), update,
  save, scope toggle (amber for global), add-variable buttons
- settings-panel.css: UnsavedChangesGuard keep/discard buttons

Co-Authored-By: Claude Opus 4.7 <noreply@anthropic.com>

canvas/src/components/canvas/A2AEdge.tsx

@@ -119,7 +119,7 @@ function A2AEdgeImpl({
               onClick={handleClick}
               aria-label={ariaLabel}
               title="Open source workspace's activity feed"
-              className={`px-2 py-0.5 rounded-full bg-surface-sunken/95 border ${accent} ${accentText} text-[10px] font-medium shadow-md shadow-black/40 backdrop-blur-sm hover:bg-surface-card hover:border-opacity-100 transition-colors cursor-pointer`}
+              className={`px-2 py-0.5 rounded-full bg-surface-sunken/95 border ${accent} ${accentText} text-[10px] font-medium shadow-md shadow-black/40 backdrop-blur-sm hover:bg-surface-card hover:border-opacity-100 transition-colors cursor-pointer focus-visible:outline-none focus-visible:ring-2 focus-visible:ring-accent focus-visible:ring-offset-1`}
             >
               {labelText}
             </button>

canvas/src/components/canvas/OrgCancelButton.tsx

@@ -122,7 +122,7 @@ export function OrgCancelButton({ rootId, rootName, workspaceCount }: Props) {
           type="button"
           onClick={handleCancel}
           disabled={submitting}
-          className="mol-deploy-cancel px-2 py-0.5 rounded text-[10px] font-semibold"
+          className="mol-deploy-cancel px-2 py-0.5 rounded text-[10px] font-semibold focus-visible:outline-none focus-visible:ring-2 focus-visible:ring-red-500 focus-visible:ring-offset-1"
         >
           {submitting ? "Deleting…" : "Yes"}
         </button>
@@ -130,7 +130,7 @@ export function OrgCancelButton({ rootId, rootName, workspaceCount }: Props) {
           type="button"
           onClick={() => setConfirming(false)}
           disabled={submitting}
-          className="px-2 py-0.5 rounded bg-surface-card/80 hover:bg-surface-card text-[10px] text-ink"
+          className="px-2 py-0.5 rounded bg-surface-card/80 hover:bg-surface-card text-[10px] text-ink focus-visible:outline-none focus-visible:ring-2 focus-visible:ring-accent focus-visible:ring-offset-1"
         >
           No
         </button>
@@ -148,7 +148,7 @@ export function OrgCancelButton({ rootId, rootName, workspaceCount }: Props) {
         e.stopPropagation();
         setConfirming(true);
       }}
-      className="nodrag mol-deploy-cancel mol-deploy-cancel-pulse absolute -top-7 right-1 z-20 flex items-center gap-1 rounded-full px-2.5 py-0.5 text-[10px] font-semibold shadow-md"
+      className="nodrag mol-deploy-cancel mol-deploy-cancel-pulse absolute -top-7 right-1 z-20 flex items-center gap-1 rounded-full px-2.5 py-0.5 text-[10px] font-semibold shadow-md focus-visible:outline-none focus-visible:ring-2 focus-visible:ring-red-500 focus-visible:ring-offset-1"
       aria-label={`Cancel deployment of ${rootName}`}
     >
       <svg width="10" height="10" viewBox="0 0 16 16" aria-hidden="true">

canvas/src/components/tabs/chat/AttachmentTextPreview.tsx

@@ -148,7 +148,7 @@ export function AttachmentTextPreview({ workspaceId, attachment, onDownload, ton
         <button
           type="button"
           onClick={() => onDownload(attachment)}
-          className="text-ink-mid hover:text-ink"
+          className="text-ink-mid hover:text-ink focus-visible:outline-none focus-visible:ring-2 focus-visible:ring-accent focus-visible:ring-offset-1"
           title={`Download ${attachment.name}`}
           aria-label={`Download ${attachment.name}`}
         >
@@ -162,7 +162,7 @@ export function AttachmentTextPreview({ workspaceId, attachment, onDownload, ton
         <button
           type="button"
           onClick={() => setExpanded(true)}
-          className="block w-full text-center text-[10px] text-ink-mid hover:text-ink py-1 border-t border-line/40"
+          className="block w-full text-center text-[10px] text-ink-mid hover:text-ink py-1 border-t border-line/40 focus-visible:outline-none focus-visible:ring-2 focus-visible:ring-accent focus-visible:ring-offset-1"
         >
           Show all {lines.length} lines
         </button>
@@ -173,7 +173,7 @@ export function AttachmentTextPreview({ workspaceId, attachment, onDownload, ton
           <button
             type="button"
             onClick={() => onDownload(attachment)}
-            className="underline"
+            className="underline focus-visible:outline-none focus-visible:ring-2 focus-visible:ring-accent focus-visible:ring-offset-1"
           >
             download full file
           </button>

