diff --git a/celery_app.py b/celery_app.py
index 6666b76..edccda4 100644
--- a/celery_app.py
+++ b/celery_app.py
@@ -1,7 +1,7 @@
 import sys
 import time
 from celery import Celery
-from celery.signals import worker_ready, worker_process_init, task_prerun, task_postrun
+from celery.signals import worker_ready, task_prerun, task_postrun
 from dotenv import load_dotenv
 import os
 
@@ -34,20 +34,17 @@ CELERY_METRICS_PORT = int(os.getenv("CELERY_METRICS_PORT", "9090"))
 # Track task start times for duration measurement
 _task_start_times: dict[str, float] = {}
 
-
-@worker_process_init.connect
-def _init_worker_metrics(**kwargs: object) -> None:
-    """Initialise OTel metrics in each prefork worker process."""
-    from api.metrics import init_metrics
-    init_metrics(os.getenv("SERVICE_NAME", "celery-worker"))
+# Initialise OTel metrics at module level so prefork children inherit the
+# MeterProvider and PrometheusMetricReader.  The prometheus_client collectors
+# are registered in the default registry before fork, so child-process
+# recordings are visible to the HTTP server started in the main process.
+from api.metrics import init_metrics as _init_metrics  # noqa: E402
+_init_metrics(os.getenv("SERVICE_NAME", "celery-worker"))
 
 
 @worker_ready.connect
 def _start_metrics_server(**kwargs: object) -> None:
     """Start a lightweight Prometheus HTTP server in the main worker process."""
-    from api.metrics import init_metrics
-    init_metrics(os.getenv("SERVICE_NAME", "celery-worker"))
-
     from prometheus_client import start_http_server
     start_http_server(CELERY_METRICS_PORT)
 
diff --git a/grafana/dashboard.json b/grafana/dashboard.json
index 90ddebe..84fca5d 100644
--- a/grafana/dashboard.json
+++ b/grafana/dashboard.json
@@ -1,345 +1,2608 @@
 {
   "annotations": {
-    "list": []
+    "list": [
+      {
+        "builtIn": 1,
+        "datasource": {
+          "type": "datasource",
+          "uid": "grafana"
+        },
+        "enable": true,
+        "hide": true,
+        "iconColor": "rgba(0, 211, 255, 1)",
+        "name": "Annotations & Alerts",
+        "type": "dashboard"
+      }
+    ]
   },
   "editable": true,
   "fiscalYearStartMonth": 0,
   "graphTooltip": 1,
-  "id": null,
   "links": [],
   "panels": [
     {
       "collapsed": false,
-      "gridPos": { "h": 1, "w": 24, "x": 0, "y": 0 },
+      "gridPos": {
+        "h": 1,
+        "w": 24,
+        "x": 0,
+        "y": 0
+      },
       "id": 100,
-      "title": "Scrape Overview",
+      "panels": [],
+      "title": "Scraping Overview",
       "type": "row"
     },
     {
-      "datasource": { "type": "prometheus", "uid": "${DS_PROMETHEUS}" },
+      "datasource": {
+        "type": "prometheus",
+        "uid": "PBFA97CFB590B2093"
+      },
+      "description": "Total listings discovered during scrape runs",
       "fieldConfig": {
         "defaults": {
-          "unit": "s",
+          "mappings": [],
           "thresholds": {
             "mode": "absolute",
             "steps": [
-              { "color": "green", "value": null },
-              { "color": "yellow", "value": 300 },
-              { "color": "red", "value": 600 }
+              {
+                "color": "blue",
+                "value": null
+              }
             ]
-          }
-        }
+          },
+          "unit": "short"
+        },
+        "overrides": []
+      },
+      "gridPos": {
+        "h": 4,
+        "w": 4,
+        "x": 0,
+        "y": 1
       },
-      "gridPos": { "h": 6, "w": 6, "x": 0, "y": 1 },
       "id": 1,
       "options": {
-        "reduceOptions": { "calcs": ["lastNotNull"] }
-      },
-      "title": "Last Scrape Duration",
-      "type": "stat",
-      "targets": [
-        {
-          "expr": "histogram_quantile(0.5, rate(scrape_duration_seconds_bucket[24h]))",
-          "legendFormat": "p50"
-        }
-      ]
-    },
-    {
-      "datasource": { "type": "prometheus", "uid": "${DS_PROMETHEUS}" },
-      "fieldConfig": { "defaults": { "unit": "short" } },
-      "gridPos": { "h": 6, "w": 6, "x": 6, "y": 1 },
-      "id": 2,
-      "title": "Listings Found vs Processed",
-      "type": "timeseries",
-      "targets": [
-        {
-          "expr": "increase(scrape_listings_found_total[1h])",
-          "legendFormat": "Found"
+        "colorMode": "background",
+        "graphMode": "area",
+        "justifyMode": "auto",
