{"version":"2.1.224","anchor":"forked-sessions-are-told-once-that-their-twin-is-still-runni","canonical_anchor":"forked-sessions-are-told-once-that-their-twin-is-still-runni","heading":"Forked sessions are told once that their twin is still running","tier":"soon","area":"Cross-Session Messaging","scope":null,"heads_up":null,"url":"https:\/\/changelogs.core-directive.com\/v\/2.1.224\/e\/forked-sessions-are-told-once-that-their-twin-is-still-runni","release_url":"https:\/\/changelogs.core-directive.com\/v\/2.1.224","markdown":"### Forked sessions are told once that their twin is still running\n\nA forked session can be told once that its twin is still live and how to reach it.\n\n**What**\n\nWhen a session is detected as a copy of another that is still live, a one-time note is queued for the model explaining that history up to the fork point is shared, that the two have since diverged, and how to find and message the sibling. Requires the `tengu_harbor_kite` gate (fallback false) or `CLAUDE_CODE_HARBOR_KITE`, and is skipped on Windows.\n\n**Details**\n\n- Suppresses itself if the note is already in the conversation or already queued.\n- Reported as `fork_source_note`, with a `parent_gone` reason when the original session cannot be resolved.\n\n**Evidence**\n\n`This session began as a fork (copy) of another session that is still running`\n\n- Flag `tengu_harbor_kite`: Off by default, switched on for this account (read for one account on one subscription tier against v2.1.224; this account: on, anonymous baseline: on, compiled default: off) These values were read against a different version of Claude Code, so treat them as the nearest reading available instead of one taken on this release.\n- Area: Cross-Session Messaging\n- Names: `CLAUDE_CODE_HARBOR_KITE`\n- Tier: Nothing to try yet\n- Useful: 2\/5\n- Signal: 4\/5\n- Present in the build but not switched on"}