Add pc-gaming skill for hardware specs and graphics settings advice

skills/pc-gaming/references/game-settings.md

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+# Optimal Game Settings (RX 7900 XTX @ 4K)
+
+## Cyberpunk 2077
+- **Recommended:** 1440p internal + RT Overdrive + FSR Quality (output 4K)
+- **Why:** Path tracing transforms the game visually. Native 4K without RT looks flat by comparison.
+- **Expected FPS:** ~40-50 with FSR Quality
+- **Alternative:** Native 4K, RT off, Ultra preset → 60+ FPS (but less impressive lighting)
+
+## Hogwarts Legacy
+- **Recommended:** Native 4K, RT off, Ultra settings
+- **Why:** RT only adds subtle reflections/shadows — not worth the FPS cost. Native 4K clarity wins.
+- **Expected FPS:** 60+ without RT
+- **With RT:** ~35-45 FPS at 4K (not smooth enough)
+
+---
+*Add new games as they're researched. Include source/benchmark date.*
+*Last updated: 2026-02-26*

skills/pc-gaming/references/hardware.md

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+# PC Hardware Specs
+
+## GPU
+- **Model:** AMD Radeon RX 7900 XTX
+- **VRAM:** 24 GB GDDR6
+- **Architecture:** RDNA 3
+- **RT Performance:** Good for light RT, struggles with heavy RT (path tracing) at 4K
+- **Upscaling:** FSR 3.x (frame gen + spatial)
+
+## Display
+- **Resolution:** 4K (3840x2160)
+- **Refresh Rate:** TODO
+- **FreeSync:** TODO
+- **HDR:** TODO
+
+## CPU
+- **Model:** TODO
+- **Cores/Threads:** TODO
+
+## RAM
+- **Size:** TODO
+- **Speed:** TODO
+
+## Storage
+- **Type:** TODO (SSD?)
+
+## OS / Driver
+- **OS:** TODO (Linux distro?)
+- **Mesa Version:** Mesa 26.0 (as of Feb 2026)
+- **Proton:** TODO
+
+## Gaming Device
+- **Handheld:** GPD Win 4 (separate device, for portable gaming)
+- **Desktop:** Main gaming PC (specs above)
+
+---
+*Last updated: 2026-02-26*