Improve operational UX, recovery flows, and action safety

Implement the approved UX review across Fleet, Betas, Library, deployments, and Settings. Add reviewed promotion and reconciliation plans, atomic queued-removal cancellation, recoverable beta drafts and launch inputs, accessible controls, and mobile improvements.

Validated with 473 tests, a clean typecheck, production build, and isolated desktop/mobile browser walkthroughs. Include the review and implementation coverage notes.

src/lib/ui/styles/components.css

@@ -4,7 +4,7 @@
 :where(input:not([type='checkbox']):not([type='radio']), select, textarea) {
     min-width: 0; max-width: 100%; min-height: 40px; padding: 10px 12px;
     color: var(--text-primary); background: var(--surface-sunken);
-    border: 1px solid var(--border-strong); border-radius: var(--radius-md);
+    border: 1px solid var(--border-control); border-radius: var(--radius-md);
 }
 :where(input, textarea)::placeholder { color: var(--text-tertiary); opacity: 1; }
 :where(button, summary) { cursor: pointer; }

src/lib/ui/styles/tokens.css

@@ -70,6 +70,8 @@
     --border-subtle: rgba(255, 255, 255, 0.06);
     --border-strong: rgba(255, 255, 255, 0.12);
     --border-focus: var(--blue-500);
+    --border-control: #576176;
+    --border-control-hover: #78869f;
 
     /* Accent — one color, one voice. */
     --accent-primary: var(--blue-500);