feat(change-stream): ExpiryIndex for Sqlite backend

[aldy505]

We need a way for querying the expired objects. This is it!

[codecov]

Codecov Report

❌ Patch coverage is 98.76543% with 5 lines in your changes missing coverage. Please review.
✅ Project coverage is 91.48%. Comparing base (81dbdc8) to head (2e5604a).
⚠️ Report is 6 commits behind head on main.

Files with missing lines	Patch %	Lines
...vice/src/change_stream/garbage_collector_sqlite.rs	98.76%	5 Missing ⚠️

Additional details and impacted files

@@            Coverage Diff             @@
##             main     #690      +/-   ##
==========================================
+ Coverage   91.33%   91.48%   +0.14%     
==========================================
  Files         117      118       +1     
  Lines       24171    24614     +443     
==========================================
+ Hits        22077    22517     +440     
- Misses       2094     2097       +3     

Components	Coverage Δ
Rust Backend	94.91% <98.76%> (+0.08%)	⬆️
Rust Client	81.70% <ø> (ø)
Python Client	93.81% <ø> (ø)

☔ View full report in Codecov by Harness.
📢 Have feedback on the report? Share it here.

🚀 New features to boost your workflow:

• ❄️ Test Analytics: Detect flaky tests, report on failures, and find test suite problems.

[cursor]

Cursor Bugbot has reviewed your changes and found 1 potential issue.

^{❌ Bugbot Autofix is OFF. To automatically fix reported issues with cloud agents, enable autofix in the Cursor dashboard.}

^{Reviewed by Cursor Bugbot for commit 2e5604a. Configure here.}

[cursor]

Expired listing panics on bad ids

Medium Severity

list_expired calls ObjectId::from_storage_path and unwraps. One stored path that does not round-trip — an empty key, empty usecase, or a row written outside this code — panics the whole listing instead of returning the Result the method already uses.

 

^{Reviewed by Cursor Bugbot for commit 2e5604a. Configure here.}