list_entities: search parameter not mapped to 'q' query param

[vdavez]

Bug

TangoClient.list_entities() accepts a search keyword argument, and the docstring says it "maps to 'q' parameter." However, the implementation sends search as the literal query parameter name instead of q:

# In tango/client.py, list_entities():

# Map 'search' parameter to 'q' (query parameter)
if search:
    params["search"] = search  # Bug: should be params["q"] = search

This causes the Tango API to return 400 Bad Request since it doesn't recognize search as a valid query parameter on /api/entities/.

Steps to reproduce

from tango import TangoClient

client = TangoClient()
# This sends GET /api/entities/?search=booz+allen+hamilton → 400 Bad Request
response = client.list_entities(search="booz allen hamilton")

Expected behavior

The SDK should send q=booz+allen+hamilton in the query string, matching the API's expected parameter name and the docstring's documented behavior.

Workaround

Pass q directly as a filter kwarg:

# This works — sends GET /api/entities/?q=booz+allen+hamilton → 200 OK
response = client.list_entities(q="booz allen hamilton")

Fix

In list_entities, change:

params["search"] = search

to:

params["q"] = search