cairn-resume

/cairn:cairn-resume

You are resuming a Cairn task in a fresh-context session. The operator just /cleared mid-task and pasted this command to rebuild state. The argument is the task_id (format: TSK-<slug>-<7-hex>) or omitted (defaults to the most-recently-touched active task).

Step 1 — preload tools

ToolSearch(select:mcp__plugin_cairn_cairn__cairn_resume,mcp__plugin_cairn_cairn__cairn_mission_resume,mcp__plugin_cairn_cairn__cairn_in_scope,mcp__plugin_cairn_cairn__cairn_decision_get,mcp__plugin_cairn_cairn__cairn_invariant_get)

Step 1.5 — mission frame (when an active mission exists)

Call cairn_mission_resume({}) first. If active: true, render the returned body verbatim BEFORE the task resume block — it's the mission-level context (cursor phase + exit_criteria, last 3 graduated tasks across the mission, in-flight tasks under the cursor, the spec.md slice for the current phase, next 1-2 upcoming phases). Combined with the task frame from Step 2, total prime budget is ≤2500 tokens.

If active: false, skip this step entirely — the operator is on a non-mission task and the task journal alone primes the session.

Step 2 — fetch the resume payload

Call cairn_resume. If the operator passed a task_id argument, pass it through; otherwise omit and let Cairn pick the most-recent active task:

cairn_resume({ task_id: "<task_id>" })  // or {} if no arg supplied

The tool returns:

{
  ok: true,
  task_id: "TSK-…",
  scope: "active" | "done",      // see Step 2.5
  completed_at: "<ISO-8601>" | null,
  title: "<spec H1>",
  goal: "<spec ## Goal section>",
  in_scope_decisions: ["DEC-…"],
  in_scope_invariants: ["INV-…"],
  target_path_globs: ["…"],
  recent_entries: [
    { ts, session_id, summary, next_step?, files_touched?, decisions_loaded? }
  ],
  next_step: "<last entry's next_step or null>",
  total_entries: <number>,
  files_touched: ["<repo-rel path>", …]   // deduplicated union across recent_entries (most-recent first)
}