TicketWatcher.list() shadows Python builtin `list`

[danchild]

Problem

TicketWatcher.list() in src/poller/watcher.py shadows Python's builtin list. The method itself uses list[dict] as a type annotation in its return type and local variables, which can lead to subtle type resolution issues or confusing behavior when the builtin is unexpectedly shadowed.

Affected files

• src/poller/watcher.py — method definition
• src/poller/main.py — three call sites (/watch, /watch/{ticket_key}, /watch GET)
• tests/test_epic_sync.py — four call sites in TestWatchListShowsChildren

Fix

Rename list() → list_tickets() and update all call sites.