Exploration mode on doom-player with image debug support

[ruifigueira]

• Added optional Workers AI binding support for bot scripts.
• Exposed optional ai.run(...) inside the bot sandbox when env.AI exists.
• Added bot.screenshot() so bots can capture the current game frame.
• Added bot.logImage(...) and a UI image panel for visual bot debugging.
• Added bot.encodePng(...) for bot-generated debug maps.
• Added an AI vision-navigation example using Workers AI.
• Added Explore: memory-map (no LLM) bot example.
• Improved exploration behavior with:
  • high-res memory map and cropped debug images
  • raycast/thing/door/switch/exit painting
  • exploration-first target selection
  • door/use cooldown to avoid open-close toggling
  • post-use forward commit to handle stale door state
  • safer wall/corner avoidance
  • avoidance bearing lock to reduce micro-rotation
  • detailed per-tick debug logs
• Documented get_state staleness expectations.

Non-LLM exploration mode keeps an internal map from its raycasts / state, and it logs it once in a while, see column on the right:

Example of internal map with raycast / state: