`add_tag` view crashes with TypeError, Flask view incorrectly accepts `request` parameter

[System625]

Description

The add_tag view function in tahrir/views/admin.py (line 227) is defined as:

def add_tag(request):

Flask view functions do not receive request as a positional argument — it should be accessed via from flask import request (which is already imported at the top of the file). This causes the endpoint to always crash with a TypeError because Flask passes zero positional arguments to the view function.

Steps to Reproduce

1. Log in as an admin
2. Navigate to a badge page
3. Attempt to add a tag via the form (POST to /add_tag)
4. The endpoint crashes with: TypeError: add_tag() missing 1 required positional argument: 'request'

Expected Behavior

The tag should be added to the badge and the user should be redirected back to the badge page.

[System625]

I will be working on this

[System625]

@gridhead Requesting assignment, targeting swatantrya branch

[gridhead]

Closing this as unfixed