feat(release): v0.2.0 — batch 837 export, ClaimCard, theme tokens

Backend:

- New POST /api/batches/{id}/export-837: regenerate X12 837 files
  for a list of claim_ids into a ZIP using HCPF file naming standards,
  with a unique interchange/group control number per export. Wire
  the clearhouse Loop 1000A (NM1*41 + PER) and per-payer receiver
  (NM1*40) blocks so the serializer no longer falls back to
  CYCLONE / RECEIVER placeholders.
- /api/parse-837 and /api/parse-835 now surface the server-side
  batch_id in both JSON and NDJSON response shapes so the frontend
  can hit batch-scoped endpoints without an extra listBatches
  round-trip.
- Filename helpers and the 837 serializer updated to match the new
  HCPF envelope; tests cover batch export, parse batch_id, and the
  serializer's control-number uniqueness guarantee.

Frontend:
- New shared components: ClaimCard, ClaimCard837, DominantKpiCard,
  EditorialNote, ExportBar, TickerTape, and a charts/ set
  (BarChart, HBarChart, SegmentedBar, AgingBars).
- New useBatchExport hook driving ExportBar's download flow against
  the new endpoint.
- ClaimDrawer, Lane, and Layout migrated from raw CSS-variable
  colors to Tailwind theme tokens (bg-card, text-foreground,
  border/60, etc.) for consistency with the rest of the instrument
  chrome; the active tab indicator gains a subtle accent glow.
- Upload, Inbox, Batches, BatchDiff, Reconciliation, and Acks pages
  reworked to compose the new shared components and consume the new
  batch-scoped API surface (notably ExportBar wired into Batches).

Tooling / Docs:
- Add audit-uiux.mjs and a docs/goodclaim.x12 sample fixture.
- Update ClaimDrawer testids and add coverage for the new
  components and the useBatchExport hook.

Rolls up into the v0.2.0 release tag.

src/components/ClaimDrawer/LineReconciliationTab.tsx

@@ -31,26 +31,26 @@ export function LineReconciliationTab({
       >
         <div className="flex gap-5 font-mono tabular-nums text-sm">
           <span data-testid="billed-total" className="flex flex-col gap-0.5">
-            <span className="text-[color:var(--m-ink-tertiary)] eyebrow">
+            <span className="text-muted-foreground eyebrow">
               Billed
             </span>
-            <span className="text-[color:var(--m-ink-primary)] font-semibold">
+            <span className="text-foreground font-semibold">
               {fmt.usdPrecise(Number(summary.billedTotal))}
             </span>
           </span>
           <span data-testid="paid-total" className="flex flex-col gap-0.5">
-            <span className="text-[color:var(--m-ink-tertiary)] eyebrow">
+            <span className="text-muted-foreground eyebrow">
               Paid
             </span>
-            <span className="text-[color:var(--m-ink-primary)] font-semibold">
+            <span className="text-foreground font-semibold">
               {fmt.usdPrecise(Number(summary.paidTotal))}
             </span>
           </span>
           <span data-testid="adjustments-total" className="flex flex-col gap-0.5">
-            <span className="text-[color:var(--m-ink-tertiary)] eyebrow">
+            <span className="text-muted-foreground eyebrow">
               Adjustments
             </span>
-            <span className="text-[color:var(--m-ink-primary)] font-semibold">
+            <span className="text-foreground font-semibold">
               {fmt.usdPrecise(Number(summary.adjustmentTotal))}
             </span>
           </span>
@@ -70,7 +70,7 @@ export function LineReconciliationTab({
 
       <div className="grid grid-cols-2 gap-4">
         <div data-testid="left-column">
-          <h3 className="eyebrow text-[color:var(--m-ink-tertiary)] mb-2">
+          <h3 className="eyebrow text-muted-foreground mb-2">
             Billed (837 SV1)
           </h3>
           {leftRows.map((row) => (
@@ -78,7 +78,7 @@ export function LineReconciliationTab({
           ))}
         </div>
         <div data-testid="right-column">
-          <h3 className="eyebrow text-[color:var(--m-ink-tertiary)] mb-2">
+          <h3 className="eyebrow text-muted-foreground mb-2">
             Adjudicated (835 SVC)
           </h3>
           {rightRows.map((row) => (
@@ -114,7 +114,7 @@ function LineCard({
 
   return (
     <div
-      className="flex flex-col gap-1 py-2 px-3 mb-2 rounded-r-md transition-colors hover:bg-[color:var(--m-ink-tertiary)]/5"
+      className="flex flex-col gap-1 py-2 px-3 mb-2 rounded-r-md transition-colors hover:bg-muted/40"
       style={{
         borderLeft: `3px solid ${accentColor}`,
         background: "rgba(255,255,255,0.02)",
@@ -123,9 +123,9 @@ function LineCard({
     >
       <div className="flex items-baseline justify-between">
         <div className="font-mono text-sm">
-          <span className="font-semibold text-[color:var(--m-ink-primary)]">{procCode}</span>
+          <span className="font-semibold text-foreground">{procCode}</span>
           {lineNumber !== null ? (
-            <span className="text-[color:var(--m-ink-tertiary)] ml-2">
+            <span className="text-muted-foreground ml-2">
               #{lineNumber}
             </span>
           ) : null}
@@ -146,16 +146,16 @@ function LineCard({
             </span>
           ) : null}
         </div>
-        <div className="font-mono tabular-nums text-xs text-[color:var(--m-ink-primary)] font-semibold">
+        <div className="font-mono tabular-nums text-xs text-foreground font-semibold">
           {side === "left" && cl ? <span>{fmt.usdPrecise(Number(cl.charge))}</span> : null}
           {side === "right" && svc ? <span>{fmt.usdPrecise(Number(svc.payment))}</span> : null}
         </div>
       </div>
       {row.adjustments.length > 0 ? (
-        <ul className="text-xs font-mono text-[color:var(--m-ink-tertiary)] mt-1 space-y-0.5">
+        <ul className="text-xs font-mono text-muted-foreground mt-1 space-y-0.5">
           {row.adjustments.map((a, i) => (
             <li key={i}>
-              <span className="text-[color:var(--m-ink-secondary)]">{a.groupCode}-{a.reasonCode}</span>
+              <span className="text-foreground/80">{a.groupCode}-{a.reasonCode}</span>
               <span className="ml-2 tabular-nums">{fmt.usdPrecise(Number(a.amount))}</span>
             </li>
           ))}