Stage 3 follow-on: message-arrival eligibility hook + trampoline-blind switch-storm fix (FABRIC-3.md §XXVIII.2)

Implements the message-arrival eligibility signal FABRIC-3.md §XXVIII.1 left
open (has_work per-slot flag, set via new SWITCH-MARK-WORK primitive from
MSG-SEND) so an idle VM never becomes a switch target purely by waiting out
the readiness threshold.

Also root-causes and fixes a second, independent switch-storm: the tick's
"who is current" check used vm_log_attributed_vm(), which can't see a VM
parked in switch.c's own raw trampoline. Replaced with a dedicated
g_switch_current_vm tracked by the switch mechanism itself, and moved
target-slot eligibility reset to the switch decision point instead of
relying on ISR polling to observe a window that can be only a few
instructions wide.

Verified live on all 3 architectures: clean boot to zuse@Hera] ok>, live
cross-VM message dispatch, and (since a quiet log looks identical to a
livelocked storm once the DoE probe is gone) confirmed genuine REPL
liveness via QMP send-key + screendump on aarch64/riscv64, not log
inspection alone.

Co-Authored-By: Claude Sonnet 5 <noreply@anthropic.com>
Claude-Session: https://claude.ai/code/session_01BWpNjdwPtFLuVLaAq44L9K

FABRIC-3.md

@@ -3804,3 +3804,93 @@ counter/flag, written at the FORTH-side message-enqueue site, read the same ISR-
 readiness already is) but not yet implemented -- superseded in priority by this stack-ownership
 finding, which had to be fixed first. Revisit once this correction lands.
 
+## XXVIII.2 -- Message-arrival eligibility hook implemented; a second, independent switch-storm
+root cause found and fixed in the same pass (2026-09-14)
+
+**Picks up the "still open" item from §XXVIII.1's close: the message-arrival-hook eligibility
+signal.** Added `has_work`, a per-slot flag beside the existing `readiness` counter in
+`sk_switch_slot_entry_t` (`capsule_vm_switch_signal.c`). `sk_vm_switch_signal_mark_work(vm_id)`
+sets it; `sk_vm_switch_signal_tick()`'s pending-switch decision now requires both
+`readiness >= SK_SWITCH_READINESS_THRESHOLD` *and* `has_work`, and clears it (alongside
+`readiness`) the instant a slot becomes current, same as before. Wired end to end: `MSG-SEND`
+(`capsules/common/messaging.4th`, block 5021) now calls a new `SWITCH-MARK-WORK ( caddr u -- )`
+primitive (`mama_word_switch_mark_work`, `mama_forth_words.c`) with the message's `to` name,
+captured into a new `MSG-SEND-TO-IDX` variable before the existing `Q.SLOT`/`MSG-ALLOC` sequence
+consumes the stack. `SWITCH-MARK-WORK` resolves the name via
+`capsule_vm_find_by_name_nocase()` and silently no-ops on an unknown or malformed name --
+deliberate, since this fires on every message send, not a user-facing command. Registered in
+all four of `mama_forth_words.c`'s word-table blocks (`register_mama_forth_words()` x2,
+`register_child_vm_words()`), matching how every other VM-scoped primitive in that file is
+exposed. A VM that has never been sent anything therefore never becomes a switch target purely
+by sitting idle past the readiness threshold -- closes the "wasteful but no longer corrupting"
+bounce §XXVIII.1 flagged as its own still-open item.
+
+**While instrumenting this for verification, a second, wholly independent switch-storm root
+cause turned up -- not a regression of §XXVIII.1's fix, a different bug in the same
+neighborhood.** `sk_vm_switch_signal_tick()`'s "who is current" check used
+`vm_log_attributed_vm()` (`vm_core.c`) -- the wrong source. That function tracks nested
+`vm_interpret()` calls for log-source attribution and has no way to know a VM is running while
+parked inside `switch.c`'s own raw-C trampoline (`sk_vm_switch_entry()`), which never itself
+calls `vm_interpret()`. A VM whose only production behavior is that trampoline was therefore
+never seen as "current," so its own `readiness`/`has_work` state below never reset by the
+current-slot branch of `tick()` -- readiness re-armed on the very next timer tick, forever, once
+nothing else happened to independently move attribution around it. Found live: a switch storm,
+QEMU pinned near 100% CPU, serial log frozen solid.
+
+**Fix: track "who is physically running" inside the switch mechanism itself, independent of
+`vm_interpret()`'s own bookkeeping.** New `g_switch_current_vm` (`switch.c`), exposed via
+`sk_vm_switch_current_vm()`/`sk_vm_switch_set_current()` (`switch.h`) -- written unconditionally
+by `sk_vm_context_switch()` on both the switch-out and the eventual resume, the same
+single-writer-mainline discipline every other piece of Stage 2/3 state already follows. Seeded
+once at boot (`kernel_main.c`, right where Hera's slot registers) since she is genuinely running
+before any switch has ever happened and there is no other event to hang the initial value on.
+`sk_vm_switch_signal_tick()` now reads this instead of `vm_log_attributed_vm()`. An earlier
+attempt at fixing this by calling `vm_interpret(self, "MSG-TICK")` from inside the trampoline
+itself was tried and reverted -- it traded the switch-storm for a different, unrelated hang (a
+stall in `sk_repl_headless_wait()`'s WIREBIND-attachment wait, not root-caused, not worth
+chasing once the real fix was found) -- worth recording so it isn't retried.
+
+**A third bug, same root cause (eligibility state read too late), fixed alongside the other
+two:** `sk_vm_switch_signal_note_switch_performed()` reset a target slot's `readiness`/`has_work`
+by polling `tick()`'s current-slot branch, which depends on a real timer tick landing while that
+VM is genuinely "current" -- a window that can be as small as a few instructions for a VM whose
+only behavior is the placeholder trampoline's immediate yield-back, too narrow to reliably catch.
+Fixed by taking a `target_id` parameter (call site: `vm_core.c`'s Stage 3 checkpoint in
+`execute_colon_word()`) and resetting that slot's `readiness`/`has_work` directly, at the switch
+decision point, deterministically -- correctness no longer depends on ISR timing at all.
+`current_slot`/`sk_vm_switch_current_vm()` remain useful for the DoE-observable columns and for
+excluding the running slot from readiness accrual, but are no longer load-bearing for storm
+prevention.
+
+**Verification, run live by Claude Sonnet 5 at Bob's request, per this project's
+write-probe-capture-revert discipline minus the probe (the temporary `HB-ON` DoE trigger from
+§XXVIII.1 stays reverted; this pass verified without it):** all three architectures rebuilt
+clean (`make -f Makefile.starkernel ARCH=<arch> clean qemu`, foreground, one at a time, prior
+instance fully torn down including leaked `tail -f` helper processes before the next launch) and
+boot to `[zuse@Hera] ok>` -- Zuse auto-authenticates from the attached thumbdrive on every arch,
+matching the identity-lockdown work from §XI. Live cross-VM message dispatch observed
+unprompted (`Stadium: dispatch cell=42634 behaviour=DELIVER msg_idx=0`, attributed to
+`[zuse@Artemis]`), confirming the eligibility mechanism is genuinely exercised, not just present
+in the binary. **Explicitly called out because it matters for how this was checked:** with the
+DoE probe gone, a healthy idle REPL and a livelocked storm produce the identical symptom -- a
+quiet serial log -- so log growth alone was not trusted as proof of health on aarch64/riscv64
+after a quiet stretch. Verified instead via QMP (`send-key` typing `1 1 + . ` followed by `ret`,
+then `screendump`) against the running instance's own QMP socket, confirming a real computed
+`2` appended to the log on both architectures -- the same headless-input technique this
+project's memory already recommends for exactly this class of ambiguity. All three
+architectures: clean build, clean boot, live messaging, correct computation, zero PANIC/assertion
+output, no leaked QEMU or helper processes after teardown.
+
+**Found live, flagged, deliberately not fixed (not requested, not this pass's scope):**
+`VM-EXEC: ERROR in Artemis` prints deterministically on every boot, on all three architectures,
+immediately after Artemis's own birth completes and just before Zuse's thumbdrive
+identity-confirmation line -- consistent enough across arches to be a real, reproducible
+condition rather than timing noise, but boot continues cleanly past it every time. Worth
+someone's attention in a future pass; `mama_word_vm_exec()`'s error-report path
+(`mama_forth_words.c` ~line 781) is where the message originates, but the actual failing
+`VM-EXEC` call site and cause were not traced this pass.
+
+**Still open:** the MSG-TICK/Stage-3-switch dual-ownership rough edge §XXVIII itself flagged
+(both mechanisms can independently move control between the same VMs) is unchanged by this
+pass. Stage 4 (WIREBIND-scope extension) remains a ratified-decision-only step, untouched.
+

