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

JobTrackerApi/Models/Company.cs

@@ -0,0 +1,25 @@
+using System.Collections.Generic;
+using System.Text.Json.Serialization;
+
+namespace JobTrackerApi.Models
+{
+public class Company
+{
+    public int Id { get; set; }
+    public string? OwnerUserId { get; set; }
+    public string Name { get; set; } = "";
+    public string? Location { get; set; }
+    public string? Source { get; set; } // e.g., Finn.no, LinkedIn
+
+    // Lightweight CRM fields
+    public string? RecruiterName { get; set; }
+    public string? RecruiterEmail { get; set; }
+    public string? RecruiterLinkedIn { get; set; }
+    public DateTime? LastContactedAt { get; set; }
+    public DateTime? NextContactAt { get; set; }
+    public string? PipelineStage { get; set; }
+
+    [JsonIgnore]
+    public List<JobApplication> Jobs { get; set; } = new();
+}
+}