diff --git a/.yoi/tickets/open/20260607-062902-narrow-yoi-worktree-sparse-exclusions/item.md b/.yoi/tickets/open/20260607-062902-narrow-yoi-worktree-sparse-exclusions/item.md
index 50a33d93..874e0c98 100644
--- a/.yoi/tickets/open/20260607-062902-narrow-yoi-worktree-sparse-exclusions/item.md
+++ b/.yoi/tickets/open/20260607-062902-narrow-yoi-worktree-sparse-exclusions/item.md
@@ -6,9 +6,9 @@ status: open
 kind: task
 priority: P1
 labels: [worktree, workflow, memory, ticket, orchestration]
-workflow_state: intake
+workflow_state: ready
 created_at: 2026-06-07T06:29:02Z
-updated_at: 2026-06-07T06:29:02Z
+updated_at: 2026-06-07T07:14:31Z
 assignee: null
 legacy_ticket: null
 ---
diff --git a/.yoi/tickets/open/20260607-062902-narrow-yoi-worktree-sparse-exclusions/thread.md b/.yoi/tickets/open/20260607-062902-narrow-yoi-worktree-sparse-exclusions/thread.md
index 98ecb8af..18d87164 100644
--- a/.yoi/tickets/open/20260607-062902-narrow-yoi-worktree-sparse-exclusions/thread.md
+++ b/.yoi/tickets/open/20260607-062902-narrow-yoi-worktree-sparse-exclusions/thread.md
@@ -4,4 +4,56 @@
 
 Created by LocalTicketBackend create.
 
+---
+
+<!-- event: plan author: hare at: 2026-06-07T07:14:24Z -->
+
+## Plan
+
+## Preflight / implementation intent
+
+Classification: implementation-ready and should run before `memory-root-uses-yoi-memory-marker`.
+
+Intent:
+- Stop treating child worktrees as code-only surfaces that exclude all `.yoi/**`.
+- Keep Yoi project records visible in child worktrees where useful: Tickets, workflows, curated Knowledge, and project config.
+- Continue excluding generated/personal/local runtime state, especially `.yoi/memory`.
+
+Updated decision from discussion:
+- `.yoi` remains the project records/workspace marker.
+- `.yoi/memory` is the repo-local memory marker and should not be copied into child worktrees.
+- The worktree workflow should stop saying child worktrees must not contain `.yoi`; it should instead define which `.yoi` subpaths are included/excluded and how Ticket edits are split between branch-local artifacts and main-workspace final records.
+
+Implementation direction:
+- Update `.yoi/workflow/worktree-workflow.md`:
+  - replace `!/.yoi/**` sparse rules with narrower exclusions for `.yoi/memory`, logs, locks, local/runtime/secret-like paths;
+  - update validation from `test ! -e .../.yoi` to checks that memory/local paths are absent and project records are allowed;
+  - update child-worktree prohibitions from “no `.yoi`” to “no generated memory/local/runtime files”;
+  - define Ticket edit policy: branch-local artifacts/dossiers may live in child worktree; active orchestration progress and final review/close remain main-workspace responsibilities unless explicitly designed otherwise.
+- Update `.yoi/workflow/multi-agent-workflow.md` where it still says `.yoi` is excluded or that Ticket/workflow/docs records are always main-workspace-only.
+- Update generated role guidance/tests if code still says child worktrees exclude `.yoi` broadly.
+- Keep the change focused on worktree sparse/workflow policy; memory root detection changes belong to `memory-root-uses-yoi-memory-marker`.
+
+Validation:
+- Run focused tests for any crate touched.
+- Run `target/debug/yoi ticket doctor`, `cargo fmt --check`, and `git diff --check`.
+- If only workflow/docs change, no broad cargo tests are required beyond relevant prompt/guidance tests if touched.
+
+---
+
+<!-- event: intake_summary author: INSOMNIA at: 2026-06-07T07:14:31Z -->
+
+## Intake summary
+
+Implementation-ready: keep `.yoi` as the project records marker, stop excluding all `.yoi/**` from child worktrees, include tracked project records, exclude `.yoi/memory`/logs/local/runtime files, and update workflow/role guidance plus Ticket edit policy. Memory root detection remains a separate follow-up ticket.
+
+---
+
+<!-- event: state_changed author: INSOMNIA at: 2026-06-07T07:14:31Z from: intake to: ready reason: intake_ready field: workflow_state -->
+
+## State changed
+
+Ticket intake complete; workflow_state intake -> ready.
+
+
 ---