# Context Decomposition for Invocation and Workspace Scope

- **Status**: Todo
- **Kind**: Feature
- **Authors**: Jean Mertz <git@jeanmertz.com>
- **Date**: 2026-09-28
- **Implements**: 113
- **Label**: type=tracking

Tracking ticket for [RFD 113].

## Implementation plan

- **Introduce the two types and migrate plugin dispatch**: Adds `CliCtx` and
  `WorkspaceCtx` with `Ctx` as a shell holding both.
  Resolves delegated-turn configuration through `ConfigPipeline` per checkout,
  deletes `Ctx::swap_config`, keys MCP server instances by
  server/configuration/spawn directory with per-turn leasing (deleting
  `configure_active_mcp_servers`, `set_servers`, `McpServerScope`), warns
  instead of silently skipping misdirected background tasks, and migrates
  `run_external`, `run_plugin`, `message_loop`, and plugin request handlers to
  the two halves.
  Mergeable independently; unblocks multi-workspace addressing.
- **Migrate remaining commands off the shell**: Moves every other command from
  the `Ctx` shell to `CliCtx`/`WorkspaceCtx`, one group at a time, then deletes
  the shell.
  Depends on Phase 1; each command group is independently mergeable.
- **Record the inventory and enact the placements it forces**: Documents the
  application/frontend capability split under `docs/architecture/`, consolidates
  query-draft handling into the storage layer (one path resolution shared by CLI
  and FFI, preserving both conflict policies), and removes `cfg` from
  `PluginToHost::Query` and `list_configs` from the protocol surface (still
  deserializable, but answered with a correlated error so no turn starts under a
  dropped config selection).
  Depends on Phase 1; each item is independently mergeable and is its own
  behavior-change review.

[RFD 113]: ../rfd/113-context-decomposition-for-invocation-and-workspace-scope.md