feat(logs): Enrich logs with context-aware primtive types (#5949)

* enrich logs with context-aware primtive types

* Delete apps/core/docs/LOG_CONTEXT.md

letta/log_context.py

@@ -0,0 +1,33 @@
+from contextvars import ContextVar
+from typing import Any, Optional
+
+_log_context: ContextVar[dict[str, Any]] = ContextVar("log_context", default={})
+
+
+def set_log_context(key: str, value: Any) -> None:
+    ctx = _log_context.get().copy()
+    ctx[key] = value
+    _log_context.set(ctx)
+
+
+def get_log_context(key: Optional[str] = None) -> Any:
+    ctx = _log_context.get()
+    if key is None:
+        return ctx
+    return ctx.get(key)
+
+
+def clear_log_context() -> None:
+    _log_context.set({})
+
+
+def update_log_context(**kwargs: Any) -> None:
+    ctx = _log_context.get().copy()
+    ctx.update(kwargs)
+    _log_context.set(ctx)
+
+
+def remove_log_context(key: str) -> None:
+    ctx = _log_context.get().copy()
+    ctx.pop(key, None)
+    _log_context.set(ctx)