Rename init-0.4th..init-9.4th to workload-0.4th..workload-9.4th; fix stale WL-HI/WL-LO doc

These are alternate boot personality capsules, not files doe.4th
dispatches from -- confirmed by reading doe.4th itself (it generates
its own synthetic workload internally, DOE-WORK) and mkcapsule.c
(only the exact filename "init.4th" is special-cased as the active
MAMA_INIT capsule). "workload-N.4th" names them for what they are
without colliding with that reserved name.

Renamed the 10 files (git mv, preserving history) and their own
self-referential header comments (also fixed a pre-existing typo,
"init-4.th" -> "workload-4.4th"), updated capsules/README.md,
capsules/MANIFEST.md (21 references), .claude/CLAUDE.md, and a
tools/mkcapsule.c comment.

Also fixed experiments/bare_metal/README.md's "Adding a Custom
Workload Capsule" section, discovered stale while doing this rename:
it documented a WL-HI/WL-LO dispatch table and a wl_id CSV column
that don't exist anywhere in the current capsules/ tree or doe.4th's
own CSV header -- corrected to describe what's actually there (no
pluggable workload dispatch; a custom workload is run by substituting
it in as the boot's own init.4th).

Verified: mkcapsule --lint clean (35 files, 0 violations), all 3
architectures build with zero new warnings, amd64 boots to zuse)ok>
with an unchanged dict_hash/capsule_hash from every prior boot this
session (0xc8f4b09e36f4fc4a / 0x1ef4939ed32ec1e6) and zero faults.

Co-Authored-By: Claude Sonnet 5 <noreply@anthropic.com>
Claude-Session: https://claude.ai/code/session_01EXieurDfDSsDFdnSyusuWo

.claude/CLAUDE.md

@@ -405,7 +405,7 @@ execute IDENTITY (capsule code) → execute PERSONALITY (block 1 from ramdrive)
 
 **Capsule files:** `capsules/` has 23 `.4th` files (the `mkcapsule` build tool reports "26
 capsule(s)" registered — some files apparently register more than one capsule entry; not
-further investigated). Includes `init.4th`, `init-0.4th`–`init-9.4th`,
+further investigated). Includes `init.4th`, `workload-0.4th`–`workload-9.4th`,
 `init-l8-{stable,volatile,diverse,temporal,transition,omni}.4th`, plus `doe.4th`,
 `doe-campaign.4th`, `lib.4th`, `process.4th`, `ACL.4th`, `zuse.4th` — more than the 17 older
 docs claimed.