fix: preserve streamed output on execution errors

chore: bump version to v0.6.1

chore: bunch of bug fixes

feat: improve Koder runtime workflows

chore: bump dependencies

chore: bump version to 0.5.2

feat: add initial support for sandbox

feat: agent harness

fix: fix the antigravity auth issues and cleanup codes

1) Refered some logic from opencode-antigravity-auth for how to handle
   antigravity oauth correctly.
2) Split the large oauth file into modules and move into their own
   component

chore: bump depdencies and code cleanup