test: improve hermetic git repository setup in helpers

tests/helpers.bash

@@ -57,8 +57,8 @@ private: false
 
 
 ## Private Synthesis (`wiki/private/`)
-*Restricted access. Requires PRIVATE_CONTEXT: enabled and unlocked repo.*
+_Restricted access. Requires `PRIVATE_CONTEXT: enabled` and unlocked repo._
-*List slug names ONLY. Do not append summaries — prevents metadata leakage.*
+_List slug names ONLY. Do not append summaries — prevents metadata leakage._
 EOF
 
   cat > "${g}/wiki/log.md" <<'EOF'
@@ -88,16 +88,17 @@ EOF
     git init -q
     # Hermetic: ignore the user's global git config (signing, global hooks);
     # otherwise commit.gpgsign or a global core.hooksPath makes git commit fail here.
-    git config commit.gpgsign false
+    git config --local user.name "Framework Test"
-    git config core.hooksPath "${base}/nohooks"
+    git config --local user.email "test@genome.local"
-    git config user.email t@t
+    git config --local commit.gpgsign false
-    git config user.name tester
+    git config --local core.hooksPath "${base}/nohooks"
-    git add .
+
-    git commit -qm init
     git branch -M main
     git remote add origin "${base}/origin.git"
+    git add .
+    git commit -q -m "chore: initial scaffold"
     git push -q -u origin main
-  ) >/dev/null
+  )
 
   echo "${g}"
 }