diff --git a/src/aipass/ai_mail/apps/handlers/dispatch/daemon.py b/src/aipass/ai_mail/apps/handlers/dispatch/daemon.py
index 2f832c1b..8db59ec5 100644
--- a/src/aipass/ai_mail/apps/handlers/dispatch/daemon.py
+++ b/src/aipass/ai_mail/apps/handlers/dispatch/daemon.py
@@ -201,28 +201,45 @@ def is_kill_switch_active(config: Dict[str, Any]) -> bool:
 
 
 def _write_pid_file() -> bool:
-    """Write current PID to daemon.pid. Returns False if another daemon is running."""
-    if DAEMON_PID_FILE.exists():
-        try:
-            old_pid = int(DAEMON_PID_FILE.read_text().strip())
-            try:
-                os.kill(old_pid, 0)
-                # Process exists — another daemon is running
-                logger.info(f"Another daemon already running (PID {old_pid}). Exiting.")
-                return False
-            except ProcessLookupError:
-                # Stale PID file — process is dead, we can take over
-                logger.info(f"Removing stale PID file (PID {old_pid} is dead)")
-            except PermissionError:
-                # Process exists but we can't signal it
-                logger.info(f"Another daemon already running (PID {old_pid}, permission denied). Exiting.")
-                return False
-        except (ValueError, OSError):
-            logger.info("Corrupt PID file — removing")
-
+    """Write current PID to daemon.pid atomically. Returns False if another daemon is running."""
     DAEMON_PID_FILE.parent.mkdir(parents=True, exist_ok=True)
-    DAEMON_PID_FILE.write_text(str(os.getpid()))
-    return True
+    try:
+        fd = os.open(str(DAEMON_PID_FILE), os.O_CREAT | os.O_EXCL | os.O_WRONLY, 0o644)
+        try:
+            os.write(fd, str(os.getpid()).encode("utf-8"))
+        finally:
+            os.close(fd)
+        return True
+    except FileExistsError:
+        logger.info("[daemon] PID file already exists, checking owner")
+
+    # PID file exists — check if the owning process is alive
+    try:
+        old_pid = int(DAEMON_PID_FILE.read_text().strip())
+        try:
+            os.kill(old_pid, 0)
+            logger.info(f"Another daemon already running (PID {old_pid}). Exiting.")
+            return False
+        except ProcessLookupError:
+            logger.info(f"Removing stale PID file (PID {old_pid} is dead)")
+        except PermissionError:
+            logger.info(f"Another daemon already running (PID {old_pid}, permission denied). Exiting.")
+            return False
+    except (ValueError, OSError):
+        logger.info("Corrupt PID file — removing")
+
+    # Stale or corrupt — remove and retry atomically
+    DAEMON_PID_FILE.unlink(missing_ok=True)
+    try:
+        fd = os.open(str(DAEMON_PID_FILE), os.O_CREAT | os.O_EXCL | os.O_WRONLY, 0o644)
+        try:
+            os.write(fd, str(os.getpid()).encode("utf-8"))
+        finally:
+            os.close(fd)
+        return True
+    except FileExistsError:
+        logger.info("Another daemon raced us for the PID file. Exiting.")
+        return False
 
 
 def _remove_pid_file() -> None:
@@ -245,6 +262,17 @@ def get_registered_branches() -> list:
     return data.get("branches", [])
 
 
+def _is_registered_sender(sender: str) -> bool:
+    """Check if sender email exists in the branch registry (DPLAN-0159 S2)."""
+    registry = _read_json(BRANCH_REGISTRY)
+    if registry is None:
+        return True  # fail open if registry unreadable
+    for branch in registry.get("branches", []):
+        if branch.get("email") == sender:
+            return True
+    return False
+
+
 def check_inbox_for_dispatch(branch_path: Path) -> Optional[Dict[str, Any]]:
     """
     Check a branch's inbox for unprocessed --dispatch emails.
@@ -311,6 +339,10 @@ def spawn_agent(
     subject = message.get("subject", "")
     max_turns = config.get("max_turns_per_wake", 100)
 
+    if message.get("auto_execute") and not _is_registered_sender(sender):
+        logger.warning("[daemon] Dispatch from unregistered sender %s — rejecting", sender)
+        return False
+
     lock_file_path = str(branch_path / ".ai_mail.local" / ".dispatch.lock")
 
     # Prompt — only interpolate system-generated metadata (id, sender email).
diff --git a/src/aipass/ai_mail/apps/handlers/email/reply.py b/src/aipass/ai_mail/apps/handlers/email/reply.py
index 2d27aa85..44d35eef 100644
--- a/src/aipass/ai_mail/apps/handlers/email/reply.py
+++ b/src/aipass/ai_mail/apps/handlers/email/reply.py
@@ -164,6 +164,30 @@ def send_reply(from_branch_path: Path, original_email: Dict, reply_message: str)
     return True, f"Reply sent to {reply_destination}, original closed", reply_id
 
 
+def _validate_reply_path(reply_path: str) -> Tuple[bool, str]:
+    """Validate that reply_path points to a legitimate inbox.json.
+
+    Checks: (a) path resolves, (b) ends with .ai_mail.local/inbox.json,
+    (c) an AIPASS_REGISTRY.json exists in an ancestor directory.
+    """
+    try:
+        path = Path(reply_path).resolve()
+    except (OSError, ValueError) as e:
+        logger.warning("[reply] _validate_reply_path resolution failed: %s", e)
+        return False, f"Path resolution failed: {e}"
+
+    if path.name != "inbox.json" or path.parent.name != ".ai_mail.local":
+        return False, f"Path does not end with .ai_mail.local/inbox.json: {path}"
+
+    for parent in path.parents:
+        if (parent / "AIPASS_REGISTRY.json").exists():
+            return True, ""
+        if parent == parent.parent:
+            break
+
+    return False, f"No AIPASS_REGISTRY.json found in ancestors of {path}"
+
+
 def _deliver_via_reply_path(
     reply_path: str,
     reply_email_data: Dict,
@@ -185,7 +209,12 @@ def _deliver_via_reply_path(
     Returns:
         Tuple of (success, message, reply_id or None)
     """
-    inbox_file = Path(reply_path)
+    valid, reason = _validate_reply_path(reply_path)
+    if not valid:
+        logger.warning("[reply] reply_path rejected: %s", reason)
+        return False, f"Invalid reply_path: {reason}", None
+
+    inbox_file = Path(reply_path).resolve()
     success, error_msg, reply_id = deliver_to_inbox_file(inbox_file, reply_email_data)
     if not success:
         logger.warning("[reply] _deliver_via_reply_path failed for %s: %s", reply_path, error_msg)
diff --git a/src/aipass/ai_mail/tests/test_daemon.py b/src/aipass/ai_mail/tests/test_daemon.py
index a97d3bc5..8478667b 100644
--- a/src/aipass/ai_mail/tests/test_daemon.py
+++ b/src/aipass/ai_mail/tests/test_daemon.py
@@ -773,6 +773,7 @@ from aipass.ai_mail.apps.handlers.dispatch.daemon import (
     _handle_signal,
     _check_lock,
     _acquire_lock,
+    _is_registered_sender,
     poll_cycle,
     _write_pid_file,
     _remove_pid_file,
@@ -1773,3 +1774,170 @@ def test_poll_cycle_spawn_failure_not_counted(tmp_path, monkeypatch):
         result = poll_cycle(config, state)
 
