Robert Allan JamesandClaude Sonnet 5
030a3e6dc0
Before flipping, found CAPSULE_SIG_MISSING (no signature at all) is the normal state everywhere except this machine -- CI and any other checkout have no access to the offline key, by design. Refusing on MISSING the same as INVALID would brick boot everywhere but here. Decided (on request): enforce ONLY on CAPSULE_SIG_INVALID (a signature that IS present but doesn't verify -- unambiguous tampering/corruption evidence). MISSING/NO_ROOT_KEY stay WARN-only permanently. All three capsule_birth.c call sites now return CAPSULE_RUN_ERR_INVALID on CAPSULE_SIG_INVALID, after logging the same WARN as before. Verified on all three architectures, both directions, per the original rollout commitment: positive case (real signed capsules) reboots clean with zero warnings on amd64/aarch64/riscv64. Negative case (same one-byte signature corruption used for the WARN-only proof, on Mama's own init.4th) now genuinely refuses identically on all three: "capsule sig: init.4th: INVALID" then "Init: Mama birth FAILED". The feared "no ok> at all" blast radius didn't materialize -- kernel_main.c already had graceful error handling for a failed Mama birth (log and continue, pre-existing code); the kernel reaches a degraded ok> rather than crashing, on all three architectures. Final acceptance pass (real signed capsules, tampering reverted) clean on all three. Milestone 6 is now fully closed except magic-number content-type detection (shared with Milestone 4, separate scope, not started). Documented in FABRIC-3.md. Co-Authored-By: Claude Sonnet 5 <noreply@anthropic.com> Claude-Session: https://claude.ai/code/session_01U14ET9CWAtbQMbYqomKgXd
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.