Full three-arch DoE campaign, post-fix — amd64/aarch64/riscv64 all clean

Standard L8-DOE acceptance run on all three architectures following the
item 4.6 quota-ordering fix and aarch64 SMC->HVC BYE-crash fix. All
three: 30/30 Artemis stress-campaign reps PASS, clean BYE exit (no
exception), full DoE CSV captured (~78-79k rows each).

riscv64's first attempt this session was killed mid-run by an
unexplained external SIGTERM (see memory note
project_unexplained_qemu_sigterm_20260818, cause not yet identified);
relaunched and completed clean.

Co-Authored-By: Claude Sonnet 5 <noreply@anthropic.com>

capsules/BLOCK_MAP.md

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 # Capsule Block Manifest — Auto-generated
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+<!-- Generated by mkcapsule --manifest  2026-08-19T00:14:53Z -->
 <!-- DO NOT EDIT — re-run mkcapsule --manifest to refresh.  -->
 <!-- Hand-written justifications and immutability notes live  -->
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