v2.2.0

Highlights

Gondolin Sandbox Maturity

• Workspace size limits (SizeLimitProvider) to cap /workspace size
• Larger VM image with pre-installed tools and uv venv support
• Chat history mounted as read-only /chat_history in sandbox VMs
• Updated @earendil-works/gondolin to 0.5.0

SQLite → File-based Migration

• Chat history migrated from SQLite to per-arc JSONL files
• Chronicle system migrated from SQLite to file-based markdown
• Removed unused sqlite/sqlite3 dependencies
• Added chat history migration script and rewrote cost-report for JSONL

Web & Vision Fixes

• Vision fallback race condition resolved + room message annotation
• Network error details surfaced instead of opaque "fetch failed"
• Image handling steered purely by HEAD content-type (removed looksLikeImageUrl)
• Fall through to text when image-like URL serves non-image content

Other Improvements

• arc field added to RoomMessage, renamed fsSafeArc to buildArc
• Cost report properly attributes costs to triggering users via run field
• generate_image default timeout bumped from 60s to 120s
• Quest system removed (deferred feature, never activated)
• Artifact viewer: replaced hand-rolled markdown with marked + highlight.js
• HTML artifacts rendered in fullpage iframe
• Various Gondolin reliability fixes (console capture, health checks, op timeouts)