diff --git a/app/modules/dev_tools/definition.py b/app/modules/dev_tools/definition.py
index bb91f5f1..df0ca048 100644
--- a/app/modules/dev_tools/definition.py
+++ b/app/modules/dev_tools/definition.py
@@ -82,7 +82,7 @@ dev_tools_module = ModuleDefinition(
                     ),
                     MenuItemDefinition(
                         id="platform-debug",
-                        label_key="dev_tools.menu.platform_debug",
+                        label_key="dev_tools.menu.diagnostics",
                         icon="search",
                         route="/admin/platform-debug",
                         order=40,
diff --git a/app/modules/dev_tools/locales/de.json b/app/modules/dev_tools/locales/de.json
index 467c9a6f..23c92c7e 100644
--- a/app/modules/dev_tools/locales/de.json
+++ b/app/modules/dev_tools/locales/de.json
@@ -14,9 +14,20 @@
         "components": "Komponenten",
         "icons": "Icons",
         "sql_query": "SQL Abfrage",
-        "platform_debug": "Plattform Debug",
+        "diagnostics": "Diagnostik",
         "translation_editor": "Übersetzungseditor"
     },
+    "diagnostics": {
+        "title": "Diagnostik",
+        "platform_trace": "Plattform-Trace",
+        "permissions_audit": "Berechtigungsprüfung",
+        "run_audit": "Prüfung starten",
+        "status_ok": "OK",
+        "status_warning": "Warnung",
+        "status_error": "Fehler",
+        "total_routes": "Routen gesamt",
+        "no_routes_match": "Keine Routen entsprechen Ihren Filtern"
+    },
     "translation_editor": {
         "title": "Übersetzungseditor",
         "all_modules": "Alle Module",
diff --git a/app/modules/dev_tools/locales/en.json b/app/modules/dev_tools/locales/en.json
index 7facccfd..021b3ea6 100644
--- a/app/modules/dev_tools/locales/en.json
+++ b/app/modules/dev_tools/locales/en.json
@@ -14,9 +14,20 @@
         "components": "Components",
         "icons": "Icons",
         "sql_query": "SQL Query",
-        "platform_debug": "Platform Debug",
+        "diagnostics": "Diagnostics",
         "translation_editor": "Translation Editor"
     },
+    "diagnostics": {
+        "title": "Diagnostics",
+        "platform_trace": "Platform Trace",
+        "permissions_audit": "Permissions Audit",
+        "run_audit": "Run Audit",
+        "status_ok": "OK",
+        "status_warning": "Warning",
+        "status_error": "Error",
+        "total_routes": "Total Routes",
+        "no_routes_match": "No routes match your filters"
+    },
     "translation_editor": {
         "title": "Translation Editor",
         "all_modules": "All Modules",
diff --git a/app/modules/dev_tools/locales/fr.json b/app/modules/dev_tools/locales/fr.json
index cbf59b6d..a21f0814 100644
--- a/app/modules/dev_tools/locales/fr.json
+++ b/app/modules/dev_tools/locales/fr.json
@@ -14,9 +14,20 @@
         "components": "Composants",
         "icons": "Icônes",
         "sql_query": "Requête SQL",
-        "platform_debug": "Debug Plateforme",
+        "diagnostics": "Diagnostics",
         "translation_editor": "Éditeur de traductions"
     },
+    "diagnostics": {
+        "title": "Diagnostics",
+        "platform_trace": "Trace Plateforme",
+        "permissions_audit": "Audit des Permissions",
+        "run_audit": "Lancer l'audit",
+        "status_ok": "OK",
+        "status_warning": "Avertissement",
+        "status_error": "Erreur",
+        "total_routes": "Routes totales",
+        "no_routes_match": "Aucune route ne correspond à vos filtres"
+    },
     "translation_editor": {
         "title": "Éditeur de traductions",
         "all_modules": "Tous les modules",
diff --git a/app/modules/dev_tools/locales/lb.json b/app/modules/dev_tools/locales/lb.json
index 54961774..8def2b3a 100644
--- a/app/modules/dev_tools/locales/lb.json
+++ b/app/modules/dev_tools/locales/lb.json
@@ -14,9 +14,20 @@
         "components": "Komponenten",
         "icons": "Icons",
         "sql_query": "SQL Ufro",
-        "platform_debug": "Plattform Debug",
+        "diagnostics": "Diagnostik",
         "translation_editor": "Iwwersetzungseditor"
     },
+    "diagnostics": {
+        "title": "Diagnostik",
+        "platform_trace": "Plattform-Trace",
+        "permissions_audit": "Berechtigungsprüfung",
+        "run_audit": "Prüfung starten",
+        "status_ok": "OK",
+        "status_warning": "Warnung",
+        "status_error": "Feeler",
+        "total_routes": "Routen gesamt",
+        "no_routes_match": "Keng Routen entspriechen Ären Filteren"
+    },
     "translation_editor": {
         "title": "Iwwersetzungseditor",
         "all_modules": "All Moduler",
diff --git a/app/modules/dev_tools/routes/api/admin.py b/app/modules/dev_tools/routes/api/admin.py
index 32504c89..10659d41 100644
--- a/app/modules/dev_tools/routes/api/admin.py
+++ b/app/modules/dev_tools/routes/api/admin.py
@@ -7,6 +7,9 @@ Aggregates all admin API routers for the dev-tools module.