     assert result == 0
+
+
+# ---- _is_registered_sender tests (DPLAN-0159 S2) ----------------
+
+
+def test_is_registered_sender_found(tmp_path, monkeypatch):
+    """Registered sender returns True."""
+    registry = {"branches": [{"email": "@flow"}, {"email": "@backup"}]}
+    reg_file = tmp_path / "AIPASS_REGISTRY.json"
+    reg_file.write_text(json.dumps(registry), encoding="utf-8")
+    monkeypatch.setattr(daemon_mod, "BRANCH_REGISTRY", reg_file)
+
+    assert _is_registered_sender("@flow") is True
+
+
+def test_is_registered_sender_not_found(tmp_path, monkeypatch):
+    """Unregistered sender returns False."""
+    registry = {"branches": [{"email": "@flow"}]}
+    reg_file = tmp_path / "AIPASS_REGISTRY.json"
+    reg_file.write_text(json.dumps(registry), encoding="utf-8")
+    monkeypatch.setattr(daemon_mod, "BRANCH_REGISTRY", reg_file)
+
+    assert _is_registered_sender("@evil") is False
+
+
+def test_is_registered_sender_missing_registry(tmp_path, monkeypatch):
+    """Missing registry fails open (returns True)."""
+    monkeypatch.setattr(daemon_mod, "BRANCH_REGISTRY", tmp_path / "missing.json")
+
+    assert _is_registered_sender("@anyone") is True
+
+
+def test_is_registered_sender_empty_branches(tmp_path, monkeypatch):
+    """Empty branches list returns False for any sender."""
+    registry = {"branches": []}
+    reg_file = tmp_path / "AIPASS_REGISTRY.json"
+    reg_file.write_text(json.dumps(registry), encoding="utf-8")
+    monkeypatch.setattr(daemon_mod, "BRANCH_REGISTRY", reg_file)
+
+    assert _is_registered_sender("@flow") is False
+
+
+# ---- spawn_agent sender auth tests (DPLAN-0159 S2) ----------------
+
+
+def test_spawn_agent_rejects_unregistered_auto_execute(tmp_path, monkeypatch):
+    """Auto-execute dispatch from unregistered sender is rejected."""
+    branch_path = tmp_path / "branch"
+    branch_path.mkdir()
+
+    registry = {"branches": [{"email": "@flow"}]}
+    reg_file = tmp_path / "AIPASS_REGISTRY.json"
+    reg_file.write_text(json.dumps(registry), encoding="utf-8")
+    monkeypatch.setattr(daemon_mod, "BRANCH_REGISTRY", reg_file)
+
+    message = {"from": "@forged", "id": "msg1", "subject": "Fake", "auto_execute": True}
+    config = {"max_turns_per_wake": 50}
+    state = {"daily_counts": {}, "session_cycles": {}}
+
+    result = spawn_agent(branch_path, "@testbranch", message, config, state)
+
+    assert result is False
+
+
+def test_spawn_agent_allows_registered_auto_execute(tmp_path, monkeypatch):
+    """Auto-execute dispatch from registered sender proceeds to spawn."""
+    branch_path = tmp_path / "branch"
+    branch_path.mkdir()
+    (branch_path / "logs").mkdir()
+
+    registry = {"branches": [{"email": "@devpulse"}, {"email": "@flow"}]}
+    reg_file = tmp_path / "AIPASS_REGISTRY.json"
+    reg_file.write_text(json.dumps(registry), encoding="utf-8")
+    monkeypatch.setattr(daemon_mod, "BRANCH_REGISTRY", reg_file)
+
+    message = {"from": "@devpulse", "id": "msg1", "subject": "Task", "auto_execute": True}
+    config = {"max_turns_per_wake": 50}
+    state = {"daily_counts": {}, "session_cycles": {}}
+
+    mock_process = MagicMock()
+    mock_process.pid = 54321
+
+    with (
+        patch(
+            "aipass.ai_mail.apps.handlers.dispatch.daemon.subprocess.Popen",
+            return_value=mock_process,
+        ),
+        patch(
+            "aipass.ai_mail.apps.handlers.dispatch.daemon._acquire_lock",
+            return_value=(True, "Lock acquired"),
+        ),
+        patch("aipass.ai_mail.apps.handlers.dispatch.daemon.log_dispatch"),
+        patch(
+            "aipass.ai_mail.apps.handlers.dispatch.daemon.send_notification",
+            create=True,
+        ),
+    ):
+        result = spawn_agent(branch_path, "@testbranch", message, config, state)
+
+    assert result is True
+
+
+def test_spawn_agent_no_auth_check_without_auto_execute(tmp_path, monkeypatch):
+    """Non-auto_execute email skips sender auth check."""
+    branch_path = tmp_path / "branch"
+    branch_path.mkdir()
+    (branch_path / "logs").mkdir()
+
+    registry = {"branches": []}
+    reg_file = tmp_path / "AIPASS_REGISTRY.json"
+    reg_file.write_text(json.dumps(registry), encoding="utf-8")
+    monkeypatch.setattr(daemon_mod, "BRANCH_REGISTRY", reg_file)
+
+    message = {"from": "@unknown", "id": "msg1", "subject": "Manual"}
+    config = {"max_turns_per_wake": 50}
+    state = {"daily_counts": {}, "session_cycles": {}}
+
+    mock_process = MagicMock()
+    mock_process.pid = 54321
+
+    with (
+        patch(
+            "aipass.ai_mail.apps.handlers.dispatch.daemon.subprocess.Popen",
+            return_value=mock_process,
+        ),
+        patch(
+            "aipass.ai_mail.apps.handlers.dispatch.daemon._acquire_lock",
+            return_value=(True, "Lock acquired"),
+        ),
+        patch("aipass.ai_mail.apps.handlers.dispatch.daemon.log_dispatch"),
+        patch(
+            "aipass.ai_mail.apps.handlers.dispatch.daemon.send_notification",
+            create=True,
+        ),
+    ):
+        result = spawn_agent(branch_path, "@testbranch", message, config, state)
+
+    assert result is True
+
+
+# ---- _write_pid_file atomic tests (DPLAN-0159 S5) ----------------
+
+
+def test_write_pid_file_atomic_no_existing(tmp_path, monkeypatch):
+    """Atomic creation succeeds when no PID file exists."""
+    pid_file = tmp_path / "daemon.pid"
+    monkeypatch.setattr(daemon_mod, "DAEMON_PID_FILE", pid_file)
+
+    result = _write_pid_file()
+
+    assert result is True
+    assert pid_file.exists()
+    assert int(pid_file.read_text().strip()) == os.getpid()
+
+
+def test_write_pid_file_atomic_race_second_loses(tmp_path, monkeypatch):
+    """Second daemon loses the race when both try O_CREAT|O_EXCL."""
+    pid_file = tmp_path / "daemon.pid"
+    monkeypatch.setattr(daemon_mod, "DAEMON_PID_FILE", pid_file)
+
+    # First daemon wins
+    pid_file.write_text(str(os.getpid()), encoding="utf-8")
+
+    # Second daemon: file exists, owner is alive → returns False
+    result = _write_pid_file()
+
+    assert result is False
diff --git a/src/aipass/prax/apps/handlers/monitoring/filesystem_handler.py b/src/aipass/prax/apps/handlers/monitoring/filesystem_handler.py
index aa6a62cc..8fdbfdc3 100644
--- a/src/aipass/prax/apps/handlers/monitoring/filesystem_handler.py
+++ b/src/aipass/prax/apps/handlers/monitoring/filesystem_handler.py
@@ -130,8 +130,20 @@ class MonitoringFileHandler(FileSystemEventHandler):
             return f"⚡ Bash: {desc[:120]}"
         if tool_name in ("Grep", "Glob"):
             return f"🔍 {tool_name}: {inp.get('pattern', '')[:80]}"
-        if tool_name == "Task":
+        if tool_name in ("Task", "Agent"):
             return f"🚀 Agent: {inp.get('description', '')[:80]}"
+        if tool_name == "WebFetch":
+            return f"🌐 WebFetch: {inp.get('url', '')[:80]}"
+        if tool_name == "WebSearch":
+            return f"🔍 WebSearch: {inp.get('query', '')[:80]}"
+        if tool_name == "Monitor":
+            return f"⚡ Monitor: {inp.get('command', '')[:120]}"
+        if tool_name == "Skill":
+            return f"🎯 Skill: {inp.get('skill', '')[:80]}"
+        if tool_name == "NotebookEdit":
+            fp = inp.get("notebook_path", "")
+            short = fp.split("/")[-1] if "/" in fp else fp
+            return f"🔧 NotebookEdit: {short}"
         return f"🔧 {tool_name}"
 
     @staticmethod
diff --git a/src/aipass/seedgo/.seedgo/bypass.json b/src/aipass/seedgo/.seedgo/bypass.json
index 78aa9f0c..736e2a07 100644
--- a/src/aipass/seedgo/.seedgo/bypass.json
+++ b/src/aipass/seedgo/.seedgo/bypass.json
@@ -81,6 +81,11 @@
       ],
       "reason": "Same-branch cross-handler import (allowed per architecture standard). Diagnostics handler imports bypass/ignore_handler for audit ignore patterns."
     },
+    {
+      "file": "apps/handlers/aipass_standards/",
+      "standard": "handlers",
+      "reason": "All 33 checkers import is_bypassed from bypass/utils.py — shared utility extracted from 33 duplicate copies (DPLAN-0159 A2). Same-branch cross-handler import, intentional."
+    },
     {
       "file": "apps/handlers/aipass_standards/cli_check.py",
       "standard": "debug_print",
diff --git a/src/aipass/seedgo/apps/handlers/aipass_standards/architecture_check.py b/src/aipass/seedgo/apps/handlers/aipass_standards/architecture_check.py
index 1b97bd99..71c705c8 100644
--- a/src/aipass/seedgo/apps/handlers/aipass_standards/architecture_check.py
+++ b/src/aipass/seedgo/apps/handlers/aipass_standards/architecture_check.py
@@ -21,6 +21,7 @@ from typing import Dict, List, Optional
 from aipass.seedgo.apps.handlers.bypass.ignore_handler import get_template_ignore_patterns
 from aipass.prax import logger
 from aipass.seedgo.apps.handlers.json import json_handler
+from aipass.seedgo.apps.handlers.bypass.utils import is_bypassed
 