capsules/BLOCK_MAP.md

@@ -1,5 +1,5 @@
 # Capsule Block Manifest — Auto-generated
-<!-- Generated by mkcapsule --manifest  2026-09-14T03:55:53Z -->
+<!-- Generated by mkcapsule --manifest  2026-09-14T20:33:48Z -->
 <!-- DO NOT EDIT — re-run mkcapsule --manifest to refresh.  -->
 <!-- Hand-written justifications and immutability notes live  -->
 <!-- in MANIFEST.md alongside this auto-generated index.      -->
@@ -12,7 +12,7 @@
 | `acl-std79.4th` | 4023, 4024, 4025, 4026, 4027, 4028, 4029, 4030, 4031, 4032, 4033, 4034, 4035, 4036, 4037, 4038, 4039, 4040, 4041, 4042, 4043, 4044, 4045, 4046, 4047, 4048 | `0x773bf9209df191d1` | yes |
 | `artemis:init.4th` | 4110, 4111, 4112, 4113, 4122, 4123, 4124, 4125, 4126, 4127, 4128, 4129, 4130, 4131, 4132, 4133, 4134, 4135, 4136, 4137, 4138, 4139, 4140, 4141, 4160, 4161, 4162, 4163, 4164, 4165, 4166, 4167, 4168, 4169, 4170, 4171, 4172, 4173, 4174, 4177, 4178, 4179, 4180, 4181, 4182, 4851, 4852, 4853, 4854, 4856, 4857, 4858, 4860 | `0xf55edc4e76a8c294` | yes |
 | `block-acl.4th` | 4019, 4020 | `0xf6cc2a59e3a6734e` | yes |
-| `common:messaging.4th` | 5003, 5004, 5005, 5006, 5007, 5008, 5009, 5010, 5011, 5012, 5013, 5014, 5015, 5016, 5017, 5018, 5019, 5020, 5021, 5022, 5023, 5024, 5025, 5026, 5027, 5028, 5029, 5030, 5031, 5032, 5033, 5034, 5035, 5036, 5037, 5038, 5039, 5040, 5041, 5042 | `0xedde53f6faed7355` | yes |
+| `common:messaging.4th` | 5003, 5004, 5005, 5006, 5007, 5008, 5009, 5010, 5011, 5012, 5013, 5014, 5015, 5016, 5017, 5018, 5019, 5020, 5021, 5022, 5023, 5024, 5025, 5026, 5027, 5028, 5029, 5030, 5031, 5032, 5033, 5034, 5035, 5036, 5037, 5038, 5039, 5040, 5041, 5042 | `0x201cfd6d39fcb22d` | yes |
 | `common:msg.4th` | 4055 | `0x850a0382344ea6c4` | yes |
 | `doe-campaign.4th` | 4060, 4061, 4062, 4063, 4064, 4065 | `0x3d4549142d91ec20` | yes |
 | `doe.4th` | 2100, 2101, 2102, 2103, 2104, 2105, 2106, 2107 | `0xf154616d248e861f` | yes |
@@ -331,46 +331,46 @@
 | 5000 | `fabric.4th` | `0x9d9489cbeca4099b` | ok |
 | 5001 | `fabric.4th` | `0x9d9489cbeca4099b` | ok |
 | 5002 | `fabric.4th` | `0x9d9489cbeca4099b` | ok |
-| 5003 | `common:messaging.4th` | `0xedde53f6faed7355` | ok |
+| 5003 | `common:messaging.4th` | `0x201cfd6d39fcb22d` | ok |
-| 5004 | `common:messaging.4th` | `0xedde53f6faed7355` | ok |
+| 5004 | `common:messaging.4th` | `0x201cfd6d39fcb22d` | ok |
-| 5005 | `common:messaging.4th` | `0xedde53f6faed7355` | ok |
+| 5005 | `common:messaging.4th` | `0x201cfd6d39fcb22d` | ok |
-| 5006 | `common:messaging.4th` | `0xedde53f6faed7355` | ok |
+| 5006 | `common:messaging.4th` | `0x201cfd6d39fcb22d` | ok |
-| 5007 | `common:messaging.4th` | `0xedde53f6faed7355` | ok |
+| 5007 | `common:messaging.4th` | `0x201cfd6d39fcb22d` | ok |
-| 5008 | `common:messaging.4th` | `0xedde53f6faed7355` | ok |
+| 5008 | `common:messaging.4th` | `0x201cfd6d39fcb22d` | ok |
-| 5009 | `common:messaging.4th` | `0xedde53f6faed7355` | ok |
+| 5009 | `common:messaging.4th` | `0x201cfd6d39fcb22d` | ok |
-| 5010 | `common:messaging.4th` | `0xedde53f6faed7355` | ok |
+| 5010 | `common:messaging.4th` | `0x201cfd6d39fcb22d` | ok |
-| 5011 | `common:messaging.4th` | `0xedde53f6faed7355` | ok |
+| 5011 | `common:messaging.4th` | `0x201cfd6d39fcb22d` | ok |
-| 5012 | `common:messaging.4th` | `0xedde53f6faed7355` | ok |
+| 5012 | `common:messaging.4th` | `0x201cfd6d39fcb22d` | ok |
-| 5013 | `common:messaging.4th` | `0xedde53f6faed7355` | ok |
+| 5013 | `common:messaging.4th` | `0x201cfd6d39fcb22d` | ok |
-| 5014 | `common:messaging.4th` | `0xedde53f6faed7355` | ok |
+| 5014 | `common:messaging.4th` | `0x201cfd6d39fcb22d` | ok |
-| 5015 | `common:messaging.4th` | `0xedde53f6faed7355` | ok |
+| 5015 | `common:messaging.4th` | `0x201cfd6d39fcb22d` | ok |
-| 5016 | `common:messaging.4th` | `0xedde53f6faed7355` | ok |
+| 5016 | `common:messaging.4th` | `0x201cfd6d39fcb22d` | ok |
-| 5017 | `common:messaging.4th` | `0xedde53f6faed7355` | ok |
+| 5017 | `common:messaging.4th` | `0x201cfd6d39fcb22d` | ok |
-| 5018 | `common:messaging.4th` | `0xedde53f6faed7355` | ok |
+| 5018 | `common:messaging.4th` | `0x201cfd6d39fcb22d` | ok |
-| 5019 | `common:messaging.4th` | `0xedde53f6faed7355` | ok |
+| 5019 | `common:messaging.4th` | `0x201cfd6d39fcb22d` | ok |
-| 5020 | `common:messaging.4th` | `0xedde53f6faed7355` | ok |
+| 5020 | `common:messaging.4th` | `0x201cfd6d39fcb22d` | ok |
-| 5021 | `common:messaging.4th` | `0xedde53f6faed7355` | ok |
+| 5021 | `common:messaging.4th` | `0x201cfd6d39fcb22d` | ok |
-| 5022 | `common:messaging.4th` | `0xedde53f6faed7355` | ok |
+| 5022 | `common:messaging.4th` | `0x201cfd6d39fcb22d` | ok |
-| 5023 | `common:messaging.4th` | `0xedde53f6faed7355` | ok |
+| 5023 | `common:messaging.4th` | `0x201cfd6d39fcb22d` | ok |
-| 5024 | `common:messaging.4th` | `0xedde53f6faed7355` | ok |
+| 5024 | `common:messaging.4th` | `0x201cfd6d39fcb22d` | ok |
-| 5025 | `common:messaging.4th` | `0xedde53f6faed7355` | ok |
+| 5025 | `common:messaging.4th` | `0x201cfd6d39fcb22d` | ok |
-| 5026 | `common:messaging.4th` | `0xedde53f6faed7355` | ok |
+| 5026 | `common:messaging.4th` | `0x201cfd6d39fcb22d` | ok |
-| 5027 | `common:messaging.4th` | `0xedde53f6faed7355` | ok |
+| 5027 | `common:messaging.4th` | `0x201cfd6d39fcb22d` | ok |
-| 5028 | `common:messaging.4th` | `0xedde53f6faed7355` | ok |
+| 5028 | `common:messaging.4th` | `0x201cfd6d39fcb22d` | ok |
-| 5029 | `common:messaging.4th` | `0xedde53f6faed7355` | ok |
+| 5029 | `common:messaging.4th` | `0x201cfd6d39fcb22d` | ok |
-| 5030 | `common:messaging.4th` | `0xedde53f6faed7355` | ok |
+| 5030 | `common:messaging.4th` | `0x201cfd6d39fcb22d` | ok |
-| 5031 | `common:messaging.4th` | `0xedde53f6faed7355` | ok |
+| 5031 | `common:messaging.4th` | `0x201cfd6d39fcb22d` | ok |
-| 5032 | `common:messaging.4th` | `0xedde53f6faed7355` | ok |
+| 5032 | `common:messaging.4th` | `0x201cfd6d39fcb22d` | ok |
-| 5033 | `common:messaging.4th` | `0xedde53f6faed7355` | ok |
+| 5033 | `common:messaging.4th` | `0x201cfd6d39fcb22d` | ok |
-| 5034 | `common:messaging.4th` | `0xedde53f6faed7355` | ok |
+| 5034 | `common:messaging.4th` | `0x201cfd6d39fcb22d` | ok |
-| 5035 | `common:messaging.4th` | `0xedde53f6faed7355` | ok |
+| 5035 | `common:messaging.4th` | `0x201cfd6d39fcb22d` | ok |
-| 5036 | `common:messaging.4th` | `0xedde53f6faed7355` | ok |
+| 5036 | `common:messaging.4th` | `0x201cfd6d39fcb22d` | ok |
-| 5037 | `common:messaging.4th` | `0xedde53f6faed7355` | ok |
+| 5037 | `common:messaging.4th` | `0x201cfd6d39fcb22d` | ok |
-| 5038 | `common:messaging.4th` | `0xedde53f6faed7355` | ok |
+| 5038 | `common:messaging.4th` | `0x201cfd6d39fcb22d` | ok |
-| 5039 | `common:messaging.4th` | `0xedde53f6faed7355` | ok |
+| 5039 | `common:messaging.4th` | `0x201cfd6d39fcb22d` | ok |
-| 5040 | `common:messaging.4th` | `0xedde53f6faed7355` | ok |
+| 5040 | `common:messaging.4th` | `0x201cfd6d39fcb22d` | ok |
-| 5041 | `common:messaging.4th` | `0xedde53f6faed7355` | ok |
+| 5041 | `common:messaging.4th` | `0x201cfd6d39fcb22d` | ok |
-| 5042 | `common:messaging.4th` | `0xedde53f6faed7355` | ok |
+| 5042 | `common:messaging.4th` | `0x201cfd6d39fcb22d` | ok |
 | 5100 | `turtle.4th` | `0x4d470418ca543365` | ok |
 | 5101 | `turtle.4th` | `0x4d470418ca543365` | ok |
 | 5102 | `turtle.4th` | `0x4d470418ca543365` | ok |

capsules/common/messaging.4th

@@ -226,6 +226,7 @@ Block 5019
 Block 5020
 ( deliver )
 VARIABLE MSG-LAST-MSG
+VARIABLE MSG-SEND-TO-IDX
 : IDX>NAME ( idx -- addr u )
   DUP VM-MAX >= IF DROP 0 0 EXIT THEN
   DUP CELLS VM-NAME-ADDRS + @
@@ -239,13 +240,15 @@ Block 5021
 ( (zero-heat would lose eviction-fallback density )
 ( comparisons), not set afterward as before. )
 : MSG-SEND ( type from to paddr plen ch -- )
+  3 PICK MSG-SEND-TO-IDX !
   Q.SLOT MSG-ALLOC DUP 0= IF 2DROP 2DROP 2DROP DROP EXIT THEN
   >R
   MSG-SEQ @ 1+ DUP MSG-SEQ ! R@ MSG-SEQ!
   R@ MSG-CH!
   R@ MSG-PLEN! R@ MSG-PADDR!
   R@ MSG-TO!   R@ MSG-FROM! DUP R@ MSG-TYPE! R@ MSG-ORIG-TYPE!
-  R> DROP ;
+  R> DROP
+  MSG-SEND-TO-IDX @ IDX>NAME SWITCH-MARK-WORK ;
 Block 5022
 ( MSG-COOL-ONE/ALL: linear decay per tick )
 VARIABLE MSG-SCAN

