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>

Jobs/cv-search-job/Dockerfile

@@ -0,0 +1,28 @@
+FROM mcr.microsoft.com/dotnet/sdk:10.0 AS build
+ARG BUILD_CONFIGURATION=Release
+WORKDIR /src
+
+COPY Jobs/cv-search-job/cv-search-job.csproj Jobs/cv-search-job/
+COPY Jobs/job-scheduler/job-scheduler.csproj Jobs/job-scheduler/
+COPY Apis/cv-search-models/cv-search-models.csproj Apis/cv-search-models/
+COPY Apis/cv-matcher-api-models/cv-matcher-api-models.csproj Apis/cv-matcher-api-models/
+COPY Apis/shared-models/shared-models.csproj Apis/shared-models/
+COPY Helpers/startup-helpers/startup-helpers.csproj Helpers/startup-helpers/
+
+RUN dotnet restore Jobs/cv-search-job/cv-search-job.csproj
+
+COPY Jobs/cv-search-job/ Jobs/cv-search-job/
+COPY Jobs/job-scheduler/ Jobs/job-scheduler/
+COPY Apis/cv-search-models/ Apis/cv-search-models/
+COPY Apis/cv-matcher-api-models/ Apis/cv-matcher-api-models/
+COPY Apis/shared-models/ Apis/shared-models/
+COPY Helpers/startup-helpers/ Helpers/startup-helpers/
+
+RUN dotnet publish Jobs/cv-search-job/cv-search-job.csproj -c $BUILD_CONFIGURATION -o /app/publish /p:UseAppHost=false
+
+FROM mcr.microsoft.com/dotnet/aspnet:10.0 AS final
+WORKDIR /app
+
+COPY --from=build /app/publish .
+
+ENTRYPOINT ["dotnet", "cv-search-job.dll"]