 
 from fastapi import APIRouter
 
+from app.modules.dev_tools.routes.api.admin_diagnostics import (
+    router as diagnostics_router,
+)
 from app.modules.dev_tools.routes.api.admin_platform_debug import (
     router as platform_debug_router,
 )
@@ -19,3 +22,4 @@ router = APIRouter()
 router.include_router(sql_query_router, tags=["sql-query"])
 router.include_router(platform_debug_router, tags=["platform-debug"])
 router.include_router(translations_router, tags=["translations"])
+router.include_router(diagnostics_router, tags=["diagnostics"])
diff --git a/app/modules/dev_tools/routes/api/admin_diagnostics.py b/app/modules/dev_tools/routes/api/admin_diagnostics.py
new file mode 100644
index 00000000..87f3149a
--- /dev/null
+++ b/app/modules/dev_tools/routes/api/admin_diagnostics.py
@@ -0,0 +1,289 @@
+# app/modules/dev_tools/routes/api/admin_diagnostics.py
+"""
+Diagnostics API endpoints.
+
+Provides route introspection and permissions audit capabilities
+for the Diagnostics Hub admin page.
+"""
+
+import inspect
+import logging
+
+from fastapi import APIRouter, Depends, Request
+from fastapi.routing import APIRoute
+from pydantic import BaseModel
+
+from app.api.deps import get_current_super_admin_api
+from app.modules.tenancy.schemas.auth import UserContext
+
+router = APIRouter(prefix="/diagnostics")
+logger = logging.getLogger(__name__)
+
+
+# ── Response schemas ──
+
+
+class RouteAuditEntry(BaseModel):
+    path: str
+    methods: list[str]
+    module: str | None
+    frontend: str | None
+    endpoint_name: str
+    auth_dependency: str | None
+    auth_detail: str | None
+    status: str  # "ok", "warning", "error"
+    issue: str | None
+
+
+class FrontendSummary(BaseModel):
+    total: int = 0
+    ok: int = 0
+    warnings: int = 0
+    errors: int = 0
+
+
+class AuditSummary(BaseModel):
+    total: int = 0
+    ok: int = 0
+    warnings: int = 0
+    errors: int = 0
+    by_frontend: dict[str, FrontendSummary] = {}
+
+
+class PermissionsAuditResponse(BaseModel):
+    routes: list[RouteAuditEntry]
+    summary: AuditSummary
+
+
+# ── Auth dependency names for classification ──
+
+_OK_DEPENDENCIES = {
+    "require_menu_access",
+    "require_store_page_permission",
+    "get_current_super_admin",
+    "get_current_super_admin_api",
+}
+
+_ADMIN_AUTH_DEPENDENCIES = {
+    "get_current_admin_from_cookie_or_header",
+}
+
+_STORE_AUTH_DEPENDENCIES = {
+    "get_current_store_from_cookie_or_header",
+}
+
+_MERCHANT_AUTH_DEPENDENCIES = {
+    "get_current_merchant_from_cookie_or_header",
+}
+
+
+def _classify_frontend(path: str) -> str | None:
+    """Classify frontend type from route path prefix."""
+    if path.startswith("/admin/"):
+        return "admin"
+    if path.startswith(("/store/", "/store/{")):
+        return "store"
+    if path.startswith(("/merchants/", "/merchants/{")):
+        return "merchant"
+    if path.startswith(("/storefront/", "/storefront/{")):
+        return "storefront"
+    return None
+
+
+def _infer_module(path: str) -> str | None:
+    """Infer module name from path segments."""
+    # Strip frontend prefix to get module segment
+    # e.g. /admin/loyalty/programs → loyalty
+    # e.g. /store/{store_code}/loyalty/terminal → loyalty
+    parts = path.strip("/").split("/")
+    if len(parts) < 2:
+        return None
+
+    # Skip the frontend prefix and optional path params
+    start = 1
+    # For store/merchant with {store_code}/{merchant_code} param
+    if len(parts) > 2 and parts[1].startswith("{"):
+        start = 2
+
+    if start < len(parts):
+        candidate = parts[start]
+        # Skip common non-module segments
+        if candidate not in {"dashboard", "settings", "profile", "login", "logout", "api"}:
+            return candidate
+
+    return None
+
+
+def _extract_auth_dependencies(endpoint) -> list[dict]:
+    """
+    Inspect endpoint function signature to find Depends() parameters
+    and extract auth-related dependency information.
+    """
+    results = []
+    try:
+        sig = inspect.signature(endpoint)
+    except (ValueError, TypeError):
+        return results
+
+    for _param_name, param in sig.parameters.items():
+        default = param.default
+        if default is inspect.Parameter.empty:
+            continue
+
+        # Check for Depends() instances
+        dep_callable = None
+        if hasattr(default, "dependency"):
+            dep_callable = default.dependency
+        elif callable(default) and not isinstance(default, type):
+            continue  # Skip plain callables that aren't Depends
+
+        if dep_callable is None:
+            continue
+
+        dep_name = None
+        dep_detail = None
+
+        # Direct function reference
+        if callable(dep_callable) and hasattr(dep_callable, "__name__"):
+            dep_name = dep_callable.__name__
+
+        # functools.partial (e.g. require_menu_access("id", FrontendType.ADMIN))
+        if hasattr(dep_callable, "func"):
+            dep_name = getattr(dep_callable.func, "__name__", str(dep_callable.func))
+            # Extract args for detail
+            if dep_callable.args:
+                dep_detail = str(dep_callable.args[0])
+
+        # Closure / nested function from factory
+        if dep_name is None and callable(dep_callable):
+            # Try qualname for closures from factories
+            qualname = getattr(dep_callable, "__qualname__", "")
+            if "." in qualname:
+                # e.g. "require_menu_access.<locals>.dependency"
+                factory_name = qualname.split(".")[0]
+                dep_name = factory_name
+                # Try to extract closure variables for detail
+                if hasattr(dep_callable, "__closure__") and dep_callable.__closure__:
+                    for cell in dep_callable.__closure__:
+                        try:
+                            val = cell.cell_contents
+                            if isinstance(val, str) and val not in ("admin", "store", "merchant"):
+                                dep_detail = val
+                                break
+                        except ValueError:
+                            continue
+
+        if dep_name:
+            results.append({"name": dep_name, "detail": dep_detail})
+
+    return results
+
+
+def _classify_route(path: str, frontend: str | None, auth_deps: list[dict]) -> tuple[str, str | None, str | None, str | None]:
+    """
+    Classify a route's auth status.
