Add AI-driven game validation and graphics diagnostics

[Pursche]

Summary

Adds the Game-side automation and diagnostics required for Codex or Claude Code to run deterministic validation workloads through MCPTools.

Changes

• Add the restricted automation_run console command for executing Luau scripts from the configured automation root.
• Emit request-scoped automation and artifact lifecycle markers through the process log.
• Add Luau APIs for:
  • Scheduling callbacks after a duration or number of frames.
  • Discovering and loading maps and camera saves.
  • Inspecting and changing CVARs.
  • Dumping named render targets to PNG files.
  • Taking opt-in RenderDoc captures.
  • Controlling and annotating Tracy captures.
• Add game-ready, map-loaded, and map-load-failed events for deterministic asynchronous workloads.
• Add retained validation sequences for:
  • Fast representative map coverage.
  • Loading every available map.
  • Sweeping finite CVAR values and restoring their original state.
  • Render-target and RenderDoc capture smoke tests.
• Add automation documentation and an AI validation runbook.
• Add unit coverage for automation path handling, scripting APIs, render-target capture, and RenderDoc capture.
• Keep RenderDoc disabled unless Game is launched with -renderdoc; the capture object and DLL are not loaded otherwise.
• Fix SVSM dynamic shadow handling by:
  • Removing the per-caster dynamic page-marking limit.
  • Increasing the default dynamic shadow pool from 2048 to 3072.
  • Keeping live pool-size edits pending until restart while continuing to use the allocated pool dimensions.

Validation

The retained scripts provide deterministic workloads for the three supported Vulkan validation modes:

• Core validation
• Synchronization validation
• GPU-assisted validation

Generated reports and capture artifacts are written to ignored directories rather than committed to source control.