New skills: Cinemachine 3, build automation/CI, save systems, AI Navigation, UGS multiplayer, VFX Graph, localization, XR #43

Why it matters

The 18 skills cover core scripting well, but several areas Unity developers ask about daily have no coverage. The roadmap already lists some (Cinemachine, VFX Graph, Localization, build automation). Filling them widens who the plugin is useful for.

Gaps found (only bare package mentions today)

• Cinemachine 3.x (API changed heavily from 2.x; models often produce 2.x code)
• AI Navigation / NavMesh (NavMeshSurface, agents, links)
• VFX Graph and particle systems
• Localization (com.unity.localization, string tables, smart strings)
• Save systems (versioned save data, atomic writes, cloud saves)
• Unity Gaming Services / Multiplayer Services (Authentication, Relay, Lobby, Sessions, Cloud Save)
• XR (XR Interaction Toolkit, OpenXR)
• Build automation and CI (Build Profiles, BuildPipeline, batchmode, GameCI GitHub Actions)
• Lighting and baking, Terrain
• 2D depth: Tilemap, Sprite Atlas, 2D Animation / IK
• Performance (Unity 6 tools): GPU Resident Drawer, Project Auditor, BatchRendererGroup, STP missing from performance-optimization.

Suggested approach

Prioritize by demand: Cinemachine 3, build automation/CI, save systems, AI Navigation, UGS multiplayer, then the rest. Each new skill follows the existing frontmatter standard and includes compiling Unity 6 examples.

Done when

At least the first five skills ship, with manifest, README and docs nav updated.