v16.4.0

## Features
* Adds “Returned Amount” column to "Employee Advance Summary" report so users can see repayments without manually adding the field. (https://github.com/frappe/hrms/pull/4100)

## Bug Fixes
* Renames the _Status_ field to _Boarding Status_ in **Employee Onboarding** and updates list filters accordingly, so switching from the list to the report view now works without an error. (https://github.com/frappe/hrms/pull/4082)
* The "Shift Attendance" report now shows **Attendance** records even when no check-in exists, so absences and manual entries appear in the results. It also respects each user’s access rights, displaying only the records they are allowed to view. (https://github.com/frappe/hrms/pull/4085)
* Warnings for missing holiday lists in **Leave Application** now state the exact date that lacks a list. (https://github.com/frappe/hrms/pull/4095)
* Fixes issue where **Attendance** records were missing from the calendar view; the calendar now displays each employee’s attendance status. (https://github.com/frappe/hrms/pull/4096)

**Authors**: @Praveenkumar26-S, @nareshkannasln, @asmitahase, @sarathibalamurugan
**Reviewers**: @asmitahase

<details>
<summary>AI content</summary>

 For these release notes, we used an LLM (OpenAI o3) to review and summarise the code changes, along with the associated issue and PR descriptions. It may contain typical errors and inaccuracies. You can read the prompt [here](https://github.com/barredterra/pretty_release_notes). 

Changes with the following labels were excluded:
- skip-release-notes

Changes with the following types were excluded:
- style
 - docs
 - chore
 - ci
 - refactor
 - test
 - build

</details>