+
+    Returns: (status, auth_dependency, auth_detail, issue)
+    """
+    if not auth_deps:
+        return "error", None, None, "No authentication dependency found"
+
+    # Check each dependency against classification rules
+    for dep in auth_deps:
+        name = dep["name"]
+        detail = dep["detail"]
+
+        if name in _OK_DEPENDENCIES:
+            return "ok", name, detail, None
+
+        if name in _ADMIN_AUTH_DEPENDENCIES and frontend == "admin":
+            return "ok", name, detail, None
+
+    # If we get here, check for auth-only deps (warnings)
+    for dep in auth_deps:
+        name = dep["name"]
+        detail = dep["detail"]
+
+        if name in _STORE_AUTH_DEPENDENCIES and frontend == "store":
+            return "warning", name, detail, "Authentication only \u2014 no menu access or permission check"
+
+        if name in _MERCHANT_AUTH_DEPENDENCIES and frontend == "merchant":
+            return "warning", name, detail, "Authentication only \u2014 no menu access check"
+
+        if name in _ADMIN_AUTH_DEPENDENCIES:
+            return "warning", name, detail, "Admin auth on non-admin route"
+
+    # Has some dependency but not recognized
+    first = auth_deps[0]
+    return "warning", first["name"], first["detail"], f"Unrecognized auth dependency: {first['name']}"
+
+
+@router.get("/permissions-audit", response_model=PermissionsAuditResponse)
+def permissions_audit(
+    request: Request,
+    current_user: UserContext = Depends(get_current_super_admin_api),
+):
+    """
+    Introspect all registered page routes and audit their auth/permission enforcement.
+
+    Examines each route's endpoint function signature to find Depends() parameters
+    and classify the level of authentication and authorization applied.
+    """
+    audit_routes: list[RouteAuditEntry] = []
+
+    for route in request.app.routes:
+        if not isinstance(route, APIRoute):
+            continue
+
+        # Filter to page routes only (include_in_schema=False signals HTML page routes)
+        if route.include_in_schema:
+            continue
+
+        path = route.path
+        methods = sorted(route.methods - {"HEAD", "OPTIONS"}) if route.methods else []
+        frontend = _classify_frontend(path)
+        module = _infer_module(path)
+        endpoint_name = getattr(route.endpoint, "__name__", str(route.endpoint))
+
+        # Extract and classify auth dependencies
+        auth_deps = _extract_auth_dependencies(route.endpoint)
+        status, auth_dep, auth_detail, issue = _classify_route(path, frontend, auth_deps)
+
+        audit_routes.append(RouteAuditEntry(
+            path=path,
+            methods=methods,
+            module=module,
+            frontend=frontend,
+            endpoint_name=endpoint_name,
+            auth_dependency=auth_dep,
+            auth_detail=auth_detail,
+            status=status,
+            issue=issue,
+        ))
+
+    # Sort by frontend, then path
+    audit_routes.sort(key=lambda r: (r.frontend or "", r.path))
+
+    # Build summary
+    summary = AuditSummary(
+        total=len(audit_routes),
+        ok=sum(1 for r in audit_routes if r.status == "ok"),
+        warnings=sum(1 for r in audit_routes if r.status == "warning"),
+        errors=sum(1 for r in audit_routes if r.status == "error"),
+        by_frontend={},
+    )
+
+    for r in audit_routes:
+        fe = r.frontend or "other"
+        if fe not in summary.by_frontend:
+            summary.by_frontend[fe] = FrontendSummary()
+        fe_summary = summary.by_frontend[fe]
+        fe_summary.total += 1
+        if r.status == "ok":
+            fe_summary.ok += 1
+        elif r.status == "warning":
+            fe_summary.warnings += 1
+        elif r.status == "error":
+            fe_summary.errors += 1
+
+    return PermissionsAuditResponse(routes=audit_routes, summary=summary)
diff --git a/app/modules/dev_tools/routes/pages/admin.py b/app/modules/dev_tools/routes/pages/admin.py
index f2df67b2..dd1a2735 100644
--- a/app/modules/dev_tools/routes/pages/admin.py
+++ b/app/modules/dev_tools/routes/pages/admin.py
@@ -140,8 +140,8 @@ async def admin_platform_debug_page(
     db: Session = Depends(get_db),
 ):
     """
-    Render platform resolution debug page.
-    Traces middleware pipeline for all URL patterns.
+    Render diagnostics hub page.
+    Provides platform trace, permissions audit, and other diagnostic tools.
     """
     return templates.TemplateResponse(
         "dev_tools/admin/platform-debug.html",
diff --git a/app/modules/dev_tools/templates/dev_tools/admin/platform-debug.html b/app/modules/dev_tools/templates/dev_tools/admin/platform-debug.html
index 7e1c6f8e..2093fa13 100644
--- a/app/modules/dev_tools/templates/dev_tools/admin/platform-debug.html
+++ b/app/modules/dev_tools/templates/dev_tools/admin/platform-debug.html
@@ -1,137 +1,341 @@
 {# app/modules/dev_tools/templates/dev_tools/admin/platform-debug.html #}
 {% extends "admin/base.html" %}
+{% from 'shared/macros/headers.html' import page_header %}
+{% from 'shared/macros/tables.html' import table_wrapper, table_header, table_empty_state %}
 
-{% block title %}Platform Resolution Debug{% endblock %}
+{% block title %}Diagnostics{% endblock %}
 
 {% block alpine_data %}platformDebug(){% endblock %}
 
 {% block content %}
-<div class="mb-6">
-    <h1 class="text-2xl font-bold text-gray-900 dark:text-white">Platform Resolution Trace</h1>
-    <p class="mt-1 text-sm text-gray-500 dark:text-gray-400">
-        Simulates the middleware pipeline for each URL pattern to trace how platform &amp; store context are resolved.
