docs: add Blender skills section with detailed instructions for agents

AGENTS.md

@@ -65,6 +65,22 @@ Semantic Versioning: `MAJOR.MINOR.PATCH`.
 
 Always use a consistent scale test, named export presets, and repeatable import settings.
 
+## Blender skills
+
+`.agents/skills/blender-skills/` holds 94 Blender skill packs (MIT, blender-skills 1.3.0). They are agent instructions, not add-ons, and nothing in the pipeline depends on them.
+
+**All agents must consult the relevant skill packs before starting a task in that discipline.** Each patch section in `ROADMAP.md` lists its suggested skills; the general mapping is:
+
+- **Modeling / procedural assets** — `blender-modeler`, `procedural-modeling`, `geometry-nodes`, `hard-surface`.
+- **Façades and architecture** — `archviz`, `historical-worlds` (1920s Hollywood Blvd direction), `realistic-style`.
+- **Materials and textures** — `materials`, `texture-workflow`, `lookdev`.
+- **UVs and export** — `uv-workflow`, `export-pipeline`, `unreal-export` (verify against the `ue_metric_v1` / `ue_character_v1` presets in `Tools/`).
+- **Collision** — `collision-proxy` (UCX/UHX naming, hulls, simple colliders).
+- **Scene assembly / optimization** — `scene-assembly`, `asset-optimization`, `lod-pipeline`.
+- **Review and QA** — `qa-review`, `references` (reference-image-match and visual-match checklists), `camera-cinematography` (matching reference camera angles).
+
+**Caveat:** the skill packs assume MCP-driven interactive Blender. This project runs Blender headless via scripts in `Tools/` — use the skills as method guides (checklists, naming conventions, proportions, validation steps), not for their MCP tooling. The headless scripts remain the execution path.
+
 ## Licensing & Distribution
 
 - Publish project-owned code under a chosen open-source license.