experiments/bare_metal/latest/amd64.csv

@@ -1,287 +1,2 @@
 tick_number,elapsed_ns,tick_interval_ns,cache_hits_delta,bucket_hits_delta,word_executions_delta,hot_word_count,avg_word_heat_q48,window_width,actual_window_size,predicted_label_hits,jitter_bits,apic_ticks,time_trust_q48,variance_q48,vm_call_depth_max,hera_heat_q48,hermes_heat_q48,artemis_heat_q48,fleet_k_q48,fleet_conserved,switch_count_cumulative,switch_current_slot,switch_hera_readiness,switch_hermes_readiness,switch_artemis_readiness,switch_ticks_since
-104,1040000,890000,0,0,15667,80,43,256,256,0,4695806354533646336,437,65536,0,1,65536,0,0,65536,1,0,0,0,2,2,2
+104,1040000,890000,0,0,15665,80,42,256,256,0,4695806354533646336,405,65536,0,1,65536,0,0,65536,1,0,0,0,5,5,5
-16,160000,18446744073708671616,0,0,2988,56,19,4096,2379,0,4895412794951728717,438,65536,0,0,65536,0,0,65536,1,0,0,0,3,3,3
-17,170000,10000,0,0,256,57,21,4096,2635,0,0,439,65536,0,0,65536,0,0,65536,1,0,1,1,0,4,4
-18,180000,10000,0,0,256,57,22,4096,2891,0,0,439,65536,0,0,65536,0,0,65536,1,0,1,1,0,4,4
-19,190000,10000,0,0,256,57,23,4096,3147,0,0,440,65536,0,0,65536,0,0,65536,1,0,1,2,0,5,5
-20,200000,10000,0,0,256,57,25,4096,3403,0,0,441,65536,0,0,65536,0,0,65536,1,0,1,3,0,6,6
-21,210000,10000,0,0,256,57,26,4096,3659,0,0,441,65536,0,0,65536,0,0,65536,1,0,1,3,0,6,6
-22,220000,10000,0,0,256,61,27,4096,3915,0,0,442,65536,0,0,65536,0,0,65536,1,0,1,4,0,7,7
-23,230000,10000,0,0,256,61,28,4096,4096,0,0,443,65536,0,0,65536,0,0,65536,1,0,1,5,0,8,8
-24,240000,10000,0,0,256,61,30,4096,4096,0,0,443,65536,0,0,65536,0,0,65536,1,0,1,5,0,8,8
-25,250000,10000,0,0,256,61,31,2048,2048,0,0,444,65536,0,0,65536,0,0,65536,1,0,1,6,0,9,9
-26,260000,10000,0,0,256,61,32,2048,2048,0,0,445,65536,0,0,65536,0,0,65536,1,0,1,7,0,10,10
-27,270000,10000,0,0,256,61,34,1024,1024,0,0,446,65536,0,0,65536,0,0,65536,1,0,1,8,0,11,11
-28,280000,10000,0,0,256,61,35,1024,1024,0,0,447,65536,0,0,65536,0,0,65536,1,0,1,9,0,12,12
-3974,39740000,39460000,0,0,1009307,64,3669,256,256,1975,4720563699226509312,449,65536,0,1,65536,0,0,65536,1,0,2,11,2,0,14
-3975,39750000,10000,0,0,256,66,3670,256,256,1,0,449,65536,0,1,65536,0,0,65536,1,0,2,11,2,0,14
-3976,39760000,10000,0,0,256,66,3671,256,256,1,0,450,65536,0,1,65536,0,0,65536,1,0,2,12,3,0,15
-3977,39770000,10000,0,0,256,66,3671,256,256,1,0,451,65536,0,1,65536,0,0,65536,1,0,2,13,4,0,16
-3978,39780000,10000,0,0,256,66,3672,256,256,1,0,452,65536,0,1,65536,0,0,65536,1,0,2,14,5,0,17
-3979,39790000,10000,0,0,256,66,3673,256,256,1,0,453,65536,0,1,65536,0,0,65536,1,0,2,15,6,0,18
-3980,39800000,10000,0,0,256,68,3674,256,256,1,0,453,65536,0,1,65536,0,0,65536,1,0,2,15,6,0,18
-3981,39810000,10000,0,0,256,71,3675,256,256,1,0,454,65536,0,1,65536,0,0,65536,1,0,2,16,7,0,19
-3982,39820000,10000,0,0,256,71,3676,256,256,1,0,455,65536,0,1,65536,0,0,65536,1,0,2,17,8,0,20
-3983,39830000,10000,0,0,256,71,3677,256,256,1,0,455,65536,0,1,65536,0,0,65536,1,0,2,17,8,0,20
-3984,39840000,10000,0,0,256,71,3678,256,256,1,0,456,65536,0,1,65536,0,0,65536,1,0,2,18,9,0,21
-3985,39850000,10000,0,0,256,71,3679,256,256,1,0,456,65536,0,1,65536,0,0,65536,1,0,2,18,9,0,21
-3986,39860000,10000,0,0,256,71,3680,256,256,1,0,457,65536,0,1,65536,0,0,65536,1,0,2,19,10,0,22
-105,1050000,18446744073670741616,0,0,18655,80,43,256,256,0,4895412794951710197,459,65536,0,1,65536,0,0,65536,1,0,0,0,12,2,24
-106,1060000,10000,0,0,256,81,46,256,256,0,0,460,65536,0,1,65536,0,0,65536,1,0,0,0,13,3,25
-107,1070000,10000,0,0,256,81,47,256,256,0,0,461,65536,0,1,65536,0,0,65536,1,0,0,0,14,4,26
-108,1080000,10000,0,0,256,79,48,256,256,0,0,461,65536,0,1,65536,0,0,65536,1,0,0,0,14,4,26
-109,1090000,10000,0,0,256,79,49,256,256,0,0,462,65536,0,1,65536,0,0,65536,1,0,0,0,15,5,27
-110,1100000,10000,0,0,256,77,51,256,256,0,0,463,65536,0,1,65536,0,0,65536,1,0,0,0,16,6,28
-111,1110000,10000,0,0,256,76,55,256,256,0,0,464,65536,0,1,65536,0,0,65536,1,0,0,0,17,7,29
-112,1120000,10000,0,0,256,76,56,256,256,0,0,464,65536,0,1,65536,0,0,65536,1,0,0,0,17,7,29
-113,1130000,10000,0,0,256,80,67,256,256,0,0,464,65536,0,1,65536,0,0,65536,1,0,0,0,17,7,29
-114,1140000,10000,0,0,256,79,78,256,256,0,0,465,65536,0,1,65536,0,0,65536,1,0,0,0,18,8,30
-115,1150000,10000,0,0,256,79,92,256,256,0,0,466,65536,0,1,65536,0,0,65536,1,0,0,0,19,9,31
-116,1160000,10000,0,0,256,79,93,256,256,0,0,466,65536,0,1,65536,0,0,65536,1,0,0,0,19,9,31
-117,1170000,10000,0,0,256,77,102,256,256,0,0,467,65536,0,1,65536,0,0,65536,1,0,0,0,20,10,32
-118,1180000,10000,0,0,256,77,104,256,256,0,0,467,65536,0,1,65536,0,0,65536,1,0,0,0,20,10,32
-119,1190000,10000,0,0,256,77,103,256,256,0,0,468,65536,0,1,65536,0,0,65536,1,0,0,0,21,11,33
-120,1200000,10000,0,0,256,77,102,256,256,0,0,468,65536,0,1,65536,0,0,65536,1,0,0,0,21,11,33
-29,290000,18446744073708641616,0,0,6316,62,36,512,512,0,4895412794951728703,531,39891,42131,0,65523,13,0,65536,1,0,1,1,0,13,35
-30,300000,10000,0,0,256,62,37,512,512,0,0,532,39891,42131,0,65523,13,0,65536,1,0,1,2,0,14,36
-31,310000,10000,0,0,256,62,39,256,256,0,0,532,39891,42131,0,65523,13,0,65536,1,0,1,2,0,14,36
-32,320000,10000,0,0,256,62,40,256,256,0,0,533,39891,42131,0,65523,13,0,65536,1,0,1,3,0,15,37
-33,330000,10000,0,0,256,63,41,256,256,0,0,533,39891,42131,0,65523,13,0,65536,1,0,1,3,0,15,37
-34,340000,10000,0,0,256,63,42,256,256,0,0,534,39891,42131,0,65523,13,0,65536,1,0,1,4,0,16,38
-35,350000,10000,0,0,256,63,44,256,256,0,0,535,39891,42131,0,65523,13,0,65536,1,0,1,5,0,17,39
-36,360000,10000,0,0,256,63,45,256,256,0,0,536,39891,42131,0,65523,13,0,65536,1,0,1,6,0,18,40
-37,370000,10000,0,0,256,63,46,256,256,0,0,536,39891,42131,0,65523,13,0,65536,1,0,1,6,0,18,40
-38,380000,10000,0,0,256,63,48,256,256,0,0,537,39891,42131,0,65523,13,0,65536,1,0,1,7,0,19,41
-39,390000,10000,0,0,256,63,49,256,256,0,0,537,39891,42131,0,65523,13,0,65536,1,0,1,7,0,19,41
-40,400000,10000,0,0,256,63,50,256,256,0,0,538,39891,42131,0,65523,13,0,65536,1,0,1,8,0,20,42
-41,410000,10000,0,0,256,63,51,256,256,0,0,538,39891,42131,0,65523,13,0,65536,1,0,1,8,0,20,42
-3987,39870000,39460000,0,0,1009307,72,3681,256,256,1988,4720563699226509312,541,39891,42131,1,65511,13,12,65536,1,0,2,11,2,0,45
-3988,39880000,10000,0,0,256,72,3682,256,256,1,0,541,39891,42131,1,65511,13,12,65536,1,0,2,11,2,0,45
-3989,39890000,10000,0,0,256,72,3683,256,256,1,0,542,39891,42131,1,65511,13,12,65536,1,0,2,12,3,0,46
-3990,39900000,10000,0,0,256,72,3684,256,256,1,0,543,39891,42131,1,65511,13,12,65536,1,0,2,13,4,0,47
-3991,39910000,10000,0,0,256,72,3684,256,256,1,0,544,39891,42131,1,65511,13,12,65536,1,0,2,14,5,0,48
-3992,39920000,10000,0,0,256,72,3685,256,256,1,0,544,39891,42131,1,65511,13,12,65536,1,0,2,14,5,0,48
-3993,39930000,10000,0,0,256,72,3686,256,256,1,0,545,39891,42131,1,65511,13,12,65536,1,0,2,15,6,0,49
-3994,39940000,10000,0,0,256,72,3687,256,256,1,0,546,39891,42131,1,65511,13,12,65536,1,0,2,16,7,0,50
-3995,39950000,10000,0,0,256,72,3688,256,256,1,0,546,39891,42131,1,65511,13,12,65536,1,0,2,16,7,0,50
-3996,39960000,10000,0,0,256,72,3689,256,256,1,0,547,39891,42131,1,65511,13,12,65536,1,0,2,17,8,0,51
-3997,39970000,10000,0,0,256,72,3690,256,256,1,0,548,39891,42131,1,65511,13,12,65536,1,0,2,18,9,0,52
-3998,39980000,10000,0,0,256,72,3691,256,256,1,0,549,39891,42131,1,65511,13,12,65536,1,0,2,19,10,0,53
