refactor: normalize FlowPilot/Assistant/ScriptBuilder to design system tokens

Replace hardcoded Tailwind color utilities with semantic CSS variable tokens
across 31 files in the FlowPilot, Assistant Chat, and Script Builder feature
communities — the areas graphify identified as design-system-free.

- text-blue-400 → text-accent, bg-blue-500/10 → bg-accent-dim, border-blue-500/20 → border-accent/20
- text-amber-400 → text-warning, bg-amber-400/10 → bg-warning-dim, border-l-amber-500 → border-l-warning
- text-rose-400/500 → text-danger, bg-rose-500/10 → bg-danger-dim
- text-emerald-400 → text-success, bg-emerald-500/10 → bg-success-dim, border-l-emerald-500 → border-l-success
- bg-white/[0.08] → bg-elevated (opacity hack → semantic surface token)
- bg-gradient-to-r from-blue-500 to-blue-400 → bg-accent (no gradient surfaces)
- bg-[#60a5fa] → bg-accent (hard-coded hex removed)

Also adds graphify-out/ to .gitignore.

Theme resilience: accent color has changed twice in 5 weeks. Semantic tokens
mean the next change is a 1-line edit in index.css, not 110 grep-and-replace.

Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>

frontend/src/components/flowpilot/FlowPilotActionBar.tsx

@@ -91,7 +91,7 @@ export function FlowPilotActionBar({
         <button
           onClick={() => { setShowResolve(true); setShowEscalate(false) }}
           disabled={!canResolve || isProcessing}
-          className="flex items-center justify-center gap-1.5 rounded-lg bg-emerald-500/10 border border-emerald-500/20 px-2.5 sm:px-4 py-2 min-h-[40px] sm:min-h-[44px] text-xs sm:text-sm font-medium text-emerald-400 hover:bg-emerald-500/20 disabled:opacity-40 disabled:pointer-events-none transition-colors"
+          className="flex items-center justify-center gap-1.5 rounded-lg bg-success-dim border border-success/20 px-2.5 sm:px-4 py-2 min-h-[40px] sm:min-h-[44px] text-xs sm:text-sm font-medium text-success hover:bg-success/20 disabled:opacity-40 disabled:pointer-events-none transition-colors"
         >
           <CheckCircle2 size={15} />
           Resolve
@@ -99,7 +99,7 @@ export function FlowPilotActionBar({
         <button
           onClick={() => setShowEscalate(true)}
           disabled={!canEscalate || isProcessing}
-          className="flex items-center justify-center gap-1.5 rounded-lg bg-amber-500/10 border border-amber-500/20 px-2.5 sm:px-4 py-2 min-h-[40px] sm:min-h-[44px] text-xs sm:text-sm font-medium text-amber-400 hover:bg-amber-500/20 disabled:opacity-40 disabled:pointer-events-none transition-colors"
+          className="flex items-center justify-center gap-1.5 rounded-lg bg-warning-dim border border-warning/20 px-2.5 sm:px-4 py-2 min-h-[40px] sm:min-h-[44px] text-xs sm:text-sm font-medium text-warning hover:bg-warning/20 disabled:opacity-40 disabled:pointer-events-none transition-colors"
         >
           <ArrowUpRight size={15} />
           Escalate
@@ -108,7 +108,7 @@ export function FlowPilotActionBar({
           <button
             onClick={() => setShowStatusUpdate(true)}
             disabled={isProcessing}
-            className="flex items-center justify-center gap-1.5 rounded-lg bg-blue-500/10 border border-blue-500/20 px-2.5 sm:px-4 py-2 min-h-[40px] sm:min-h-[44px] text-xs sm:text-sm font-medium text-blue-400 hover:bg-blue-500/20 disabled:opacity-40 disabled:pointer-events-none transition-colors"
+            className="flex items-center justify-center gap-1.5 rounded-lg bg-accent-dim border border-accent/20 px-2.5 sm:px-4 py-2 min-h-[40px] sm:min-h-[44px] text-xs sm:text-sm font-medium text-accent hover:bg-accent/20 disabled:opacity-40 disabled:pointer-events-none transition-colors"
             title="Share Update"
           >
             <FileText size={15} />
@@ -166,7 +166,7 @@ export function FlowPilotActionBar({
               <button
                 onClick={handleResolve}
                 disabled={resolutionSummary.length < 5 || submitting}
-                className="rounded-lg bg-emerald-500/20 border border-emerald-500/30 px-4 py-2 min-h-[44px] text-sm font-medium text-emerald-400 hover:bg-emerald-500/30 disabled:opacity-50 transition-colors"
+                className="rounded-lg bg-success/20 border border-success/30 px-4 py-2 min-h-[44px] text-sm font-medium text-success hover:bg-success/30 disabled:opacity-50 transition-colors"
               >
                 {submitting ? 'Resolving...' : 'Resolve Session'}
               </button>
@@ -193,7 +193,7 @@ export function FlowPilotActionBar({
               <button
                 onClick={handleAbandon}
                 disabled={submitting}
-                className="rounded-lg bg-rose-500/20 border border-rose-500/30 px-4 py-2 min-h-[44px] text-sm font-medium text-rose-400 hover:bg-rose-500/30 disabled:opacity-50 transition-colors"
+                className="rounded-lg bg-danger/20 border border-danger/30 px-4 py-2 min-h-[44px] text-sm font-medium text-danger hover:bg-danger/30 disabled:opacity-50 transition-colors"
               >
                 {submitting ? 'Closing...' : 'Close Session'}
               </button>