-    </p>
-</div>
+{{ page_header('Diagnostics', back_url='/admin/dashboard', back_label='Back to Dashboard') }}
 
-<!-- Controls -->
-<div class="mb-6 p-4 bg-white dark:bg-gray-800 rounded-lg shadow-xs">
-    <div class="flex items-center gap-4 flex-wrap">
-        <button @click="runAllTests()" :disabled="running"
-            class="px-4 py-2 bg-indigo-600 text-white rounded-lg hover:bg-indigo-700 disabled:opacity-50">
-            <span x-show="!running">Run All Tests</span>
-            <span x-show="running">Running...</span>
-        </button>
-        <div class="flex gap-2">
-            <button @click="filterGroup = 'all'" :class="filterGroup === 'all' ? 'bg-gray-200 dark:bg-gray-600' : ''"
-                class="px-3 py-1 text-sm rounded-lg hover:bg-gray-100 dark:hover:bg-gray-700 dark:text-gray-300">All</button>
-            <button @click="filterGroup = 'dev'" :class="filterGroup === 'dev' ? 'bg-gray-200 dark:bg-gray-600' : ''"
-                class="px-3 py-1 text-sm rounded-lg hover:bg-gray-100 dark:hover:bg-gray-700 dark:text-gray-300">Dev Path-Based</button>
-            <button @click="filterGroup = 'prod-domain'" :class="filterGroup === 'prod-domain' ? 'bg-gray-200 dark:bg-gray-600' : ''"
-                class="px-3 py-1 text-sm rounded-lg hover:bg-gray-100 dark:hover:bg-gray-700 dark:text-gray-300">Prod Domain</button>
-            <button @click="filterGroup = 'prod-subdomain'" :class="filterGroup === 'prod-subdomain' ? 'bg-gray-200 dark:bg-gray-600' : ''"
-                class="px-3 py-1 text-sm rounded-lg hover:bg-gray-100 dark:hover:bg-gray-700 dark:text-gray-300">Prod Subdomain</button>
-            <button @click="filterGroup = 'prod-custom'" :class="filterGroup === 'prod-custom' ? 'bg-gray-200 dark:bg-gray-600' : ''"
-                class="px-3 py-1 text-sm rounded-lg hover:bg-gray-100 dark:hover:bg-gray-700 dark:text-gray-300">Prod Custom Domain</button>
+<div class="flex gap-6">
+    <!-- ═══════════════════════════════════════════════════════════════════ -->
+    <!-- Left sidebar — Diagnostic Tools explorer                          -->
+    <!-- ═══════════════════════════════════════════════════════════════════ -->
+    <div class="w-72 flex-shrink-0">
+        <div class="bg-white dark:bg-gray-800 rounded-lg shadow p-4">
+            <div class="text-sm font-semibold text-gray-700 dark:text-gray-300 uppercase tracking-wider mb-3 flex items-center gap-1.5">
+                <span x-html="$icon('cog', 'w-4 h-4')"></span>
+                Diagnostic Tools
+            </div>
+            <template x-for="group in toolGroups" :key="group.category">
+                <div class="mb-1">
+                    <button @click="toggleCategory(group.category)"
+                            class="flex items-center justify-between w-full text-xs font-semibold text-gray-400 dark:text-gray-500 uppercase px-2 py-1 rounded hover:text-gray-600 dark:hover:text-gray-300 transition-colors">
+                        <span x-text="group.category"></span>
+                        <span class="text-[10px] font-mono leading-none" x-text="isCategoryExpanded(group.category) ? '−' : '+'"></span>
+                    </button>
+                    <ul x-show="isCategoryExpanded(group.category)" x-collapse class="space-y-0.5 mt-0.5">
+                        <template x-for="tool in group.items" :key="tool.id">
+                            <li @click="selectTool(tool.id)"
+                                class="flex items-center gap-1.5 rounded-md px-2 py-1.5 text-sm cursor-pointer transition-colors"
+                                :class="activeTool === tool.id
+                                    ? 'bg-indigo-50 dark:bg-indigo-900/30 text-indigo-700 dark:text-indigo-300'
+                                    : 'text-gray-600 dark:text-gray-400 hover:bg-gray-100 dark:hover:bg-gray-700 hover:text-gray-900 dark:hover:text-gray-200'">
+                                <span x-html="$icon(tool.icon, 'w-3.5 h-3.5 flex-shrink-0')"></span>
+                                <span class="truncate" x-text="tool.label"></span>
+                            </li>
+                        </template>
+                    </ul>
+                </div>
+            </template>
         </div>
     </div>
-</div>
 
-<!-- Custom test -->
-<div class="mb-6 p-4 bg-white dark:bg-gray-800 rounded-lg shadow-xs">
-    <h3 class="text-sm font-semibold text-gray-700 dark:text-gray-300 mb-3">Custom Test</h3>
-    <div class="flex gap-3 items-end flex-wrap">
-        <div>
-            <label class="block text-xs text-gray-500 dark:text-gray-400 mb-1">Host</label>
-            <input x-model="customHost" type="text" placeholder="localhost:8000"
-                class="px-3 py-2 border rounded-lg text-sm dark:bg-gray-700 dark:border-gray-600 dark:text-white w-56">
-        </div>
-        <div>
-            <label class="block text-xs text-gray-500 dark:text-gray-400 mb-1">Path</label>
-            <input x-model="customPath" type="text" placeholder="/platforms/loyalty/store/WIZATECH/login"
-                class="px-3 py-2 border rounded-lg text-sm dark:bg-gray-700 dark:border-gray-600 dark:text-white w-80">
-        </div>
-        <div>
-            <label class="block text-xs text-gray-500 dark:text-gray-400 mb-1">Body platform_code</label>
-            <input x-model="customPlatformCode" type="text" placeholder="(optional)"
-                class="px-3 py-2 border rounded-lg text-sm dark:bg-gray-700 dark:border-gray-600 dark:text-white w-40">
-        </div>
-        <button @click="runCustomTest()" class="px-4 py-2 bg-gray-600 text-white rounded-lg hover:bg-gray-700 text-sm">
-            Trace
-        </button>
-    </div>
-    <!-- Custom result -->
-    <template x-if="customResult">
-        <div class="mt-4">
-            <div x-html="renderTrace(customResult)"></div>
-        </div>
-    </template>
-</div>
+    <!-- ═══════════════════════════════════════════════════════════════════ -->
+    <!-- Main area — tool content panels                                   -->
+    <!-- ═══════════════════════════════════════════════════════════════════ -->
+    <div class="flex-1 min-w-0">
 
