New module (inference_words_test.c, Module 26) covers exactly the 8 words proof/COVERAGE.md marks proof-covered in inference_words.c (out of 20 registered): the 5 output accessors (INFER-WINDOW@/DECAY@/ VARIANCE@/FIT@/EARLY-EXIT@), INFER-RUN (populates what they read), and Q.VARIANCE/INFER-DECAY-SLOPE/INFER-WINDOW-WIDTH (array-based primitives, using HERE as multi-cell scratch memory). Deliberately not the L8 Jacquard or Bayesian-posterior words in the same file -- not proof-covered, out of this cluster's scope. Caught and fixed a contract-selection mistake before booting: copied CONTRACT_PHYSICS_TRANSPARENT from the Q48.16 cluster without checking whether it fit. It doesn't -- these words are specifically about reading physics state (dictionary heat, rolling window), so asserting A4' transparency on them would test an invariant they deliberately don't have. Switched to CONTRACT_NONE with an explanatory comment. Boot-verified: zero warnings, all 9 suite entries pass, FINAL TEST SUMMARY 1031->1040 total / 993->1002 passed (+9 exactly), 0 failed, contract checks (A4'/A1) still report "all passed" -- confirms the CONTRACT_NONE fix actually avoided the violation, not just silenced it. Cluster 4 of 4 (final one) left: physics freeze/diagnostic, 5 words. Full writeup in FABRIC-2.md Section J. 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 |
init-0.4th … init-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