Startup loader mirrors validate_content.py E7M4 gates (roster, freeze,
cross-ref, band caps); IContractTemplateRegistry resolves templates by id.
Bruno health smoke confirms host boot after catalog validation.
Track perks unlocked per grant and remove only those on race loss instead
of restoring a full pre-apply snapshot; re-run ReevaluateAfterLevelUp at
post-rollback levels so a concurrent winner's path-auto unlocks survive.
Capture pre-skill-apply XP and perk snapshots; on TryRecord loss reverse
each applied skill row via negative delta and restore the perk snapshot so
level-up unlocks from the loser call are reverted without clobbering a
concurrent winner's XP.
Batch skillXp then resetPerkState with XP rollback; 400 for invalid skillXp;
MasteryFixtureApi gate tests; README fixture vs grant semantics; Bruno GET playerId.
Replace fixture player ids with POST …/__dev/mastery-fixture (resetPerkState,
absolute skillXp). Bruno deny tests set state in pre-request on dev-local-1.
Gated to Development/Testing or Game:EnableMasteryFixtureApi.
Seed neo48-perk-fresh and neo48-perk-branch via Game:FixturePlayerIds;
level_too_low uses isolated fresh player, branch_already_chosen sets up
neo48-perk-branch in pre-request instead of skipping on shared state.
Mirror validate_content.py gates in MasteryCatalogLoader, expose IMasteryCatalogRegistry, cross-check skillIds against the skill catalog, and enforce tierIndex 1..N per track.
Replace placeholder XP level math with content-backed thresholds validated in CI and at server boot, and update docs/manual QA/review artifacts to reflect NEO-39 delivery and follow-up fixes.
Register SkillDefinitionCatalog from content/skills with JsonSchema.Net validation
mirroring validate_content.py and the prototype Slice 1 gate. Resolve paths via
Content:SkillsDirectory or discovery from AppContext.BaseDirectory. Eager-load
after WebApplication build so bad catalogs block startup. Add unit and host
tests, pin test factories to repo skills, document config in server/README, add
manual QA checklist, and extend Bruno GET /health smoke tests.