-<!-- Test Results -->
-<div class="space-y-4">
-    <template x-for="test in filteredTests" :key="test.id">
-        <div class="bg-white dark:bg-gray-800 rounded-lg shadow-xs overflow-hidden">
-            <!-- Header -->
-            <div class="px-4 py-3 border-b border-gray-200 dark:border-gray-700 cursor-pointer flex items-center justify-between"
-                 @click="test.expanded = !test.expanded">
-                <div class="flex items-center gap-3">
-                    <!-- Status indicator -->
-                    <div class="w-3 h-3 rounded-full"
-                         :class="{
-                             'bg-gray-300 dark:bg-gray-600': !test.result,
-                             'bg-green-500': test.result && test.pass,
-                             'bg-red-500': test.result && !test.pass,
-                             'animate-pulse bg-yellow-400': test.running
-                         }"></div>
-                    <span class="text-xs px-2 py-0.5 rounded-full font-medium"
-                          :class="{
-                              'bg-blue-100 text-blue-800 dark:bg-blue-900 dark:text-blue-300': test.group === 'dev',
-                              'bg-purple-100 text-purple-800 dark:bg-purple-900 dark:text-purple-300': test.group === 'prod-domain',
-                              'bg-orange-100 text-orange-800 dark:bg-orange-900 dark:text-orange-300': test.group === 'prod-subdomain',
-                              'bg-pink-100 text-pink-800 dark:bg-pink-900 dark:text-pink-300': test.group === 'prod-custom'
-                          }" x-text="test.groupLabel"></span>
-                    <div>
-                        <span class="font-mono text-sm text-gray-900 dark:text-white" x-text="test.label"></span>
-                        <span class="text-xs text-gray-500 dark:text-gray-400 ml-2" x-text="test.description"></span>
+        <!-- ─────────────────────────────────────────────────────────── -->
+        <!-- Tool: Platform Trace (existing functionality, verbatim)    -->
+        <!-- ─────────────────────────────────────────────────────────── -->
+        <div x-show="activeTool === 'platform-trace'" x-cloak>
+            <div class="mb-6">
+                <h2 class="text-xl font-bold text-gray-900 dark:text-white">Platform Resolution Trace</h2>
+                <p class="mt-1 text-sm text-gray-500 dark:text-gray-400">
+                    Simulates the middleware pipeline for each URL pattern to trace how platform &amp; store context are resolved.
+                </p>
+            </div>
+
+            <!-- Controls -->
+            <div class="mb-6 p-4 bg-white dark:bg-gray-800 rounded-lg shadow-xs">
+                <div class="flex items-center gap-4 flex-wrap">
+                    <button @click="runAllTests()" :disabled="running"
+                        class="px-4 py-2 bg-indigo-600 text-white rounded-lg hover:bg-indigo-700 disabled:opacity-50">
+                        <span x-show="!running">Run All Tests</span>
+                        <span x-show="running">Running...</span>
+                    </button>
+                    <div class="flex gap-2">
+                        <button @click="filterGroup = 'all'" :class="filterGroup === 'all' ? 'bg-gray-200 dark:bg-gray-600' : ''"
+                            class="px-3 py-1 text-sm rounded-lg hover:bg-gray-100 dark:hover:bg-gray-700 dark:text-gray-300">All</button>
+                        <button @click="filterGroup = 'dev'" :class="filterGroup === 'dev' ? 'bg-gray-200 dark:bg-gray-600' : ''"
+                            class="px-3 py-1 text-sm rounded-lg hover:bg-gray-100 dark:hover:bg-gray-700 dark:text-gray-300">Dev Path-Based</button>
+                        <button @click="filterGroup = 'prod-domain'" :class="filterGroup === 'prod-domain' ? 'bg-gray-200 dark:bg-gray-600' : ''"
+                            class="px-3 py-1 text-sm rounded-lg hover:bg-gray-100 dark:hover:bg-gray-700 dark:text-gray-300">Prod Domain</button>
+                        <button @click="filterGroup = 'prod-subdomain'" :class="filterGroup === 'prod-subdomain' ? 'bg-gray-200 dark:bg-gray-600' : ''"
+                            class="px-3 py-1 text-sm rounded-lg hover:bg-gray-100 dark:hover:bg-gray-700 dark:text-gray-300">Prod Subdomain</button>
+                        <button @click="filterGroup = 'prod-custom'" :class="filterGroup === 'prod-custom' ? 'bg-gray-200 dark:bg-gray-600' : ''"
+                            class="px-3 py-1 text-sm rounded-lg hover:bg-gray-100 dark:hover:bg-gray-700 dark:text-gray-300">Prod Custom Domain</button>
                     </div>
                 </div>
-                <div class="flex items-center gap-3">
-                    <template x-if="test.result">
-                        <span class="text-xs font-mono px-2 py-1 rounded"
-                              :class="test.pass ? 'bg-green-100 text-green-800 dark:bg-green-900 dark:text-green-300' : 'bg-red-100 text-red-800 dark:bg-red-900 dark:text-red-300'"
-                              x-text="'platform=' + (test.result.login_platform_code || 'null')"></span>
-                    </template>
-                    <template x-if="test.result">
-                        <button @click.stop="copyTrace(test)" title="Copy full trace"
-                            class="px-2 py-1 text-xs bg-gray-100 dark:bg-gray-700 text-gray-600 dark:text-gray-300 rounded hover:bg-gray-200 dark:hover:bg-gray-600">
-                            Copy
-                        </button>
-                    </template>
-                    <svg class="w-4 h-4 text-gray-400 transition-transform" :class="test.expanded ? 'rotate-180' : ''"
-                         fill="none" stroke="currentColor" viewBox="0 0 24 24">
-                        <path stroke-linecap="round" stroke-linejoin="round" stroke-width="2" d="M19 9l-7 7-7-7"/>
-                    </svg>
-                </div>
             </div>
-            <!-- Detail -->
-            <div x-show="test.expanded" x-cloak class="px-4 py-3">
-                <template x-if="test.result">
-                    <div x-html="renderTrace(test.result)"></div>
