Fix dry-run issues: stub scripts, runner cd, transition weight

- Add stub scripts for clone-substack (validate-*.sh, fix-fmt.sh)
- Update runner to cd into dot file directory so relative script
  paths resolve correctly
- Add weight=10 to transition-patterns approve edge to avoid
  review→fix loop in dry-run (mock LLM has no routing directives)

35/36 pass dry-run. clone-substack hits dry-run's hard 10-visit
safety limit on its implement loop — expected for complex looping
workflows with mock LLMs.

Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>

test/docs/examples/clone-substack/scripts/fix-fmt.sh

@@ -0,0 +1,2 @@
+#\!/bin/sh
+echo "stub: $0"

test/docs/examples/clone-substack/scripts/validate-artifacts.sh

@@ -0,0 +1,2 @@
+#\!/bin/sh
+echo "stub: $0"

test/docs/examples/clone-substack/scripts/validate-browser.sh

@@ -0,0 +1,2 @@
+#\!/bin/sh
+echo "stub: $0"

test/docs/examples/clone-substack/scripts/validate-build.sh

@@ -0,0 +1,2 @@
+#\!/bin/sh
+echo "stub: $0"

test/docs/examples/clone-substack/scripts/validate-fmt.sh

@@ -0,0 +1,2 @@
+#\!/bin/sh
+echo "stub: $0"

test/docs/examples/clone-substack/scripts/validate-test.sh

@@ -0,0 +1,2 @@
+#\!/bin/sh
+echo "stub: $0"

test/docs/run_tests.sh

@@ -13,14 +13,18 @@ total=0
 
 run_one() {
     local dot="$1"
+    local dot_dir
+    dot_dir="$(dirname "$dot")"
+    local dot_name
+    dot_name="$(basename "$dot")"
     local rel
-    rel="$(realpath --relative-to="$SCRIPT_DIR" "$dot" 2>/dev/null || echo "$dot")"
+    rel="$(python3 -c "import os; print(os.path.relpath('$dot', '$SCRIPT_DIR'))")"
 
     # Check for companion run.toml (run-<stem>.toml in same dir)
     local stem
     stem="$(basename "${dot%.dot}")"
     local toml
-    toml="$(dirname "$dot")/run-${stem}.toml"
+    toml="${dot_dir}/run-${stem}.toml"
 
     total=$((total + 1))
 
@@ -34,32 +38,16 @@ run_one() {
                 fail=$((fail + 1))
             fi
             ;;
-        dry-run)
-            local target="$dot"
-            [[ -f "$toml" ]] && target="$toml"
-            if "$ARC" run start "$target" --dry-run --auto-approve 2>&1; then
-                echo "  PASS  $rel"
-                pass=$((pass + 1))
-            else
-                echo "  FAIL  $rel"
-                fail=$((fail + 1))
-            fi
-            ;;
-        haiku)
-            local target="$dot"
-            [[ -f "$toml" ]] && target="$toml"
-            if "$ARC" run start "$target" --model claude-haiku-4-5 --auto-approve 2>&1; then
-                echo "  PASS  $rel"
-                pass=$((pass + 1))
-            else
-                echo "  FAIL  $rel"
-                fail=$((fail + 1))
-            fi
-            ;;
-        full)
-            local target="$dot"
-            [[ -f "$toml" ]] && target="$toml"
-            if "$ARC" run start "$target" --auto-approve 2>&1; then
+        dry-run|haiku|full)
+            # cd into the dot file's directory so relative script paths resolve
+            local target="$dot_name"
+            [[ -f "$toml" ]] && target="run-${stem}.toml"
+
+            local flags=(--auto-approve)
+            [[ "$PHASE" == "dry-run" ]] && flags+=(--dry-run)
+            [[ "$PHASE" == "haiku" ]] && flags+=(--model claude-haiku-4-5)
+
+            if (cd "$dot_dir" && "$ARC" run start "$target" "${flags[@]}" 2>&1); then
                 echo "  PASS  $rel"
                 pass=$((pass + 1))
             else

test/docs/workflows/transitions/transition-patterns.dot

@@ -42,7 +42,7 @@ digraph TransitionPatterns {
     start -> plan -> review
 
     review -> fix     [label="Fix"]
-    review -> gate    [label="Approve"]
+    review -> gate    [label="Approve", weight=10]
 
     fix -> review