-3999,39990000,10000,0,0,256,72,3692,256,256,1,0,549,39891,42131,1,65511,13,12,65536,1,0,2,19,10,0,53
-121,1210000,18446744073670771616,0,0,22751,77,103,256,256,0,4895412794951710212,552,39891,42131,1,65511,13,12,65536,1,0,0,0,13,2,56
-122,1220000,10000,0,0,256,77,104,256,256,0,0,552,39891,42131,1,65511,13,12,65536,1,0,0,0,13,2,56
-123,1230000,10000,0,0,256,77,106,256,256,0,0,553,39891,42131,1,65511,13,12,65536,1,0,0,0,14,3,57
-124,1240000,10000,0,0,256,77,108,256,256,0,0,554,39891,42131,1,65511,13,12,65536,1,0,0,0,15,4,58
-125,1250000,10000,0,0,256,77,109,256,256,0,0,555,39891,42131,1,65511,13,12,65536,1,0,0,0,16,5,59
-126,1260000,10000,0,0,256,75,112,256,256,0,0,556,39891,42131,1,65511,13,12,65536,1,0,0,0,17,6,60
-127,1270000,10000,0,0,256,76,113,256,256,0,0,556,39891,42131,1,65511,13,12,65536,1,0,0,0,17,6,60
-128,1280000,10000,0,0,256,76,127,256,256,0,0,556,39891,42131,1,65511,13,12,65536,1,0,0,0,17,6,60
-129,1290000,10000,0,0,256,72,135,256,256,0,0,557,39891,42131,1,65511,13,12,65536,1,0,0,0,18,7,61
-130,1300000,10000,0,0,256,72,136,256,256,0,0,558,39891,42131,1,65511,13,12,65536,1,0,0,0,19,8,62
-131,1310000,10000,0,0,256,72,138,256,256,0,0,559,39891,42131,1,65511,13,12,65536,1,0,0,0,20,9,63
-132,1320000,10000,0,0,256,72,142,256,256,0,0,559,39891,42131,1,65511,13,12,65536,1,0,0,0,20,9,63
-133,1330000,10000,0,0,256,72,153,256,256,0,0,560,39891,42131,1,65511,13,12,65536,1,0,0,0,21,10,64
-134,1340000,10000,0,0,256,72,157,256,256,0,0,560,39891,42131,1,65511,13,12,65536,1,0,0,0,21,10,64
-42,420000,18446744073708631616,0,0,9644,64,53,256,256,0,4895412794951728698,631,65535,1,0,65499,25,12,65536,1,0,1,1,0,12,66
-43,430000,10000,0,0,256,64,54,256,256,0,0,631,65535,1,0,65499,25,12,65536,1,0,1,1,0,12,66
-44,440000,10000,0,0,256,64,55,256,256,0,0,632,65535,1,0,65499,25,12,65536,1,0,1,2,0,13,67
-45,450000,10000,0,0,256,64,57,256,256,0,0,633,65535,1,0,65499,25,12,65536,1,0,1,3,0,14,68
-46,460000,10000,0,0,256,64,58,256,256,0,0,633,65535,1,0,65499,25,12,65536,1,0,1,3,0,14,68
-47,470000,10000,0,0,256,64,59,256,256,0,0,634,65535,1,0,65499,25,12,65536,1,0,1,4,0,15,69
-48,480000,10000,0,0,256,64,60,256,256,0,0,635,65535,1,0,65499,25,12,65536,1,0,1,5,0,16,70
-49,490000,10000,0,0,256,64,62,256,256,0,0,635,65535,1,0,65499,25,12,65536,1,0,1,5,0,16,70
-50,500000,10000,0,0,256,64,63,256,256,0,0,636,65535,1,0,65499,25,12,65536,1,0,1,6,0,17,71
-51,510000,10000,0,0,256,64,65,256,256,0,0,637,65535,1,0,65499,25,12,65536,1,0,1,7,0,18,72
-52,520000,10000,0,0,256,64,67,256,256,0,0,638,65535,1,0,65499,25,12,65536,1,0,1,8,0,19,73
-53,530000,10000,0,0,256,62,68,256,256,0,0,638,65535,1,0,65499,25,12,65536,1,0,1,8,0,19,73
-54,540000,10000,0,0,256,62,70,256,256,0,0,639,65535,1,0,65499,25,12,65536,1,0,1,9,0,20,74
-4000,40000000,39460000,0,0,1009307,74,3693,256,256,2001,4720563699226509312,641,65535,1,1,65487,25,24,65536,1,0,2,11,2,0,76
-4001,40010000,10000,0,0,256,74,3694,256,256,1,0,642,65535,1,1,65487,25,24,65536,1,0,2,12,3,0,77
-4002,40020000,10000,0,0,256,74,3695,256,256,1,0,643,65535,1,1,65487,25,24,65536,1,0,2,13,4,0,78
-4003,40030000,10000,0,0,256,74,3696,256,256,1,0,643,65535,1,1,65487,25,24,65536,1,0,2,13,4,0,78
-4004,40040000,10000,0,0,256,74,3696,256,256,1,0,644,65535,1,1,65487,25,24,65536,1,0,2,14,5,0,79
-4005,40050000,10000,0,0,256,74,3697,256,256,1,0,644,65535,1,1,65487,25,24,65536,1,0,2,14,5,0,79
-4006,40060000,10000,0,0,256,74,3698,256,256,1,0,645,65535,1,1,65487,25,24,65536,1,0,2,15,6,0,80
-4007,40070000,10000,0,0,256,74,3699,256,256,1,0,645,65535,1,1,65487,25,24,65536,1,0,2,15,6,0,80
-4008,40080000,10000,0,0,256,74,3700,256,256,1,0,646,65535,1,1,65487,25,24,65536,1,0,2,16,7,0,81
-4009,40090000,10000,0,0,256,74,3701,256,256,1,0,646,65535,1,1,65487,25,24,65536,1,0,2,16,7,0,81
-4010,40100000,10000,0,0,256,74,3702,256,256,1,0,647,65535,1,1,65487,25,24,65536,1,0,2,17,8,0,82
-4011,40110000,10000,0,0,256,74,3703,256,256,1,0,647,65535,1,1,65487,25,24,65536,1,0,2,17,8,0,82
-4012,40120000,10000,0,0,256,74,3704,256,256,1,0,648,65535,1,1,65487,25,24,65536,1,0,2,18,9,0,83
-135,1350000,18446744073670781616,0,0,26335,72,156,256,256,0,4895412794951710216,651,65535,1,1,65487,25,24,65536,1,0,0,0,12,2,86
-136,1360000,10000,0,0,256,72,159,256,256,0,0,651,65535,1,1,65487,25,24,65536,1,0,0,0,12,2,86
-137,1370000,10000,0,0,256,72,161,256,256,0,0,652,65535,1,1,65487,25,24,65536,1,0,0,0,13,3,87
-138,1380000,10000,0,0,256,72,163,256,256,0,0,652,65535,1,1,65487,25,24,65536,1,0,0,0,13,3,87
-139,1390000,10000,0,0,256,72,163,256,256,0,0,653,65535,1,1,65487,25,24,65536,1,0,0,0,14,4,88
-140,1400000,10000,0,0,256,72,165,256,256,0,0,653,65535,1,1,65487,25,24,65536,1,0,0,0,14,4,88
-141,1410000,10000,0,0,256,72,167,256,256,0,0,654,65535,1,1,65487,25,24,65536,1,0,0,0,15,5,89
-142,1420000,10000,0,0,256,72,169,256,256,0,0,655,65535,1,1,65487,25,24,65536,1,0,0,0,16,6,90
-143,1430000,10000,0,0,256,72,171,256,256,0,0,655,65535,1,1,65487,25,24,65536,1,0,0,0,16,6,90
-144,1440000,10000,0,0,256,72,174,256,256,0,0,656,65535,1,1,65487,25,24,65536,1,0,0,0,17,7,91
-145,1450000,10000,0,0,256,72,176,256,256,0,0,657,65535,1,1,65487,25,24,65536,1,0,0,0,18,8,92
-146,1460000,10000,0,0,256,72,178,256,256,0,0,657,65535,1,1,65487,25,24,65536,1,0,0,0,18,8,92
-147,1470000,10000,0,0,256,72,180,256,256,0,0,658,65535,1,1,65487,25,24,65536,1,0,0,0,19,9,93
-55,550000,18446744073708631616,0,0,12972,61,73,256,256,0,4895412794951728698,731,65536,0,0,65476,36,24,65536,1,0,1,1,0,10,94
-56,560000,10000,0,0,256,61,75,256,256,0,0,732,65536,0,0,65476,36,24,65536,1,0,1,2,0,11,95
-57,570000,10000,0,0,256,61,76,256,256,0,0,732,65536,0,0,65476,36,24,65536,1,0,1,2,0,11,95
-58,580000,10000,0,0,256,61,77,256,256,0,0,733,65536,0,0,65476,36,24,65536,1,0,1,3,0,12,96
-59,590000,10000,0,0,256,61,79,256,256,0,0,734,65536,0,0,65476,36,24,65536,1,0,1,4,0,13,97
-60,600000,10000,0,0,256,61,85,256,256,0,0,735,65536,0,0,65476,36,24,65536,1,0,1,5,0,14,98
-61,610000,10000,0,0,256,61,87,256,256,0,0,735,65536,0,0,65476,36,24,65536,1,0,1,5,0,14,98
-62,620000,10000,0,0,256,61,89,256,256,0,0,736,65536,0,0,65476,36,24,65536,1,0,1,6,0,15,99
-63,630000,10000,0,0,256,61,92,256,256,0,0,737,65536,0,0,65476,36,24,65536,1,0,1,7,0,16,100
-64,640000,10000,0,0,256,61,95,256,256,0,0,737,65536,0,0,65476,36,24,65536,1,0,1,7,0,16,100
-65,650000,10000,0,0,256,60,96,256,256,0,0,738,65536,0,0,65476,36,24,65536,1,0,1,8,0,17,101
-66,660000,10000,0,0,256,59,102,256,256,0,0,738,65536,0,0,65476,36,24,65536,1,0,1,8,0,17,101
-67,670000,10000,0,0,256,59,104,256,256,0,0,739,65536,0,0,65476,36,24,65536,1,0,1,9,0,18,102
-4013,40130000,39460000,0,0,1009307,75,3705,256,256,2014,4720563699226509312,741,65536,0,1,65465,36,35,65536,1,0,2,11,2,0,104
-4014,40140000,10000,0,0,256,75,3706,256,256,1,0,742,65536,0,1,65465,36,35,65536,1,0,2,12,3,0,105
-4015,40150000,10000,0,0,256,75,3707,256,256,1,0,743,65536,0,1,65465,36,35,65536,1,0,2,13,4,0,106
-4016,40160000,10000,0,0,256,75,3708,256,256,1,0,744,65536,0,1,65465,36,35,65536,1,0,2,14,5,0,107
-4017,40170000,10000,0,0,256,75,3708,256,256,1,0,745,65536,0,1,65465,36,35,65536,1,0,2,15,6,0,108
-4018,40180000,10000,0,0,256,75,3709,256,256,1,0,746,65536,0,1,65465,36,35,65536,1,0,2,16,7,0,109
-4019,40190000,10000,0,0,256,75,3710,256,256,1,0,746,65536,0,1,65465,36,35,65536,1,0,2,16,7,0,109
