diff --git a/hooks/hooks.json b/hooks/hooks.json
index dcb9926..be17df6 100644
--- a/hooks/hooks.json
+++ b/hooks/hooks.json
@@ -6,7 +6,7 @@
         "hooks": [
           {
             "type": "command",
-            "command": "${CLAUDE_PLUGIN_ROOT}/hooks/loop-plan-file-validator.sh"
+            "command": "bash \"${CLAUDE_PLUGIN_ROOT}/hooks/loop-plan-file-validator.sh\""
           }
         ]
       }
@@ -17,7 +17,7 @@
         "hooks": [
           {
             "type": "command",
-            "command": "${CLAUDE_PLUGIN_ROOT}/hooks/loop-write-validator.sh"
+            "command": "bash \"${CLAUDE_PLUGIN_ROOT}/hooks/loop-write-validator.sh\""
           }
         ]
       },
@@ -26,7 +26,7 @@
         "hooks": [
           {
             "type": "command",
-            "command": "${CLAUDE_PLUGIN_ROOT}/hooks/loop-edit-validator.sh"
+            "command": "bash \"${CLAUDE_PLUGIN_ROOT}/hooks/loop-edit-validator.sh\""
           }
         ]
       },
@@ -35,7 +35,7 @@
         "hooks": [
           {
             "type": "command",
-            "command": "${CLAUDE_PLUGIN_ROOT}/hooks/loop-read-validator.sh"
+            "command": "bash \"${CLAUDE_PLUGIN_ROOT}/hooks/loop-read-validator.sh\""
           }
         ]
       },
@@ -44,7 +44,7 @@
         "hooks": [
           {
             "type": "command",
-            "command": "${CLAUDE_PLUGIN_ROOT}/hooks/loop-bash-validator.sh"
+            "command": "bash \"${CLAUDE_PLUGIN_ROOT}/hooks/loop-bash-validator.sh\""
           }
         ]
       }
@@ -55,7 +55,7 @@
         "hooks": [
           {
             "type": "command",
-            "command": "${CLAUDE_PLUGIN_ROOT}/hooks/loop-post-bash-hook.sh"
+            "command": "bash \"${CLAUDE_PLUGIN_ROOT}/hooks/loop-post-bash-hook.sh\""
           }
         ]
       }
@@ -65,7 +65,7 @@
         "hooks": [
           {
             "type": "command",
-            "command": "${CLAUDE_PLUGIN_ROOT}/hooks/loop-codex-stop-hook.sh",
+            "command": "bash \"${CLAUDE_PLUGIN_ROOT}/hooks/loop-codex-stop-hook.sh\"",
             "timeout": 7200
           }
         ]
diff --git a/hooks/lib/loop-common.sh b/hooks/lib/loop-common.sh
index 5726b23..0133767 100755
--- a/hooks/lib/loop-common.sh
+++ b/hooks/lib/loop-common.sh
@@ -792,6 +792,12 @@ to_lower() {
     echo "$1" | tr '[:upper:]' '[:lower:]'
 }
 
+# Normalize Windows path separators to the POSIX-style separators used by the
+# hook validators' string patterns.
+normalize_path_separators() {
+    echo "${1//\\//}"
+}
+
 # Check if a path (lowercase) matches a round file pattern
 # Usage: is_round_file "$lowercase_path" "summary|prompt|todos|contract"
 is_round_file_type() {
@@ -1252,7 +1258,7 @@ is_cancel_authorized() {
 # Check if a path is inside .humanize/rlcr directory
 is_in_humanize_loop_dir() {
     local path="$1"
-    echo "$path" | grep -q '\.humanize/rlcr/'
+    normalize_path_separators "$path" | grep -q '\.humanize/rlcr/'
 }
 
 # Check if a git add command would add .humanize files to version control
diff --git a/hooks/loop-edit-validator.sh b/hooks/loop-edit-validator.sh
index fb9f8e1..56dbc2a 100755
--- a/hooks/loop-edit-validator.sh
+++ b/hooks/loop-edit-validator.sh
@@ -28,6 +28,7 @@ if [[ "$TOOL_NAME" != "Edit" ]]; then
 fi
 
 FILE_PATH=$(echo "$HOOK_INPUT" | jq -r '.tool_input.file_path // ""')
+FILE_PATH=$(normalize_path_separators "$FILE_PATH")
 FILE_PATH_LOWER=$(to_lower "$FILE_PATH")
 
 # Extract session_id from hook input for session-aware loop filtering
diff --git a/hooks/loop-read-validator.sh b/hooks/loop-read-validator.sh
index b812288..aae3001 100755
--- a/hooks/loop-read-validator.sh
+++ b/hooks/loop-read-validator.sh
@@ -44,6 +44,7 @@ if ! require_tool_input_field "$HOOK_INPUT" "file_path"; then
 fi
 
