Adds the identity columns HB-ON's existing per-tick CSV logger (doe_log_tick_row(), doe_log.c) was missing. Previously every column described *a* VM's state each row, but nothing said which VM emitted it -- concurrent VMs' rows were indistinguishable by source. Two new first columns, vm_name and vm_id_hex, resolved via a reverse lookup on vm->stadium_vm_id (capsule_vm_registry_get()). Real bug found and fixed while building this: the freestanding snprintf here silently prints the literal format string instead of substituting for %016llx (width+ll+hex unsupported) -- caught by reading the actual emitted row, not assumed to work. Replaced with a hand-rolled hex nibble-table loop, the same idiom vm_uuid_format()/ MINT-SCRATCH-EMIT already use. Corrects FABRIC-3.md's own prior "still not started: CSV driver" framing: no bespoke CSV emitter is needed for the multiuser DoE at all -- this per-tick logger already exists, fires automatically inside every VM's own execution loop, and just needed HB-ON plus these identity columns to be usable for concurrent workers. Also corrects doe_log.h's own stale doc comment claiming g_doe_log_enabled defaults to 1 -- doe_log.c's own source is authoritative: 0, off by default, matching the HB-ON/HB-OFF naming. One real, honest limitation recorded rather than smoothed over: vm_name reads blank for any tick captured during a WORKER-BIRTH'd capsule's own self-execution at birth time, since capsule_birth_baby() runs that work (and its heartbeat ticks) before the registry name can be set. vm_id_hex is unaffected (reads directly from vm->stadium_vm_id) and still uniquely disambiguates every row -- confirmed live: a blank-name row's own vm_id_hex matched its later PARITY:KILL line's vm_id exactly. New workload-calib1.4th: Bob confirmed the existing 10 workload-N.4th files aren't fixed. Sized to cross HEARTBEAT_CHECK_FREQUENCY (256 word-executions/tick) many times over while staying far lighter than RUN-FIB/RUN-CHAOS5, both too slow under TCG for a bounded verification run. A real, reusable addition, not a throwaway. Verified live on amd64 via a self-contained one-shot EXEC'd test (HB-ON, WORKER-BIRTH two calibration workers, HB-OFF, VM-ERROR? on both, KILL both, completion banner) rather than interactive polling, which breaks once HB-ON makes the log grow continuously via Hera/ Hermes/Artemis's own background ticks. Clean 3-arch qemu boot on the real committed change. Co-Authored-By: Claude Sonnet 5 <noreply@anthropic.com> Claude-Session: https://claude.ai/code/session_01BWpNjdwPtFLuVLaAq44L9K
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