 # Audit scope: all Python files
 AUDIT_SCOPE = "all_files"
@@ -33,26 +34,6 @@ _SRC_PKG_ROOT = PACK_ROOT.parent.parent  # apps/ -> seedgo/ -> src/aipass/
 SPAWN_TEMPLATES_DIR = _SRC_PKG_ROOT / "spawn" / "templates"
 
 
-def is_bypassed(file_path: str, standard: str, line: int | None = None, bypass_rules: list | None = None) -> bool:
-    """Check if a violation should be bypassed"""
-    if not bypass_rules:
-        return False
-    for rule in bypass_rules:
-        # Must match standard
-        if rule.get("standard") and rule.get("standard") != standard:
-            continue
-        # Must match file (check if rule file path is in the full path)
-        rule_file = rule.get("file", "")
-        if rule_file and rule_file not in file_path:
-            continue
-        # Check line-specific bypass
-        rule_lines = rule.get("lines", [])
-        if rule_lines and line is not None and line not in rule_lines:
-            continue
-        return True
-    return False
-
-
 def check_module(module_path: str, bypass_rules: list | None = None) -> Dict:
     """
     Check if module follows architecture standards
diff --git a/src/aipass/seedgo/apps/handlers/aipass_standards/cli_check.py b/src/aipass/seedgo/apps/handlers/aipass_standards/cli_check.py
index 3ed909a7..84c76897 100644
--- a/src/aipass/seedgo/apps/handlers/aipass_standards/cli_check.py
+++ b/src/aipass/seedgo/apps/handlers/aipass_standards/cli_check.py
@@ -19,31 +19,12 @@ from typing import Dict, List, Optional
 
 from aipass.prax import logger
 from aipass.seedgo.apps.handlers.json import json_handler
+from aipass.seedgo.apps.handlers.bypass.utils import is_bypassed
 
 # Audit scope: all Python files
 AUDIT_SCOPE = "all_files"
 
 
-def is_bypassed(file_path: str, standard: str, line: int | None = None, bypass_rules: list | None = None) -> bool:
-    """Check if a violation should be bypassed"""
-    if not bypass_rules:
-        return False
-    for rule in bypass_rules:
-        # Must match standard
-        if rule.get("standard") and rule.get("standard") != standard:
-            continue
-        # Must match file (check if rule file path is in the full path)
-        rule_file = rule.get("file", "")
-        if rule_file and rule_file not in file_path:
-            continue
-        # Check line-specific bypass
-        rule_lines = rule.get("lines", [])
-        if rule_lines and line is not None and line not in rule_lines:
-            continue
-        return True
-    return False
-
-
 def check_module(module_path: str, bypass_rules: list | None = None) -> Dict:
     """
     Check if module follows CLI standards
diff --git a/src/aipass/seedgo/apps/handlers/aipass_standards/cli_flags_check.py b/src/aipass/seedgo/apps/handlers/aipass_standards/cli_flags_check.py
index 5ed60fb3..1555cb5c 100644
--- a/src/aipass/seedgo/apps/handlers/aipass_standards/cli_flags_check.py
+++ b/src/aipass/seedgo/apps/handlers/aipass_standards/cli_flags_check.py
@@ -27,28 +27,12 @@ from typing import Dict, List
 
 from aipass.prax import logger
 from aipass.seedgo.apps.handlers.json import json_handler
+from aipass.seedgo.apps.handlers.bypass.utils import is_bypassed
 
 # Audit scope: entry points only (apps/{name}.py)
 AUDIT_SCOPE = "entry_point"
 
 
-def is_bypassed(file_path: str, standard: str, line: int | None = None, bypass_rules: list | None = None) -> bool:
-    """Check if a violation should be bypassed"""
-    if not bypass_rules:
-        return False
-    for rule in bypass_rules:
-        if rule.get("standard") and rule.get("standard") != standard:
-            continue
-        rule_file = rule.get("file", "")
-        if rule_file and rule_file not in file_path:
-            continue
-        rule_lines = rule.get("lines", [])
-        if rule_lines and line is not None and line not in rule_lines:
-            continue
-        return True
-    return False
-
-
 def check_module(module_path: str, bypass_rules: list | None = None) -> Dict:
     """
     Check if module follows CLI flags standards
diff --git a/src/aipass/seedgo/apps/handlers/aipass_standards/commented_logger_check.py b/src/aipass/seedgo/apps/handlers/aipass_standards/commented_logger_check.py
index d1d870d1..53878939 100644
--- a/src/aipass/seedgo/apps/handlers/aipass_standards/commented_logger_check.py
+++ b/src/aipass/seedgo/apps/handlers/aipass_standards/commented_logger_check.py
@@ -28,6 +28,7 @@ from typing import Dict
 
 from aipass.prax import logger
 from aipass.seedgo.apps.handlers.json import json_handler
+from aipass.seedgo.apps.handlers.bypass.utils import is_bypassed
 
 # Audit scope: scan every .py file, not just entry point
 AUDIT_SCOPE = "all_files"
@@ -36,23 +37,6 @@ AUDIT_SCOPE = "all_files"
 _COMMENTED_LOGGER_RE = re.compile(r"#\s*logger\.(error|warning|warn|info|exception|critical|debug)\s*\(")
 
 
-def is_bypassed(file_path: str, standard: str, line: int | None = None, bypass_rules: list | None = None) -> bool:
-    """Check if a violation should be bypassed."""
-    if not bypass_rules:
-        return False
-    for rule in bypass_rules:
-        if rule.get("standard") and rule.get("standard") != standard:
-            continue
-        rule_file = rule.get("file", "")
-        if rule_file and rule_file not in file_path:
-            continue
-        rule_lines = rule.get("lines", [])
-        if rule_lines and line is not None and line not in rule_lines:
-            continue
-        return True
-    return False
-
-
 def check_module(module_path: str, bypass_rules: list | None = None) -> Dict:
     """
     Check a Python file for commented-out logger calls.
diff --git a/src/aipass/seedgo/apps/handlers/aipass_standards/dead_code_check.py b/src/aipass/seedgo/apps/handlers/aipass_standards/dead_code_check.py
index 6ae020e6..0e521676 100644
--- a/src/aipass/seedgo/apps/handlers/aipass_standards/dead_code_check.py
+++ b/src/aipass/seedgo/apps/handlers/aipass_standards/dead_code_check.py
@@ -23,6 +23,7 @@ from pathlib import Path
 
 from aipass.prax import logger
 from aipass.seedgo.apps.handlers.json import json_handler
+from aipass.seedgo.apps.handlers.bypass.utils import is_bypassed
 
 AUDIT_SCOPE = "branch_level"
 
@@ -58,23 +59,6 @@ _SKIP_DIRS = {
 # =============================================
 
 
-def is_bypassed(file_path: str, standard: str, line: int | None = None, bypass_rules: list | None = None) -> bool:
-    """Check if a violation should be bypassed."""
-    if not bypass_rules:
-        return False
-    for rule in bypass_rules:
-        if rule.get("standard") and rule.get("standard") != standard:
-            continue
-        rule_file = rule.get("file", "")
-        if rule_file and rule_file not in file_path:
-            continue
-        rule_lines = rule.get("lines", [])
-        if rule_lines and line is not None and line not in rule_lines:
-            continue
-        return True
-    return False
-
-
 # =============================================
 # FILE COLLECTION
 # =============================================
diff --git a/src/aipass/seedgo/apps/handlers/aipass_standards/debug_print_check.py b/src/aipass/seedgo/apps/handlers/aipass_standards/debug_print_check.py
index c4e44abf..0d260f1e 100644
--- a/src/aipass/seedgo/apps/handlers/aipass_standards/debug_print_check.py
+++ b/src/aipass/seedgo/apps/handlers/aipass_standards/debug_print_check.py
@@ -20,6 +20,7 @@ from typing import Dict
 
 from aipass.prax import logger
 from aipass.seedgo.apps.handlers.json import json_handler
+from aipass.seedgo.apps.handlers.bypass.utils import is_bypassed
 
 AUDIT_SCOPE = "all_files"
 
@@ -34,26 +35,6 @@ _DOCTEST_RE = re.compile(r"^\s*(\.\.\.|>>>)\s")
 _TEST_FILE_RE = re.compile(r"^(test_.+|.+_test|conftest)\.py$")
 
