chore: improve storage/ implementation; use log(...) consistently (#473)

This PR tidies up primitives under storage/.

**Noop changes:**

* Promote logger implementation to top-level utility outside of agent/
* Use logger within storage primitives
* Cleanup doc strings and comments

**Functional changes:**

* Increase command history size to 10_000
* Remove unnecessary debounce implementation and ensure a session ID is
created only once per agent loop

---------

Signed-off-by: Thibault Sottiaux <tibo@openai.com>

codex-cli/src/utils/agent/sandbox/macos-seatbelt.ts

@@ -2,7 +2,7 @@ import type { ExecResult } from "./interface.js";
 import type { SpawnOptions } from "child_process";
 
 import { exec } from "./raw-exec.js";
-import { log } from "../log.js";
+import { log } from "../../logger/log.js";
 
 function getCommonRoots() {
   return [