-4020,40200000,10000,0,0,256,75,3711,256,256,1,0,747,65536,0,1,65465,36,35,65536,1,0,2,17,8,0,110
-4021,40210000,10000,0,0,256,75,3712,256,256,1,0,747,65536,0,1,65465,36,35,65536,1,0,2,17,8,0,110
-4022,40220000,10000,0,0,256,75,3713,256,256,1,0,748,65536,0,1,65465,36,35,65536,1,0,2,18,9,0,111
-4023,40230000,10000,0,0,256,75,3714,256,256,1,0,748,65536,0,1,65465,36,35,65536,1,0,2,18,9,0,111
-4024,40240000,10000,0,0,256,75,3715,256,256,1,0,749,65536,0,1,65465,36,35,65536,1,0,2,19,10,0,112
-4025,40250000,10000,0,0,256,75,3716,256,256,1,0,749,65536,0,1,65465,36,35,65536,1,0,2,19,10,0,112
-148,1480000,18446744073670781616,0,0,29663,72,182,256,256,0,4895412794951710216,752,65536,0,1,65465,36,35,65536,1,0,0,0,13,2,115
-149,1490000,10000,0,0,256,72,184,256,256,0,0,752,65536,0,1,65465,36,35,65536,1,0,0,0,13,2,115
-150,1500000,10000,0,0,256,72,186,256,256,0,0,753,65536,0,1,65465,36,35,65536,1,0,0,0,14,3,116
-151,1510000,10000,0,0,256,72,188,256,256,0,0,754,65536,0,1,65465,36,35,65536,1,0,0,0,15,4,117
-152,1520000,10000,0,0,256,72,190,256,256,0,0,755,65536,0,1,65465,36,35,65536,1,0,0,0,16,5,118
-153,1530000,10000,0,0,256,72,201,256,256,0,0,755,65536,0,1,65465,36,35,65536,1,0,0,0,16,5,118
-154,1540000,10000,0,0,256,72,203,256,256,0,0,756,65536,0,1,65465,36,35,65536,1,0,0,0,17,6,119
-155,1550000,10000,0,0,256,72,205,256,256,0,0,756,65536,0,1,65465,36,35,65536,1,0,0,0,17,6,119
-156,1560000,10000,0,0,256,72,207,256,256,0,0,757,65536,0,1,65465,36,35,65536,1,0,0,0,18,7,120
-157,1570000,10000,0,0,256,72,209,256,256,0,0,757,65536,0,1,65465,36,35,65536,1,0,0,0,18,7,120
-158,1580000,10000,0,0,256,72,212,256,256,0,0,758,65536,0,1,65465,36,35,65536,1,0,0,0,19,8,121
-159,1590000,10000,0,0,256,72,214,256,256,0,0,758,65536,0,1,65465,36,35,65536,1,0,0,0,19,8,121
-160,1600000,10000,0,0,256,72,216,256,256,0,0,759,65536,0,1,65465,36,35,65536,1,0,0,0,20,9,122
-161,1610000,10000,0,0,256,72,218,256,256,0,0,759,65536,0,1,65465,36,35,65536,1,0,0,0,20,9,122
-68,680000,18446744073708621616,0,0,16300,59,127,256,256,0,4895412794951728693,831,65536,0,0,65453,48,35,65536,1,0,1,1,0,11,124
-69,690000,10000,0,0,256,59,129,256,256,0,0,831,65536,0,0,65453,48,35,65536,1,0,1,1,0,11,124
-70,700000,10000,0,0,256,59,131,256,256,0,0,832,65536,0,0,65453,48,35,65536,1,0,1,2,0,12,125
-71,710000,10000,0,0,256,59,133,256,256,0,0,832,65536,0,0,65453,48,35,65536,1,0,1,2,0,12,125
-72,720000,10000,0,0,256,59,135,256,256,0,0,833,65536,0,0,65453,48,35,65536,1,0,1,3,0,13,126
-73,730000,10000,0,0,256,58,138,256,256,0,0,834,65536,0,0,65453,48,35,65536,1,0,1,4,0,14,127
-74,740000,10000,0,0,256,58,141,256,256,0,0,835,65536,0,0,65453,48,35,65536,1,0,1,5,0,15,128
-75,750000,10000,0,0,256,58,144,256,256,0,0,836,65536,0,0,65453,48,35,65536,1,0,1,6,0,16,129
-76,760000,10000,0,0,256,56,148,256,256,0,0,837,65536,0,0,65453,48,35,65536,1,0,1,7,0,17,130
-77,770000,10000,0,0,256,56,150,256,256,0,0,837,65536,0,0,65453,48,35,65536,1,0,1,7,0,17,130
-78,780000,10000,0,0,256,56,152,256,256,0,0,838,65536,0,0,65453,48,35,65536,1,0,1,8,0,18,131
-79,790000,10000,0,0,256,56,154,256,256,0,0,839,65536,0,0,65453,48,35,65536,1,0,1,9,0,19,132
-80,800000,10000,0,0,256,56,156,256,256,0,0,840,65536,0,0,65453,48,35,65536,1,0,1,10,0,20,133
-4026,40260000,39460000,0,0,1009307,80,3717,256,256,2027,4720563699226509312,841,65536,0,1,65441,48,47,65536,1,0,2,11,1,0,134
-4027,40270000,10000,0,0,256,80,3718,256,256,1,0,842,65536,0,1,65441,48,47,65536,1,0,2,12,2,0,135
-4028,40280000,10000,0,0,256,80,3719,256,256,1,0,842,65536,0,1,65441,48,47,65536,1,0,2,12,2,0,135
-4029,40290000,10000,0,0,256,80,3720,256,256,1,0,843,65536,0,1,65441,48,47,65536,1,0,2,13,3,0,136
-4030,40300000,10000,0,0,256,80,3720,256,256,1,0,844,65536,0,1,65441,48,47,65536,1,0,2,14,4,0,137
-4031,40310000,10000,0,0,256,80,3721,256,256,1,0,845,65536,0,1,65441,48,47,65536,1,0,2,15,5,0,138
-4032,40320000,10000,0,0,256,80,3722,256,256,1,0,845,65536,0,1,65441,48,47,65536,1,0,2,15,5,0,138
-4033,40330000,10000,0,0,256,80,3723,256,256,1,0,846,65536,0,1,65441,48,47,65536,1,0,2,16,6,0,139
-4034,40340000,10000,0,0,256,80,3724,256,256,1,0,847,65536,0,1,65441,48,47,65536,1,0,2,17,7,0,140
-4035,40350000,10000,0,0,256,80,3725,256,256,1,0,848,65536,0,1,65441,48,47,65536,1,0,2,18,8,0,141
-4036,40360000,10000,0,0,256,80,3726,256,256,1,0,848,65536,0,1,65441,48,47,65536,1,0,2,18,8,0,141
-4037,40370000,10000,0,0,256,80,3727,256,256,1,0,848,65536,0,1,65441,48,47,65536,1,0,2,18,8,0,141
-4038,40380000,10000,0,0,256,80,3728,256,256,1,0,849,65536,0,1,65441,48,47,65536,1,0,2,19,9,0,142
-4039,40390000,10000,0,0,256,80,3729,256,256,1,0,849,65536,0,1,65441,48,47,65536,1,0,2,19,9,0,142
-162,1620000,18446744073670781616,0,0,33247,73,220,256,256,0,4895412794951710216,852,65536,0,1,65441,48,47,65536,1,0,0,0,12,2,145
-163,1630000,10000,0,0,256,73,222,256,256,0,0,853,65536,0,1,65441,48,47,65536,1,0,0,0,13,3,146
-164,1640000,10000,0,0,256,73,226,256,256,0,0,854,65536,0,1,65441,48,47,65536,1,0,0,0,14,4,147
-165,1650000,10000,0,0,256,73,228,256,256,0,0,855,65536,0,1,65441,48,47,65536,1,0,0,0,15,5,148
-166,1660000,10000,0,0,256,73,242,256,256,0,0,856,65536,0,1,65441,48,47,65536,1,0,0,0,16,6,149
-167,1670000,10000,0,0,256,73,245,256,256,0,0,856,65536,0,1,65441,48,47,65536,1,0,0,0,16,6,149
-168,1680000,10000,0,0,256,73,247,256,256,0,0,857,65536,0,1,65441,48,47,65536,1,0,0,0,17,7,150
-169,1690000,10000,0,0,256,73,249,256,256,0,0,858,65536,0,1,65441,48,47,65536,1,0,0,0,18,8,151
-170,1700000,10000,0,0,256,73,251,256,256,0,0,859,65536,0,1,65441,48,47,65536,1,0,0,0,19,9,152
-171,1710000,10000,0,0,256,73,258,256,256,0,0,859,65536,0,1,65441,48,47,65536,1,0,0,0,19,9,152
-172,1720000,10000,0,0,256,71,260,256,256,0,0,860,65536,0,1,65441,48,47,65536,1,0,0,0,20,10,153
-173,1730000,10000,0,0,256,71,280,256,256,0,0,861,65536,0,1,65441,48,47,65536,1,0,0,0,21,11,154
-174,1740000,10000,0,0,256,71,287,256,256,0,0,861,65536,0,1,65441,48,47,65536,1,0,0,0,21,11,154
-175,1750000,10000,0,0,256,71,290,256,256,0,0,862,65536,0,1,65441,48,47,65536,1,0,0,0,22,12,155
-81,810000,18446744073708611616,0,0,19628,58,158,256,256,0,4895412794951728688,933,65533,3,0,65421,60,55,65536,1,0,1,2,0,14,157
-82,820000,10000,0,0,256,58,160,256,256,0,0,933,65533,3,0,65421,60,55,65536,1,0,1,2,0,14,157
-83,830000,10000,0,0,256,58,164,256,256,0,0,934,65533,3,0,65421,60,55,65536,1,0,1,3,0,15,158
-84,840000,10000,0,0,256,58,166,256,256,0,0,934,65533,3,0,65421,60,55,65536,1,0,1,3,0,15,158
-85,850000,10000,0,0,256,58,170,256,256,0,0,935,65533,3,0,65421,60,55,65536,1,0,1,4,0,16,159
-86,860000,10000,0,0,256,58,172,256,256,0,0,935,65533,3,0,65421,60,55,65536,1,0,1,4,0,16,159
-87,870000,10000,0,0,256,58,174,256,256,0,0,936,65533,3,0,65421,60,55,65536,1,0,1,5,0,17,160
-88,880000,10000,0,0,256,58,176,256,256,0,0,936,65533,3,0,65421,60,55,65536,1,0,1,5,0,17,160
-89,890000,10000,0,0,256,58,178,256,256,0,0,937,65533,3,0,65421,60,55,65536,1,0,1,6,0,18,161
-90,900000,10000,0,0,256,58,180,256,256,0,0,937,65533,3,0,65421,60,55,65536,1,0,1,6,0,18,161
-91,910000,10000,0,0,256,58,182,256,256,0,0,938,65533,3,0,65421,60,55,65536,1,0,1,7,0,19,162
-92,920000,10000,0,0,256,58,184,256,256,0,0,939,65533,3,0,65421,60,55,65536,1,0,1,8,0,20,163
-93,930000,10000,0,0,256,58,186,256,256,0,0,940,65533,3,0,65421,60,55,65536,1,0,1,9,0,21,164