+
+            <!-- Custom test -->
+            <div class="mb-6 p-4 bg-white dark:bg-gray-800 rounded-lg shadow-xs">
+                <h3 class="text-sm font-semibold text-gray-700 dark:text-gray-300 mb-3">Custom Test</h3>
+                <div class="flex gap-3 items-end flex-wrap">
+                    <div>
+                        <label class="block text-xs text-gray-500 dark:text-gray-400 mb-1">Host</label>
+                        <input x-model="customHost" type="text" placeholder="localhost:8000"
+                            class="px-3 py-2 border rounded-lg text-sm dark:bg-gray-700 dark:border-gray-600 dark:text-white w-56">
+                    </div>
+                    <div>
+                        <label class="block text-xs text-gray-500 dark:text-gray-400 mb-1">Path</label>
+                        <input x-model="customPath" type="text" placeholder="/platforms/loyalty/store/WIZATECH/login"
+                            class="px-3 py-2 border rounded-lg text-sm dark:bg-gray-700 dark:border-gray-600 dark:text-white w-80">
+                    </div>
+                    <div>
+                        <label class="block text-xs text-gray-500 dark:text-gray-400 mb-1">Body platform_code</label>
+                        <input x-model="customPlatformCode" type="text" placeholder="(optional)"
+                            class="px-3 py-2 border rounded-lg text-sm dark:bg-gray-700 dark:border-gray-600 dark:text-white w-40">
+                    </div>
+                    <button @click="runCustomTest()" class="px-4 py-2 bg-gray-600 text-white rounded-lg hover:bg-gray-700 text-sm">
+                        Trace
+                    </button>
+                </div>
+                <!-- Custom result -->
+                <template x-if="customResult">
+                    <div class="mt-4">
+                        <div x-html="renderTrace(customResult)"></div>
+                    </div>
                 </template>
-                <template x-if="!test.result && !test.running">
-                    <p class="text-sm text-gray-500 dark:text-gray-400">Click "Run All Tests" to trace this case.</p>
-                </template>
-                <template x-if="test.running">
-                    <p class="text-sm text-yellow-600 dark:text-yellow-400">Running...</p>
+            </div>
+
+            <!-- Test Results -->
+            <div class="space-y-4">
+                <template x-for="test in filteredTests" :key="test.id">
+                    <div class="bg-white dark:bg-gray-800 rounded-lg shadow-xs overflow-hidden">
+                        <!-- Header -->
+                        <div class="px-4 py-3 border-b border-gray-200 dark:border-gray-700 cursor-pointer flex items-center justify-between"
+                             @click="test.expanded = !test.expanded">
+                            <div class="flex items-center gap-3">
+                                <!-- Status indicator -->
+                                <div class="w-3 h-3 rounded-full"
+                                     :class="{
+                                         'bg-gray-300 dark:bg-gray-600': !test.result,
+                                         'bg-green-500': test.result && test.pass,
+                                         'bg-red-500': test.result && !test.pass,
+                                         'animate-pulse bg-yellow-400': test.running
+                                     }"></div>
+                                <span class="text-xs px-2 py-0.5 rounded-full font-medium"
+                                      :class="{
+                                          'bg-blue-100 text-blue-800 dark:bg-blue-900 dark:text-blue-300': test.group === 'dev',
+                                          'bg-purple-100 text-purple-800 dark:bg-purple-900 dark:text-purple-300': test.group === 'prod-domain',
+                                          'bg-orange-100 text-orange-800 dark:bg-orange-900 dark:text-orange-300': test.group === 'prod-subdomain',
+                                          'bg-pink-100 text-pink-800 dark:bg-pink-900 dark:text-pink-300': test.group === 'prod-custom'
+                                      }" x-text="test.groupLabel"></span>
+                                <div>
+                                    <span class="font-mono text-sm text-gray-900 dark:text-white" x-text="test.label"></span>
+                                    <span class="text-xs text-gray-500 dark:text-gray-400 ml-2" x-text="test.description"></span>
+                                </div>
+                            </div>
+                            <div class="flex items-center gap-3">
+                                <template x-if="test.result">
+                                    <span class="text-xs font-mono px-2 py-1 rounded"
+                                          :class="test.pass ? 'bg-green-100 text-green-800 dark:bg-green-900 dark:text-green-300' : 'bg-red-100 text-red-800 dark:bg-red-900 dark:text-red-300'"
+                                          x-text="'platform=' + (test.result.login_platform_code || 'null')"></span>
+                                </template>
+                                <template x-if="test.result">
+                                    <button @click.stop="copyTrace(test)" title="Copy full trace"
+                                        class="px-2 py-1 text-xs bg-gray-100 dark:bg-gray-700 text-gray-600 dark:text-gray-300 rounded hover:bg-gray-200 dark:hover:bg-gray-600">
+                                        Copy
+                                    </button>
+                                </template>
+                                <svg class="w-4 h-4 text-gray-400 transition-transform" :class="test.expanded ? 'rotate-180' : ''"
+                                     fill="none" stroke="currentColor" viewBox="0 0 24 24">
+                                    <path stroke-linecap="round" stroke-linejoin="round" stroke-width="2" d="M19 9l-7 7-7-7"/>
+                                </svg>
+                            </div>
+                        </div>
+                        <!-- Detail -->