 
-def is_bypassed(file_path: str, standard: str, line: int | None = None, bypass_rules: list | None = None) -> bool:
-    """Check if a violation should be bypassed."""
-    if not bypass_rules:
-        return False
-    for rule in bypass_rules:
-        # Must match standard
-        if rule.get("standard") and rule.get("standard") != standard:
-            continue
-        # Must match file (check if rule file path is in the full path)
-        rule_file = rule.get("file", "")
-        if rule_file and rule_file not in file_path:
-            continue
-        # Check line-specific bypass
-        rule_lines = rule.get("lines", [])
-        if rule_lines and line is not None and line not in rule_lines:
-            continue
-        return True
-    return False
-
-
 def _is_in_main_block(lines: list[str], lineno: int) -> bool:
     """
     Return True if the line at *lineno* (1-based) is inside an
diff --git a/src/aipass/seedgo/apps/handlers/aipass_standards/deep_nesting_check.py b/src/aipass/seedgo/apps/handlers/aipass_standards/deep_nesting_check.py
index 5dc0e7a2..4b4848b2 100644
--- a/src/aipass/seedgo/apps/handlers/aipass_standards/deep_nesting_check.py
+++ b/src/aipass/seedgo/apps/handlers/aipass_standards/deep_nesting_check.py
@@ -22,6 +22,7 @@ from pathlib import Path
 
 from aipass.prax import logger
 from aipass.seedgo.apps.handlers.json import json_handler
+from aipass.seedgo.apps.handlers.bypass.utils import is_bypassed
 
 AUDIT_SCOPE = "all_files"
 
@@ -35,23 +36,6 @@ DEPTH_LIMIT = 4
 # -- Bypass helper -----------------------------------------------------------
 
 
-def is_bypassed(file_path: str, standard: str, line: int | None = None, bypass_rules: list | None = None) -> bool:
-    """Check if a violation should be bypassed."""
-    if not bypass_rules:
-        return False
-    for rule in bypass_rules:
-        if rule.get("standard") and rule.get("standard") != standard:
-            continue
-        rule_file = rule.get("file", "")
-        if rule_file and rule_file not in file_path:
-            continue
-        rule_lines = rule.get("lines", [])
-        if rule_lines and line is not None and line not in rule_lines:
-            continue
-        return True
-    return False
-
-
 # -- AST depth analysis ------------------------------------------------------
 
 
diff --git a/src/aipass/seedgo/apps/handlers/aipass_standards/documentation_check.py b/src/aipass/seedgo/apps/handlers/aipass_standards/documentation_check.py
index cbdaff5c..195deaa1 100644
--- a/src/aipass/seedgo/apps/handlers/aipass_standards/documentation_check.py
+++ b/src/aipass/seedgo/apps/handlers/aipass_standards/documentation_check.py
@@ -19,28 +19,12 @@ from typing import Dict, List
 
 from aipass.prax import logger
 from aipass.seedgo.apps.handlers.json import json_handler
+from aipass.seedgo.apps.handlers.bypass.utils import is_bypassed
 
 # Audit scope: all Python files
 AUDIT_SCOPE = "all_files"
 
 
-def is_bypassed(file_path: str, standard: str, line: int | None = None, bypass_rules: list | None = None) -> bool:
-    """Check if a violation should be bypassed"""
-    if not bypass_rules:
-        return False
-    for rule in bypass_rules:
-        if rule.get("standard") and rule.get("standard") != standard:
-            continue
-        rule_file = rule.get("file", "")
-        if rule_file and rule_file not in file_path:
-            continue
-        rule_lines = rule.get("lines", [])
-        if rule_lines and line is not None and line not in rule_lines:
-            continue
-        return True
-    return False
-
-
 def check_module(module_path: str, bypass_rules: list | None = None) -> Dict:
     """
     Check if module follows documentation standards.
diff --git a/src/aipass/seedgo/apps/handlers/aipass_standards/encapsulation_check.py b/src/aipass/seedgo/apps/handlers/aipass_standards/encapsulation_check.py
index dc53c3a1..5ee62e43 100644
--- a/src/aipass/seedgo/apps/handlers/aipass_standards/encapsulation_check.py
+++ b/src/aipass/seedgo/apps/handlers/aipass_standards/encapsulation_check.py
@@ -23,6 +23,7 @@ from typing import Dict, List, Optional
 
 from aipass.prax import logger
 from aipass.seedgo.apps.handlers.json import json_handler
+from aipass.seedgo.apps.handlers.bypass.utils import is_bypassed
 
 # Audit scope: all Python files
 AUDIT_SCOPE = "all_files"
@@ -38,26 +39,6 @@ def _find_registry() -> Path:
     return Path.cwd() / "AIPASS_REGISTRY.json"
 
 
-def is_bypassed(file_path: str, standard: str, line: int | None = None, bypass_rules: list | None = None) -> bool:
-    """Check if a violation should be bypassed"""
-    if not bypass_rules:
-        return False
-    for rule in bypass_rules:
-        # Must match standard
-        if rule.get("standard") and rule.get("standard") != standard:
-            continue
-        # Must match file (check if rule file path is in the full path)
-        rule_file = rule.get("file", "")
-        if rule_file and rule_file not in file_path:
-            continue
-        # Check line-specific bypass
-        rule_lines = rule.get("lines", [])
-        if rule_lines and line is not None and line not in rule_lines:
-            continue
-        return True
-    return False
-
-
 def get_branch_from_path(file_path: str) -> Optional[Dict]:
     """Detect which branch a file belongs to using AIPASS_REGISTRY.json."""
     try:
diff --git a/src/aipass/seedgo/apps/handlers/aipass_standards/error_handling_check.py b/src/aipass/seedgo/apps/handlers/aipass_standards/error_handling_check.py
index 4a3be8be..ee5787c6 100644
--- a/src/aipass/seedgo/apps/handlers/aipass_standards/error_handling_check.py
+++ b/src/aipass/seedgo/apps/handlers/aipass_standards/error_handling_check.py
@@ -17,28 +17,12 @@ from pathlib import Path
 from typing import Dict, List, Optional
 from aipass.prax import logger
 from aipass.seedgo.apps.handlers.json import json_handler
+from aipass.seedgo.apps.handlers.bypass.utils import is_bypassed
 
 # Audit scope: all Python files
 AUDIT_SCOPE = "all_files"
 
 
-def is_bypassed(file_path: str, standard: str, line: int | None = None, bypass_rules: list | None = None) -> bool:
-    """Check if a violation should be bypassed"""
-    if not bypass_rules:
-        return False
-    for rule in bypass_rules:
-        if rule.get("standard") and rule.get("standard") != standard:
-            continue
-        rule_file = rule.get("file", "")
-        if rule_file and rule_file not in file_path:
-            continue
-        rule_lines = rule.get("lines", [])
-        if rule_lines and line is not None and line not in rule_lines:
-            continue
-        return True
-    return False
-
-
 def check_module(module_path: str, bypass_rules: list | None = None) -> Dict:
     """Check if module follows error handling standards"""
     checks = []
diff --git a/src/aipass/seedgo/apps/handlers/aipass_standards/handler_import_check.py b/src/aipass/seedgo/apps/handlers/aipass_standards/handler_import_check.py
index 554af876..f5657d2f 100644
--- a/src/aipass/seedgo/apps/handlers/aipass_standards/handler_import_check.py
+++ b/src/aipass/seedgo/apps/handlers/aipass_standards/handler_import_check.py
@@ -20,6 +20,7 @@ from pathlib import Path
 
 from aipass.prax import logger
 from aipass.seedgo.apps.handlers.json import json_handler
+from aipass.seedgo.apps.handlers.bypass.utils import is_bypassed
 
 AUDIT_SCOPE = "branch_level"
 
@@ -29,28 +30,6 @@ AUDIT_SCOPE = "branch_level"
 # =============================================
 
 
-def is_bypassed(
-    file_path: str,
-    standard: str,
-    line: int | None = None,
-    bypass_rules: list | None = None,
-) -> bool:
-    """Check if a violation should be bypassed."""
-    if not bypass_rules:
-        return False
-    for rule in bypass_rules:
-        if rule.get("standard") and rule.get("standard") != standard:
-            continue
-        rule_file = rule.get("file", "")
-        if rule_file and rule_file not in file_path:
-            continue
-        rule_lines = rule.get("lines", [])
-        if rule_lines and line is not None and line not in rule_lines:
-            continue
-        return True
-    return False
-
-
 # =============================================
 # BRANCH-LEVEL CHECK (audit pipeline entry)
 # =============================================
diff --git a/src/aipass/seedgo/apps/handlers/aipass_standards/handlers_check.py b/src/aipass/seedgo/apps/handlers/aipass_standards/handlers_check.py
index 60c6c49d..34bcadf8 100644
--- a/src/aipass/seedgo/apps/handlers/aipass_standards/handlers_check.py
+++ b/src/aipass/seedgo/apps/handlers/aipass_standards/handlers_check.py
@@ -19,31 +19,12 @@ from typing import Dict, List, Optional
 
 from aipass.prax import logger
 from aipass.seedgo.apps.handlers.json import json_handler
+from aipass.seedgo.apps.handlers.bypass.utils import is_bypassed
 
