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/handle-exec-command.ts

@@ -5,12 +5,12 @@ import type { ApplyPatchCommand, ApprovalPolicy } from "../../approvals.js";
 import type { ResponseInputItem } from "openai/resources/responses/responses.mjs";
 
 import { exec, execApplyPatch } from "./exec.js";
-import { isLoggingEnabled, log } from "./log.js";
 import { ReviewDecision } from "./review.js";
 import { FullAutoErrorMode } from "../auto-approval-mode.js";
 import { SandboxType } from "./sandbox/interface.js";
 import { canAutoApprove } from "../../approvals.js";
 import { formatCommandForDisplay } from "../../format-command.js";
+import { isLoggingEnabled, log } from "../logger/log.js";
 import { access } from "fs/promises";
 
 // ---------------------------------------------------------------------------