Advance M8-M11 parity workflows

web/protocol/nanovdb-progressive-redraw.ts

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+export const NANOVDB_PROGRESSIVE_REDRAW_MAX_FRAMES = 32;
+export const NANOVDB_PROGRESSIVE_REDRAW_LIMIT_CODE = "NANOVDB_PROGRESSIVE_REDRAW_LIMIT" as const;
+
+export interface NanoVDBProgressiveRedrawBudgetResult {
+  allowed: boolean;
+  redrawCount: number;
+  capped: boolean;
+  errorCode: typeof NANOVDB_PROGRESSIVE_REDRAW_LIMIT_CODE | null;
+}
+
+export function validateNanoVDBProgressiveRedrawLimit(value: number): number {
+  if (!Number.isSafeInteger(value) || value < 1 || value > 1024) {
+    throw new Error("NANOVDB_INVALID_ARGUMENT: progressive redraw limit must be an integer from 1 to 1024");
+  }
+  return value;
+}
+
+export function consumeNanoVDBProgressiveRedrawBudget(
+  redrawCount: number,
+  maxRedraws: number,
+): NanoVDBProgressiveRedrawBudgetResult {
+  if (!Number.isSafeInteger(redrawCount) || redrawCount < 0) {
+    throw new Error("NANOVDB_INVALID_ARGUMENT: progressive redraw count must be a non-negative integer");
+  }
+  const limit = validateNanoVDBProgressiveRedrawLimit(maxRedraws);
+  if (redrawCount >= limit) {
+    return { allowed: false, redrawCount, capped: true, errorCode: NANOVDB_PROGRESSIVE_REDRAW_LIMIT_CODE };
+  }
+  const nextCount = redrawCount + 1;
+  const capped = nextCount >= limit;
+  return {
+    allowed: true,
+    redrawCount: nextCount,
+    capped,
+    errorCode: capped ? NANOVDB_PROGRESSIVE_REDRAW_LIMIT_CODE : null,
+  };
+}