 # Audit scope: all Python files
 AUDIT_SCOPE = "all_files"
 
 
-def is_bypassed(file_path: str, standard: str, line: int | None = None, bypass_rules: list | None = None) -> bool:
-    """Check if a violation should be bypassed"""
-    if not bypass_rules:
-        return False
-    for rule in bypass_rules:
-        # Must match standard
-        if rule.get("standard") and rule.get("standard") != standard:
-            continue
-        # Must match file (check if rule file path is in the full path)
-        rule_file = rule.get("file", "")
-        if rule_file and rule_file not in file_path:
-            continue
-        # Check line-specific bypass
-        rule_lines = rule.get("lines", [])
-        if rule_lines and line is not None and line not in rule_lines:
-            continue
-        return True
-    return False
-
-
 def check_module(module_path: str, bypass_rules: list | None = None) -> Dict:
     """
     Check if handler follows handler standards
diff --git a/src/aipass/seedgo/apps/handlers/aipass_standards/hardcoded_key_check.py b/src/aipass/seedgo/apps/handlers/aipass_standards/hardcoded_key_check.py
index 9c424188..7d390a3e 100644
--- a/src/aipass/seedgo/apps/handlers/aipass_standards/hardcoded_key_check.py
+++ b/src/aipass/seedgo/apps/handlers/aipass_standards/hardcoded_key_check.py
@@ -20,6 +20,7 @@ from pathlib import Path
 
 from aipass.prax import logger
 from aipass.seedgo.apps.handlers.json import json_handler
+from aipass.seedgo.apps.handlers.bypass.utils import is_bypassed
 
 AUDIT_SCOPE = "all_files"
 
@@ -98,23 +99,6 @@ _PAT_REGEX_CONTEXT = re.compile(r"""re\.compile|r["']|\\[dws\^]""")
 # -- Helpers ----------------------------------------------------------------
 
 
-def is_bypassed(file_path: str, standard: str, line: int | None = None, bypass_rules: list | None = None) -> bool:
-    """Check if a violation should be bypassed."""
-    if not bypass_rules:
-        return False
-    for rule in bypass_rules:
-        if rule.get("standard") and rule.get("standard") != standard:
-            continue
-        rule_file = rule.get("file", "")
-        if rule_file and rule_file not in file_path:
-            continue
-        rule_lines = rule.get("lines", [])
-        if rule_lines and line is not None and line not in rule_lines:
-            continue
-        return True
-    return False
-
-
 def _is_placeholder(key_value: str) -> bool:
     """Return True if the captured key value looks like a placeholder."""
     if _PLACEHOLDER_VALUE_RE.search(key_value):
diff --git a/src/aipass/seedgo/apps/handlers/aipass_standards/help_text_check.py b/src/aipass/seedgo/apps/handlers/aipass_standards/help_text_check.py
index 41338217..e6750dad 100644
--- a/src/aipass/seedgo/apps/handlers/aipass_standards/help_text_check.py
+++ b/src/aipass/seedgo/apps/handlers/aipass_standards/help_text_check.py
@@ -26,6 +26,7 @@ from typing import Dict
 
 from aipass.prax import logger
 from aipass.seedgo.apps.handlers.json import json_handler
+from aipass.seedgo.apps.handlers.bypass.utils import is_bypassed
 
 AUDIT_SCOPE = "all_files"
 
@@ -68,23 +69,6 @@ def _line_has_python_instruction(line: str) -> bool:
 # ── Bypass helper ───────────────────────────────────────────────────────
 
 
-def is_bypassed(file_path: str, standard: str, line: int | None = None, bypass_rules: list | None = None) -> bool:
-    """Check if a violation should be bypassed."""
-    if not bypass_rules:
-        return False
-    for rule in bypass_rules:
-        if rule.get("standard") and rule.get("standard") != standard:
-            continue
-        rule_file = rule.get("file", "")
-        if rule_file and rule_file not in file_path:
-            continue
-        rule_lines = rule.get("lines", [])
-        if rule_lines and line is not None and line not in rule_lines:
-            continue
-        return True
-    return False
-
-
 # ── Main checker entry point ────────────────────────────────────────────
 
 
diff --git a/src/aipass/seedgo/apps/handlers/aipass_standards/imports_check.py b/src/aipass/seedgo/apps/handlers/aipass_standards/imports_check.py
index 82e19edd..719f680e 100644
--- a/src/aipass/seedgo/apps/handlers/aipass_standards/imports_check.py
+++ b/src/aipass/seedgo/apps/handlers/aipass_standards/imports_check.py
@@ -20,28 +20,12 @@ from typing import Dict, List, Optional
 
 from aipass.prax import logger
 from aipass.seedgo.apps.handlers.json import json_handler
+from aipass.seedgo.apps.handlers.bypass.utils import is_bypassed
 
 # Audit scope: all Python files
 AUDIT_SCOPE = "all_files"
 
 
-def is_bypassed(file_path: str, standard: str, line: int | None = None, bypass_rules: list | None = None) -> bool:
-    """Check if a violation should be bypassed"""
-    if not bypass_rules:
-        return False
-    for rule in bypass_rules:
-        if rule.get("standard") and rule.get("standard") != standard:
-            continue
-        rule_file = rule.get("file", "")
-        if rule_file and rule_file not in file_path:
-            continue
-        rule_lines = rule.get("lines", [])
-        if rule_lines and line is not None and line not in rule_lines:
-            continue
-        return True
-    return False
-
-
 def check_module(module_path: str, bypass_rules: list | None = None) -> Dict:
     """
     Check if module follows import standards for pip packages.
diff --git a/src/aipass/seedgo/apps/handlers/aipass_standards/introspection_check.py b/src/aipass/seedgo/apps/handlers/aipass_standards/introspection_check.py
index 1d5e1f56..711ecd87 100644
--- a/src/aipass/seedgo/apps/handlers/aipass_standards/introspection_check.py
+++ b/src/aipass/seedgo/apps/handlers/aipass_standards/introspection_check.py
@@ -23,31 +23,12 @@ from pathlib import Path
 from typing import Dict, Optional
 from aipass.prax import logger
 from aipass.seedgo.apps.handlers.json import json_handler
+from aipass.seedgo.apps.handlers.bypass.utils import is_bypassed
 
 # Run on ALL .py files so modules (apps/modules/*.py) are checked, not just entry points
 AUDIT_SCOPE = "all_files"
 
 
-def is_bypassed(file_path: str, standard: str, line: int | None = None, bypass_rules: list | None = None) -> bool:
-    """Check if a violation should be bypassed"""
-    if not bypass_rules:
-        return False
-    for rule in bypass_rules:
-        # Must match standard
-        if rule.get("standard") and rule.get("standard") != standard:
-            continue
-        # Must match file (check if rule file path is in the full path)
-        rule_file = rule.get("file", "")
-        if rule_file and rule_file not in file_path:
-            continue
-        # Check line-specific bypass
-        rule_lines = rule.get("lines", [])
-        if rule_lines and line is not None and line not in rule_lines:
-            continue
-        return True
-    return False
-
-
 def check_module(module_path: str, bypass_rules: list | None = None) -> Dict:
     """
     Check if module follows introspection standards
diff --git a/src/aipass/seedgo/apps/handlers/aipass_standards/json_structure_check.py b/src/aipass/seedgo/apps/handlers/aipass_standards/json_structure_check.py
index 438ccce7..c78d79b8 100644
--- a/src/aipass/seedgo/apps/handlers/aipass_standards/json_structure_check.py
+++ b/src/aipass/seedgo/apps/handlers/aipass_standards/json_structure_check.py
@@ -26,28 +26,12 @@ from pathlib import Path
 from typing import Dict, List
 
 from aipass.prax import logger
+from aipass.seedgo.apps.handlers.bypass.utils import is_bypassed
 
 # Audit scope: scan every .py file, not just entry point
 AUDIT_SCOPE = "all_files"
 
 
-def is_bypassed(file_path: str, standard: str, line: int | None = None, bypass_rules: list | None = None) -> bool:
-    """Check if a violation should be bypassed"""
-    if not bypass_rules:
-        return False
-    for rule in bypass_rules:
-        if rule.get("standard") and rule.get("standard") != standard:
-            continue
-        rule_file = rule.get("file", "")
-        if rule_file and rule_file not in file_path:
-            continue
-        rule_lines = rule.get("lines", [])
-        if rule_lines and line is not None and line not in rule_lines:
-            continue
-        return True
-    return False
-
-
 def check_module(module_path: str, bypass_rules: list | None = None) -> Dict:
     """
     Check if module follows JSON structure standards.
diff --git a/src/aipass/seedgo/apps/handlers/aipass_standards/log_handler_check.py b/src/aipass/seedgo/apps/handlers/aipass_standards/log_handler_check.py
index 428965a3..9d6d1909 100644
--- a/src/aipass/seedgo/apps/handlers/aipass_standards/log_handler_check.py
+++ b/src/aipass/seedgo/apps/handlers/aipass_standards/log_handler_check.py
@@ -25,28 +25,12 @@ from pathlib import Path
 from typing import Dict, List
 from aipass.prax import logger
 from aipass.seedgo.apps.handlers.json import json_handler
+from aipass.seedgo.apps.handlers.bypass.utils import is_bypassed
 
