Scoping the workload-into-factorial design's placement-mode factor led to a real architectural improvement: rather than EXEC-ing a workload capsule into an already-running, ACL-locked identity's own persistent dictionary (filesystem-shaped, doesn't dodge the block- collision exposure just traced in §XXIV), a workload now runs as a fresh ephemeral child VM, BIRTH'd per trial and reaped after -- matching the project's own stated principle of automanagement over imposed policy. CAPSULE-BIRTH already passes vm->stadium_vm_id (who is birthing this VM) as the new child's parent, not a hardcoded Hera constant, confirmed by reading the C -- so a workload trial genuinely inherits the specific identity's own lineage when that identity does the birthing. Which surfaced a real premise: only Hera could call BIRTH/ CAPSULE-BIRTH at all (registered only in register_mama_forth_words(), confirmed directly, not part of the earlier §XX messaging-symmetry fix which deliberately kept this as one of her remaining privileges). Extended symmetrically now, agreed explicitly before touching code: - mama_forth_words.c: BIRTH and CAPSULE-BIRTH added to register_child_vm_words(), matching §XX's own pattern. - acl-std79.4th: ' BIRTH , ' CAPSULE-BIRTH , added to ACL-STD79-LIST (new block 4048) -- a deliberate, explicit, named exception to the lockdown's own "standard words only" guarantee, not a silent one. Symmetric registration alone can't weaken any lockdown on its own: ACL-LOCKDOWN-STD79 is allowlist-based, deny-by-default, so a newly registered word is auto-denied there unless explicitly added. Verified: clean build on all 3 architectures, zero new warnings. Hera's own dict_hash unchanged (expected); Hermes/Artemis show the same new dict_hash on all 3 architectures. Live-tested against a real attached std79-locked identity: CAPSULE-BIRTH executes correctly (returns vm_uuid_none() for a deliberately out-of-range capsule-id, zero fault, zero ACL denial). Found, and explicitly stopped short of fixing, a separate pre- existing gap while verifying the above: MSG-STATUS and MSG-K (messaging.4th words, not on the std79 allowlist) execute for a locked identity instead of being denied. ACL-LOCKDOWN-STD79 is confirmed to actually run; something more specific isn't reaching messaging.4th's dictionary entries. Root cause not traced -- needs its own investigation into vm_core.c's dictionary-link mechanics and whichever capsule actually loads messaging for these identities. Co-Authored-By: Claude Sonnet 5 <noreply@anthropic.com> Claude-Session: https://claude.ai/code/session_01EXieurDfDSsDFdnSyusuWo
capsules/
FORTH personality files loaded by the VM at boot. A capsule is an immutable, content-addressed payload; its XXHash64 hash is its identity. Any mutation changes the hash and the birth protocol rejects the image.
Key files
| File | Type | Purpose |
|---|---|---|
init.4th |
(m) MAMA_INIT |
Default Mama VM personality — loaded at LBN 2048 |
ACL.4th |
user | Word-level ACL system; self-activating at boot |
zuse.4th |
user | Bootstrap superuser; loaded by ACL.4th |
doe.4th |
user | DoE workload words (EXEC-DOE) — opt-in |
workload-0.4th … workload-9.4th |
(p) |
Numbered personality variants |
init-l8-*.4th |
(p) |
L8 Jacquard mode variants (stable/volatile/diverse/temporal/transition/omni) |
hermes/init.4th |
(p) |
Hermes baby VM personality |
artemis/init.4th |
(p) |
Artemis baby VM personality |
Block namespace
Block ranges are shared across all loaded capsules — collisions cause silent word-definition overwrites.
| Range | Owner |
|---|---|
| 2048–2099 | init.4th |
| 2100–2199 | doe.4th |
| 3000–3999 | workload capsules |
| 4000+ | user-defined (ACL.4th, zuse.4th, …) |
Each block is limited to 1024 bytes. Verify with wc -c before committing.
See also
experiments/bare_metal/README.md— DoE protocols and block namespace rulesdocs/03-architecture/word-acl/DESIGN.md— ACL system designtools/mkcapsule.c— assembles capsules intocapsule_generated.c- Project root