+                        <div x-show="test.expanded" x-cloak class="px-4 py-3">
+                            <template x-if="test.result">
+                                <div x-html="renderTrace(test.result)"></div>
+                            </template>
+                            <template x-if="!test.result && !test.running">
+                                <p class="text-sm text-gray-500 dark:text-gray-400">Click "Run All Tests" to trace this case.</p>
+                            </template>
+                            <template x-if="test.running">
+                                <p class="text-sm text-yellow-600 dark:text-yellow-400">Running...</p>
+                            </template>
+                        </div>
+                    </div>
                 </template>
             </div>
         </div>
-    </template>
+
+        <!-- ─────────────────────────────────────────────────────────── -->
+        <!-- Tool: Permissions Audit                                    -->
+        <!-- ─────────────────────────────────────────────────────────── -->
+        <div x-show="activeTool === 'permissions-audit'" x-cloak>
+            <div class="mb-6">
+                <h2 class="text-xl font-bold text-gray-900 dark:text-white">Permissions Audit</h2>
+                <p class="mt-1 text-sm text-gray-500 dark:text-gray-400">
+                    Introspects all registered page routes and reports which have proper auth/permission enforcement.
+                </p>
+            </div>
+
+            <!-- Run Audit button -->
+            <div class="mb-6">
+                <button @click="runPermissionsAudit()" :disabled="auditLoading"
+                    class="px-4 py-2 bg-indigo-600 text-white rounded-lg hover:bg-indigo-700 disabled:opacity-50 text-sm font-medium">
+                    <span x-show="!auditLoading">Run Audit</span>
+                    <span x-show="auditLoading">Running...</span>
+                </button>
+                <span x-show="auditError" class="ml-3 text-sm text-red-600 dark:text-red-400" x-text="auditError"></span>
+            </div>
+
+            <!-- Summary cards -->
+            <template x-if="auditSummary">
+                <div class="grid grid-cols-4 gap-4 mb-6">
+                    <div class="bg-white dark:bg-gray-800 rounded-lg shadow-xs p-4 text-center">
+                        <div class="text-2xl font-bold text-gray-900 dark:text-white" x-text="auditSummary.total"></div>
+                        <div class="text-xs text-gray-500 dark:text-gray-400 uppercase tracking-wider mt-1">Total Routes</div>
+                    </div>
+                    <div class="bg-white dark:bg-gray-800 rounded-lg shadow-xs p-4 text-center border-t-2 border-green-500">
+                        <div class="text-2xl font-bold text-green-600 dark:text-green-400" x-text="auditSummary.ok"></div>
+                        <div class="text-xs text-gray-500 dark:text-gray-400 uppercase tracking-wider mt-1">OK</div>
+                    </div>
+                    <div class="bg-white dark:bg-gray-800 rounded-lg shadow-xs p-4 text-center border-t-2 border-amber-500">
+                        <div class="text-2xl font-bold text-amber-600 dark:text-amber-400" x-text="auditSummary.warnings"></div>
+                        <div class="text-xs text-gray-500 dark:text-gray-400 uppercase tracking-wider mt-1">Warnings</div>
+                    </div>
+                    <div class="bg-white dark:bg-gray-800 rounded-lg shadow-xs p-4 text-center border-t-2 border-red-500">
+                        <div class="text-2xl font-bold text-red-600 dark:text-red-400" x-text="auditSummary.errors"></div>
+                        <div class="text-xs text-gray-500 dark:text-gray-400 uppercase tracking-wider mt-1">Errors</div>
+                    </div>
+                </div>
+            </template>
+
+            <!-- Filter bar -->
+            <template x-if="auditRoutes.length > 0">
+                <div class="mb-4 flex items-center gap-4">
+                    <div>
+                        <label class="block text-xs text-gray-500 dark:text-gray-400 mb-1">Frontend</label>
+                        <select x-model="auditFilterFrontend"
+                            class="px-3 py-1.5 text-sm border rounded-lg dark:bg-gray-700 dark:border-gray-600 dark:text-white">
+                            <option value="all">All</option>
+                            <option value="admin">Admin</option>
+                            <option value="store">Store</option>
+                            <option value="merchant">Merchant</option>
+                            <option value="storefront">Storefront</option>
+                        </select>
+                    </div>
+                    <div>
+                        <label class="block text-xs text-gray-500 dark:text-gray-400 mb-1">Status</label>
+                        <select x-model="auditFilterStatus"
+                            class="px-3 py-1.5 text-sm border rounded-lg dark:bg-gray-700 dark:border-gray-600 dark:text-white">
+                            <option value="all">All</option>
+                            <option value="ok">OK</option>
+                            <option value="warning">Warnings</option>
+                            <option value="error">Errors</option>
+                        </select>
+                    </div>
+                    <div class="ml-auto text-sm text-gray-500 dark:text-gray-400">
+                        Showing <span class="font-medium text-gray-900 dark:text-white" x-text="filteredAuditRoutes.length"></span>
+                        of <span x-text="auditRoutes.length"></span> routes
+                    </div>
+                </div>
+            </template>
+
+            <!-- Results table -->
+            <template x-if="auditRoutes.length > 0">
+                {% call table_wrapper() %}
+                    {{ table_header(['Status', 'Frontend', 'Path', 'Endpoint', 'Auth', 'Issue']) }}
+                    <tbody class="bg-white divide-y dark:divide-gray-700 dark:bg-gray-800">