+        "orientation": "auto",
+        "reduceOptions": {
+          "calcs": [
+            "lastNotNull"
+          ],
+          "fields": "",
+          "values": false
         },
+        "showPercentChange": false,
+        "textMode": "auto",
+        "wideLayout": true
+      },
+      "pluginVersion": "12.3.0",
+      "targets": [
         {
-          "expr": "increase(scrape_listings_processed_total[1h])",
-          "legendFormat": "Processed"
+          "datasource": {
+            "type": "prometheus",
+            "uid": "PBFA97CFB590B2093"
+          },
+          "editorMode": "code",
+          "expr": "scrape_listings_found_total{job=\"realestate-crawler-celery\"}",
+          "legendFormat": "Found",
+          "range": true,
+          "refId": "A"
         }
-      ]
+      ],
+      "title": "Total Listings Found",
+      "type": "stat"
     },
     {
-      "datasource": { "type": "prometheus", "uid": "${DS_PROMETHEUS}" },
+      "datasource": {
+        "type": "prometheus",
+        "uid": "PBFA97CFB590B2093"
+      },
+      "description": "Total listings successfully processed",
       "fieldConfig": {
         "defaults": {
-          "unit": "short",
+          "mappings": [],
           "thresholds": {
             "mode": "absolute",
             "steps": [
-              { "color": "green", "value": null },
-              { "color": "red", "value": 1 }
+              {
+                "color": "green",
+                "value": null
+              }
             ]
-          }
-        }
+          },
+          "unit": "short"
+        },
+        "overrides": []
+      },
+      "gridPos": {
+        "h": 4,
+        "w": 4,
+        "x": 4,
+        "y": 1
+      },
+      "id": 2,
+      "options": {
+        "colorMode": "background",
+        "graphMode": "area",
+        "justifyMode": "auto",
+        "orientation": "auto",
+        "reduceOptions": {
+          "calcs": [
+            "lastNotNull"
+          ],
+          "fields": "",
+          "values": false
+        },
+        "showPercentChange": false,
+        "textMode": "auto",
+        "wideLayout": true
+      },
+      "pluginVersion": "12.3.0",
+      "targets": [
+        {
+          "datasource": {
+            "type": "prometheus",
+            "uid": "PBFA97CFB590B2093"
+          },
+          "editorMode": "code",
+          "expr": "scrape_listings_processed_total{job=\"realestate-crawler-celery\"}",
+          "legendFormat": "Processed",
+          "range": true,
+          "refId": "A"
+        }
+      ],
+      "title": "Total Listings Processed",
+      "type": "stat"
+    },
+    {
+      "datasource": {
+        "type": "prometheus",
+        "uid": "PBFA97CFB590B2093"
+      },
+      "description": "Total listings that failed processing",
+      "fieldConfig": {
+        "defaults": {
+          "mappings": [],
+          "thresholds": {
+            "mode": "absolute",
+            "steps": [
+              {
+                "color": "red",
+                "value": null
+              }
+            ]
+          },
+          "unit": "short"
+        },
+        "overrides": []
+      },
+      "gridPos": {
+        "h": 4,
+        "w": 4,
+        "x": 8,
+        "y": 1
       },
-      "gridPos": { "h": 6, "w": 6, "x": 12, "y": 1 },
       "id": 3,
       "options": {
-        "reduceOptions": { "calcs": ["lastNotNull"] }
-      },
-      "title": "Failed Listings (Last Scrape)",
-      "type": "stat",
-      "targets": [
-        {
-          "expr": "increase(scrape_listings_failed_total[1h])",
-          "legendFormat": "Failed"
-        }
-      ]
-    },
-    {
-      "datasource": { "type": "prometheus", "uid": "${DS_PROMETHEUS}" },
-      "fieldConfig": { "defaults": { "unit": "short" } },
-      "gridPos": { "h": 6, "w": 6, "x": 18, "y": 1 },
-      "id": 4,
-      "title": "Pages Fetched & Subqueries",
-      "type": "timeseries",
-      "targets": [
-        {
-          "expr": "increase(scrape_pages_fetched_total[1h])",
-          "legendFormat": "Pages"
+        "colorMode": "background",
+        "graphMode": "area",
+        "justifyMode": "auto",
+        "orientation": "auto",
+        "reduceOptions": {
+          "calcs": [
+            "lastNotNull"
+          ],
+          "fields": "",
+          "values": false
         },
-        {
-          "expr": "increase(scrape_subqueries_total[1h])",