canvas/src/components/tabs/config/form-inputs.tsx

@@ -102,7 +102,7 @@ export function TagList({ label, values, onChange, placeholder }: { label: strin
         {values.map((v, i) => (
           <span key={i} className="inline-flex items-center gap-1 px-1.5 py-0.5 bg-surface-card border border-line rounded text-[10px] text-ink-mid font-mono">
             {v}
-            <button type="button" aria-label={`Remove tag ${v}`} onClick={() => onChange(values.filter((_, j) => j !== i))} className="text-ink-mid hover:text-bad">×</button>
+            <button type="button" aria-label={`Remove tag ${v}`} onClick={() => onChange(values.filter((_, j) => j !== i))} className="text-ink-mid hover:text-bad focus-visible:outline-none focus-visible:ring-2 focus-visible:ring-red-500 focus-visible:ring-offset-1">×</button>
           </span>
         ))}
       </div>
@@ -129,7 +129,7 @@ export function Section({ title, children, defaultOpen = true }: { title: string
   const [open, setOpen] = useState(defaultOpen);
   return (
     <div className="border border-line rounded mb-2">
-      <button type="button" onClick={() => setOpen(!open)} className="w-full flex items-center justify-between px-3 py-1.5 text-[10px] text-ink-mid hover:text-ink bg-surface-sunken/50">
+      <button type="button" onClick={() => setOpen(!open)} className="w-full flex items-center justify-between px-3 py-1.5 text-[10px] text-ink-mid hover:text-ink bg-surface-sunken/50 focus-visible:outline-none focus-visible:ring-2 focus-visible:ring-accent focus-visible:ring-offset-1">
         <span className="font-medium uppercase tracking-wider">{title}</span>
         <span>{open ? "▾" : "▸"}</span>
       </button>

