feat: complete release readiness work

- consolidate API ownership and remove dead vendor code

- add Stripe billing, learning paths, and public CV hardening

- add migration, recovery, security, audit, and browser gates

job-tracker-ui/src/types.ts

@@ -144,6 +144,12 @@ export interface MatchScoreSectionCoverage {
   total: number;
 }
 
+export interface LearningRecommendation {
+  id: number;
+  keyword: string;
+  status: "pending" | "done" | "dismissed";
+}
+
 export interface StatusSuggestion {
   hasSuggestion: boolean;
   suggestedStatus?: string | null;
@@ -163,6 +169,7 @@ export interface MatchScore {
   missingKeywords: string[];
   sectionCoverage: MatchScoreSectionCoverage[];
   hasEnoughSignal: boolean;
+  learningRecommendations: LearningRecommendation[];
 }
 
 export interface CandidateFit {