-          "legendFormat": "Subqueries"
-        }
-      ]
-    },
-    {
-      "collapsed": false,
-      "gridPos": { "h": 1, "w": 24, "x": 0, "y": 7 },
-      "id": 101,
-      "title": "Throttle & Circuit Breaker",
-      "type": "row"
-    },
-    {
-      "datasource": { "type": "prometheus", "uid": "${DS_PROMETHEUS}" },
-      "fieldConfig": { "defaults": { "unit": "short" } },
-      "gridPos": { "h": 8, "w": 12, "x": 0, "y": 8 },
-      "id": 5,
-      "title": "Throttle Events by Type",
-      "type": "timeseries",
+        "showPercentChange": false,
+        "textMode": "auto",
+        "wideLayout": true
+      },
+      "pluginVersion": "12.3.0",
       "targets": [
         {
-          "expr": "increase(throttle_events_total[5m])",
-          "legendFormat": "{{ type }}"
+          "datasource": {
+            "type": "prometheus",
+            "uid": "PBFA97CFB590B2093"
+          },
+          "editorMode": "code",
+          "expr": "scrape_listings_failed_total{job=\"realestate-crawler-celery\"}",
+          "legendFormat": "Failed",
+          "range": true,
+          "refId": "A"
         }
-      ]
+      ],
+      "title": "Total Listings Failed",
+      "type": "stat"
     },
     {
-      "datasource": { "type": "prometheus", "uid": "${DS_PROMETHEUS}" },
+      "datasource": {
+        "type": "prometheus",
+        "uid": "PBFA97CFB590B2093"
+      },
+      "description": "Total API pages fetched during scraping",
+      "fieldConfig": {
+        "defaults": {
+          "mappings": [],
+          "thresholds": {
+            "mode": "absolute",
+            "steps": [
+              {
+                "color": "purple",
+                "value": null
+              }
+            ]
+          },
+          "unit": "short"
+        },
+        "overrides": []
+      },
+      "gridPos": {
+        "h": 4,
+        "w": 4,
+        "x": 12,
+        "y": 1
+      },
+      "id": 4,
+      "options": {
+        "colorMode": "background",
+        "graphMode": "area",
+        "justifyMode": "auto",
+        "orientation": "auto",
+        "reduceOptions": {
+          "calcs": [
+            "lastNotNull"
+          ],
+          "fields": "",
+          "values": false
+        },
+        "showPercentChange": false,
+        "textMode": "auto",
+        "wideLayout": true
+      },
+      "pluginVersion": "12.3.0",
+      "targets": [
+        {
+          "datasource": {
+            "type": "prometheus",
+            "uid": "PBFA97CFB590B2093"
+          },
+          "editorMode": "code",
+          "expr": "scrape_pages_fetched_total{job=\"realestate-crawler-celery\"}",
+          "legendFormat": "Pages",
+          "range": true,
+          "refId": "A"
+        }
+      ],
+      "title": "Total Pages Fetched",
+      "type": "stat"
+    },
+    {
+      "datasource": {
+        "type": "prometheus",
+        "uid": "PBFA97CFB590B2093"
+      },
+      "description": "Total subqueries executed after query splitting",
+      "fieldConfig": {
+        "defaults": {
+          "mappings": [],
+          "thresholds": {
+            "mode": "absolute",
+            "steps": [
+              {
+                "color": "orange",
+                "value": null
+              }
+            ]
+          },
+          "unit": "short"
+        },
+        "overrides": []
+      },
+      "gridPos": {
+        "h": 4,
+        "w": 4,
+        "x": 16,
+        "y": 1
+      },
+      "id": 5,
+      "options": {
+        "colorMode": "background",
+        "graphMode": "area",
+        "justifyMode": "auto",
+        "orientation": "auto",
+        "reduceOptions": {
+          "calcs": [
+            "lastNotNull"
+          ],
+          "fields": "",
+          "values": false
+        },
+        "showPercentChange": false,
+        "textMode": "auto",
+        "wideLayout": true
+      },
+      "pluginVersion": "12.3.0",
+      "targets": [
+        {
+          "datasource": {
+            "type": "prometheus",
+            "uid": "PBFA97CFB590B2093"
+          },
+          "editorMode": "code",
+          "expr": "scrape_subqueries_total{job=\"realestate-crawler-celery\"}",
+          "legendFormat": "Subqueries",
+          "range": true,
+          "refId": "A"
+        }
+      ],
+      "title": "Total Subqueries",
+      "type": "stat"
+    },
+    {
+      "datasource": {
+        "type": "prometheus",
