fix: range-check tier rates and label keepalive commits honestly

verify.mjs only checked top-level rate fields, so a long-context tier could
carry any value and still pass CI. A keepalive-only run also committed under
the price-refresh message, which the history is read as a log of.

Author: ashokgelal

.github/workflows/refresh.yml

@@ -69,5 +69,11 @@ jobs:
           git config user.name "model-prices[bot]"
           git config user.email "noreply@cloudstack.llc"
           git add -A
-          git commit -m "chore: refresh prices from models.dev"
+          # A keepalive-only run must not claim prices moved; the history is
+          # read as a price-change log.
+          if git diff --cached --quiet -- v1; then
+            git commit -m "chore: keep the refresh schedule alive"
+          else
+            git commit -m "chore: refresh prices from models.dev"
+          fi
           git push

.gitignore

@@ -1,2 +1 @@
 node_modules/
-.keepalive.tmp

scripts/verify.mjs

@@ -12,6 +12,31 @@ import { COST_UNIT, MAX_RATE, SCHEMA_VERSION, serialize } from "./transform.mjs"
 const repoRoot = resolve(dirname(fileURLToPath(import.meta.url)), "..");
 const path = resolve(repoRoot, process.argv[2] ?? "v1/prices.json");
 
+
+// Token limits are counts, not rates, and are excluded from the rate ceiling.
+const LIMIT_FIELDS = new Set(["context", "max_output", "above_context"]);
+
+// Tiers hold their own copy of every rate field. Checking only the top level
+// would let a long-context rate carry any value at all.
+function rateProblems(model, label) {
+  const problems = [];
+  for (const [field, value] of Object.entries(model)) {
+    if (field === "tiers" && Array.isArray(value)) {
+      value.forEach((tier, index) => {
+        problems.push(...rateProblems(tier, `${label}.tiers[${index}]`));
+      });
+      continue;
+    }
+    if (LIMIT_FIELDS.has(field) || typeof value !== "number") {
+      continue;
+    }
+    if (value < 0 || value > MAX_RATE) {
+      problems.push(`${label}.${field} is out of range: ${value}`);
+    }
+  }
+  return problems;
+}
+
 const text = await readFile(path, "utf8");
 const artifact = JSON.parse(text);
 const problems = [];
@@ -35,10 +60,8 @@ for (const [providerId, entries] of Object.entries(artifact.providers ?? {})) {
       problems.push(`${providerId}/${modelId} is missing input or output`);
       continue;
     }
-    for (const [field, value] of Object.entries(model)) {
-      if (typeof value === "number" && (value < 0 || value > MAX_RATE) && field !== "context" && field !== "max_output") {
-        problems.push(`${providerId}/${modelId}.${field} is out of range: ${value}`);
-      }
+    for (const problem of rateProblems(model, `${providerId}/${modelId}`)) {
+      problems.push(problem);
     }
   }
 }