Merge pull request #155 from ChandanMeher4/feat/ats-score-progression-chart

feat: add score progression chart to track ATS improvement over time

Author: Sachinchaurasiya360

client/src/lib/query-keys.ts

@@ -21,6 +21,7 @@ export const queryKeys = {
   ats: {
     all: ["ats"] as const,
     usage: () => ["ats", "usage"] as const,
+    history: () => ["ats", "history"] as const,
   },
   coverLetter: {
   history: ()           => ["cover-letter", "history"] as const,