v2.4.0 — God of Digging + Thinking Broadcast

God of Digging

Third deity joins the pantheon — an enthusiastic hole connoisseur who actually modifies terrain for players. Four dig shapes: holes, tunnels, staircases, and shafts, all with instant block clearing, particle effects, and shared undo history.

• Structured responses: Uses pydantic-validated JSON (two-turn: dig action + memory composition), unlike the free-text approach of other gods
• Personality: Punny historical aliases each appearance, hole quality ratings, bounded memory archive of past excavations
• Inter-god communication: Can forward prayers to Kind God when requests are outside its domain — players see the handoff in chat
• Java plugin: executeDigCommand() handles all 4 shapes with staircase two-pass placement, 5-block headroom, and try-catch safety wrapper

Thinking Broadcast

All gods' inner monologue now appears in-game as colored chat messages. Players see the gods deliberating in real-time.

• Callback pattern: Each god's think() fires on_thinking with narrative text; for Kind God multi-turn schematic reasoning, thinking appears turn-by-turn
• Filtering: JSON blobs, fenced code blocks, minecraft commands, and markdown formatting stripped before display
• Word wrapping: All god chat messages wrapped at ~50 chars to fit Minecraft chat width, with proper indentation on continuation lines
• Line caps: Thinking capped at 6 lines, messages at 10 lines to prevent chat flooding

PR Review Fixes

• Java try-catch on executeDigCommand to protect the command polling loop
• Protected json.loads in _handle_tool_calls for malformed LLM output
• callable to Callable[[str], None] | None type annotations across all gods
• alias field capped at 100 chars, no-op validator removed
• FILO to FIFO terminology fix, docstring updates

Stats

• 328 tests (78 dig god + 27 thinking broadcast + existing)
• 2,139 lines changed across 13 files
• 4 new files: dig_god.py, dig_memory.py, test_dig_god.py, test_thinking_broadcast.py

Closes #24 | PR #25