+                        {{ table_empty_state(6, title='No routes match your filters', icon='shield-check', show_condition='filteredAuditRoutes.length === 0') }}
+                        <template x-for="route in filteredAuditRoutes" :key="route.path + route.methods.join()">
+                            <tr class="text-gray-700 dark:text-gray-400 hover:bg-gray-50 dark:hover:bg-gray-700 text-sm">
+                                <td class="px-4 py-2.5">
+                                    <span class="text-xs px-2 py-0.5 rounded-full font-medium"
+                                          :class="{
+                                              'bg-green-100 text-green-800 dark:bg-green-900 dark:text-green-300': route.status === 'ok',
+                                              'bg-amber-100 text-amber-800 dark:bg-amber-900 dark:text-amber-300': route.status === 'warning',
+                                              'bg-red-100 text-red-800 dark:bg-red-900 dark:text-red-300': route.status === 'error'
+                                          }" x-text="route.status"></span>
+                                </td>
+                                <td class="px-4 py-2.5">
+                                    <span class="text-xs px-2 py-0.5 rounded-full font-medium"
+                                          :class="{
+                                              'bg-blue-100 text-blue-800 dark:bg-blue-900 dark:text-blue-300': route.frontend === 'admin',
+                                              'bg-purple-100 text-purple-800 dark:bg-purple-900 dark:text-purple-300': route.frontend === 'store',
+                                              'bg-orange-100 text-orange-800 dark:bg-orange-900 dark:text-orange-300': route.frontend === 'merchant',
+                                              'bg-pink-100 text-pink-800 dark:bg-pink-900 dark:text-pink-300': route.frontend === 'storefront',
+                                              'bg-gray-100 text-gray-800 dark:bg-gray-700 dark:text-gray-300': !route.frontend
+                                          }" x-text="route.frontend || 'other'"></span>
+                                </td>
+                                <td class="px-4 py-2.5 font-mono text-xs" x-text="route.path"></td>
+                                <td class="px-4 py-2.5 text-xs text-gray-500 dark:text-gray-400" x-text="route.endpoint_name"></td>
+                                <td class="px-4 py-2.5 text-xs">
+                                    <span x-text="route.auth_dependency || '—'" class="font-mono"></span>
+                                    <template x-if="route.auth_detail">
+                                        <span class="text-gray-400 dark:text-gray-500 ml-1" x-text="'(' + route.auth_detail + ')'"></span>
+                                    </template>
+                                </td>
+                                <td class="px-4 py-2.5 text-xs text-gray-500 dark:text-gray-400" x-text="route.issue || '—'"></td>
+                            </tr>
+                        </template>
+                    </tbody>
+                {% endcall %}
+            </template>
+        </div>
+
+    </div>
 </div>
 
 <script>
 function platformDebug() {
     return {
+        // Inherit base layout functionality
+        ...data(),
+
+        // Page identifier
+        currentPage: 'platform-debug',
+
+        // ── Sidebar / tool navigation ──
+        activeTool: 'platform-trace',
+        expandedCategories: ['Resolution', 'Security'],
+        toolGroups: [
+            {
+                category: 'Resolution',
+                items: [
+                    { id: 'platform-trace', label: 'Platform Trace', icon: 'search' },
+                ],
+            },
+            {
+                category: 'Security',
+                items: [
+                    { id: 'permissions-audit', label: 'Permissions Audit', icon: 'shield-check' },
+                ],
+            },
+        ],
+
+        toggleCategory(cat) {
+            const idx = this.expandedCategories.indexOf(cat);
+            if (idx >= 0) this.expandedCategories.splice(idx, 1);
+            else this.expandedCategories.push(cat);
+        },
+        isCategoryExpanded(cat) {
+            return this.expandedCategories.includes(cat);
+        },
+        selectTool(toolId) {
+            this.activeTool = toolId;
+        },
+
+        // ── Platform Trace (existing) ──
         running: false,
         filterGroup: 'all',
         customHost: 'localhost:8000',
@@ -308,9 +512,6 @@ function platformDebug() {
             },
 
             // ── Prod custom domain ──
-            // Uses real StoreDomain records:
-            //   wizatech.shop → store_id=1 (WIZATECH), platform_id=1 (oms)
-            //   fashionhub.store → store_id=4 (FASHIONHUB), platform_id=3 (loyalty)
             {
                 id: 'prod-c-1', group: 'prod-custom', groupLabel: 'Prod Custom',
                 label: 'wizatech.shop /store/login',
@@ -460,6 +661,35 @@ function platformDebug() {
 
             return html;
         },
+
+        // ── Permissions Audit ──
+        auditRoutes: [],
+        auditSummary: null,
+        auditLoading: false,
+        auditError: '',
+        auditFilterFrontend: 'all',
+        auditFilterStatus: 'all',
+
+        get filteredAuditRoutes() {
+            return this.auditRoutes.filter(r => {
+                if (this.auditFilterFrontend !== 'all' && r.frontend !== this.auditFilterFrontend) return false;
+                if (this.auditFilterStatus !== 'all' && r.status !== this.auditFilterStatus) return false;
+                return true;
+            });
+        },
+
+        async runPermissionsAudit() {
+            this.auditLoading = true;
+            this.auditError = '';
+            try {
+                const resp = await apiClient.get('/admin/diagnostics/permissions-audit');
+                this.auditRoutes = resp.routes;
+                this.auditSummary = resp.summary;
+            } catch (e) {
+                this.auditError = e.message || 'Failed to run audit';
+            }
+            this.auditLoading = false;
+        },
     };
 }
 </script>