The reply leg (Artemis -> Hera ack) that used to flow through common:messaging.4th's MSG-SEND/MSG-TICK now goes through kernel-Hermes's sk_hermes_send_one()/sk_hermes_drain_checkpoint() instead -- FORTH Hermes never sees a BLK-ATTACH-EVENT message again (SXXXIV.2's partition rule). The request leg was never real FORTH messaging traffic to begin with (a direct VM-EXEC, no type tag, forced by Hera's own inability to load common:messaging.4th), so it is untouched. New KH-BLK-ATTACH-SEND (repl.c) wraps sk_hermes_send_one(), reached from capsules/artemis/init.4th's HERA-BLK-ATTACH-REQ. Delivery reuses task 3.4's already-wired sk_hermes_drain_checkpoint(); BLK-ATTACH-ACK itself is unchanged, just reached by a different layer. SK_HERMES_MSG_TYPE_BLK_ATTACH deliberately reuses BLK-ATTACH-EVENT's own value (9) to document this as a cutover of the same message, not a new one. Two real bugs found on the way, both recorded in FABRIC-3.6.md's findings log: - A popped FORTH CREATE-buffer address was raw-cast to a host pointer instead of going through vm_ptr() -- silently read all-zero memory, no crash, no error, just a message that arrived and did nothing. Fixed; the rule and its exception (repl.c's own dev-addr is legitimately a raw pointer, formatted that way by its own pushing code) are written up for the next FORTH-facing C word. - A separate, genuine hang on the very first live exercise of this path, never reproduced across ten subsequent boots. Reported, not chased -- not blocking, per the task's own check being otherwise fully satisfied. Also found live: log_message() is invisible in this build's actual serial-log capture at every level -- settled on a single console_println in the real drain target instead, one line per real USB attach, not a hot-path. Final acceptance (logs/20260922-105501, -105758, -110304, disk images reset before each): dict_hash identical across all three architectures for every VM, zero UNKNOWN WORD, mkcapsule --lint clean, real ledger+stadium_conserved(Artemis)=true evidence on every boot. Co-Authored-By: Claude Sonnet 5 <noreply@anthropic.com>
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