 # Audit scope: all Python files
 AUDIT_SCOPE = "all_files"
 
 
-def is_bypassed(file_path: str, standard: str, line: int | None = None, bypass_rules: list | None = None) -> bool:
-    """Check if a violation should be bypassed"""
-    if not bypass_rules:
-        return False
-    for rule in bypass_rules:
-        if rule.get("standard") and rule.get("standard") != standard:
-            continue
-        rule_file = rule.get("file", "")
-        if rule_file and rule_file not in file_path:
-            continue
-        rule_lines = rule.get("lines", [])
-        if rule_lines and line is not None and line not in rule_lines:
-            continue
-        return True
-    return False
-
-
 def check_module(module_path: str, bypass_rules: list | None = None) -> Dict:
     """
     Check if module follows log handler standards
diff --git a/src/aipass/seedgo/apps/handlers/aipass_standards/log_level_check.py b/src/aipass/seedgo/apps/handlers/aipass_standards/log_level_check.py
index 98a9be78..6991a26a 100644
--- a/src/aipass/seedgo/apps/handlers/aipass_standards/log_level_check.py
+++ b/src/aipass/seedgo/apps/handlers/aipass_standards/log_level_check.py
@@ -24,29 +24,13 @@ import re
 from pathlib import Path
 from typing import Dict, List, Optional
 from aipass.prax import logger
+from aipass.seedgo.apps.handlers.bypass.utils import is_bypassed
 from aipass.seedgo.apps.handlers.json import json_handler
 
 # Audit scope: all Python files
 AUDIT_SCOPE = "all_files"
 
 
-def is_bypassed(file_path: str, standard: str, line: int | None = None, bypass_rules: list | None = None) -> bool:
-    """Check if a violation should be bypassed"""
-    if not bypass_rules:
-        return False
-    for rule in bypass_rules:
-        if rule.get("standard") and rule.get("standard") != standard:
-            continue
-        rule_file = rule.get("file", "")
-        if rule_file and rule_file not in file_path:
-            continue
-        rule_lines = rule.get("lines", [])
-        if rule_lines and line is not None and line not in rule_lines:
-            continue
-        return True
-    return False
-
-
 def check_module(module_path: str, bypass_rules: list | None = None) -> Dict:
     """
     Check if module follows log level hygiene standards
diff --git a/src/aipass/seedgo/apps/handlers/aipass_standards/log_structure_check.py b/src/aipass/seedgo/apps/handlers/aipass_standards/log_structure_check.py
index ff6c7adb..6d5b78ae 100644
--- a/src/aipass/seedgo/apps/handlers/aipass_standards/log_structure_check.py
+++ b/src/aipass/seedgo/apps/handlers/aipass_standards/log_structure_check.py
@@ -21,6 +21,7 @@ from pathlib import Path
 from typing import Dict
 from aipass.prax import logger
 from aipass.seedgo.apps.handlers.json import json_handler
+from aipass.seedgo.apps.handlers.bypass.utils import is_bypassed
 
 # Audit scope: all Python files
 AUDIT_SCOPE = "all_files"
@@ -50,23 +51,6 @@ def _find_branch_root(file_path: Path) -> Path:
     return file_path.parent
 
 
-def is_bypassed(file_path: str, standard: str, line: int | None = None, bypass_rules: list | None = None) -> bool:
-    """Check if a violation should be bypassed."""
-    if not bypass_rules:
-        return False
-    for rule in bypass_rules:
-        if rule.get("standard") and rule.get("standard") != standard:
-            continue
-        rule_file = rule.get("file", "")
-        if rule_file and rule_file not in file_path:
-            continue
-        rule_lines = rule.get("lines", [])
-        if rule_lines and line is not None and line not in rule_lines:
-            continue
-        return True
-    return False
-
-
 def check_module(module_path: str, bypass_rules: list | None = None) -> Dict:
     """
     Check module logging structure against the two-tier model.
diff --git a/src/aipass/seedgo/apps/handlers/aipass_standards/log_visibility_check.py b/src/aipass/seedgo/apps/handlers/aipass_standards/log_visibility_check.py
index 03d56bc8..6713de7e 100644
--- a/src/aipass/seedgo/apps/handlers/aipass_standards/log_visibility_check.py
+++ b/src/aipass/seedgo/apps/handlers/aipass_standards/log_visibility_check.py
@@ -25,6 +25,7 @@ from pathlib import Path
 from typing import Dict, List
 from aipass.prax import logger
 from aipass.seedgo.apps.handlers.json import json_handler
+from aipass.seedgo.apps.handlers.bypass.utils import is_bypassed
 
 # Audit scope: all Python files
 AUDIT_SCOPE = "all_files"
@@ -34,23 +35,6 @@ _GETLOGGER_PAT = r"logging" + r"\.getLogger\s*\("
 _FILEHANDLER_PAT = r"logging" + r"\.FileHandler\s*\("
 
 
-def is_bypassed(file_path: str, standard: str, line: int | None = None, bypass_rules: list | None = None) -> bool:
-    """Check if a violation should be bypassed"""
-    if not bypass_rules:
-        return False
-    for rule in bypass_rules:
-        if rule.get("standard") and rule.get("standard") != standard:
-            continue
-        rule_file = rule.get("file", "")
-        if rule_file and rule_file not in file_path:
-            continue
-        rule_lines = rule.get("lines", [])
-        if rule_lines and line is not None and line not in rule_lines:
-            continue
-        return True
-    return False
-
-
 def check_module(module_path: str, bypass_rules: list | None = None) -> Dict:
     """
     Check if module's logging is visible to Prax monitor (system_logs/).
diff --git a/src/aipass/seedgo/apps/handlers/aipass_standards/meta_check.py b/src/aipass/seedgo/apps/handlers/aipass_standards/meta_check.py
index 5fc0d1a0..c9da5c32 100644
--- a/src/aipass/seedgo/apps/handlers/aipass_standards/meta_check.py
+++ b/src/aipass/seedgo/apps/handlers/aipass_standards/meta_check.py
@@ -31,6 +31,7 @@ from pathlib import Path
 from typing import Dict, List
 from aipass.prax import logger
 from aipass.seedgo.apps.handlers.json import json_handler
+from aipass.seedgo.apps.handlers.bypass.utils import is_bypassed
 
 AUDIT_SCOPE = "all_files"
 
@@ -50,23 +51,6 @@ REQUIRED_FIELDS = {
 }
 
 
-def is_bypassed(file_path: str, standard: str, line: int | None = None, bypass_rules: list | None = None) -> bool:
-    """Check if a violation should be bypassed."""
-    if not bypass_rules:
-        return False
-    for rule in bypass_rules:
-        if rule.get("standard") and rule.get("standard") != standard:
-            continue
-        rule_file = rule.get("file", "")
-        if rule_file and rule_file not in file_path:
-            continue
-        rule_lines = rule.get("lines", [])
-        if rule_lines and line is not None and line not in rule_lines:
-            continue
-        return True
-    return False
-
-
 def check_module(module_path: str, bypass_rules: list | None = None) -> Dict:
     """
     Check if module has a valid library-profile META block.
diff --git a/src/aipass/seedgo/apps/handlers/aipass_standards/modules_check.py b/src/aipass/seedgo/apps/handlers/aipass_standards/modules_check.py
index 2aa18052..2b7bc906 100644
--- a/src/aipass/seedgo/apps/handlers/aipass_standards/modules_check.py
+++ b/src/aipass/seedgo/apps/handlers/aipass_standards/modules_check.py
@@ -19,31 +19,12 @@ from pathlib import Path
 from typing import Dict, List, Optional
 from aipass.prax import logger
 from aipass.seedgo.apps.handlers.json import json_handler
+from aipass.seedgo.apps.handlers.bypass.utils import is_bypassed
 