canvas/src/components/tabs/config/secrets-section.tsx

@@ -113,9 +113,9 @@ function SecretRow({ label, secretKey, isSet, scope, globalMode, onSave, onDelet
           {isSet && <span className="text-[10px] text-good bg-green-900/30 px-1.5 py-0.5 rounded">Set</span>}
           {scope && <ScopeBadge scope={scope} />}
           {!editing && isSet && (globalMode || scope !== "global") && (
-            <button type="button" onClick={onDelete} className="text-[11px] text-bad hover:text-bad">Remove</button>
+            <button type="button" onClick={onDelete} className="text-[11px] text-bad hover:text-bad focus-visible:outline-none focus-visible:ring-2 focus-visible:ring-red-500 focus-visible:ring-offset-1">Remove</button>
           )}
-          <button type="button" onClick={() => setEditing(!editing)} className="text-[11px] text-accent hover:text-accent">
+          <button type="button" onClick={() => setEditing(!editing)} className="text-[11px] text-accent hover:text-accent focus-visible:outline-none focus-visible:ring-2 focus-visible:ring-accent focus-visible:ring-offset-1">
             {actionLabel()}
           </button>
         </div>
@@ -131,7 +131,7 @@ function SecretRow({ label, secretKey, isSet, scope, globalMode, onSave, onDelet
           <button type="button"
             onClick={() => { onSave(value); setEditing(false); setValue(""); }}
             disabled={!value}
-            className="px-2 py-1 bg-accent-strong hover:bg-accent text-[10px] rounded text-white disabled:opacity-30"
+            className="px-2 py-1 bg-accent-strong hover:bg-accent text-[10px] rounded text-white disabled:opacity-30 focus-visible:outline-none focus-visible:ring-2 focus-visible:ring-accent focus-visible:ring-offset-1"
           >Save</button>
         </div>
       )}
@@ -165,10 +165,10 @@ function CustomSecretRow({ secretKey, scope, globalMode, onSave, onDelete }: {
           <span className="text-[10px] text-good">Set</span>
           {!globalMode && <ScopeBadge scope={scope} />}
           {canDelete && !editing && (
-            <button type="button" onClick={onDelete} className="text-[11px] text-bad hover:text-bad">Remove</button>
+            <button type="button" onClick={onDelete} className="text-[11px] text-bad hover:text-bad focus-visible:outline-none focus-visible:ring-2 focus-visible:ring-red-500 focus-visible:ring-offset-1">Remove</button>
           )}
           {(canDelete || showOverride) && (
-            <button type="button" onClick={() => setEditing(!editing)} className="text-[11px] text-accent hover:text-accent">
+            <button type="button" onClick={() => setEditing(!editing)} className="text-[11px] text-accent hover:text-accent focus-visible:outline-none focus-visible:ring-2 focus-visible:ring-accent focus-visible:ring-offset-1">
               {editing ? "Cancel" : showOverride ? "Override" : "Update"}
             </button>
           )}
@@ -184,7 +184,7 @@ function CustomSecretRow({ secretKey, scope, globalMode, onSave, onDelete }: {
           <button type="button"
             onClick={() => { onSave(value); setEditing(false); setValue(""); }}
             disabled={!value}
-            className="px-2 py-1 bg-accent-strong hover:bg-accent text-[10px] rounded text-white disabled:opacity-30"
+            className="px-2 py-1 bg-accent-strong hover:bg-accent text-[10px] rounded text-white disabled:opacity-30 focus-visible:outline-none focus-visible:ring-2 focus-visible:ring-accent focus-visible:ring-offset-1"
           >Save</button>
         </div>
       )}
@@ -297,7 +297,7 @@ export function SecretsSection({ workspaceId, requiredEnv }: { workspaceId: stri
           <div className="flex items-center gap-2 pb-1">
             <button
               onClick={() => setGlobalMode(false)}
-              className={`text-[10px] px-2 py-0.5 rounded transition-colors ${
+              className={`text-[10px] px-2 py-0.5 rounded transition-colors focus-visible:outline-none focus-visible:ring-2 focus-visible:ring-accent focus-visible:ring-offset-1 ${
                 !globalMode ? "bg-accent-strong/20 text-accent border border-accent/30" : "text-white-soft hover:text-white-mid"
               }`}
             >
@@ -305,7 +305,7 @@ export function SecretsSection({ workspaceId, requiredEnv }: { workspaceId: stri
             </button>
             <button
               onClick={() => setGlobalMode(true)}
-              className={`text-[10px] px-2 py-0.5 rounded transition-colors ${
+              className={`text-[10px] px-2 py-0.5 rounded transition-colors focus-visible:outline-none focus-visible:ring-2 focus-visible:ring-amber-400 focus-visible:ring-offset-1 ${
                 globalMode ? "bg-amber-600/20 text-warm border border-amber-500/30" : "text-white-soft hover:text-white-mid"
               }`}
             >
@@ -356,15 +356,15 @@ export function SecretsSection({ workspaceId, requiredEnv }: { workspaceId: stri
                 className="w-full bg-surface-sunken border border-line rounded px-2 py-1 text-[10px] text-ink focus:outline-none focus:border-accent" />
               <div className="flex gap-2">
                 <button type="button" onClick={() => { if (newKey && newValue) handleSave(newKey, newValue); }} disabled={!newKey || !newValue}
-                  className="px-2 py-1 bg-accent-strong hover:bg-accent text-[10px] rounded text-white disabled:opacity-30">
+                  className="px-2 py-1 bg-accent-strong hover:bg-accent text-[10px] rounded text-white disabled:opacity-30 focus-visible:outline-none focus-visible:ring-2 focus-visible:ring-accent focus-visible:ring-offset-1">
                   Save{globalMode ? " (Global)" : ""}
                 </button>
                 <button type="button" onClick={() => { setShowAdd(false); setNewKey(""); setNewValue(""); }}
-                  className="px-2 py-1 bg-surface-card hover:bg-surface-card text-[10px] rounded text-ink-mid">Cancel</button>
+                  className="px-2 py-1 bg-surface-card hover:bg-surface-card text-[10px] rounded text-ink-mid focus-visible:outline-none focus-visible:ring-2 focus-visible:ring-accent focus-visible:ring-offset-1">Cancel</button>
               </div>
             </div>
           ) : (
-            <button type="button" onClick={() => setShowAdd(true)} className="text-[10px] text-accent hover:text-accent">
+            <button type="button" onClick={() => setShowAdd(true)} className="text-[10px] text-accent hover:text-accent focus-visible:outline-none focus-visible:ring-2 focus-visible:ring-accent focus-visible:ring-offset-1">
               + Add {globalMode ? "Global " : ""}Variable
             </button>
           )}

canvas/src/styles/settings-panel.css

@@ -684,6 +684,11 @@
   cursor: pointer;
 }
 
+.guard-dialog__keep-btn:focus-visible {
+  outline: var(--focus-ring);
+  outline-offset: var(--focus-ring-offset);
+}
+
 .guard-dialog__discard-btn {
   background: #2563eb;
   color: #ffffff;
@@ -693,6 +698,11 @@
   cursor: pointer;
 }
 
+.guard-dialog__discard-btn:focus-visible {
+  outline: var(--focus-ring);
+  outline-offset: var(--focus-ring-offset);
+}
+
 /* ── Settings button (top bar) ─────────────────────── */
 
 .settings-button {