Prevented compiled binaries from failing on startup because of a circular session schema dependency

Improvements

• CoreRenamed the compaction setting to preserve_recent_tokens for the budget that keeps recent turns verbatim.
• CorePreserved concurrent edits to the same file instead of letting parallel edits overwrite each other.
• CoreFixed managed installs on Windows and added bundled ripgrep support for Windows ARM64.
• CoreAdded NVIDIA as a built-in provider option, including connection docs and required attribution headers.@anniesurla
• CoreKept recent conversation turns verbatim during session compaction so follow-up work keeps more local context.
• CoreFell back to summarizing the full conversation when preserved recent turns include too much media to fit safely.
• DesktopReduced loading flicker when opening projects and bringing prompt controls online.
• DesktopAdded a separate terminal font setting and bundled JetBrainsMono Nerd Font Mono.