 # Audit scope: all Python files
 AUDIT_SCOPE = "all_files"
 
 
-def is_bypassed(file_path: str, standard: str, line: int | None = None, bypass_rules: list | None = None) -> bool:
-    """Check if a violation should be bypassed"""
-    if not bypass_rules:
-        return False
-    for rule in bypass_rules:
-        # Must match standard
-        if rule.get("standard") and rule.get("standard") != standard:
-            continue
-        # Must match file (check if rule file path is in the full path)
-        rule_file = rule.get("file", "")
-        if rule_file and rule_file not in file_path:
-            continue
-        # Check line-specific bypass
-        rule_lines = rule.get("lines", [])
-        if rule_lines and line is not None and line not in rule_lines:
-            continue
-        return True
-    return False
-
-
 def check_module(module_path: str, bypass_rules: list | None = None) -> Dict:
     """
     Check if module follows module standards
diff --git a/src/aipass/seedgo/apps/handlers/aipass_standards/naming_check.py b/src/aipass/seedgo/apps/handlers/aipass_standards/naming_check.py
index c8c3831a..9c535c01 100644
--- a/src/aipass/seedgo/apps/handlers/aipass_standards/naming_check.py
+++ b/src/aipass/seedgo/apps/handlers/aipass_standards/naming_check.py
@@ -18,31 +18,12 @@ from pathlib import Path
 from typing import Dict, Optional
 from aipass.prax import logger
 from aipass.seedgo.apps.handlers.json import json_handler
+from aipass.seedgo.apps.handlers.bypass.utils import is_bypassed
 
 # Audit scope: all Python files
 AUDIT_SCOPE = "all_files"
 
 
-def is_bypassed(file_path: str, standard: str, line: int | None = None, bypass_rules: list | None = None) -> bool:
-    """Check if a violation should be bypassed"""
-    if not bypass_rules:
-        return False
-    for rule in bypass_rules:
-        # Must match standard
-        if rule.get("standard") and rule.get("standard") != standard:
-            continue
-        # Must match file (check if rule file path is in the full path)
-        rule_file = rule.get("file", "")
-        if rule_file and rule_file not in file_path:
-            continue
-        # Check line-specific bypass
-        rule_lines = rule.get("lines", [])
-        if rule_lines and line is not None and line not in rule_lines:
-            continue
-        return True
-    return False
-
-
 def check_module(module_path: str, bypass_rules: list | None = None) -> Dict:
     """
     Check if module follows naming standards
diff --git a/src/aipass/seedgo/apps/handlers/aipass_standards/permission_flags_check.py b/src/aipass/seedgo/apps/handlers/aipass_standards/permission_flags_check.py
index 1b98959e..a12a989a 100644
--- a/src/aipass/seedgo/apps/handlers/aipass_standards/permission_flags_check.py
+++ b/src/aipass/seedgo/apps/handlers/aipass_standards/permission_flags_check.py
@@ -26,28 +26,12 @@ from pathlib import Path
 from typing import Dict, List
 from aipass.prax import logger
 from aipass.seedgo.apps.handlers.json import json_handler
+from aipass.seedgo.apps.handlers.bypass.utils import is_bypassed
 
 # Audit scope: all Python files
 AUDIT_SCOPE = "all_files"
 
 
-def is_bypassed(file_path: str, standard: str, line: int | None = None, bypass_rules: list | None = None) -> bool:
-    """Check if a violation should be bypassed"""
-    if not bypass_rules:
-        return False
-    for rule in bypass_rules:
-        if rule.get("standard") and rule.get("standard") != standard:
-            continue
-        rule_file = rule.get("file", "")
-        if rule_file and rule_file not in file_path:
-            continue
-        rule_lines = rule.get("lines", [])
-        if rule_lines and line is not None and line not in rule_lines:
-            continue
-        return True
-    return False
-
-
 def _get_non_code_lines(lines: List[str]) -> set:
     """
     Build a set of line numbers that are inside docstrings or comments.
diff --git a/src/aipass/seedgo/apps/handlers/aipass_standards/readme_check.py b/src/aipass/seedgo/apps/handlers/aipass_standards/readme_check.py
index 9a250310..932c9dc0 100644
--- a/src/aipass/seedgo/apps/handlers/aipass_standards/readme_check.py
+++ b/src/aipass/seedgo/apps/handlers/aipass_standards/readme_check.py
@@ -27,28 +27,12 @@ from pathlib import Path
 from typing import Dict, List, Optional
 from aipass.prax import logger
 from aipass.seedgo.apps.handlers.json import json_handler
+from aipass.seedgo.apps.handlers.bypass.utils import is_bypassed
 
 # Audit scope: entry points only (apps/{name}.py)
 AUDIT_SCOPE = "entry_point"
 
 
-def is_bypassed(file_path: str, standard: str, line: int | None = None, bypass_rules: list | None = None) -> bool:
-    """Check if a violation should be bypassed"""
-    if not bypass_rules:
-        return False
-    for rule in bypass_rules:
-        if rule.get("standard") and rule.get("standard") != standard:
-            continue
-        rule_file = rule.get("file", "")
-        if rule_file and rule_file not in file_path:
-            continue
-        rule_lines = rule.get("lines", [])
-        if rule_lines and line is not None and line not in rule_lines:
-            continue
-        return True
-    return False
-
-
 def check_module(module_path: str, bypass_rules: list | None = None) -> Dict:
     """
     Check if branch README follows standards
diff --git a/src/aipass/seedgo/apps/handlers/aipass_standards/ruff_check.py b/src/aipass/seedgo/apps/handlers/aipass_standards/ruff_check.py
index b127be53..496b2b7a 100644
--- a/src/aipass/seedgo/apps/handlers/aipass_standards/ruff_check.py
+++ b/src/aipass/seedgo/apps/handlers/aipass_standards/ruff_check.py
@@ -31,25 +31,12 @@ from typing import Dict
 
 from aipass.prax import logger
 from aipass.seedgo.apps.handlers.json import json_handler
+from aipass.seedgo.apps.handlers.bypass.utils import is_bypassed
 
 AUDIT_SCOPE = "branch_level"
 ADVISORY = True
 
 
-def is_bypassed(file_path: str, standard: str, bypass_rules: list | None = None) -> bool:
-    """Check if a violation should be bypassed via standard bypass.json rules."""
-    if not bypass_rules:
-        return False
-    for rule in bypass_rules:
-        if rule.get("standard") and rule.get("standard") != standard:
-            continue
-        rule_file = rule.get("file", "")
-        if rule_file and rule_file not in file_path:
-            continue
-        return True
-    return False
-
-
 def _load_ruff_bypass(branch_path: Path) -> list:
     """Load .seedgo/ruff_bypass.json for ruff-specific bypass rules."""
     bypass_file = branch_path / ".seedgo" / "ruff_bypass.json"
diff --git a/src/aipass/seedgo/apps/handlers/aipass_standards/shebang_check.py b/src/aipass/seedgo/apps/handlers/aipass_standards/shebang_check.py
index 56e6688b..d50d0b70 100644
--- a/src/aipass/seedgo/apps/handlers/aipass_standards/shebang_check.py
+++ b/src/aipass/seedgo/apps/handlers/aipass_standards/shebang_check.py
@@ -19,28 +19,12 @@ from pathlib import Path
 from typing import Dict
 from aipass.prax import logger
 from aipass.seedgo.apps.handlers.json import json_handler
+from aipass.seedgo.apps.handlers.bypass.utils import is_bypassed
 
 # Audit scope: scan every .py file, not just entry point
 AUDIT_SCOPE = "all_files"
 
 
-def is_bypassed(file_path: str, standard: str, line: int | None = None, bypass_rules: list | None = None) -> bool:
-    """Check if a violation should be bypassed."""
-    if not bypass_rules:
-        return False
-    for rule in bypass_rules:
-        if rule.get("standard") and rule.get("standard") != standard:
-            continue
-        rule_file = rule.get("file", "")
-        if rule_file and rule_file not in file_path:
-            continue
-        rule_lines = rule.get("lines", [])
-        if rule_lines and line is not None and line not in rule_lines:
-            continue
-        return True
-    return False
-
-
 def check_module(module_path: str, bypass_rules: list | None = None) -> Dict:
     """
     Check if a Python file contains a shebang line.
diff --git a/src/aipass/seedgo/apps/handlers/aipass_standards/silent_catch_check.py b/src/aipass/seedgo/apps/handlers/aipass_standards/silent_catch_check.py
index 92230cdf..62f055e2 100644
--- a/src/aipass/seedgo/apps/handlers/aipass_standards/silent_catch_check.py
+++ b/src/aipass/seedgo/apps/handlers/aipass_standards/silent_catch_check.py
@@ -26,6 +26,7 @@ from typing import Dict
 
 from aipass.prax import logger
 from aipass.seedgo.apps.handlers.json import json_handler
+from aipass.seedgo.apps.handlers.bypass.utils import is_bypassed
 
 # Audit scope: scan every .py file, not just entry point
 AUDIT_SCOPE = "all_files"
@@ -34,23 +35,6 @@ AUDIT_SCOPE = "all_files"
 _LOGGING_ATTRS = frozenset({"error", "warning", "warn", "info", "debug", "exception", "critical"})
 
