refactor(models): share param-B inference

src/shared/model-param-b.ts

@@ -0,0 +1,19 @@
+export function inferParamBFromIdOrName(text: string): number | null {
+  const raw = text.toLowerCase();
+  const matches = raw.matchAll(/(?:^|[^a-z0-9])[a-z]?(\d+(?:\.\d+)?)b(?:[^a-z0-9]|$)/g);
+  let best: number | null = null;
+  for (const match of matches) {
+    const numRaw = match[1];
+    if (!numRaw) {
+      continue;
+    }
+    const value = Number(numRaw);
+    if (!Number.isFinite(value) || value <= 0) {
+      continue;
+    }
+    if (best === null || value > best) {
+      best = value;
+    }
+  }
+  return best;
+}