docs(vault): the work log keeps incidents and laws; the numbers move to the page that owns them

log.md drops 466 lines of per-swap ledger prose (1,169 lines out, 703 back) and
keeps the causal stories: why the host went down, why a knob resets at boot, why
a stale drop-in served a different model for 24 minutes, why the RAM was the
fault. Date sections are unchanged (65 before, 65 after) -- this is compression
inside sections, not deletion of days.

Every number the compression would have orphaned was ported to its owner first,
and a census of the deleted lines against the whole vault is what found them:

- frank-zealot: the two boots that priced non-KV (20,190/KV 12,800 => 7,390
  without the projector; 22,972/KV 14,113 => 8,859 with it, so the vision tower
  costs ~1.4 GiB for a 918 MB file), the 1,153 MiB-free 3-slot boot that made
  the seam price non-KV at 9 GiB, and the f16 wall's own figures (fit 33,198 vs
  23,558 free on a 25,088.00 MiB KV request).
- frank-archon: the pool-cut-is-headroom-not-arena law (2.75 GiB/rank bought
  zero slots; d(reserve) = d(arena) = +248 slots; 14.87 GiB / 6,496 slots
  against a 398,658-token pool), the MNBT compile-RANGE vs SEQS+1 law, and the
  2 x 196,919 prefix-cache proof (393,837 tokens resident above the pool's
  386,904; 94.1/102.3/117.6 t/s, acceptance 0.7284/0.7525).
- frank-dragoon: the KL arm of the 2026-10-17 A/B (mean 0.155 / median 0.057,
  top-1 agreement 85.1 %) joins the PPL and NIAH figures already on the era row.
- Payload and Disk Reclaim: the 121 GB layer census lesson -- a huge image layer
  can be the engine image, not a payload.

Also fixes a wikilink the rewrite had hard-wrapped across two lines, which the
link checker reads as a target that does not exist.

New seam: 'one page per live LLM endpoint'. The live set is derived from
scripts/ (an endpoint has both an env and a unit), and any <endpoint>-*.md page
in the vault fails it -- the enforcement of the one-page-per-endpoint law, so a
re-created era page cannot pass tests.

tests/docs_completeness.bats

@@ -3,6 +3,9 @@
 # Every service defined in a compose.yaml must have a matching documentation
 # page in serverAppConfigs-docs/ and must be reachable from the index. This is the "docs first"
 # contract of this repo: no service ships without documentation.
+# The vault's second law, added 2026-10-18: ONE page per live LLM endpoint.
+# A payload swap is an Eras row on that endpoint's page, never a page of its
+# own -- a second file holding the same shape is the next thing to go stale.
 
 load helpers
 
@@ -43,3 +46,31 @@ load helpers
     run "$REPO_ROOT/scripts/check-vault-links.py" "$REPO_ROOT/serverAppConfigs-docs"
     [ "$status" -eq 0 ] || { echo "$output"; false; }
 }
+
+@test "one page per live LLM endpoint" {
+    # The live set is derived, not hardcoded: an endpoint is live if scripts/
+    # holds both its env and its unit (frank-tts has an env but no unit, so it
+    # is not an inference endpoint; homepage-status is the reverse).
+    local vault="$REPO_ROOT/serverAppConfigs-docs" derived=0 name extra
+    for envf in "$REPO_ROOT"/scripts/frank-*.env; do
+        name=$(basename "$envf" .env)
+        [ -f "$REPO_ROOT/scripts/$name.service" ] || continue
+        derived=$((derived + 1))
+        [ -f "$vault/LLM/$name.md" ] || {
+            echo "live endpoint '$name' has no canonical page: serverAppConfigs-docs/LLM/$name.md"
+            return 1
+        }
+        extra=$(find "$vault" -name "${name}-*.md" -not -path '*/.AGENTTRASH/*' | sort)
+        if [ -n "$extra" ]; then
+            echo "endpoint '$name' owns exactly one page; these files re-create a second owner of its shape:"
+            echo "$extra"
+            echo "Fold them into LLM/$name.md (an Eras row plus, if needed, a Law) and trash the page."
+            return 1
+        fi
+    done
+    # Guard against the derivation going vacuous -- an empty loop passes silently.
+    [ "$derived" -ge 3 ] || {
+        echo "expected at least 3 live endpoints derived from scripts/*.env + scripts/*.service, got $derived"
+        return 1
+    }
+}