C5b confirms C5a: pinning the AI client seeds to an earlier run's makes the creation
turn reproducible. Three processes, each drawing its own three seeds, all pinned to
C3's, all producing d59bb9f2... with identical gates (including player 512's target
282, the value no other run has produced) and identical element records.
The only word that differs anywhere across the three is word 3 of list 23's unnamed
Population body. Three runs with byte-identical autosaves cannot differ in a word the
applier reads, so that word is noise -- localised using the pinned pair as an
instrument, which is what a control on a k>1 workload is for.
Two agreeing is a 1/k coincidence; three is 1/k^2.
Co-Authored-By: Claude Opus 5 (1M context) <noreply@anthropic.com>
Claude-Session: https://claude.ai/code/session_01ARBgSooAfokKUy6wKUKEyZ
Canonical pair turn2->turn3: the complete block set, the three heap payloads no
previous capture could read (route [272], list-10 [1728], the 24-byte Population
body), the three AI client seeds, and both output autosaves -- byte-identical to the
published oracle AND to this lane's own hooks=off control, so the stream and the save
come from the same run and the instrument did not change the turn it recorded.
Creation turn turn1->turn2: three runs. Pinning the AI client seeds to the values an
earlier run observed made a DIFFERENT process reproduce that run's block -- including
the research pick that varies -- and its autosave byte for byte. The workload three
lanes could not reproduce is reproducible given the seeds.
Two corrections to lane L4's list-23 reading (no trailing int; the body is not
turn-dependent) and one to my own list-5 record, the latter found by lane RB while
consuming this capture.
Format: JSON (raw words are ground truth, decoded is a typing) plus lane RB's own .tcb
grammar with the heap payloads filled in, so RB's reader consumes it unchanged.
Co-Authored-By: Claude Opus 5 (1M context) <noreply@anthropic.com>
Claude-Session: https://claude.ai/code/session_01ARBgSooAfokKUy6wKUKEyZ
Produces the game states several board rows were blocked on, and reads each
one back out of the save before claiming it.
- CD/TurnCommands_v5 decoded: three saves with issued orders (research target,
research boost, build orders, system rates, colonize, fleet move). Layout in
SAVE_FORMAT.md section 11; ids cross-checked against the same file's Sys/Flt.
- Waypoint type 3 (NodeRoute) now has 16 instances in one save and the player's
own fleet is a mover in two. Type 2 is shown NOT to be produced by a Move
order for either node-drive race (Zuul and Human both emit type 3).
- research_roll_pending true at load in two saves; the ProcessTurn gate constant
at 0x00a2c788 is a float 0.5, so the flag survives into ProcessResearch only
while progress/cost <= 0.5 at the start of the turn.
- Budget tail: construction and a large maintenance are live; Nexp is empty in
all 11 saves and the 1.8 UI has no expense slider, so slot 12 looks dead.
VM140 restored to the original 8-file SavedGames set (autosaves byte-identical)
and left at the main menu; VM140 row set FREE.
Lane P wrote the expected numbers into sots-engine docs/P-events-wiring.md §4 before
this run existed. Every one held.
First End Turn (ref-turn2 -> Launch -> End Turn, shim.cfg.recapb3 unchanged, build
eventlive-dd38117-20260908T0916Z, main dd38117 with no source change): 3 calls, 3
compared, 0 divergent, tracecmp exit 0 — where lane R's run exited 1 on
side.events.after.v.next_id orig=4 ours=3. Call 0 read turn=3,
events_turn_bucket_exists=true, events_next_id_in=3, events_in_turn_bucket=1,
events_dedup_risk=0, no events_scan_truncated, next_id 3->4 on both sides,
turns/turns_bytes 2/48 unchanged, node[144].progress 2879->5768, flag 1->2, rng
identical — the whole predicted list.
Five End Turns: exit 1 with 2 divergent calls instead of 3, each short by exactly 1
(next_id orig 7 ours 6, orig 12 ours 11) = the deliberately unmodelled
EVENT_TECHS_UNLOCKED. A 0-divergence result there would have been suspicious.
sizeof(Game::ObservedTech) = 44 measured live: observed_techs.bytes grew by exactly
44 on both completion calls (440->484, 484->528), confirming lane X's static pin
behaviourally. Non-researching players measured 880 = 20 x 44 and never moved.
One deviation from lane R, and it is a workload effect, not a defect: rng diverged on
call 9 because the completed tech had research_roll_pending set and the
OnTechResearched callback drew one word ours does not (left 374 vs 375). Lane R's
"RNG matched 15 of 15" was workload luck; the honest statement is that the rng region
matches on every call that does not complete a roll-triggering tech.
Zuul double roll CLOSED. No species-5 save existed, so this lane made one: a custom
game with only Zuul in the Available Species pool, 4 End Turns under the same compare
config. 8 calls, 8 compared, 0 divergent, exit 0; all four researching calls have
species=5 and advance the generator by two, not one (left 540->538, 522->520,
504->502, 485->483), and ours reproduced every post-state bit-for-bit. Save added as
verify/results/saves/zuul-turn5-species5.sav.
End-Turn oracle byte-identical to lane R's on the first turn, so none of this
perturbs the game. clean_room_check OK and host ctest 33/33, run as separate commands.
VM140 restored to the recap build at the main menu and released.
