Oxide v0.0.22

Reliability + opencode-aligned fixes: agent now actually edits (loop nudge + edit tool + anti-laziness prompt), can't hang (shell/MCP/web timeouts), auto context window per model, stays in the selected repo, deleting a chat sticks, readable light-theme tool output, no composer double-submit, copy button on tool output, sidebar title tooltips. Install: open dmg → Applications → xattr -dr com.apple.quarantine.