fix(gain): convert history timestamps from UTC to local timezone

[yogasw]

rtk gain --history displays timestamps in UTC, which is confusing for users in non-UTC timezones. For example, a command run at 17:09 WIB (UTC+7) would show as 03-13 10:09.

[CLAassistant]

All committers have signed the CLA.

[pszymkowiak]

Hi! Two things needed before we can review:

1. Retarget to develop — this PR targets master, but all PRs should target develop. You can change the base branch in the PR settings (right sidebar).
2. Sign the CLA — if not already done, please sign at https://cla-assistant.io/rtk-ai/rtk

Thanks!

[aeppling]

Hey

We are cleaning up the codebase and improving the project structure for better onboarding. As part of this effort, PR #826 reorganizes src/ from a flat layout into subfolders.

No logic changes — only file moves and import path updates.

What you need to do

Rebase your branch on develop when receiving this comment:

git fetch origin && git rebase origin/develop

Git detects renames automatically. If you get import conflicts, update the paths:

use crate::git;        // now: use crate::cmds::git::git;
use crate::tracking;   // now: use crate::core::tracking;
use crate::config;     // now: use crate::core::config;
use crate::init;       // now: use crate::hooks::init;
use crate::gain;       // now: use crate::analytics::gain;

Need help rebasing? Tag @aeppling

[yogasw]

Done! @pszymkowiak I've switched the base branch to develop and signed the CLA.

I also updated the path for the gain logic since src/gain.rs has moved to src/analytic/gain.rs. Thanks!