DoE: MU-WAIT-ALL waits with 100 WAIT instead of busy-spinning; stopped first relaunch kept

The first amd64 relaunch (stopped by Captain Bob after 1h41m) showed Hera's
busy wait taking an equal CPU share and writing 43% of all heartbeat rows.
100 WAIT charges her 100 beats of work heat per iteration while executing
almost nothing, so workers get the CPU. cfg-0 check: 115 s vs ~210 s,
fail=0, 2/2 dead.

Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>

FABRIC-3.8.md

@@ -1371,3 +1371,21 @@ explicit instruction.
 
       **FABRIC-3.8's staged plan (A–I) is complete.** What's next is the per-ISA DoE relaunch
       (seed 12345, 3 reps) on the rebuilt driver, then the merge to master.
+- [x] **DoE relaunch, first attempt, stopped (2026-09-24).** Launched `12345 3 S" amd64" DOE` at
+      06:31 (`logs/20260924-062703/amd64/`, kept). Captain Bob stopped it at 08:12 (*"STOP and
+      hold"*) after a progress check showed the busy-wait cost.
+      - 173k heartbeat rows at ~31 rows/s, ~100k switches, 0 faults. Trial 1 (cfg 3,
+        heterogeneous) was still running, so no trial had finished.
+      - **Hera had written 75,117 rows against its last worker `mu0`'s 75,114.** `MU-WAIT-ALL`'s
+        busy loop took an equal share of the CPU as workers finished, half of it when one was
+        left. That's 43% of all rows so far, measuring nothing, and it roughly doubles each
+        trial's tail.
+      - **Fix (Captain Bob: "apply the WAIT fix and relaunch amd64"):** `MU-WAIT-ALL`'s loop body
+        is now `100 WAIT`.
+        - `WAIT` is the existing ordinary word that counts n beats (`vm_tick()` n times), so each
+          iteration charges Hera 100 beats of work heat while executing almost nothing, and
+          writes no rows.
+        - The decision then favours the workers at her next checkpoint.
+        - No yield word; capsule-only change.
+      - **Check** (`logs/20260924-081340/amd64/`, own boot, images reset after): a cfg-0 trial ran
+        in **115 s against ~210 s before**, `fail=0`, 2/2 dead.

capsules/BLOCK_MAP.md

@@ -1,5 +1,5 @@
 # Capsule Block Manifest — Auto-generated
-<!-- Generated by mkcapsule --manifest  2026-09-24T10:09:49Z -->
+<!-- Generated by mkcapsule --manifest  2026-09-24T12:13:16Z -->
 <!-- DO NOT EDIT — re-run mkcapsule --manifest to refresh.  -->
 <!-- Hand-written justifications and immutability notes live  -->
 <!-- in MANIFEST.md alongside this auto-generated index.      -->
@@ -25,7 +25,7 @@
 | `init-l8-volatile.4th` | 4810, 4811, 4812, 4813 | `0x98caabbbd92abac4` | yes |
 | `init.4th` | 2049, 2050, 2057 | `0xea038ba684c53443` | yes |
 | `lib.4th` | 4050 | `0x4b216635c359ef73` | yes |
-| `multiuser-doe.4th` | 5044, 5045, 5046, 5047, 5048, 5049, 5050, 5051, 5052, 5053, 5054, 5055 | `0x2b268decf6065736` | yes |
+| `multiuser-doe.4th` | 5044, 5045, 5046, 5047, 5048, 5049, 5050, 5051, 5052, 5053, 5054, 5055 | `0x97cd087a36d60cdc` | yes |
 | `per-isa-doe.4th` | 5117, 5119 | `0xab13edecabfd78db` | yes |
 | `sdk.4th` | 5109, 5110, 5111, 5112, 5113, 5114, 5115 | `0x008fdbbb62c94a3a` | yes |
 | `turtle.4th` | 5100, 5101, 5102, 5103, 5104, 5105, 5106, 5107, 5108 | `0x4d470418ca543365` | yes |
@@ -334,18 +334,18 @@
 | 5001 | `fabric.4th` | `0x9d9489cbeca4099b` | ok |
 | 5002 | `fabric.4th` | `0x9d9489cbeca4099b` | ok |
 | 5043 | `workload-calib1.4th` | `0x3b9f2d17b554fabc` | ok |
-| 5044 | `multiuser-doe.4th` | `0x2b268decf6065736` | ok |
-| 5045 | `multiuser-doe.4th` | `0x2b268decf6065736` | ok |
-| 5046 | `multiuser-doe.4th` | `0x2b268decf6065736` | ok |
-| 5047 | `multiuser-doe.4th` | `0x2b268decf6065736` | ok |
-| 5048 | `multiuser-doe.4th` | `0x2b268decf6065736` | ok |
-| 5049 | `multiuser-doe.4th` | `0x2b268decf6065736` | ok |
-| 5050 | `multiuser-doe.4th` | `0x2b268decf6065736` | ok |
-| 5051 | `multiuser-doe.4th` | `0x2b268decf6065736` | ok |
-| 5052 | `multiuser-doe.4th` | `0x2b268decf6065736` | ok |
-| 5053 | `multiuser-doe.4th` | `0x2b268decf6065736` | ok |
-| 5054 | `multiuser-doe.4th` | `0x2b268decf6065736` | ok |
-| 5055 | `multiuser-doe.4th` | `0x2b268decf6065736` | ok |
+| 5044 | `multiuser-doe.4th` | `0x97cd087a36d60cdc` | ok |
+| 5045 | `multiuser-doe.4th` | `0x97cd087a36d60cdc` | ok |
+| 5046 | `multiuser-doe.4th` | `0x97cd087a36d60cdc` | ok |
+| 5047 | `multiuser-doe.4th` | `0x97cd087a36d60cdc` | ok |
+| 5048 | `multiuser-doe.4th` | `0x97cd087a36d60cdc` | ok |
+| 5049 | `multiuser-doe.4th` | `0x97cd087a36d60cdc` | ok |
+| 5050 | `multiuser-doe.4th` | `0x97cd087a36d60cdc` | ok |
+| 5051 | `multiuser-doe.4th` | `0x97cd087a36d60cdc` | ok |
+| 5052 | `multiuser-doe.4th` | `0x97cd087a36d60cdc` | ok |
+| 5053 | `multiuser-doe.4th` | `0x97cd087a36d60cdc` | ok |
+| 5054 | `multiuser-doe.4th` | `0x97cd087a36d60cdc` | ok |
+| 5055 | `multiuser-doe.4th` | `0x97cd087a36d60cdc` | ok |
 | 5056 | `workload-5-lite.4th` | `0x05c651e140ef667b` | ok |
 | 5057 | `workload-5-lite.4th` | `0x05c651e140ef667b` | ok |
 | 5058 | `workload-1-lite.4th` | `0xbc13567fea25063a` | ok |

capsules/multiuser-doe.4th

@@ -120,7 +120,7 @@ Block 5052
     I MU-SEND-WORKER
   LOOP ;
 : MU-WAIT-ALL ( -- )
-  BEGIN MU-DONE-COUNT @ MU-NW @ < WHILE REPEAT ;
+  BEGIN MU-DONE-COUNT @ MU-NW @ < WHILE 100 WAIT REPEAT ;
 
 Block 5053
 : MU-KILL-ALL ( -- )