feat(ui): sweep remaining components for Deep Space consistency

Replace old design tokens and hardcoded colors across 29 files:
- bg-primary/text-primary-foreground -> bg-accent/text-white
- text-muted-foreground -> text-text-muted
- text-destructive/bg-destructive -> text-error/bg-error
- bg-muted -> bg-elevated (background usage)
- Hardcoded green/red/yellow/emerald/amber/slate -> semantic tokens
- Remove shadow-md/lg from cards, tooltips, topology nodes
- rounded-xl -> rounded-lg on cards/panels
- focus:ring-1 focus:ring-ring -> focus:border-accent on inputs

Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>

frontend/src/components/certificates/DeployCertDialog.tsx

@@ -148,7 +148,7 @@ export function DeployCertDialog({
 
               {availableDevices.length === 0 ? (
                 <div className="rounded-lg border border-border bg-elevated/50 p-4 text-center">
-                  <CheckCircle className="h-6 w-6 text-green-500 mx-auto mb-2" />
+                  <CheckCircle className="h-6 w-6 text-success mx-auto mb-2" />
                   <p className="text-sm font-medium text-text-primary">
                     All devices have certificates
                   </p>
@@ -231,7 +231,7 @@ export function DeployCertDialog({
 
           {step === 'done' && (
             <div className="py-8 text-center space-y-3">
-              <CheckCircle className="h-8 w-8 text-green-500 mx-auto" />
+              <CheckCircle className="h-8 w-8 text-success mx-auto" />
               <p className="text-sm font-medium text-text-primary">
                 Certificate deployed successfully
               </p>