{
 "tm": "1RB0LD_0RC---_0LD0RF_1LE1LD_0LA0RD_0RB1RA",
 "bucket_reason": "Stage 2 (closed tape language, funded 2026-10-14) ended parked: no verified decider works and the free-parameter shape set does not close. The next route needs arithmetic again.",
 "question": "Park 693 and its twins 528, 310, 548, or fund a third stage that fixes the explorer's digit bookkeeping and adds a counter clock?",
 "options": [
  {
   "id": "park",
   "label": "Park all four",
   "consequence": "Costs nothing. The explorer, its validator, the decider driver and proof.md section 8 stay in 693's folder for a later attempt."
  },
  {
   "id": "fund_clock",
   "label": "Fund stage 3: counter with a clock",
   "consequence": "About 2 h, 1-2 light processes. Make the digit bookkeeping faithful on the exact replay (scripts/ctl_replay.py), then add a counter clock (a D-digit counter overflows within 2^D increments) and rerun the closure. Stop rule: park if the shape set still does not close."
  }
 ],
 "recommended": "park",
 "rationale": [
  "~190 runs of busycoq's verified CTL deciders: none decides 693.",
  "Explorer sound, follows the orbit; family grows (free counter length, digit bookkeeping drift).",
  "Closing needs D ~ log2(s) after a bookkeeping fix: uncertain."
 ],
 "evidence": [
  {
   "kind": "fact",
   "text": "Shape set not closed after millions of shapes (K = 64); 0 halting steps; explorer checked on ~18,000 concrete steps and 947 orbit turns.",
   "href": "proof.md"
  },
  {
   "kind": "fact",
   "text": "Exact replay of the orbit: real counter digits end up as plain cells (step 1,642,188), so the representation drifts.",
   "href": "notes.md"
  },
  {
   "kind": "fact",
   "text": "Decider sweep: 0 true in ~190 runs.",
   "href": "work/ctl_sweep_B.jsonl"
  }
 ],
 "effort_if_yes": "One stage (about 2 h) for the clocked explorer; a closed set would still need a readable case list and a formal version in further stages.",
 "updated": "2026-10-14",
 "answer": {
  "option": "fund_clock",
  "note": "",
  "date": "2026-10-14"
 }
}