Merge pull request #48 from zvx-echo6/feat/l-c-events-table-readable

feat(L-c): operator /events table polish — readable Time, Location, Subject, Adapter columns; sortable; plain-language summaries

src/central/adapters/eonet.py

@@ -148,6 +148,9 @@ class EONETAdapter(SourceAdapter):
     wizard_order = None
     default_cadence_s = 1800
 
+    # Event lat/lon mirrored from Geo.centroid into event.data (see poll()).
+    enrichment_locations = [("latitude", "longitude")]
+
     def __init__(
         self,
         config: AdapterConfig,
@@ -370,6 +373,12 @@ class EONETAdapter(SourceAdapter):
                 "latest_geometry_date": latest_date_iso or None,
             }
 
+            # Mirror centroid (lon, lat) into top-level data keys for the flat
+            # enrichment path (see enrichment_locations).
+            if centroid is not None:
+                data["latitude"] = centroid[1]
+                data["longitude"] = centroid[0]
+
             dedup_key = _dedup_key(event_id, latest_date_iso)
 
             if self.is_published(dedup_key):

src/central/adapters/gdacs.py

@@ -150,6 +150,9 @@ class GDACSAdapter(SourceAdapter):
     wizard_order = None
     default_cadence_s = 600
 
+    # Event lat/lon mirrored from Geo.centroid into event.data (see poll()).
+    enrichment_locations = [("latitude", "longitude")]
+
     def __init__(
         self,
         config: AdapterConfig,
@@ -391,6 +394,12 @@ class GDACSAdapter(SourceAdapter):
                 "iscurrent": iscurrent,
             }
 
+            # Mirror centroid (lon, lat) into top-level data keys for the flat
+            # enrichment path (see enrichment_locations).
+            if centroid is not None:
+                data["latitude"] = centroid[1]
+                data["longitude"] = centroid[0]
+
             if not iscurrent:
                 # Explicit tombstone from upstream. Only emit if we previously observed it.
                 if guid in observed_before:

src/central/adapters/inciweb.py

@@ -171,6 +171,9 @@ class InciWebAdapter(SourceAdapter):
     wizard_order = None  # Ships disabled
     default_cadence_s = 600
 
+    # Coords parsed from the narrative, mirrored from Geo.centroid into event.data.
+    enrichment_locations = [("latitude", "longitude")]
+
     def __init__(
         self,
         config: AdapterConfig,
@@ -461,6 +464,9 @@ class InciWebAdapter(SourceAdapter):
                     "url": item.get("link", ""),
                     "guid": guid,
                     "raw": item,
+                    # Mirror centroid (lon, lat) for the flat enrichment path.
+                    "latitude": centroid[1] if centroid else None,
+                    "longitude": centroid[0] if centroid else None,
                 },
             )
 

src/central/adapters/nwis.py

@@ -124,6 +124,9 @@ class NWISAdapter(SourceAdapter):
     wizard_order = None
     default_cadence_s = 900
 
+    # Site lat/lon mirrored from Geo.centroid into event.data (see _build_event).
+    enrichment_locations = [("latitude", "longitude")]
+
     def __init__(
         self,
         config: AdapterConfig,
@@ -372,6 +375,12 @@ class NWISAdapter(SourceAdapter):
             "last_modified": props.get("last_modified"),
         }
 
+        # Mirror centroid (lon, lat) into top-level data keys so the flat
+        # enrichment path can reach them (see enrichment_locations).
+        if centroid is not None:
+            data["latitude"] = centroid[1]
+            data["longitude"] = centroid[0]
+
         return Event(
             id=f"{monitoring_location_id}:{parameter_code}:{time_iso}",
             adapter=self.name,

src/central/adapters/nws.py

@@ -212,6 +212,9 @@ class NWSAdapter(SourceAdapter):
     wizard_order = 1
     default_cadence_s = 60
 
+    # Alerts cover forecast zones/counties (polygons), not a single point.
+    enrichment_locations = []
+
     def __init__(
         self,
         config: AdapterConfig,

src/central/adapters/swpc_alerts.py

@@ -41,6 +41,9 @@ class SWPCAlertsAdapter(SourceAdapter):
     wizard_order = None
     default_cadence_s = 300
 
