fix(notifications): test button sends real data preview, not generic string

- Tests check current conditions against rule categories/severity
- Shows actual alert messages that would fire right now
- Falls back to example messages from category registry if no matches
- Preview mode shows without sending, Send Test delivers with [TEST] prefix
- Mesh delivery applies real summarization so preview matches actual output
- Added test dialog UI showing conditions matched and preview messages

Co-Authored-By: Claude Opus 4.5 <noreply@anthropic.com>

meshai/dashboard/api/notification_routes.py

@@ -1,35 +1,84 @@
-"""Notification API routes."""
-
-from fastapi import APIRouter, Request, HTTPException
-
-router = APIRouter(prefix="/notifications", tags=["notifications"])
-
-
-@router.get("/categories")
-async def get_categories():
-    """Get all alert categories with descriptions."""
-    try:
-        from ...notifications.categories import list_categories
-        return list_categories()
-    except ImportError:
-        return []
-
-
-@router.get("/rules")
-async def get_rules(request: Request):
-    """Get configured notification rules."""
-    notification_router = getattr(request.app.state, "notification_router", None)
-    if not notification_router:
-        return []
-    return notification_router.get_rules()
-
-
-@router.post("/rules/{rule_index}/test")
-async def test_rule(request: Request, rule_index: int):
-    """Send a test alert through a specific rule."""
-    notification_router = getattr(request.app.state, "notification_router", None)
-    if not notification_router:
-        raise HTTPException(status_code=404, detail="Notification router not configured")
-
-    success, message = await notification_router.test_rule(rule_index)
-    return {"success": success, "message": message}
+"""Notification API routes."""
+
+from fastapi import APIRouter, Request, HTTPException
+from pydantic import BaseModel
+from typing import Optional
+
+router = APIRouter(prefix="/notifications", tags=["notifications"])
+
+
+class TestRequest(BaseModel):
+    """Request body for test endpoint."""
+    send: bool = False  # True = actually deliver, False = preview only
+
+
+@router.get("/categories")
+async def get_categories():
+    """Get all alert categories with descriptions."""
+    try:
+        from ...notifications.categories import list_categories
+        return list_categories()
+    except ImportError:
+        return []
+
+
+@router.get("/rules")
+async def get_rules(request: Request):
+    """Get configured notification rules."""
+    notification_router = getattr(request.app.state, "notification_router", None)
+    if not notification_router:
+        return []
+    return notification_router.get_rules()
+
+
+@router.post("/rules/{rule_index}/test")
+async def test_rule(request: Request, rule_index: int, body: Optional[TestRequest] = None):
+    """Test a notification rule against current conditions.
+
+    Returns:
+        {
+            "conditions_matched": int,       # Number of matching alerts
+            "preview_messages": list[str],   # Messages that would send
+            "is_example": bool,              # True if using example messages
+            "delivered": bool,               # True if actually sent
+            "delivery_method": str,          # e.g. "mesh_broadcast"
+            "delivery_result": str,          # Result message
+        }
+    """
+    notification_router = getattr(request.app.state, "notification_router", None)
+    if not notification_router:
+        raise HTTPException(status_code=404, detail="Notification router not configured")
+
+    alert_engine = getattr(request.app.state, "alert_engine", None)
+    env_store = getattr(request.app.state, "env_store", None)
+
+    send = body.send if body else False
+
+    result = await notification_router.test_rule_with_conditions(
+        rule_index,
+        alert_engine=alert_engine,
+        env_store=env_store,
+        send=send,
+    )
+
+    return result
+
+
+@router.post("/rules/{rule_index}/preview")
+async def preview_rule(request: Request, rule_index: int):
+    """Preview what a rule would match right now (without sending)."""
+    notification_router = getattr(request.app.state, "notification_router", None)
+    if not notification_router:
+        raise HTTPException(status_code=404, detail="Notification router not configured")
+
+    alert_engine = getattr(request.app.state, "alert_engine", None)
+    env_store = getattr(request.app.state, "env_store", None)
+
+    result = await notification_router.test_rule_with_conditions(
+        rule_index,
+        alert_engine=alert_engine,
+        env_store=env_store,
+        send=False,
+    )
+
+    return result

meshai/dashboard/static/index.html

@@ -8,8 +8,8 @@
     <link rel="preconnect" href="https://fonts.googleapis.com">
     <link rel="preconnect" href="https://fonts.gstatic.com" crossorigin>
     <link href="https://fonts.googleapis.com/css2?family=JetBrains+Mono:wght@400;500;600;700&display=swap" rel="stylesheet">
-    <script type="module" crossorigin src="/assets/index-CYCOCObI.js"></script>
-    <link rel="stylesheet" crossorigin href="/assets/index-DbmGQdf0.css">
+    <script type="module" crossorigin src="/assets/index-BXyt_EfK.js"></script>
+    <link rel="stylesheet" crossorigin href="/assets/index-CtFYHJy4.css">
   </head>
   <body>
     <div id="root"></div>