A small maintenance release.
Fixed
- Long sessions no longer grow memory with every tab switch: the Back/Forward history is now capped (it previously kept an entry per switch, forever).
- The About panel's "Release notes" link actually opens the release notes; the placeholder Licenses and Privacy links are gone until they have real destinations.
Under the hood
- A performance-budget suite now guards the app's speed: typing latency, vault scan, search latency, memory footprint — measured against a 4GB-machine budget (see PERF.md).
- A search-quality eval (judged queries, Recall@10/MRR) baselines our ranking against BM25 — groundwork for typo-tolerant and semantic search.
Existing installs will offer this update automatically.