Move `feed_is_live.set()` to after receiving the first valid
quote instead of setting early on venue-closed path. Prevents
sampler registration when no live data expected.
Also,
- drop redundant `.set()` call in quote iteration loop
- add TODO note about sleeping until venue opens vs forever
- init `first_quote: dict` early for consistency
(this commit msg was generated in some part by [`claude-code`][claude-code-gh])
[claude-code-gh]: https://github.com/anthropics/claude-code
Gud Boi
48493e50b0