Add internet job search feature (cv-search-job)

- New cv-search-models shared library: EF entities + CvSearchDbContext for cvSearch schema (JobSearchTokens, JobSearchSessions, JobSearchResults tables)
- New cv-search-job worker service: polls DB for pending sessions, scrapes job boards via configurable HTML scraping, runs LLM scoring via cv-matcher-api, emails ranked results
- cv-matcher-api: JobTokenService creates one-time tokens; JobSearchController handles link clicks and creates sessions
- api: proxies job-search start endpoint, appends job search link to match result email
- CI workflow updated to build and push myai-cv-search-job:staging image
- CLAUDE.md documentation added for all affected services

Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>

Apis/api/Clients/Api/Contracts/IJobSearchApi.cs

@@ -0,0 +1,14 @@
+using CvMatcher.Models.Requests;
+using CvMatcher.Models.Responses;
+using Refit;
+
+namespace Api.Clients.Api.Contracts;
+
+public interface IJobSearchApi
+{
+    [Post("/api/cv/job-search/token")]
+    Task<CreateJobSearchTokenResponse> CreateTokenAsync([Body] CreateJobSearchTokenRequest request, CancellationToken ct);
+
+    [Post("/api/cv/job-search/token/{tokenId}/start")]
+    Task<StartJobSearchResponse> StartSearchAsync(string tokenId, CancellationToken ct);
+}