EditorBuffer + Selection + EditorRegistry hold the daemon-side
active-file model (D-006 subsystem 'editor'). Active buffer
tracking means `clide insert "…"` and `clide replace-selection
"…"` target the UI's focused file without the caller supplying an
id. Mutations mark buffers dirty; editor.save writes back to disk
through the workspace root; events fire on every state change so
subscribers can mirror.
IPC surface matches CLAUDE.md's tier-2 list + the natural extras
(list, read, activate, set-selection, set-content, close). Tests
cover open-idempotence, insert at caret, replace-selection range
swap, dirty→save→clean round-trip, close picks a new active
buffer, out-of-range selection clamping.
69 core tests pass.
Co-Authored-By: Claude <noreply@anthropic.com>
jpmschweitzerandClaude
d32e8fdc17