Dora v0.30.3

Version 0.30.3

Date: 2026-06-29
Tag: v0.30.3
Range: v0.30.2..master

Why this release exists

v0.30.3 is a stability and polish release. Its headline change moves DuckDB
out of the main app binary into a separate helper process, and it fixes the
code editor failing to load in packaged builds.

Changes

• DuckDB helper process — DuckDB-backed local file queries (CSV, Parquet,
  JSON) now run in a separate helper process instead of being linked into the
  main app binary, keeping the heavy engine out of the core download.
• Editor loads reliably in release builds — Monaco and its fonts are now
  fully self-hosted instead of being fetched from a CDN that the packaged app's
  content-security policy blocked. Previously the SQL and ORM editors could hang
  on a blank loading state with mis-spaced text in release builds; syntax
  highlighting and the TypeScript LSP now work there too.
• Clearer connection errors — connection-refused errors now name the host
  that could not be reached instead of showing a generic message.
• Instant data-viewer edits — optimistic cell updates no longer flash back
  to the stale value before the save lands.
• Unified spinner — a single 12-blade radial spinner is now used everywhere
  a loading indicator appears.

Notes

• SSH tunnelling was reworked onto a pure-Rust library (russh), a transparent
  internal change.