diff --git a/tools/corpus_engine.py b/tools/corpus_engine.py
index 51ff3247..e6c1c825 100755
--- a/tools/corpus_engine.py
+++ b/tools/corpus_engine.py
@@ -96,6 +96,13 @@ RETIRED_EXPOSURE_FORM_RE = re.compile(
     r")",
     re.I | re.S,
 )
+RETIRED_EFFECTS_LAB_NAV_RE = re.compile(
+    r"\[(?P<label>[^\]\n]*"
+    r"\b(?:particulate(?:\s+residue)?|motes?|dust(?:-fine)?|stain)\b"
+    r"[^\]\n]*)\]"
+    r"\((?:[^)\n]*/)?effects-lab[.]md(?:#[^)\n]*)?\)",
+    re.I,
+)
 RETIRED_EXPOSURE_FORM_HISTORY_RE = re.compile(
     r"\b(?:former|old|previous(?:ly)?|retir(?:ed|ement)|"
     r"supersed(?:e|ed|es|ing)|histor(?:y|ical)|rejected|replaced|"
@@ -477,9 +484,20 @@ class Engine:
         machine-work, ROADMAP, and architecture mirrors later retained
         motes/dust/stain assertions. The architecture form may omit the word
         Exposure while still calling the Thought-only effects harness a dust
-        lab. Sentence-local history words preserve explanations of that
-        transition while rejecting a return to the retired live form.
+        lab. Navigation labels are current descriptions by definition, so a
+        link to the effects-lab page cannot retain that retired vocabulary.
+        Sentence-local history words preserve explanations of the transition
+        while rejecting a return to the retired live form.
         """
+        for claim in RETIRED_EFFECTS_LAB_NAV_RE.finditer(text):
+            line = text.count("\n", 0, claim.start()) + 1
+            label = " ".join(claim.group("label").split())
+            self.bad(
+                f"{rel}:{line} labels the Thought-only effects lab with "
+                f"retired particulate vocabulary '{label}'; navigation must "
+                "describe its current Thought route/pool scope"
+            )
+
         for claim in RETIRED_EXPOSURE_FORM_RE.finditer(text):
             boundaries = [
                 text.rfind(mark, 0, claim.start()) for mark in (".", "!", "?")
diff --git a/tools/test_corpus_engine.sh b/tools/test_corpus_engine.sh
index 6c5f53f1..d0662982 100755
--- a/tools/test_corpus_engine.sh
+++ b/tools/test_corpus_engine.sh
@@ -702,6 +702,29 @@ The `misaligned-effects` binary is the liquid/dust lab.
 EOF
 assert_fails particulate-effects-lab --root "$root" --corpus
 
+mkdir -p "$root/wiki/art"
+cat > "$root/wiki/art/effects-lab.md" <<'EOF'
+# Effects lab
+
+```
+Type: knowledge
+```
+
+Thought routes and pools use the shared material renderer.
+EOF
+cat >> "$root/wiki/SUMMARY.md" <<'EOF'
+- [Effects lab: dust and liquid](art/effects-lab.md)
+EOF
+assert_fails particulate-effects-lab-nav --root "$root" --corpus
+out=$(python3 "$engine" --root "$root" --corpus 2>&1 || true)
+echo "$out" | grep -q 'labels the Thought-only effects lab with retired particulate vocabulary' || {
+  echo "FAIL: particulate effects-lab navigation diagnostic missing"
+  echo "$out"
+  fail=1
+}
+sed -i 's/Effects lab: dust and liquid/Effects lab: Thought routes and pools/' \
+  "$root/wiki/SUMMARY.md"
+
 cat > "$root/wiki/process/exposure-knowledge.md" <<'EOF'
 # Exposure knowledge
 
diff --git a/wiki/SUMMARY.md b/wiki/SUMMARY.md
index cb226da3..da34e220 100644
--- a/wiki/SUMMARY.md
+++ b/wiki/SUMMARY.md
@@ -102,7 +102,7 @@
   - [Visual identity: clinical gore](art/visual-identity.md)
   - [Player-visible placeholder registry](art/placeholders.md)
   - [Procedural asset tester](art/asset-tester.md)
-  - [Effects lab: dust and liquid](art/effects-lab.md)
+  - [Effects lab: Thought routes and pools](art/effects-lab.md)
 