 FILE_PATH=$(echo "$HOOK_INPUT" | jq -r '.tool_input.file_path // ""')
+FILE_PATH=$(normalize_path_separators "$FILE_PATH")
 FILE_PATH_LOWER=$(to_lower "$FILE_PATH")
 
 # Extract session_id from hook input for session-aware loop filtering
diff --git a/hooks/loop-write-validator.sh b/hooks/loop-write-validator.sh
index 1d8f1e3..f069104 100755
--- a/hooks/loop-write-validator.sh
+++ b/hooks/loop-write-validator.sh
@@ -45,6 +45,7 @@ if ! require_tool_input_field "$HOOK_INPUT" "file_path"; then
 fi
 
 FILE_PATH=$(echo "$HOOK_INPUT" | jq -r '.tool_input.file_path // ""')
+FILE_PATH=$(normalize_path_separators "$FILE_PATH")
 FILE_PATH_LOWER=$(to_lower "$FILE_PATH")
 
 # Extract session_id from hook input for session-aware loop filtering
diff --git a/tests/test-allowlist-validators.sh b/tests/test-allowlist-validators.sh
index fc5c2c9..aa3b51c 100755
--- a/tests/test-allowlist-validators.sh
+++ b/tests/test-allowlist-validators.sh
@@ -218,6 +218,50 @@ else
     fail "Write validator round-3-contract.md" "exit 2 with round error" "exit $EXIT_CODE, output: $RESULT"
 fi
 
+WINDOWS_LOOP_DIR="${LOOP_DIR//\//\\}"
+
+# Test 11c: Write validator blocks stale summary with Windows separators
+echo "Test 11c: Write validator blocks Windows-path round-3-summary.md"
+WINDOWS_FILE_PATH="${WINDOWS_LOOP_DIR}\\round-3-summary.md"
+HOOK_INPUT=$(jq -nc --arg file_path "$WINDOWS_FILE_PATH" '{tool_name: "Write", tool_input: {file_path: $file_path}}')
+set +e
+RESULT=$(echo "$HOOK_INPUT" | "$PROJECT_ROOT/hooks/loop-write-validator.sh" 2>&1)
+EXIT_CODE=$?
+set -e
+if [[ $EXIT_CODE -eq 2 ]] && echo "$RESULT" | grep -qi "round"; then
+    pass "Write validator blocks Windows-path round-3-summary.md"
+else
+    fail "Write validator Windows-path round-3-summary.md" "exit 2 with round error" "exit $EXIT_CODE, output: $RESULT"
+fi
+
+# Test 11d: Write validator allows current summary with Windows separators
+echo "Test 11d: Write validator allows Windows-path round-5-summary.md"
+WINDOWS_FILE_PATH="${WINDOWS_LOOP_DIR}\\round-5-summary.md"
+HOOK_INPUT=$(jq -nc --arg file_path "$WINDOWS_FILE_PATH" '{tool_name: "Write", tool_input: {file_path: $file_path}}')
+set +e
+RESULT=$(echo "$HOOK_INPUT" | "$PROJECT_ROOT/hooks/loop-write-validator.sh" 2>&1)
+EXIT_CODE=$?
+set -e
+if [[ $EXIT_CODE -eq 0 ]]; then
+    pass "Write validator allows Windows-path round-5-summary.md"
+else
+    fail "Write validator Windows-path round-5-summary.md" "exit 0" "exit $EXIT_CODE, output: $RESULT"
+fi
+
+# Test 11e: Write validator blocks plan.md backup with Windows separators
+echo "Test 11e: Write validator blocks Windows-path plan.md backup"
+WINDOWS_FILE_PATH="${WINDOWS_LOOP_DIR}\\plan.md"
+HOOK_INPUT=$(jq -nc --arg file_path "$WINDOWS_FILE_PATH" '{tool_name: "Write", tool_input: {file_path: $file_path}}')
+set +e
+RESULT=$(echo "$HOOK_INPUT" | "$PROJECT_ROOT/hooks/loop-write-validator.sh" 2>&1)
+EXIT_CODE=$?
+set -e
+if [[ $EXIT_CODE -eq 2 ]] && echo "$RESULT" | grep -qi "plan"; then
+    pass "Write validator blocks Windows-path plan.md backup"
+else
+    fail "Write validator Windows-path plan.md backup" "exit 2 with plan error" "exit $EXIT_CODE, output: $RESULT"
+fi
+
 echo ""
 echo "=== Test: Edit Validator Allowlist ==="
 echo ""
@@ -274,6 +318,48 @@ else
     fail "Edit validator round-0-contract.md" "exit 2 with round error" "exit $EXIT_CODE, output: $RESULT"
 fi
 