-4040,40400000,39470000,0,0,1009562,82,3716,256,256,2041,4720565041403789312,942,65533,3,1,65418,60,58,65536,1,0,2,11,2,0,166
-176,1760000,18446744073670911616,0,0,36829,71,276,256,256,0,4895412794951710280,946,65533,3,1,65418,60,58,65536,1,0,0,0,6,3,170
-4041,40410000,38650000,0,0,995689,82,3717,256,256,2042,4720454982866829312,948,65533,3,1,65418,60,58,65536,1,0,2,2,8,0,172
-4042,40420000,10000,0,0,256,82,3718,256,256,1,0,948,65533,3,1,65418,60,58,65536,1,0,2,2,8,0,172
-4043,40430000,10000,0,0,256,82,3719,256,256,1,0,949,65533,3,1,65418,60,58,65536,1,0,2,3,9,0,173
-4044,40440000,10000,0,0,256,82,3788,256,256,1,0,950,65533,3,1,65418,60,58,65536,1,0,2,4,10,0,174
-4045,40450000,10000,0,0,256,82,3817,256,256,1,0,951,65533,3,1,65418,60,58,65536,1,0,2,5,11,0,175
-4046,40460000,10000,0,0,256,82,3818,256,256,1,0,952,65533,3,1,65418,60,58,65536,1,0,2,6,12,0,176
-4047,40470000,10000,0,0,256,82,3819,256,256,1,0,952,65533,3,1,65418,60,58,65536,1,0,2,6,12,0,176
-4048,40480000,10000,0,0,256,82,3820,256,256,1,0,952,65533,3,1,65418,60,58,65536,1,0,2,6,12,0,176
-4049,40490000,10000,0,0,256,82,3821,256,256,1,0,953,65533,3,1,65418,60,58,65536,1,0,2,7,13,0,177
-4050,40500000,10000,0,0,256,82,3822,256,256,1,0,953,65533,3,1,65418,60,58,65536,1,0,2,7,13,0,177
-4051,40510000,10000,0,0,256,82,3823,256,256,1,0,954,65533,3,1,65418,60,58,65536,1,0,2,8,14,0,178
-4052,40520000,10000,0,0,256,80,4317,256,256,1,0,954,65533,3,1,65418,60,58,65536,1,0,2,8,14,0,178
-4053,40530000,10000,0,0,256,80,4318,256,256,1,0,955,65533,3,1,65418,60,58,65536,1,0,2,9,15,0,179
-177,1770000,18446744073670791616,0,0,37085,71,273,256,256,0,4895412794951710221,956,65533,3,1,65418,60,58,65536,1,0,2,10,16,0,180
-178,1780000,10000,0,0,256,70,283,256,256,0,0,956,65533,3,1,65418,60,58,65536,1,0,2,10,16,0,180
-179,1790000,10000,0,0,256,70,285,256,256,0,0,957,65533,3,1,65418,60,58,65536,1,0,0,0,17,1,181
-180,1800000,10000,0,0,256,70,290,256,256,0,0,958,65533,3,1,65418,60,58,65536,1,0,0,0,18,2,182
-181,1810000,10000,0,0,256,70,295,256,256,0,0,958,65533,3,1,65418,60,58,65536,1,0,0,0,18,2,182
-182,1820000,10000,0,0,256,70,304,256,256,0,0,959,65533,3,1,65418,60,58,65536,1,0,0,0,19,3,183
-183,1830000,10000,0,0,256,70,315,256,256,0,0,959,65533,3,1,65418,60,58,65536,1,0,0,0,19,3,183
-184,1840000,10000,0,0,256,70,324,256,256,0,0,960,65533,3,1,65418,60,58,65536,1,0,0,0,20,4,184
-185,1850000,10000,0,0,256,70,326,256,256,0,0,961,65533,3,1,65418,60,58,65536,1,0,0,0,21,5,185
-186,1860000,10000,0,0,256,69,335,256,256,0,0,961,65533,3,1,65418,60,58,65536,1,0,0,0,21,5,185
-187,1870000,10000,0,0,256,69,338,256,256,0,0,962,65533,3,1,65418,60,58,65536,1,0,0,0,22,6,186
-188,1880000,10000,0,0,256,69,363,256,256,0,0,962,65533,3,1,65418,60,58,65536,1,0,0,0,22,6,186
-189,1890000,10000,0,0,256,67,382,256,256,0,0,963,65533,3,1,65418,60,58,65536,1,0,0,0,23,7,187
-94,940000,18446744073708601616,0,0,22956,60,188,256,256,0,4895412794951728683,1031,39891,42131,0,65406,72,58,65536,1,0,1,1,0,8,188
-95,950000,10000,0,0,256,60,192,256,256,0,0,1032,39891,42131,0,65406,72,58,65536,1,0,1,2,0,9,189
-96,960000,10000,0,0,256,58,194,256,256,0,0,1034,39891,42131,0,65406,72,58,65536,1,0,1,4,0,11,191
-97,970000,10000,0,0,256,58,197,256,256,0,0,1035,39891,42131,0,65406,72,58,65536,1,0,1,5,0,12,192
-98,980000,10000,0,0,256,58,209,256,256,0,0,1037,39891,42131,0,65406,72,58,65536,1,0,1,7,0,14,194
-99,990000,10000,0,0,256,56,275,256,256,0,0,1038,39891,42131,0,65406,72,58,65536,1,0,1,8,0,15,195
-100,1000000,10000,0,0,256,55,281,256,256,0,0,1040,39891,42131,0,65406,72,58,65536,1,0,1,10,0,17,197
-101,1010000,10000,0,0,256,55,283,256,256,0,0,1041,39891,42131,0,65406,72,58,65536,1,0,1,11,0,18,198
-102,1020000,10000,0,0,256,55,286,256,256,0,0,1042,39891,42131,0,65406,72,58,65536,1,0,1,12,0,19,199
-103,1030000,10000,0,0,256,55,289,256,256,0,0,1044,39891,42131,0,65406,72,58,65536,1,0,1,14,0,21,201
-104,1040000,10000,0,0,256,55,292,256,256,0,0,1045,39891,42131,0,65406,72,58,65536,1,0,1,15,0,22,202
-105,1050000,10000,0,0,256,55,295,256,256,0,0,1046,39891,42131,0,65406,72,58,65536,1,0,1,16,0,23,203
-106,1060000,10000,0,0,256,53,297,256,256,0,0,1048,39891,42131,0,65406,72,58,65536,1,0,1,18,0,25,205
-107,1070000,10000,0,0,256,53,300,256,256,0,0,1050,39891,42131,0,65406,72,58,65536,1,0,1,20,0,27,207
-4054,40540000,39470000,0,0,1009562,81,4319,256,256,2055,4720565041403789312,1053,39891,42131,1,65394,72,70,65536,1,0,2,23,2,0,210
-4055,40550000,10000,0,0,256,81,4320,256,256,1,0,1054,39891,42131,1,65394,72,70,65536,1,0,2,24,3,0,211
-4056,40560000,10000,0,0,256,81,4321,256,256,1,0,1057,39891,42131,1,65394,72,70,65536,1,0,2,27,6,0,214
-4057,40570000,10000,0,0,256,81,4322,256,256,1,0,1059,39891,42131,1,65394,72,70,65536,1,0,2,29,8,0,216
-4058,40580000,10000,0,0,256,81,4323,256,256,1,0,1060,39891,42131,1,65394,72,70,65536,1,0,2,30,9,0,217
-4059,40590000,10000,0,0,256,81,4324,256,256,1,0,1063,39891,42131,1,65394,72,70,65536,1,0,2,33,12,0,220
-4060,40600000,10000,0,0,256,82,4326,256,256,1,0,1065,39891,42131,1,65394,72,70,65536,1,0,2,35,14,0,222
-4061,40610000,10000,0,0,256,82,4327,256,256,1,0,1067,39891,42131,1,65394,72,70,65536,1,0,2,37,16,0,224
-4062,40620000,10000,0,0,256,82,4328,256,256,1,0,1070,39891,42131,1,65394,72,70,65536,1,0,2,40,19,0,227
-4063,40630000,10000,0,0,256,82,4329,256,256,1,0,1071,39891,42131,1,65394,72,70,65536,1,0,2,41,20,0,228
-4064,40640000,10000,0,0,256,82,4330,256,256,1,0,1073,39891,42131,1,65394,72,70,65536,1,0,2,43,22,0,230
-4065,40650000,10000,0,0,256,82,4682,256,256,1,0,1076,39891,42131,1,65394,72,70,65536,1,0,2,46,25,0,233
-4066,40660000,10000,0,0,256,82,4683,256,256,1,0,1078,39891,42131,1,65394,72,70,65536,1,0,2,48,27,0,235
-190,1900000,18446744073670791616,0,0,40413,66,356,256,256,0,4895412794951710221,1081,39891,42131,1,65394,72,70,65536,1,0,0,0,30,2,238
-191,1910000,10000,0,0,256,66,359,256,256,0,0,1083,39891,42131,1,65394,72,70,65536,1,0,0,0,32,4,240
-192,1920000,10000,0,0,256,66,361,256,256,0,0,1084,39891,42131,1,65394,72,70,65536,1,0,0,0,33,5,241
-193,1930000,10000,0,0,256,66,368,256,256,0,0,1086,39891,42131,1,65394,72,70,65536,1,0,0,0,35,7,243
-194,1940000,10000,0,0,256,66,367,256,256,0,0,1088,39891,42131,1,65394,72,70,65536,1,0,0,0,37,9,245
-195,1950000,10000,0,0,256,66,369,256,256,0,0,1090,39891,42131,1,65394,72,70,65536,1,0,0,0,39,11,247
-196,1960000,10000,0,0,256,66,376,256,256,0,0,1091,39891,42131,1,65394,72,70,65536,1,0,0,0,40,12,248
-197,1970000,10000,0,0,256,66,379,256,256,0,0,1094,39891,42131,1,65394,72,70,65536,1,0,0,0,43,15,251
-198,1980000,10000,0,0,256,66,381,256,256,0,0,1096,39891,42131,1,65394,72,70,65536,1,0,0,0,45,17,253
-199,1990000,10000,0,0,256,66,384,256,256,0,0,1098,39891,42131,1,65394,72,70,65536,1,0,0,0,47,19,255
-200,2000000,10000,0,0,256,66,391,256,256,0,0,1100,39891,42131,1,65394,72,70,65536,1,0,0,0,49,21,257
-201,2010000,10000,0,0,256,66,393,256,256,0,0,1102,39891,42131,1,65394,72,70,65536,1,1,0,0,51,23,0
-202,2020000,10000,0,0,256,66,400,256,256,0,0,1104,39891,42131,1,65394,72,70,65536,1,2,0,0,53,25,0
-203,2030000,10000,0,0,256,66,427,256,256,0,0,1106,39891,42131,1,65394,72,70,65536,1,3,0,0,55,27,0
-4067,40670000,38640000,0,0,995433,82,4684,256,256,2068,4720453640689549312,1130,39891,42131,1,65387,72,77,65536,1,4,0,0,57,29,0

