docs(M04): prioritize renderer fidelity milestone

Work-Package: M04-RND-FIDELITY-ROADMAP-001
Agent: sindo-main-codex-renderer-roadmap
Tests: coordination, documentation, target sequence, old-link and diff gates pass
Fidelity: original build-12340 captures are authoritative; Noggit is secondary reference

targets/06-content-project.md

@@ -0,0 +1,33 @@
+# M06 — Content Project
+
+<!-- OPENWC_TARGET:OPEN -->
+
+## Outcome
+
+Создать версионируемый источник истины для пользовательских модификаций.
+
+## Steps
+
+- [ ] Реализовать manifest, schema version, dependencies и profiles.
+- [ ] Реализовать stable symbolic IDs и deterministic numeric allocation manifest.
+- [ ] Добавить канонические map, placement, creature, gameobject, quest и localization entities.
+- [ ] Реализовать typed references и graph validation.
+- [ ] Реализовать deterministic save/load и semantic diff.
+- [ ] Добавить schema migration `previous → current`, backup и fixtures.
+- [ ] Реализовать ordered overlays без изменения extracted upstream assets.
+- [ ] Обеспечить headless validate/build parity с Editor.
+- [ ] Зарезервировать versioned navigation profile/artifact manifest: source geometry hash, backend/version, parameters и tile checksums без хранения generated cache как исходника.
+
+## Exit criteria
+
+Synthetic project проходит create/edit/undo/save/reload/migrate/build; повторная сборка создаёт byte-stable manifest/artifacts там, где формат это допускает.
+
+## Evidence
+
+- Date:
+- Revision/worktree:
+- Commands:
+- Results:
+- Fidelity comparison:
+- Changed files:
+- Remaining risks: