v1.2.4

What's Changed

• fix: Release retained Hub index memory by @xingkaixin in #676
• perf: Reduce Hub snapshot input copies by @xingkaixin in #677
• perf: Reuse retained pages before loading lists by @xingkaixin in #678
• perf: Scope analytics reads and dashboard requests by @xingkaixin in #679
• fix(search): Match continuous Chinese substrings by @xingkaixin in #680
• feat(search): Open results at matched messages by @xingkaixin in #681
• feat(search): Explain scope and result limits by @xingkaixin in #682
• feat(session): Clarify source and resume location by @xingkaixin in #683
• perf(session): Load long transcripts in pages by @xingkaixin in #684
• perf(web): Reuse unchanged timeline summaries by @xingkaixin in #685
• perf(storage): Preserve unchanged message rows by @xingkaixin in #686
• perf(sync): Stream Worker snapshot serialization by @xingkaixin in #687
• perf(codex): Avoid repeated usage scans by @xingkaixin in #688
• perf(search): Defer unused session snippets by @xingkaixin in #689
• feat(web): Improve session loading controls by @xingkaixin in #690
• chore: Prepare v1.2.4 release by @xingkaixin in #691

Full Changelog: v1.2.3...v1.2.4