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>
src/
Hosted StarForth VM implementation (compiled by the root Makefile).
Bare-metal kernel sources live in src/starkernel/; FORTH word
implementations in src/word_source/; the test harness in
src/test_runner/; platform shims in src/platform/.
Entry point / interpreter core
main.c— CLI entry point, VM init, DoE mode dispatch.vm.c— interpreter loop, stacks, dictionary state (the central runtime file).vm_api.c— external VM API implementation.vm_bootstrap.c— VM bootstrap initialization.vm_debug.c— debugging utilities.vm_time.c— time-related VM operations.vm_internal.h— internal-only declarations shared across thevm_*.cfiles, not part of the publicinclude/vm_api.hsurface.repl.c— REPL read-eval-print loop.cli.c— CLI argument parsing.io.c— I/O operations.log.c— logging infrastructure.
Memory / dictionary / blocks
memory_management.c— dictionary allocator.dictionary_management.c— dictionary allocation and search.dictionary_heat_optimization.c— Loop #1 execution-heat tracking.word_registry.c— word registration system.block_subsystem.c— logical→physical block mapper.blkio_file.c,blkio_ram.c,blkio_factory.c— block I/O backends (file-backed, RAM-backed) and the factory that selects between them.stack_management.c— stack operations.
Physics-driven adaptive runtime (7 feedback loops)
physics_runtime.c— main physics coordinator.physics_hotwords_cache.c— Loop #1 hot-words caching.physics_metadata.c— per-word metadata tracking.physics_pipelining_metrics.c— Loop #4 word-transition prediction.physics_execution_hooks.c— execution instrumentation.rolling_window_of_truth.c— Loop #2 circular execution-history buffer.inference_engine.c— Loops #5/#6, statistical inference (window-width, decay-slope).ssm_jacquard.c— L8 Jacquard steady-state mode selector; consumescompudynamics.cfor tuning-word/config lookups.compudynamics.c— generic compudynamics module (cd_tuning_word(),cd_tuning_vm()); the score/UCB/reward/weight constants for the L8 adaptive table live here, not inssm_jacquard.c.heartbeat_export.c— heartbeat metrics export (CSV export function itself not yet implemented — seedocs/working/architecture/heartbeat_csv_export.md).
Math / measurement
math_portable.c— portable math functions.profiler.c— performance profiling.doe_metrics.c— Design of Experiments metrics (2^7 factorial).
Any .bak file alongside a .c file here (doe_metrics.c.bak,
inference_engine.c.bak, vm.c.bak) is a pre-edit backup left by a past
maintenance script (see scripts/remove_loop_conditionals.sh), not a
build input.