+    # Space weather — no geographic coordinate to enrich.
+    enrichment_locations = []
+
     def __init__(
         self,
         config: AdapterConfig,

src/central/adapters/swpc_kindex.py

@@ -41,6 +41,9 @@ class SWPCKindexAdapter(SourceAdapter):
     wizard_order = None
     default_cadence_s = 600
 
+    # Space weather — no geographic coordinate to enrich.
+    enrichment_locations = []
+
     def __init__(
         self,
         config: AdapterConfig,

src/central/adapters/swpc_protons.py

@@ -40,6 +40,9 @@ class SWPCProtonsAdapter(SourceAdapter):
     wizard_order = None
     default_cadence_s = 600
 
+    # Space weather — no geographic coordinate to enrich.
+    enrichment_locations = []
+
     def __init__(
         self,
         config: AdapterConfig,

src/central/adapters/usgs_quake.py

@@ -79,6 +79,9 @@ class USGSQuakeAdapter(SourceAdapter):
     wizard_order = 3
     default_cadence_s = 60
 
+    # Epicenter lat/lon are top-level keys in event.data (see _build_event).
+    enrichment_locations = [("latitude", "longitude")]
+
     def __init__(
         self,
         config: AdapterConfig,

src/central/adapters/wfigs_incidents.py

@@ -60,6 +60,9 @@ class WFIGSIncidentsAdapter(SourceAdapter):
     wizard_order = None  # Not in setup wizard
     default_cadence_s = 300
 
+    # Incident-point lat/lon mirrored from Geo.centroid into event.data.
+    enrichment_locations = [("latitude", "longitude")]
+
     def __init__(
         self,
         config: AdapterConfig,
@@ -326,6 +329,9 @@ class WFIGSIncidentsAdapter(SourceAdapter):
                     "POOState_raw": state_raw,
                     "POOCounty": county,
                     "raw": props,
+                    # Mirror centroid (lon, lat) for the flat enrichment path.
+                    "latitude": centroid[1] if centroid else None,
+                    "longitude": centroid[0] if centroid else None,
                 },
             )
 

src/central/adapters/wfigs_perimeters.py

@@ -60,6 +60,9 @@ class WFIGSPerimetersAdapter(SourceAdapter):
     wizard_order = None  # Not in setup wizard
     default_cadence_s = 300
 
+    # Perimeters are polygons, not a single point — no coordinate to enrich.
+    enrichment_locations = []
+
     def __init__(
         self,
         config: AdapterConfig,

src/central/gui/routes.py

@@ -4,7 +4,7 @@ import base64
 import json
 import logging
 import re
-from datetime import datetime
+from datetime import datetime, timezone
 from typing import Any
 
 logger = logging.getLogger("central.gui.routes")
@@ -2870,6 +2870,31 @@ def _geometry_summary(geometry: dict | None) -> str:
         return geom_type
 
 
+def _format_event_time(iso: str | None) -> str:
+    """Format an ISO-8601 timestamp as 'MM-DD-YYYY HH:MM UTC' (24h, no seconds)."""
+    if not iso:
+        return ""
+    try:
+        dt = datetime.fromisoformat(iso).astimezone(timezone.utc)
+    except (ValueError, TypeError):
+        return iso
+    return dt.strftime("%m-%d-%Y %H:%M") + " UTC"
+
+
+def _decorate_table_events(events: list[dict]) -> None:
+    """Add display-only fields used by the HTML events table (in place).
+
+    These are for the table chrome only and are deliberately NOT added in
+    _fetch_events, so the /events.json payload is unchanged. adapter_display
+    is sourced from the registry (display_name), with the bare name as fallback.
+    """
+    display = {cls.name: cls.display_name for cls in discover_adapters().values()}
+    for event in events:
+        event["geometry_summary"] = _geometry_summary(event.get("geometry"))
+        event["time_human"] = _format_event_time(event.get("time"))
+        event["adapter_display"] = display.get(event.get("adapter"), event.get("adapter"))
+
+
 
 @router.get("/events.json")
 async def events_json(request: Request):
@@ -2958,9 +2983,15 @@ async def events_list(request: Request) -> HTMLResponse:
             events = result.events
             next_cursor = result.next_cursor
 