 
-def is_bypassed(file_path: str, standard: str, line: int | None = None, bypass_rules: list | None = None) -> bool:
-    """Check if a violation should be bypassed."""
-    if not bypass_rules:
-        return False
-    for rule in bypass_rules:
-        if rule.get("standard") and rule.get("standard") != standard:
-            continue
-        rule_file = rule.get("file", "")
-        if rule_file and rule_file not in file_path:
-            continue
-        rule_lines = rule.get("lines", [])
-        if rule_lines and line is not None and line not in rule_lines:
-            continue
-        return True
-    return False
-
-
 # -- AST helpers (extracted from devpulse silent_catch_scanner_v2) ---------
 
 
diff --git a/src/aipass/seedgo/apps/handlers/aipass_standards/stderr_routing_check.py b/src/aipass/seedgo/apps/handlers/aipass_standards/stderr_routing_check.py
index 96950529..fa733b90 100644
--- a/src/aipass/seedgo/apps/handlers/aipass_standards/stderr_routing_check.py
+++ b/src/aipass/seedgo/apps/handlers/aipass_standards/stderr_routing_check.py
@@ -27,29 +27,13 @@ import re
 from pathlib import Path
 from typing import Dict, List
 from aipass.prax import logger
+from aipass.seedgo.apps.handlers.bypass.utils import is_bypassed
 from aipass.seedgo.apps.handlers.json import json_handler
 
 
 AUDIT_SCOPE = "all_files"
 
 
-def is_bypassed(file_path: str, standard: str, line: int | None = None, bypass_rules: list | None = None) -> bool:
-    """Check if a violation should be bypassed."""
-    if not bypass_rules:
-        return False
-    for rule in bypass_rules:
-        if rule.get("standard") and rule.get("standard") != standard:
-            continue
-        rule_file = rule.get("file", "")
-        if rule_file and rule_file not in file_path:
-            continue
-        rule_lines = rule.get("lines", [])
-        if rule_lines and line is not None and line not in rule_lines:
-            continue
-        return True
-    return False
-
-
 def check_module(module_path: str, bypass_rules: list | None = None) -> Dict:
     """
     Check if module routes error/warning output to stderr via CLI display functions.
diff --git a/src/aipass/seedgo/apps/handlers/aipass_standards/test_quality_check.py b/src/aipass/seedgo/apps/handlers/aipass_standards/test_quality_check.py
index 6921ee7a..2771ba42 100644
--- a/src/aipass/seedgo/apps/handlers/aipass_standards/test_quality_check.py
+++ b/src/aipass/seedgo/apps/handlers/aipass_standards/test_quality_check.py
@@ -28,6 +28,7 @@ from pathlib import Path
 
 from aipass.prax import logger
 from aipass.seedgo.apps.handlers.json import json_handler
+from aipass.seedgo.apps.handlers.bypass.utils import is_bypassed
 
 AUDIT_SCOPE = "branch_level"
 
@@ -175,28 +176,6 @@ TOTAL_ITEMS = _PATTERN_ITEMS + _MODULE_COVERAGE_ITEMS
 # =============================================
 
 
-def is_bypassed(
-    file_path: str,
-    standard: str,
-    line: int | None = None,
-    bypass_rules: list | None = None,
-) -> bool:
-    """Check if a violation should be bypassed."""
-    if not bypass_rules:
-        return False
-    for rule in bypass_rules:
-        if rule.get("standard") and rule.get("standard") != standard:
-            continue
-        rule_file = rule.get("file", "")
-        if rule_file and rule_file not in file_path:
-            continue
-        rule_lines = rule.get("lines", [])
-        if rule_lines and line is not None and line not in rule_lines:
-            continue
-        return True
-    return False
-
-
 # =============================================
 # FILE HELPERS
 # =============================================
diff --git a/src/aipass/seedgo/apps/handlers/aipass_standards/todo_check.py b/src/aipass/seedgo/apps/handlers/aipass_standards/todo_check.py
index 433af707..ce9428cb 100644
--- a/src/aipass/seedgo/apps/handlers/aipass_standards/todo_check.py
+++ b/src/aipass/seedgo/apps/handlers/aipass_standards/todo_check.py
@@ -21,6 +21,7 @@ from typing import Dict
 
 from aipass.prax import logger
 from aipass.seedgo.apps.handlers.json import json_handler
+from aipass.seedgo.apps.handlers.bypass.utils import is_bypassed
 
 AUDIT_SCOPE = "all_files"
 
@@ -35,26 +36,6 @@ _TAG_RE = re.compile(
 )
 
 
-def is_bypassed(file_path: str, standard: str, line: int | None = None, bypass_rules: list | None = None) -> bool:
-    """Check if a violation should be bypassed."""
-    if not bypass_rules:
-        return False
-    for rule in bypass_rules:
-        # Must match standard
-        if rule.get("standard") and rule.get("standard") != standard:
-            continue
-        # Must match file (check if rule file path is in the full path)
-        rule_file = rule.get("file", "")
-        if rule_file and rule_file not in file_path:
-            continue
-        # Check line-specific bypass
-        rule_lines = rule.get("lines", [])
-        if rule_lines and line is not None and line not in rule_lines:
-            continue
-        return True
-    return False
-
-
 def check_module(module_path: str, bypass_rules: list | None = None) -> Dict:
     """
     Check a Python file for TODO/FIXME/HACK/XXX comments.
diff --git a/src/aipass/seedgo/apps/handlers/aipass_standards/unused_function_check.py b/src/aipass/seedgo/apps/handlers/aipass_standards/unused_function_check.py
index 31a1ab9f..6e13b8a1 100644
--- a/src/aipass/seedgo/apps/handlers/aipass_standards/unused_function_check.py
+++ b/src/aipass/seedgo/apps/handlers/aipass_standards/unused_function_check.py
@@ -31,6 +31,7 @@ from pathlib import Path
 
 from aipass.prax import logger
 from aipass.seedgo.apps.handlers.json import json_handler
+from aipass.seedgo.apps.handlers.bypass.utils import is_bypassed
 
 AUDIT_SCOPE = "branch_level"
 
@@ -78,23 +79,6 @@ _MAIN_BLOCK_RE = re.compile(
 # -- Bypass helper ------------------------------------------------------------
 
 
-def is_bypassed(file_path: str, standard: str, line: int | None = None, bypass_rules: list | None = None) -> bool:
-    """Check if a violation should be bypassed."""
-    if not bypass_rules:
-        return False
-    for rule in bypass_rules:
-        if rule.get("standard") and rule.get("standard") != standard:
-            continue
-        rule_file = rule.get("file", "")
-        if rule_file and rule_file not in file_path:
-            continue
-        rule_lines = rule.get("lines", [])
-        if rule_lines and line is not None and line not in rule_lines:
-            continue
-        return True
-    return False
-
-
 # -- File collection ----------------------------------------------------------
 
 
diff --git a/src/aipass/seedgo/apps/handlers/bypass/utils.py b/src/aipass/seedgo/apps/handlers/bypass/utils.py
new file mode 100644
index 00000000..d053fd22
--- /dev/null
+++ b/src/aipass/seedgo/apps/handlers/bypass/utils.py
@@ -0,0 +1,52 @@
+# =================== AIPass ====================
+# Name: utils.py
+# Description: Shared bypass checking utility for standards checkers
+# Version: 1.0.0
+# Created: 2026-04-27
+# Modified: 2026-04-27
+# =============================================
+
+"""Shared bypass checking utility for standards checkers."""
+
+from aipass.seedgo.apps.handlers.json import json_handler
+
+
+def is_bypassed(
+    file_path: str,
+    standard: str,
+    line: int | None = None,
+    bypass_rules: list | None = None,
+) -> bool:
+    """Check if a violation should be bypassed.
+
+    Args:
+        file_path: Path to the file being checked
+        standard: Standard name (e.g., 'cli', 'imports')
+        line: Optional specific line number of the violation
+        bypass_rules: List of bypass rules from .seedgo/bypass.json
+
+    Returns:
+        True if this violation should be bypassed
+    """
+    if not bypass_rules:
+        return False
+    for rule in bypass_rules:
+        if rule.get("standard") and rule.get("standard") != standard:
+            continue
+        rule_file = rule.get("file", "")
+        if rule_file and rule_file not in file_path:
+            continue
+        rule_lines = rule.get("lines", [])
+        if rule_lines and line is not None and line not in rule_lines:
+            continue
+        json_handler.log_operation(
+            "bypass_matched",
+            {
+                "file": file_path,
+                "standard": standard,
+                "line": line,
+                "rule_file": rule_file,
+            },
+        )
+        return True
+    return False