docs: audit is a living document; separate design sins from contained coding slips

FORK-AUDIT.md

@@ -1,12 +1,26 @@
 # Neuron Fork — Process Audit Log
 
-**Date:** 2026-08-21
+**Date:** 2026-08-21 (initial entry)
 **Scope:** Everything unusual, odd, or dangerous observed while forking
-`anomalyco/opencode` → `neuron-technologies/neuron`, including mistakes made
-during our own surgery.
+`anomalyco/opencode` → `neuron-technologies/neuron`.
+
+## This is a living document
+
+Every future surgery on this codebase appends its findings and its errors
+here. Two hard rules:
+
+1. **Design sins and coding slips are logged in different sections.** A design
+   sin is a deliberate decision with dangerous defaults that ships to users.
+   A coding slip is an implementation error. They get different scrutiny and
+   different fixes — conflating them hides both.
+2. **Containment is always recorded.** For every slip: which gate caught it,
+   and whether it ever reached the remote. The containment column is the point
+   of the log — it proves (or disproves) that our gates work.
 
 ---
 
+
+
 ## Part 1: Dangerous-by-design findings in upstream code
 
 ### 1.1 Network-callable self-upgrade endpoint (HIGH)
@@ -90,10 +104,14 @@ with repo housekeeping files.
 
 ---
 
-## Part 3: Our own surgery incidents (honest record)
+## Part 3: Error log — all contained pre-push
 
-These are mistakes **we** made during the fork process. Logged because a fork
-audit that only blames upstream is propaganda.
+Implementation slips made during the fork surgery. Categorically distinct
+from Part 1: those were design decisions that shipped; these are coding
+errors that never reached the remote. Every one was killed locally by a gate
+(typecheck, test suite, or pre-push hook) before a commit left the machine.
+The lesson is not "everyone makes mistakes" — it is that the gates caught
+what invisible-to-upstream rot never could.
 
 | # | Incident | Cause | Caught by | Severity |
 |---|----------|-------|-----------|----------|