Threadline 1.0.0

Threadline 1.0.0 is the first stable release of the local-first macOS conversation library.

Highlights:

• Incremental, coalesced Codex and Claude ingestion with a five-minute fallback.
• Single-flight reconciliation with thermal safeguards and automatic retry backoff.
• Incremental SQLite and FTS updates, compact acknowledged outbox payloads, and idle integrity maintenance.
• Authenticated folder-sync heads and bounded no-op inventory checks.
• Bounded UI caches for provider icons and Markdown rendering.
• System SQLite linkage and packaging checks that reject external Homebrew dependencies.

The Apple Silicon app is locally signed, not Developer ID signed, and neither the app nor DMG is notarized. Verify the accompanying SHA-256 file before installation.