experiments/bare_metal/runs/doe-amd64-20260914-000829.csv

@@ -0,0 +1,2 @@
+tick_number,elapsed_ns,tick_interval_ns,cache_hits_delta,bucket_hits_delta,word_executions_delta,hot_word_count,avg_word_heat_q48,window_width,actual_window_size,predicted_label_hits,jitter_bits,apic_ticks,time_trust_q48,variance_q48,vm_call_depth_max,hera_heat_q48,hermes_heat_q48,artemis_heat_q48,fleet_k_q48,fleet_conserved,switch_count_cumulative,switch_current_slot,switch_hera_readiness,switch_hermes_readiness,switch_artemis_readiness,switch_ticks_since
+104,1040000,890000,0,0,15667,80,42,256,256,0,4695806354533646336,453,65536,0,1,65536,0,0,65536,1,0,0,0,2,2,2

experiments/bare_metal/runs/doe-amd64-20260914-001431.csv

@@ -0,0 +1,2 @@
+tick_number,elapsed_ns,tick_interval_ns,cache_hits_delta,bucket_hits_delta,word_executions_delta,hot_word_count,avg_word_heat_q48,window_width,actual_window_size,predicted_label_hits,jitter_bits,apic_ticks,time_trust_q48,variance_q48,vm_call_depth_max,hera_heat_q48,hermes_heat_q48,artemis_heat_q48,fleet_k_q48,fleet_conserved,switch_count_cumulative,switch_current_slot,switch_hera_readiness,switch_hermes_readiness,switch_artemis_readiness,switch_ticks_since
+104,1040000,890000,0,0,15665,80,42,256,256,0,4695806354533646336,436,65536,0,1,65536,0,0,65536,1,0,0,0,4,4,4

experiments/bare_metal/runs/doe-amd64-20260914-002852.csv

@@ -0,0 +1,2 @@
+tick_number,elapsed_ns,tick_interval_ns,cache_hits_delta,bucket_hits_delta,word_executions_delta,hot_word_count,avg_word_heat_q48,window_width,actual_window_size,predicted_label_hits,jitter_bits,apic_ticks,time_trust_q48,variance_q48,vm_call_depth_max,hera_heat_q48,hermes_heat_q48,artemis_heat_q48,fleet_k_q48,fleet_conserved,switch_count_cumulative,switch_current_slot,switch_hera_readiness,switch_hermes_readiness,switch_artemis_readiness,switch_ticks_since
+104,1040000,890000,0,0,15665,80,42,256,256,0,4695806354533646336,479,65536,0,1,65536,0,0,65536,1,0,0,0,5,5,5

experiments/bare_metal/runs/doe-amd64-20260914-005530.csv

@@ -0,0 +1,2 @@
+tick_number,elapsed_ns,tick_interval_ns,cache_hits_delta,bucket_hits_delta,word_executions_delta,hot_word_count,avg_word_heat_q48,window_width,actual_window_size,predicted_label_hits,jitter_bits,apic_ticks,time_trust_q48,variance_q48,vm_call_depth_max,hera_heat_q48,hermes_heat_q48,artemis_heat_q48,fleet_k_q48,fleet_conserved,switch_count_cumulative,switch_current_slot,switch_hera_readiness,switch_hermes_readiness,switch_artemis_readiness,switch_ticks_since
+104,1040000,890000,0,0,15665,80,42,256,256,0,4695806354533646336,405,65536,0,1,65536,0,0,65536,1,0,0,0,5,5,5

include/starkernel/capsule_vm_switch_signal.h

@@ -78,8 +78,21 @@ VMUuid sk_vm_switch_signal_take_pending(void);
 /* Call once, from the same checkpoint, immediately after a switch
  * sk_vm_switch_signal_take_pending() requested actually executes (not if
  * the target turned out invalid/self) -- feeds the DoE CSV counters
- * below. */
+ * below. Also resets `target_id`'s own readiness/has_work directly
-void sk_vm_switch_signal_note_switch_performed(void);
+ * (Stage 3 follow-on correction, 2026-09-14) -- see the .c file's own doc
+ * comment on why this can't be left to tick()'s current-slot polling. */
+void sk_vm_switch_signal_note_switch_performed(VMUuid target_id);
+
+/* Message-arrival eligibility hook (FABRIC-3.md §XXVIII Stage 3 follow-on,
+ * 2026-09-14): mark that VM `vm_id` was just sent a message (the FORTH-side
+ * MSG-SEND hook in capsules/common/messaging.4th calls this via the new
+ * SWITCH-MARK-WORK primitive, mainline, single-writer). Consulted by
+ * sk_vm_switch_signal_tick()'s own readiness->pending decision so a VM
+ * with nothing recently sent to it never becomes a switch target purely by
+ * sitting idle long enough -- closes the wasteful (but, since the Stage 3
+ * stack-ownership fix, no longer corrupting) trampoline-bounce cycle for
+ * an idle participant. No-op for an unregistered vm_id. */
+void sk_vm_switch_signal_mark_work(VMUuid vm_id);
 
 /* DoE CSV read-only exposure (FABRIC-3.md §XXVIII Stage 3 follow-on,
  * 2026-09-13) -- all of this state already existed for the switch

include/starkernel/vm/switch.h

@@ -46,6 +46,15 @@ struct VM;
 
 int sk_vm_context_switch(struct VM *from, struct VM *to);
 
+/* FABRIC-3.md §XXVIII Stage 3 follow-on (2026-09-14): which VM is
+ * currently physically running, tracked by the switch mechanism itself --
+ * see switch.c's own doc comment on g_switch_current_vm for why this
+ * exists instead of reusing vm_log_attributed_vm(). sk_vm_switch_set_
+ * current() seeds the initial value (whoever is running before any
+ * switch has ever happened) -- call once, at Stage 3 registration time. */
+struct VM *sk_vm_switch_current_vm(void);
+void sk_vm_switch_set_current(struct VM *vm);
+
 #endif /* __STARKERNEL__ */
 
 #endif /* STARKERNEL_VM_SWITCH_H */

src/starkernel/capsule/capsule_vm_switch_signal.c

@@ -29,7 +29,7 @@
 
 #include "starkernel/capsule_vm_switch_signal.h"
 #include "vm.h"
-#include "starkernel/log_attrib.h" /* vm_log_attributed_vm() */
+#include "starkernel/vm/switch.h" /* sk_vm_switch_current_vm() -- see below */
 #include <stddef.h>
 
 /* Headroom beyond today's 3 participants (Hera/Hermes/Artemis) -- see
@@ -49,6 +49,11 @@
 typedef struct {
     VMUuid   vm_id;
     uint32_t readiness;
+    int      has_work; /* Stage 3 follow-on (2026-09-14): set by
+                         * sk_vm_switch_signal_mark_work() (mainline,
+                         * MSG-SEND hook), cleared here in tick() the
+                         * instant this slot becomes current -- see that
+                         * function's own doc comment in the header. */
 } sk_switch_slot_entry_t;
 
 static sk_switch_slot_entry_t g_slots[SK_SWITCH_MAX_SLOTS];
@@ -73,6 +78,7 @@ int sk_vm_switch_signal_register(VMUuid vm_id) {
     if (g_slot_count >= SK_SWITCH_MAX_SLOTS) return -1;
     g_slots[g_slot_count].vm_id     = vm_id;
     g_slots[g_slot_count].readiness = 0;
+    g_slots[g_slot_count].has_work  = 0;
     return g_slot_count++;
 }
 
@@ -80,8 +86,21 @@ void sk_vm_switch_signal_tick(void) {
     VM *current;
     int current_slot, i;
 
-    current = vm_log_attributed_vm();
+    /* FABRIC-3.md §XXVIII Stage 3 follow-on correction (2026-09-14): was
-    if (!current) return; /* nothing interpreting right now (boot/driver/HAL context) */
+     * vm_log_attributed_vm() -- wrong source. That tracks nested
+     * vm_interpret() calls for log attribution and has no way to know a
+     * VM is running while parked inside switch.c's own raw-C trampoline
+     * (sk_vm_switch_entry()), which never itself calls vm_interpret(). A
+     * VM that only ever ran the trampoline was therefore never seen as
+     * "current," so its own readiness/has_work below never reset --
+     * tick() re-armed the very next timer tick, forever, once nothing
+     * else happened to be independently flipping attribution around it
+     * (found live: a switch storm, 101% CPU, log frozen). sk_vm_switch_
+     * current_vm() is authoritative instead: the switch mechanism itself
+     * updates it on every switch, so it reflects who is physically
+     * running regardless of whether that VM ever calls vm_interpret(). */
+    current = sk_vm_switch_current_vm();
+    if (!current) return; /* boot: no switch has happened yet, not seeded */
 
     current_slot = slot_for_vm_id(current->stadium_vm_id);
     if (current_slot < 0) return; /* current VM isn't a registered participant */
@@ -92,6 +111,7 @@ void sk_vm_switch_signal_tick(void) {
     for (i = 0; i < g_slot_count; i++) {
         if (i == current_slot) {
             g_slots[i].readiness = 0;
+            g_slots[i].has_work  = 0;
         } else {
             g_slots[i].readiness++;
         }
@@ -99,7 +119,9 @@ void sk_vm_switch_signal_tick(void) {
 
     if (!g_pending) {
         for (i = 0; i < g_slot_count; i++) {
-            if (i != current_slot && g_slots[i].readiness >= SK_SWITCH_READINESS_THRESHOLD) {
+            if (i != current_slot &&
+                g_slots[i].readiness >= SK_SWITCH_READINESS_THRESHOLD &&
+                g_slots[i].has_work) {
                 g_pending = 1;
                 g_pending_target = g_slots[i].vm_id;
                 break;
@@ -114,11 +136,38 @@ VMUuid sk_vm_switch_signal_take_pending(void) {
     return g_pending_target;
 }
 
-void sk_vm_switch_signal_note_switch_performed(void) {
+void sk_vm_switch_signal_note_switch_performed(VMUuid target_id) {
+    /* FABRIC-3.md §XXVIII Stage 3 follow-on correction (2026-09-14):
+     * reset the target's own readiness/has_work HERE, deterministically,
+     * at the switch decision point -- not by waiting for tick()'s
+     * current-slot polling to observe it running. That polling depends on
+     * sk_vm_switch_current_vm() catching a real ISR tick during whatever
+     * window the target is genuinely "current" for, and for a VM whose
+     * only production behavior is switch.c's placeholder trampoline (an
+     * immediate yield-back), that window can be as small as a few
+     * instructions -- too narrow for a timer tick to reliably land in.
+     * Without this, the target's eligibility never clears, tick() re-arms
+     * on the very next timer tick, and the result is a continuous switch
+     * storm (found live: 101% CPU, zero forward progress). This makes
+     * correctness independent of ISR timing; current_slot (via
+     * sk_vm_switch_current_vm()/tick()) remains useful as a DoE-observable
+     * value and for excluding the running slot from readiness accrual,
+     * but is no longer load-bearing for storm prevention. */
+    int slot = slot_for_vm_id(target_id);
+    if (slot >= 0) {
+        g_slots[slot].readiness = 0;
+        g_slots[slot].has_work  = 0;
+    }
     g_switch_count++;
     g_ticks_since_switch = 0;
 }
 
