Strip capsules/common/msg.4th -- FABRIC-3.6.md task 0.2

Dead per task 0.1's reachability check (156d1642): zero EXEC sites in
any boot-loaded capsule, and its only two words (HERMES-ACK/
HERMES-NACK) have zero callers anywhere -- messaging.4th's own block
5033 comment already says outright that this file's ACK/NACK
indirection is retired.

mkcapsule --lint capsules/ clean, 38 files / 0 violations (was 39).
Three-arch boot clean: amd64/aarch64/riscv64 all reach [zuse@Hera] ok>,
zero UNKNOWN WORD, dict_hash unchanged from the task 0.0 baseline on
all three -- expected, since the file was never loaded into any VM's
dictionary in the first place.

capsule-reserved.txt and MANIFEST.md's stale block-4055 entry are left
untouched here, per the punchlist's own ordering -- 0.6 returns the
freed block range and 0.5 corrects the manifest once 0.3's strip is
also done.

Authorized by Captain Bob ("Go ahead.").

Co-Authored-By: Claude Sonnet 5 <noreply@anthropic.com>

FABRIC-3.6.md

@@ -198,7 +198,17 @@ it has simply not been attempted.)*
       `process.4th`'s calls pass bare numeric literals (`1`/`2`/`3`/`4`), never the constant
       names. Task 0.4 only names `SPAWN-EVENT`; not expanding its scope here, but flagging that
       the other three meet the identical bar for whoever picks up Category A stripping next.
-- [ ] **0.2** — Strip `capsules/common/msg.4th`. *Check:* 3-arch boot; lint clean.
+- [x] **0.2** — Strip `capsules/common/msg.4th`. *Check:* 3-arch boot; lint clean.
+      2026-09-19 · `logs/20260919-131945/amd64/`, `logs/20260919-132054/aarch64/`,
+      `logs/20260919-132226/riscv64/` — all three reach `[zuse@Hera] ok>`, zero `UNKNOWN WORD`.
+      `mkcapsule --lint capsules/` clean, 38 files, 0 violations (was 39 before the strip).
+      `dict_hash` **unchanged** from the task 0.0 baseline on all three (Hera
+      `0x6824fe5993239838`, Hermes `0x062252c4da6858da`, Artemis `0xed80117724c26f36`) — expected,
+      not a defect: task 0.1 confirmed `msg.4th` was never `EXEC`'d into any VM's dictionary, so
+      removing the dead file from the baked capsule directory doesn't move anything actually
+      loaded. `capsule-reserved.txt` not yet touched — block 4055's range is returned in task 0.6
+      per the punchlist's own ordering. `MANIFEST.md`'s stale block-4055 entry not yet corrected
+      — bundled into task 0.5 alongside block 2049's correction, per the punchlist.
 - [ ] **0.3** — Strip `capsules/process.4th` (takes `EVENT-EMIT`/`-WAIT`/`-DRAIN` with it,
       §XXXIII.3). *Check:* 3-arch boot; lint clean.
 - [ ] **0.4** — Strip `SPAWN-EVENT`. *Check:* 3-arch boot; lint clean.

capsules/BLOCK_MAP.md

@@ -1,5 +1,5 @@
 # Capsule Block Manifest — Auto-generated
-<!-- Generated by mkcapsule --manifest  2026-09-19T17:03:17Z -->
+<!-- Generated by mkcapsule --manifest  2026-09-19T17:22:23Z -->
 <!-- DO NOT EDIT — re-run mkcapsule --manifest to refresh.  -->
 <!-- Hand-written justifications and immutability notes live  -->
 <!-- in MANIFEST.md alongside this auto-generated index.      -->
@@ -13,7 +13,6 @@
 | `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 | `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 |
 | `fabric.4th` | 4900, 4901, 4902, 4903, 4904, 4905, 4906, 4907, 4908, 4909, 4910, 4911, 4912, 4913, 4914, 4915, 4916, 4917, 4918, 4919, 4920, 4921, 4922, 4923, 4924, 5000, 5001, 5002 | `0x9d9489cbeca4099b` | yes |
@@ -145,7 +144,6 @@
 | 4047 | `acl-std79.4th` | `0x773bf9209df191d1` | ok |
 | 4048 | `acl-std79.4th` | `0x773bf9209df191d1` | ok |
 | 4050 | `lib.4th` | `0x4b216635c359ef73` | ok |
-| 4055 | `common:msg.4th` | `0x850a0382344ea6c4` | ok |
 | 4060 | `doe-campaign.4th` | `0x3d4549142d91ec20` | ok |
 | 4061 | `doe-campaign.4th` | `0x3d4549142d91ec20` | ok |
 | 4062 | `doe-campaign.4th` | `0x3d4549142d91ec20` | ok |
@@ -415,4 +413,4 @@
 None.
 
 ---
-*39 capsule(s) scanned.  Re-run `mkcapsule --manifest <dir>` to refresh.*
+*38 capsule(s) scanned.  Re-run `mkcapsule --manifest <dir>` to refresh.*

capsules/common/msg.4th

@@ -1,10 +0,0 @@
-Block 4055
-( common:msg.4th — Hermes participant interface )
-( Load into every messaging VM at birth: )
-( S" common:msg.4th" EXEC )
-: HERMES-ACK ( -- )
-  LOG-DEBUG" msg: ACK sent"
-  S" MSG-ACK-LAST" S" Hermes" VM-EXEC ;
-: HERMES-NACK ( -- )
-  LOG-DEBUG" msg: NACK sent"
-  S" MSG-NACK-LAST" S" Hermes" VM-EXEC ;