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/cv-search-models/Settings/JobSearchSettings.cs

@@ -0,0 +1,21 @@
+namespace CvSearch.Models.Settings;
+
+public sealed class JobSearchSettings
+{
+    public bool Enabled { get; set; } = true;
+    public string JobSearchLinkBaseUrl { get; set; } = string.Empty;
+    public int TokenExpiryDays { get; set; } = 7;
+    public int MinMatchScore { get; set; } = 15;
+    public int MaxJobsToMatch { get; set; } = 15;
+    public List<JobProviderConfig> Providers { get; set; } = [];
+}
+
+public sealed class JobProviderConfig
+{
+    public string Name { get; set; } = string.Empty;
+    public bool Enabled { get; set; } = true;
+    public string SearchUrlTemplate { get; set; } = string.Empty;
+    public string JobLinkContains { get; set; } = string.Empty;
+    public List<string> InitialKeywords { get; set; } = [];
+    public int MaxResults { get; set; } = 20;
+}