+        "uid": "PBFA97CFB590B2093"
+      },
+      "description": "Circuit breaker state: 0=closed (healthy), 1=half-open, 2=open (tripped)",
       "fieldConfig": {
         "defaults": {
           "mappings": [
-            { "options": { "0": { "text": "CLOSED", "color": "green" } }, "type": "value" },
-            { "options": { "1": { "text": "HALF_OPEN", "color": "yellow" } }, "type": "value" },
-            { "options": { "2": { "text": "OPEN", "color": "red" } }, "type": "value" }
-          ]
-        }
+            {
+              "options": {
+                "0": {
+                  "color": "green",
+                  "text": "Closed"
+                }
+              },
+              "type": "value"
+            },
+            {
+              "options": {
+                "1": {
+                  "color": "yellow",
+                  "text": "Half-Open"
+                }
+              },
+              "type": "value"
+            },
+            {
+              "options": {
+                "2": {
+                  "color": "red",
+                  "text": "Open"
+                }
+              },
+              "type": "value"
+            }
+          ],
+          "thresholds": {
+            "mode": "absolute",
+            "steps": [
+              {
+                "color": "green",
+                "value": null
+              },
+              {
+                "color": "yellow",
+                "value": 1
+              },
+              {
+                "color": "red",
+                "value": 2
+              }
+            ]
+          },
+          "unit": "short"
+        },
+        "overrides": []
+      },
+      "gridPos": {
+        "h": 4,
+        "w": 4,
+        "x": 20,
+        "y": 1
       },
-      "gridPos": { "h": 8, "w": 12, "x": 12, "y": 8 },
       "id": 6,
-      "title": "Circuit Breaker State",
-      "type": "state-timeline",
+      "options": {
+        "colorMode": "background",
+        "graphMode": "none",
+        "justifyMode": "auto",
+        "orientation": "auto",
+        "reduceOptions": {
+          "calcs": [
+            "lastNotNull"
+          ],
+          "fields": "",
+          "values": false
+        },
+        "showPercentChange": false,
+        "textMode": "auto",
+        "wideLayout": true
+      },
+      "pluginVersion": "12.3.0",
       "targets": [
         {
-          "expr": "circuit_breaker_state",
-          "legendFormat": "State"
+          "datasource": {
+            "type": "prometheus",
+            "uid": "PBFA97CFB590B2093"
+          },
+          "editorMode": "code",
+          "expr": "circuit_breaker_state{job=\"realestate-crawler-celery\"}",
+          "legendFormat": "State",
+          "range": true,
+          "refId": "A"
         }
-      ]
+      ],
+      "title": "Circuit Breaker",
+      "type": "stat"
     },
     {
       "collapsed": false,
-      "gridPos": { "h": 1, "w": 24, "x": 0, "y": 16 },
-      "id": 102,
-      "title": "API Performance",
+      "gridPos": {
+        "h": 1,
+        "w": 24,
+        "x": 0,
+        "y": 5
+      },
+      "id": 101,
+      "panels": [],
+      "title": "Scraping Activity",
       "type": "row"
     },
     {
-      "datasource": { "type": "prometheus", "uid": "${DS_PROMETHEUS}" },
-      "fieldConfig": { "defaults": { "unit": "reqps" } },
-      "gridPos": { "h": 8, "w": 8, "x": 0, "y": 17 },
-      "id": 7,
-      "title": "Request Rate by Endpoint",
-      "type": "timeseries",
-      "targets": [
-        {
-          "expr": "sum(rate(http_server_duration_milliseconds_count[5m])) by (http_route)",
-          "legendFormat": "{{ http_route }}"
-        }
-      ]
-    },
-    {
-      "datasource": { "type": "prometheus", "uid": "${DS_PROMETHEUS}" },
-      "fieldConfig": { "defaults": { "unit": "ms" } },
-      "gridPos": { "h": 8, "w": 8, "x": 8, "y": 17 },
-      "id": 8,
-      "title": "Latency Percentiles",
-      "type": "timeseries",
-      "targets": [
-        {
-          "expr": "histogram_quantile(0.50, sum(rate(http_server_duration_milliseconds_bucket[5m])) by (le))",
-          "legendFormat": "p50"
-        },
-        {
-          "expr": "histogram_quantile(0.95, sum(rate(http_server_duration_milliseconds_bucket[5m])) by (le))",
-          "legendFormat": "p95"
-        },
-        {
-          "expr": "histogram_quantile(0.99, sum(rate(http_server_duration_milliseconds_bucket[5m])) by (le))",
