fix: keep pull request filters session-local

TODO.md

@@ -1,13 +1,3 @@
-- [x] improve: pull requests - add a tab for drafts so PRs in this state don't populate the "open" tab.
-- [x] improve: pull requests - add a checkmark left of the PR entry in the PR list if the user in question (me) has already approved it.
-- [x] improve: pull requests - add a `🙏` emoji left of the PR entry in the PR list if the user in question (me) has been requested as reviewer.
-    - also change the checkmark displayed for PRs approved by me to the `👍` emoji.
-    - make the symbols displayed for these states configurable.
-- [x] chore: check to make sure we're mocking everything in tests, not pinging/fetching real data from real websites/APIs.
-- [x] improve: pull requests - sort and filter based on review state:
-    - personal review buckets with multi-select checkboxes
-    - ranked sorting by review request, update time, approval, and creation time
-    - persisted settings with explicit config.rb section overrides
 - [ ] feature: diff view - GitHub code review integration after the local review UX is usable.
 	- publish local reviews explicitly: general PR comments, inline line/range comments, review summaries, approval, and requests for changes.
 	- preserve explicit PR identity and reviewed commit IDs; validate anchors against GitHub's PR diff and recheck the PR head before submission.