## What changed
- Move migration detection, import orchestration, models, and reporting from
`codex-app-server` into `codex-external-agent-migration`.
- Keep app-server protocol conversion in a dedicated boundary module.
- Organize source-specific configuration, sessions, hooks, plugins, commands,
subagents, and memory handling behind shared migration adapters.
- Relocate and split the migration tests alongside the extracted service.
GitOrigin-RevId: 3378ec2064806a28136d6ac98664ca1d75414a4e
## What changed
- Detect and import supported Cursor settings, sandbox permissions, MCP servers,
project instructions, hooks, agents, commands, plugins, and recent chat
sessions.
- Update the `/import` flow to check Claude Code and Cursor, prompting for a
source when both have importable data.
- Add `migrationSource` to the app-server detect and import requests so each
operation uses the selected adapter, while retaining `source` for import
attribution and backwards compatibility.
## Testing
- Add coverage for Cursor config conversion, hooks, plugins, session discovery
and conversion, app-server imports, and TUI source selection.
GitOrigin-RevId: a65a1511b6c1c2f9e3e0cfe4f816bb435807282e