ENGINE step 4 Phase 1, Tasks 5b-5d, and the edge cases (Captain Bob, 2026-11-13: "Build it to proper
spec"; "Check for the edge cases"; "Yes, add it to v4-checks").
- v4/system/mesh.c, v4/include/v4/mesh.h: the nucleus assembled by the ROM and given to Hera as F18
cells; Hera born empty at place 0, the kernel on port 0, the console on port 1; told she is 10, in the
registry, the kernel's words, FORTH-79, sealed, POST, the kernel's capsules. NODE-BORN / NODE-KILL in
the owner's room.
- No scheduler: v4_mesh_tell returns once the node told says how its text ended, and
v4_mesh_step / v4_mesh_busy let the host step the fabric while it waits, so nodes run between
lines as during them. A text left "waiting" is owed its end: the next line ends it "Interrupted"
and is then run (MESH.md 7b.6).
- kernel: sk_v4.c boots through the mesh; its idle steps the fabric while a node can run, and halts
only when none can (#151 kept). stadium_return_quota and stadium_ops_forget on a kill.
- Tests: v4/tests/test_mesh_boot.c (32 checks: the boot, births, kills, rebirth, a live number, a
fault, no such node, Hera not killing herself, no room, a line too long, a node running for ever,
a wait broken by the next line), run by `make -C v4 test` and under ASan+UBSan by `sanitize`
(v4-checks); kernel/tests quota return; scripts/qemu_session.py births() and the edges on bare
metal.
- Docs: ENGINE.md 6 "who runs next" struck (settled: no scheduler); the Phase 1 plan; FABRIC-3
XLVIII.23; .claude/memory/rules.md: alpha.5 closed to new work.
- Evidence: v4-checks 80 programs under the sanitizers, 0 failures; the hosted builds alike; two
stopped v4-checks runs labelled STOPPED; three development amd64 boots labelled.
Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>
Claude-Session: https://claude.ai/code/session_017RzZgrf7V7Zk2iczBXDRbm
#189, ENGINE step 4, Phase 1 (plan 2026-11-13-engine-step4-phase1), Tasks
1-4. Captain Bob, 2026-11-13: Q1 "A new node key", Q2 "Per heartbeat
tick", Q3 "All of v3's", Q4 "In Phase 1" / "Full births now", who runs
next "Hera by compudynamics now" (Task 5, to come).
- stadium.c/.h: stadium_node_key(node) ("NODE" | number),
stadium_boot_init_for(first), stadium_birth_node(key, name);
stadium_boot_init() and stadium_birth_hera() are them for Hera's key, so
v3's path is as it was (only an impossible panic's words changed).
- kernel_main.c: the system is chosen and said first, then the Stadium,
sessions, switch-signal and kernel-Hermes tables for both systems in
v3's order; v4: Hera, node 10, patron zero under her node key, the word,
block and opcode layers. The quota self-test and the heartbeat's line
are functions now, called by both systems.
- sk_v4.c/.h: sk_v4_run() goes -- sk_v4_boot() returns, the kernel's
checks after POST (opcodes, words, conservation, quota, heartbeat), then
sk_v4_prompt(). sk_v4_charge_opcodes() at the heartbeat's service points
(the key wait, after each line) and once after POST.
- stadium_ops.c/.h: a node's 32 opcodes as Stadium patrons (HEAT-OP's
feed, "Both"): retirements charged as the word layer's dispatches, a
quantum each, the reservoir's floor kept, shared by retirements when
short; cooling per tick as words. ~0.5 us a charge on the host: kept.
- qemu_session.py: a v4 acceptance boot fails without "Stadium: N cells",
"Stadium conservation: CONSERVED" and the heartbeat's ticks (#189).
Tests first (logs/20261113-122142): the physics check failed on the v4
boot; test_stadium_node, test_stadium_ops (and its share case, after a
real boot showed ";" taking all the heat) failed before. Now: kernel host
tests all pass; amd64 v4 boot passes, POST 539/539, dict_hash unchanged,
"Stadium opcodes: 30 resident, hottest opcode 8", CONSERVED; a system=v3
boot prints its Stadium lines as on 2026-11-06.
Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>
Claude-Session: https://claude.ai/code/session_017RzZgrf7V7Zk2iczBXDRbm
Claude