 # Engineering
 
diff --git a/wiki/log/2026-07-26-effects-lab-navigation-gate.md b/wiki/log/2026-07-26-effects-lab-navigation-gate.md
new file mode 100644
index 00000000..ce9520cd
--- /dev/null
+++ b/wiki/log/2026-07-26-effects-lab-navigation-gate.md
@@ -0,0 +1,38 @@
+# 2026-07-26 — Keep the Thought effects lab named by its current scope
+
+```
+Type: log
+```
+
+## Tick finding
+
+A fresh audit of the effects-lab slice found that its owning spec, runtime
+window title, architecture mirrors, and shared renderer all describe the
+implemented Thought-only route/pool harness. The corpus navigation still
+called the page “Effects lab: dust and liquid,” however, preserving the
+retired particulate Exposure prototype as the reader's first description.
+
+This was the same mechanical drift class already promoted into the corpus
+gate for prose that names `misaligned-effects`. The gate did not cover a
+Markdown navigation label that linked directly to `effects-lab.md` without
+naming the binary.
+
+## Repair
+
+- `wiki/SUMMARY.md` now calls the harness “Effects lab: Thought routes and
+  pools.”
+- The living-spec criterion states that navigation labels are current
+  descriptions and may not preserve the retired dust/particulate name.
+- `tools/corpus_engine.py` rejects a particulate/dust label on a link to
+  `effects-lab.md`, with a fixture for the exact escaped form.
+
+No renderer, simulation, save, or gameplay behavior changed.
+
+## Defense
+
+`wiki/art/effects-lab.md` confines `misaligned-effects` to Thought routes and
+endpoint pools and places rigid Exposure custody records outside that fluid
+renderer. `wiki/process/meta.md` criterion 12 requires recurring superseded
+current-state claims to become executable corpus defenses. Updating the
+navigation and extending that existing defense prevents the retired visual
+ontology from returning through the corpus doorway.
diff --git a/wiki/log/DEVLOG.md b/wiki/log/DEVLOG.md
index bfca4451..7ce6cf9e 100644
--- a/wiki/log/DEVLOG.md
+++ b/wiki/log/DEVLOG.md
@@ -16,6 +16,11 @@ add or amend a session log, then re-run the generator.
 - Intent: (see session log)
 - Log: [wiki/log/2026-07-26-standing-plot-policies.md](2026-07-26-standing-plot-policies.md)
 
+## 2026-07-26 - Keep the Thought effects lab named by its current scope
+
+- Intent: (see session log)
+- Log: [wiki/log/2026-07-26-effects-lab-navigation-gate.md](2026-07-26-effects-lab-navigation-gate.md)
+
 ## 2026-07-25 - Liturgical UI: five bodies, one control language
 
 - Intent: The first constitution pass improved the surfaces but still described and built parts of the interface as named pieces of architecture. This correction makes the hierarchy operational instead: five bodies, one stable order, one meaning for each color, and one restrained select...
diff --git a/wiki/process/meta.md b/wiki/process/meta.md
index dd4a0296..3c95a240 100644
--- a/wiki/process/meta.md
+++ b/wiki/process/meta.md
@@ -296,5 +296,6 @@ structure.
     form as live: Exposure uses rigid crimson custody records. Calling
     `misaligned-effects` a dust or particulate lab is the same retired form
     even when the sentence omits the word Exposure; that harness now isolates
-    Thought routes and pools. Explicitly marked historical context and dated
-    logs remain legal.
+    Thought routes and pools. Navigation labels are current descriptions and
+    cannot retain the retired dust/particulate name. Explicitly marked
+    historical context and dated logs remain legal.
diff --git a/wiki/process/tick-ledger.md b/wiki/process/tick-ledger.md
index d2c3ade6..4e9e8db6 100644
--- a/wiki/process/tick-ledger.md
+++ b/wiki/process/tick-ledger.md
@@ -20,6 +20,7 @@ Verdicts: **clean** (slice and code agree), **finding** (acted this tick),
 
 | Slice | Last audited | Verdict | Trace |
 |---|---|---|---|
+| `wiki/art/effects-lab.md` + corpus navigation | 2026-07-26 | finding | the owning spec, shared renderer, game adapter, and runtime title all describe the current Thought-only route/pool harness, but `SUMMARY.md` still advertised the retired “dust and liquid” scope. Navigation now names Thought routes and pools, and the recurring retired-form gate rejects particulate/dust labels on links to `effects-lab.md` as well as prose that names the binary — [log](../log/2026-07-26-effects-lab-navigation-gate.md) |
 | `wiki/interface/thought-fluid.md` + shared effect lifecycle | 2026-07-24 | finding | live Bevy logs exposed a deferred-command race: when a changed Thought route disappeared, the game queued its root despawn while the shared renderer queued child replacement from the same old root. Command application could remove the root and old children first, then issue stale child despawns and `ChildOf` insertions against the dead id. Route-root reconciliation now flushes before the renderer's named population-rebuild set; behavioral and composition-root regressions pin zero orphan visuals and the exact ordering seam — [log](../log/2026-07-24-bevy-effect-root-lifecycle.md) |
 | `wiki/art/visual-identity.md` + `wiki/interface/flat-materials.md` | 2026-07-22 | finding | the role semantics still matched production—amber selection, crimson consequence, cold signal, and the pooled-material audits all held—but the claimed single-source palette existed twice: one Bevy-local table and one asset-library table whose comment still called sharing future work after the shared rack had entered production. Bevy, rack, institution, Thought effects, and the asset tester now import `misaligned_assets::palette`; authored chassis/mercury values are named there, and source-shape defenses reject another frontend table or inline shared procedural-material colors — [log](../log/2026-07-22-shared-clinical-palette.md) |
 | `wiki/interface/superhuman-operability.md` + Bevy opening | 2026-07-22 | finding | current-build naive + informed GUI audit after the 2026-07-21 fixes: title trust, pointer naming, annotation placement, and tab labels improved, but the first sense still releases the mature map, clock, threat, resource grammar, intel custody, and Operations policies at once. The report preserves the classified evidence and prioritizes one paused, one-cause / one-object / one-verb post-perception teaching lock before ordinary play opens - [report](../playtests/2026-07-22-playtest-gui-human-legibility.md), [log](../log/2026-07-22-gui-human-legibility-playtest.md) |