Turn-attractor rebuilt on real messaging: two live defects found and fixed before the full campaign (FABRIC-3.md §XXI)

Rewrote EXEC-STD79-DOE-CD's dispatch to coordinate via MSG-SEND/
MSG-TICK instead of blocking VM-EXEC, now that Hera can genuinely
message (§XX). RUN-TEST/EXEC-STD79-DOE (the serialized baseline) are
untouched, kept as a byte-for-byte-reproducible historical comparison
point.

A small 2-identity smoke test before any multi-architecture
commitment caught two real defects the design alone didn't predict:

1. Absolute VM-HEAT can't produce fine-grained interleaving -- a
   fresh identity starts at heat=0 against Hera's ~62000+, a gap no
   1..24 divisor closes, so priority locked onto whichever identity
   had executed least, for its entire campaign. Fixed with BASE-HEAT:
   each identity's heat is snapshotted once at campaign start, and
   priority is computed from heat gained *this campaign*, not
   lifetime heat.

2. Single-test-per-message granularity silently drops most of a
   campaign's data: MSG-SEND no-ops on MSG-ALLOC failure, and the
   turn bookkeeping advanced regardless, so rows looked complete
   while missing most of their tests. A live reservoir probe showed
   Hera's own STADIUM-RES@ draining ~725/cycle with no
   replenishment observed -- a 648-send full campaign would exhaust
   it almost immediately. Fixed by dispatching a whole rep (24 tests,
   one concatenated command, measured 442 bytes, well under
   VM-EXEC's 1025-byte cap) per message instead -- 27 sends for a
   full campaign, not 648.

Re-verified after both fixes: 99/99 expected test outputs present,
zero drops, zero faults, genuine rep-level interleaving instead of
either the serialized baseline's fixed order or the first cut's
72-test lock-in.

Co-Authored-By: Claude Sonnet 5 <noreply@anthropic.com>
Claude-Session: https://claude.ai/code/session_01EXieurDfDSsDFdnSyusuWo

logs/20260912-160028/riscv64/qemu-riscv64-20260912-160028.log

@@ -0,0 +1,66 @@
+
+OpenSBI v1.8
+   ____                    _____ ____ _____
+  / __ \                  / ____|  _ \_   _|
+ | |  | |_ __   ___ _ __ | (___ | |_) || |
+ | |  | | '_ \ / _ \ '_ \ \___ \|  _ < | |
+ | |__| | |_) |  __/ | | |____) | |_) || |_
+  \____/| .__/ \___|_| |_|_____/|____/_____|
+        | |
+        |_|
+
+Platform Name               : riscv-virtio,qemu
+Platform Features           : medeleg
+Platform HART Count         : 1
+Platform HART Protection    : pmp
+Platform IPI Device         : aclint-mswi
+Platform Timer Device       : aclint-mtimer @ 10000000Hz
+Platform Console Device     : uart8250
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+Platform Reboot Device      : syscon-reboot
+Platform Shutdown Device    : syscon-poweroff
+Platform Suspend Device     : ---
+Platform CPPC Device        : ---
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+Runtime SBI Version         : 3.0
+Standard SBI Extensions     : ipi,pmu,srst,sse,hsm,rfnc,fwft,time,base,legacy,dbcn,dbtr
+Experimental SBI Extensions : none
+
+Domain0 Name                : root
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+Domain0 Region07            : 0x0000000000000000-0xffffffffffffffff M: () S/U: (R,W,X)
+Domain0 Next Address        : 0x0000000020000000
+Domain0 Next Arg1           : 0x00000000bfe00000
+Domain0 Next Mode           : S-mode
+Domain0 SysReset            : yes
+Domain0 SysSuspend          : yes
+
+Boot HART ID                : 0
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+Boot HART Debug Triggers    : 2 triggers
+Boot HART MIDELEG           : 0x0000000000001666
+Boot HART MEDELEG           : 0x0000000000f4b509
+[=3hRISC-V EDK2 firmware version 2025.11-3ubuntu7
+Press ESCAPE within 5 seconds for boot options