feat: add tool scoping and orchestration markers to agent tool registry

Introduce `mark_orchestration_tools`, `set_tool_scope`, and `reset_tool_scope` in `agents/agent.py` to allow runtime filtering of tool payloads by scope and orchestration flag. Refactor `get_tool_payloads` to respect the active scope and exclude orchestration-only tools. Update `agents/core/__init__.py` with `worker_tool_names` helper that returns read/reasoning tools plus conditional write/verify tools per mode, replacing the old `payloads_for` exclusion logic. Modify `agents/maestro.py` to call `mark_orchestration_tools` and wire per-agent result recording via `on_result` callback in `run_fleet`. Extend `agents/orchestrator.py` `run_fleet` signature to accept an optional `on_result` callable and invoke it after each agent run. Revise `agents/style.py` em-dash rule to distinguish prose from data occurrences, and add repository layout guidance to `agents/base.py` MAINT_HEADER.

devplacepy/services/bot/state.py

@@ -2,7 +2,6 @@
 
 import json
 import logging
-import os
 from dataclasses import dataclass, field, asdict
 from pathlib import Path
 
@@ -55,7 +54,7 @@ class BotState:
         path.parent.mkdir(parents=True, exist_ok=True)
         tmp = path.with_suffix(path.suffix + ".tmp")
         tmp.write_text(json.dumps(asdict(self), indent=2, default=str))
-        os.replace(str(tmp), str(path))
+        tmp.replace(path)
 
     @classmethod
     def load(cls, path: Path) -> "BotState":