+void sk_vm_switch_signal_mark_work(VMUuid vm_id) {
+    int slot = slot_for_vm_id(vm_id);
+    if (slot < 0) return;
+    g_slots[slot].has_work = 1;
+}
+
 uint64_t sk_vm_switch_signal_switch_count(void) {
     return g_switch_count;
 }

src/starkernel/capsule/mama_forth_words.c

@@ -55,6 +55,7 @@
 #include "starkernel/capsule_vm_physics.h"
 #include "starkernel/vm/vm_internal.h"
 #include "starkernel/vm/stadium.h" /* item 4.2 -- STADIUM-* words */
+#include "starkernel/capsule_vm_switch_signal.h" /* FABRIC-3.md §XXVIII Stage 3 follow-on -- SWITCH-MARK-WORK */
 #include "starkernel/vm/stadium_words.h" /* item 4.2 -- stadium_words_resident_heat() */
 #include "starkernel/repl.h"
 #include "starkernel/capsule_generated.h"
@@ -785,6 +786,43 @@ static void mama_word_vm_exec(VM *vm)
     /* Stack clean on exit */
 }
 
+/**
+ * @brief SWITCH-MARK-WORK ( name-caddr name-u -- )
+ * FABRIC-3.md §XXVIII Stage 3 follow-on (2026-09-14): message-arrival
+ * eligibility hook. Called from MSG-SEND (capsules/common/messaging.4th)
+ * every time a message is sent to a VM, so the Stage 3 switch signal can
+ * tell "has recently been sent something" apart from "has just been idle
+ * long enough" before ever selecting it as a switch target. Silently
+ * ignores a malformed or unknown name -- this fires on the hot path of
+ * every message send, not a user-facing command, so it must never error
+ * or spam the console.
+ */
+static void mama_word_switch_mark_work(VM *vm)
+{
+    char        name[VM_NAME_MAX];
+    cell_t      u, caddr;
+    uint32_t    i;
+    VMRegistryEntry entry;
+
+    if (vm->dsp < 2) { vm->error = 1; return; }
+
+    u     = vm_pop(vm);
+    caddr = vm_pop(vm);
+
+    if (u <= 0 || (uint32_t)u >= VM_NAME_MAX) return;
+
+    {
+        const uint8_t *p = vm_ptr(vm, (vaddr_t)caddr);
+        if (!p) return;
+        for (i = 0; i < (uint32_t)u; i++) name[i] = (char)p[i];
+        name[u] = '\0';
+    }
+
+    if (capsule_vm_find_by_name_nocase(name, &entry) == 0) {
+        sk_vm_switch_signal_mark_work(entry.vm_id);
+    }
+}
+
 /**
  * @brief VM-CALL ( cmd-caddr cmd-u vm-name-caddr vm-name-u -- n )
  * Like VM-EXEC but pops one cell from the target VM's TOS and pushes
@@ -1653,6 +1691,7 @@ void register_mama_forth_words(VM *vm)
     register_word(vm, "VM-PHYSICS-STATUS", mama_word_vm_physics_status);
     register_word(vm, "VM-STEP", mama_word_vm_step);
     register_word(vm, "VM-EXEC", mama_word_vm_exec);
+    register_word(vm, "SWITCH-MARK-WORK", mama_word_switch_mark_work);
     register_word(vm, "VM-CALL", mama_word_vm_call);
     register_word(vm, "VM-HEAT", mama_word_vm_heat);
     /* FABRIC-3.md SXX: the 8 STADIUM-* primitives register_child_vm_words()
@@ -1711,6 +1750,7 @@ void register_mama_forth_words(VM *vm)
     register_word(vm, "VM-PHYSICS-STATUS", mama_word_vm_physics_status);
     register_word(vm, "VM-STEP", mama_word_vm_step);
     register_word(vm, "VM-EXEC", mama_word_vm_exec);
+    register_word(vm, "SWITCH-MARK-WORK", mama_word_switch_mark_work);
     register_word(vm, "VM-CALL", mama_word_vm_call);
     register_word(vm, "VM-HEAT", mama_word_vm_heat);
     /* FABRIC-3.md SXX: the 8 STADIUM-* primitives register_child_vm_words()
@@ -1946,6 +1986,7 @@ void register_child_vm_words(VM *vm)
     register_word(vm, "STOP",    mama_word_stop);
     register_word(vm, "EXEC",    mama_word_exec);
     register_word(vm, "VM-EXEC", mama_word_vm_exec);
+    register_word(vm, "SWITCH-MARK-WORK", mama_word_switch_mark_work);
     register_word(vm, "VM-CALL", mama_word_vm_call);
     register_word(vm, "VM-HEAT", mama_word_vm_heat);
     /* USE (FABRIC-2.md §F.24): not console-specific -- any VM can

src/starkernel/kernel_main.c

@@ -64,6 +64,7 @@ EFI_RUNTIME_SERVICES *g_sk_runtime_services = NULL;
 #include "starkernel/capsule_birth.h"  /* capsule_birth_mama, capsule_find_mama_init */
 #include "starkernel/capsule_zuse_boot.h" /* capsule_zuse_boot_load_root_pubkey */
 #include "starkernel/capsule_vm_switch_signal.h" /* FABRIC-3.md §XXVIII Stage 3 */
+#include "starkernel/vm/switch.h" /* sk_vm_switch_set_current() -- Stage 3 follow-on */
 #include "starkernel/artemis_sig.h" /* artemis_sig_check/genesis_stamp */
 #include "starkernel/kmalloc.h"
 #include "starkernel/repl.h"
@@ -997,6 +998,11 @@ static void kernel_main_deep(BootInfo *boot_info) {
         VMRegistryEntry hera_entry, hermes_entry, artemis_entry;
         if (capsule_vm_registry_get(vm_uuid_hera(), &hera_entry) == 0) {
             sk_vm_switch_signal_register(hera_entry.vm_id);
+            /* Seed the switch mechanism's own "who is running" tracker
+             * (FABRIC-3.md §XXVIII Stage 3 follow-on, 2026-09-14) -- Hera
+             * is genuinely the one running here, before any switch has
+             * ever happened. */
+            sk_vm_switch_set_current(mama);
         }
         if (capsule_vm_find_by_name_nocase("Hermes", &hermes_entry) == 0 &&
             hermes_entry.state == VM_STATE_LIVE) {

src/starkernel/vm/switch.c

@@ -51,6 +51,26 @@ extern uint64_t sk_vm_switch_prime(uint64_t stack_top, void *entry);
  * who most recently switched into it does. */
 static VM *g_switch_entry_vm;
 
+/* FABRIC-3.md §XXVIII Stage 3 follow-on (2026-09-14): which VM is
+ * currently running, from the switch mechanism's own point of view --
+ * independent of vm_log_attributed_vm() (vm_core.c), which is scoped to
+ * nested vm_interpret() calls for log-source attribution and has no way
+ * to know a VM is "running" while parked inside this file's own raw C
+ * trampoline (sk_vm_switch_entry()), never itself calling vm_interpret().
+ * sk_vm_switch_signal_tick() (capsule_vm_switch_signal.c) consults this
+ * instead of vm_log_attributed_vm() for exactly that reason -- see its
+ * own updated comment. Single-writer-mainline, same discipline as
+ * g_switch_entry_vm above: set unconditionally on every switch, by the
+ * only code path that can ever change who is physically running.
+ * Seeded once at boot via sk_vm_switch_set_current() for whichever VM is
+ * running before any switch has ever happened (Hera, at Stage 3
+ * registration time -- kernel_main.c). */
+static VM *g_switch_current_vm;
+
+VM *sk_vm_switch_current_vm(void) { return g_switch_current_vm; }
+
+void sk_vm_switch_set_current(VM *vm) { g_switch_current_vm = vm; }
+
 /**
  * sk_vm_switch_entry - trampoline for a VM's first-ever entry.
  *
@@ -64,6 +84,18 @@ static VM *g_switch_entry_vm;
  * first. Must never fall off the end -- there is no legitimate return
  * address below a synthetic first-entry frame, unlike an ordinary
  * function.
+ *
+ * FABRIC-3.md §XXVIII Stage 3 follow-on (2026-09-14): an attempt to make
+ * this attributable by calling vm_interpret(self, "MSG-TICK") here was
+ * tried and reverted -- it introduced a second, distinct hang (a stall in
+ * sk_repl_headless_wait()'s WIREBIND-attachment wait, not root-caused) in
+ * place of the switch-storm it was meant to fix. The switch-storm's real
+ * cause (sk_vm_switch_signal_tick()'s "who is current" check via
+ * vm_log_attributed_vm() never seeing a VM that only ever runs this raw
+ * C trampoline) is instead fixed at the source in switch.c/
+ * capsule_vm_switch_signal.c: sk_vm_context_switch() now tracks "current"
+ * itself, independent of vm_interpret()'s own attribution bookkeeping.
+ * This placeholder's behavior is therefore unchanged from Stage 2.
  */
 void sk_vm_switch_entry(void) {
     VM *self = g_switch_entry_vm;
@@ -95,12 +127,14 @@ int sk_vm_context_switch(VM *from, VM *to) {
 
     capsule_vm_set_state(to->stadium_vm_id, VM_STATE_LIVE);
     capsule_vm_set_state(from->stadium_vm_id, VM_STATE_SWITCHED_OUT);
+    g_switch_current_vm = to;
 
     sk_vm_switch_to(&from->native_stack_saved_sp, new_sp);
 
     /* Resumes here only once something later switches back to `from` --
      * from `from`'s own point of view, this call simply took a while. */
     capsule_vm_set_state(from->stadium_vm_id, VM_STATE_LIVE);
+    g_switch_current_vm = from;
     return 0;
 }
 

src/starkernel/vm/vm_core.c

@@ -920,14 +920,16 @@ void execute_colon_word(VM* vm)
          * `vm`, which could be an arbitrary number of ticks later --
          * calling it after would attribute switch_count_cumulative/
          * switch_ticks_since to the wrong (resume) event instead of the
-         * actual switch-out this counts. */
+         * actual switch-out this counts. It also resets target_id's own
+         * eligibility state directly (2026-09-14 correction) -- see its
+         * own doc comment for why that can't be left to ISR polling. */
         if (sk_vm_at_outermost_interpret()) {
             VMUuid target_id = sk_vm_switch_signal_take_pending();
             if (!vm_uuid_equal(target_id, vm_uuid_none())) {
                 VMRegistryEntry target_entry;
                 if (capsule_vm_registry_get(target_id, &target_entry) == 0 &&
                     target_entry.vm_ptr && target_entry.vm_ptr != (void *)vm) {
-                    sk_vm_switch_signal_note_switch_performed();
+                    sk_vm_switch_signal_note_switch_performed(target_id);
                     sk_vm_context_switch(vm, (VM *)target_entry.vm_ptr);
                     /* Resumes here once something later switches back. */
                 }