-          "legendFormat": "p99"
-        }
-      ]
-    },
-    {
-      "datasource": { "type": "prometheus", "uid": "${DS_PROMETHEUS}" },
-      "fieldConfig": {
-        "defaults": { "unit": "percentunit" }
+      "datasource": {
+        "type": "prometheus",
+        "uid": "PBFA97CFB590B2093"
       },
-      "gridPos": { "h": 8, "w": 8, "x": 16, "y": 17 },
-      "id": 9,
-      "title": "GeoJSON Cache Hit Rate",
-      "type": "timeseries",
+      "description": "Rate of listings found, processed, and failed",
+      "fieldConfig": {
+        "defaults": {
+          "color": {
+            "mode": "palette-classic"
+          },
+          "custom": {
+            "axisBorderShow": false,
+            "axisCenteredZero": false,
+            "axisColorMode": "text",
+            "axisPlacement": "auto",
+            "barAlignment": 0,
+            "barWidthFactor": 0.6,
+            "drawStyle": "line",
+            "fillOpacity": 20,
+            "gradientMode": "none",
+            "hideFrom": {
+              "legend": false,
+              "tooltip": false,
+              "viz": false
+            },
+            "insertNulls": false,
+            "lineInterpolation": "smooth",
+            "lineWidth": 2,
+            "pointSize": 5,
+            "scaleDistribution": {
+              "type": "linear"
+            },
+            "showPoints": "never",
+            "spanNulls": false,
+            "stacking": {
+              "group": "A",
+              "mode": "none"
+            },
+            "thresholdsStyle": {
+              "mode": "off"
+            }
+          },
+          "mappings": [],
+          "thresholds": {
+            "mode": "absolute",
+            "steps": [
+              {
+                "color": "green",
+                "value": null
+              }
+            ]
+          },
+          "unit": "short"
+        },
+        "overrides": [
+          {
+            "matcher": {
+              "id": "byName",
+              "options": "Failed"
+            },
+            "properties": [
+              {
+                "id": "color",
+                "value": {
+                  "fixedColor": "red",
+                  "mode": "fixed"
+                }
+              }
+            ]
+          }
+        ]
+      },
+      "gridPos": {
+        "h": 8,
+        "w": 12,
+        "x": 0,
+        "y": 6
+      },
+      "id": 10,
+      "options": {
+        "legend": {
+          "calcs": [
+            "sum",
+            "lastNotNull"
+          ],
+          "displayMode": "table",
+          "placement": "bottom",
+          "showLegend": true
+        },
+        "tooltip": {
+          "mode": "multi",
+          "sort": "desc"
+        }
+      },
+      "pluginVersion": "12.3.0",
       "targets": [
         {
-          "expr": "sum(rate(geojson_cache_operations_total{result=\"hit\"}[5m])) / sum(rate(geojson_cache_operations_total[5m]))",
-          "legendFormat": "Hit Rate"
+          "datasource": {
+            "type": "prometheus",
+            "uid": "PBFA97CFB590B2093"
+          },
+          "editorMode": "code",
+          "expr": "increase(scrape_listings_found_total{job=\"realestate-crawler-celery\"}[5m])",
+          "legendFormat": "Found",
+          "range": true,
+          "refId": "A"
+        },
+        {
+          "datasource": {
+            "type": "prometheus",
+            "uid": "PBFA97CFB590B2093"
+          },
+          "editorMode": "code",
+          "expr": "increase(scrape_listings_processed_total{job=\"realestate-crawler-celery\"}[5m])",
+          "legendFormat": "Processed",
+          "range": true,
+          "refId": "B"
+        },
+        {
+          "datasource": {
+            "type": "prometheus",
+            "uid": "PBFA97CFB590B2093"
+          },
+          "editorMode": "code",
+          "expr": "increase(scrape_listings_failed_total{job=\"realestate-crawler-celery\"}[5m])",
+          "legendFormat": "Failed",
+          "range": true,
+          "refId": "C"
         }
-      ]
+      ],
+      "title": "Listing Activity (5m increase)",
+      "type": "timeseries"
+    },
+    {
+      "datasource": {
+        "type": "prometheus",
+        "uid": "PBFA97CFB590B2093"
+      },
+      "description": "Duration of full scrape runs",
+      "fieldConfig": {
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