diff --git a/docs/LANES/LANE_F_NOTES.md b/docs/LANES/LANE_F_NOTES.md
index 1d0093b..e08fe52 100644
--- a/docs/LANES/LANE_F_NOTES.md
+++ b/docs/LANES/LANE_F_NOTES.md
@@ -1205,3 +1205,27 @@ a gate that green-lights id-space collisions in the layer that moves money.
 **The fix (C rules, E lands it, one line):** gate `SLOT_ID_PREFIX` on `sourcing == 'real'`; for `mint`,
 assert `mint_`-prefixed + non-positional + unique — which F has already measured true. Then F re-gates
 and tags. **Everything else for the beta is done and green.**
+
+### The fence went in and the hold ended — wave 4
+C ruled and both lanes titled their commit the same thing: **"my rule was the stale thing."** E's one line:
+
+```python
+SLOT_ID_PREFIX = {"real": "sku_", "mint": "mint_"}      # sourcing-scoped, not one space
+```
+
+Fable's ruling — **prefixes are namespace fences** — and E's comment makes G's judgment the law:
+*"`sku_` names a POS copy on a shelf, `mint_` names a dealgod listing standing in for one… a prefix that
+lies doesn't fail a gate, it **SELLS THE WRONG RECORD** out of a real shop to satisfy a minted stand-in.
+Never treat them as one space (**same standing note as plan-ids vs godverse-ids**)."*
+
+That closing clause is F's R24 collision — plan id 31 vs godverse id 31, which quietly walked the harness
+into a cafe — promoted from a finding to a standing law, and re-derived independently by G in the layer
+that moves money. The bug F found by entering the wrong shop is the bug G refused to ship by selling the
+wrong record. **The rule bent; the id spaces didn't.** That is the correct direction: a rule is a
+description of an intent, and when a legitimate case fails it, the description is what's wrong — provided
+somebody has measured that the intent still holds. F measured it before the ruling (non-positional,
+seeded, stable, 0 reuse across 15 crates), which is what made the ruling a decision rather than a guess.
+
+**`atlas-QA OK — 15 per-shop atlas(es) valid, 15 licence line(s) shown, 0 warning(s)`** — and that second
+number is R24's finding #4 at full scale: fifteen `FLAG BEFORE ANY PUBLIC/COMMERCIAL RELEASE` lines now
+reach a human, where one silently printed nothing.