+# Test 13d: Edit validator blocks stale summary with Windows separators
+echo "Test 13d: Edit validator blocks Windows-path round-3-summary.md"
+WINDOWS_FILE_PATH="${WINDOWS_LOOP_DIR}\\round-3-summary.md"
+HOOK_INPUT=$(jq -nc --arg file_path "$WINDOWS_FILE_PATH" '{tool_name: "Edit", tool_input: {file_path: $file_path}}')
+set +e
+RESULT=$(echo "$HOOK_INPUT" | "$PROJECT_ROOT/hooks/loop-edit-validator.sh" 2>&1)
+EXIT_CODE=$?
+set -e
+if [[ $EXIT_CODE -eq 2 ]] && echo "$RESULT" | grep -qi "round"; then
+    pass "Edit validator blocks Windows-path round-3-summary.md"
+else
+    fail "Edit validator Windows-path round-3-summary.md" "exit 2 with round error" "exit $EXIT_CODE, output: $RESULT"
+fi
+
+# Test 13e: Edit validator allows current summary with Windows separators
+echo "Test 13e: Edit validator allows Windows-path round-5-summary.md"
+WINDOWS_FILE_PATH="${WINDOWS_LOOP_DIR}\\round-5-summary.md"
+HOOK_INPUT=$(jq -nc --arg file_path "$WINDOWS_FILE_PATH" '{tool_name: "Edit", tool_input: {file_path: $file_path}}')
+set +e
+RESULT=$(echo "$HOOK_INPUT" | "$PROJECT_ROOT/hooks/loop-edit-validator.sh" 2>&1)
+EXIT_CODE=$?
+set -e
+if [[ $EXIT_CODE -eq 0 ]]; then
+    pass "Edit validator allows Windows-path round-5-summary.md"
+else
+    fail "Edit validator Windows-path round-5-summary.md" "exit 0" "exit $EXIT_CODE, output: $RESULT"
+fi
+
+# Test 13f: Edit validator blocks plan.md backup with Windows separators
+echo "Test 13f: Edit validator blocks Windows-path plan.md backup"
+WINDOWS_FILE_PATH="${WINDOWS_LOOP_DIR}\\plan.md"
+HOOK_INPUT=$(jq -nc --arg file_path "$WINDOWS_FILE_PATH" '{tool_name: "Edit", tool_input: {file_path: $file_path}}')
+set +e
+RESULT=$(echo "$HOOK_INPUT" | "$PROJECT_ROOT/hooks/loop-edit-validator.sh" 2>&1)
+EXIT_CODE=$?
+set -e
+if [[ $EXIT_CODE -eq 2 ]] && echo "$RESULT" | grep -qi "plan"; then
+    pass "Edit validator blocks Windows-path plan.md backup"
+else
+    fail "Edit validator Windows-path plan.md backup" "exit 2 with plan error" "exit $EXIT_CODE, output: $RESULT"
+fi
+
 # Test 14: Edit validator blocks round-4-todos.md
 echo "Test 14: Edit validator blocks round-4-todos.md"
 HOOK_INPUT='{"tool_name": "Edit", "tool_input": {"file_path": "'$LOOP_DIR'/round-4-todos.md"}}'
@@ -369,6 +455,34 @@ else
     fail "Read validator round-3-contract.md" "exit 2 with round error" "exit $EXIT_CODE, output: $RESULT"
 fi
 
+# Test 18c: Read validator blocks stale summary with Windows separators
+echo "Test 18c: Read validator blocks Windows-path round-3-summary.md"
+WINDOWS_FILE_PATH="${WINDOWS_LOOP_DIR}\\round-3-summary.md"
+HOOK_INPUT=$(jq -nc --arg file_path "$WINDOWS_FILE_PATH" '{tool_name: "Read", tool_input: {file_path: $file_path}}')
+set +e
+RESULT=$(echo "$HOOK_INPUT" | "$PROJECT_ROOT/hooks/loop-read-validator.sh" 2>&1)
+EXIT_CODE=$?
+set -e
+if [[ $EXIT_CODE -eq 2 ]] && echo "$RESULT" | grep -qi "round"; then
+    pass "Read validator blocks Windows-path round-3-summary.md"
+else
+    fail "Read validator Windows-path round-3-summary.md" "exit 2 with round error" "exit $EXIT_CODE, output: $RESULT"
+fi
+
+# Test 18d: Read validator allows current contract with Windows separators
+echo "Test 18d: Read validator allows Windows-path round-5-contract.md"
+WINDOWS_FILE_PATH="${WINDOWS_LOOP_DIR}\\round-5-contract.md"
+HOOK_INPUT=$(jq -nc --arg file_path "$WINDOWS_FILE_PATH" '{tool_name: "Read", tool_input: {file_path: $file_path}}')
+set +e
+RESULT=$(echo "$HOOK_INPUT" | "$PROJECT_ROOT/hooks/loop-read-validator.sh" 2>&1)
+EXIT_CODE=$?
+set -e
+if [[ $EXIT_CODE -eq 0 ]]; then
+    pass "Read validator allows Windows-path round-5-contract.md"
+else
+    fail "Read validator Windows-path round-5-contract.md" "exit 0" "exit $EXIT_CODE, output: $RESULT"
+fi
+
 echo ""
 echo "=== Test: Bash Validator Allowlist (Path-Restricted) ==="
 echo ""