235e291d8f
Introduces the Career Workspace's bounded data foundation, additive and backwards-compatible: ApplicationUser.ProfileCvStructureJson stays the authoritative column every existing read path uses; the new CareerProfiles/CareerProfileVersions tables mirror it via ICareerProfileService so future Career Workspace features (variants, history UI) have real tables to build on rather than starting a second migration later. - CareerProfile: one snapshot row per user (Version, ProfileJson). - CareerProfileVersion: append-only history, one row per save (upload/rebuild/improve/reprocess/parse), so a profile edit is never silently lost the way ProfileCvStructureJson overwrites are today. - Stable item IDs assigned to jobs/education/certifications/projects on first save and preserved across later saves -- the prerequisite for CV variants to reference "this job" by identity instead of array position. - CvDateNormalizer: best-effort free-string -> "YYYY-MM" parsing for job/education/certification/project date ranges, kept alongside (never replacing) the original free-string fields. - Both SQLite (dev) and MySQL/MariaDB (prod) reconciler dialects, matching this repo's schema-via-raw-SQL-reconciler convention rather than EF migrations. Job tracking is untouched -- this is entirely within the profile/CV domain per the Career Workspace product boundary.