-    # Add geometry summary to each event
-    for event in events:
-        event["geometry_summary"] = _geometry_summary(event.get("geometry"))
+    # Add table-only display fields (time_human, adapter_display, geometry_summary)
+    _decorate_table_events(events)
+
+    # Registry-derived adapter list for the filter <select> and map legend.
+    # Sorted by name for stable ordering; index drives the legend color palette.
+    adapters = [
+        {"name": cls.name, "display_name": cls.display_name}
+        for cls in sorted(discover_adapters().values(), key=lambda c: c.name)
+    ]
 
     return templates.TemplateResponse(
         request=request,
@@ -2974,6 +3005,7 @@ async def events_list(request: Request) -> HTMLResponse:
             "filter_error": error,
             "tile_url": tile_url,
             "tile_attribution": tile_attribution,
+            "adapters": adapters,
         },
     )
 
@@ -3014,9 +3046,8 @@ async def events_rows(request: Request) -> HTMLResponse:
             events = result.events
             next_cursor = result.next_cursor
 
-    # Add geometry summary to each event
-    for event in events:
-        event["geometry_summary"] = _geometry_summary(event.get("geometry"))
+    # Add table-only display fields (time_human, adapter_display, geometry_summary)
+    _decorate_table_events(events)
 
     return templates.TemplateResponse(
         request=request,

src/central/gui/templates/_event_rows/_default.html

@@ -0,0 +1,2 @@
+{# Fallback for adapters without a bespoke partial. No curated fields — the
+   full payload is shown in the "Data" block rendered by _events_rows.html. #}

src/central/gui/templates/_event_rows/eonet.html

@@ -0,0 +1,6 @@
+{# EONET natural-event tracker. Fields from payload->data->data. #}
+{% set d = (event.data.get('data') or {}).get('data') or {} %}
+{% if d.get('title') is not none %}<dt>Title</dt><dd>{{ d.title }}</dd>{% endif %}
+{% if d.get('category_id') is not none %}<dt>Category</dt><dd>{{ d.category_id }}</dd>{% endif %}
+{% if d.get('magnitudeValue') is not none %}<dt>Magnitude</dt><dd>{{ d.magnitudeValue }} {{ d.get('magnitudeUnit', '') }}</dd>{% endif %}
+{% if d.get('url') is not none %}<dt>Source</dt><dd><a href="{{ d.url }}" target="_blank" rel="noopener">{{ d.url }}</a></dd>{% endif %}

src/central/gui/templates/_event_rows/firms.html

@@ -0,0 +1,6 @@
+{# NASA FIRMS fire hotspots. Fields from payload->data->data. #}
+{% set d = (event.data.get('data') or {}).get('data') or {} %}
+{% if d.get('confidence') is not none %}<dt>Confidence</dt><dd>{{ d.confidence }}</dd>{% endif %}
+{% if d.get('frp') is not none %}<dt>FRP (MW)</dt><dd>{{ d.frp }}</dd>{% endif %}
+{% if d.get('bright_ti4') is not none %}<dt>Brightness (TI4)</dt><dd>{{ d.bright_ti4 }}</dd>{% endif %}
+{% if d.get('satellite') is not none %}<dt>Satellite</dt><dd>{{ d.satellite }}{% if d.get('daynight') is not none %} ({{ d.daynight }}){% endif %}</dd>{% endif %}

src/central/gui/templates/_event_rows/gdacs.html

@@ -0,0 +1,6 @@
+{# GDACS global disaster alerts. Fields from payload->data->data. #}
+{% set d = (event.data.get('data') or {}).get('data') or {} %}
+{% if d.get('title') is not none %}<dt>Title</dt><dd>{{ d.title }}</dd>{% endif %}
+{% if d.get('eventtype') is not none %}<dt>Event type</dt><dd>{{ d.eventtype }}</dd>{% endif %}
+{% if d.get('alertlevel') is not none %}<dt>Alert level</dt><dd>{{ d.alertlevel }}{% if d.get('alertscore') is not none %} ({{ d.alertscore }}){% endif %}</dd>{% endif %}
+{% if d.get('country') is not none %}<dt>Country</dt><dd>{{ d.country }}</dd>{% endif %}

src/central/gui/templates/_event_rows/inciweb.html

@@ -0,0 +1,5 @@
+{# NIFC InciWeb wildfire narrative. Fields from payload->data->data. #}
+{% set d = (event.data.get('data') or {}).get('data') or {} %}
+{% if d.get('title') is not none %}<dt>Title</dt><dd>{{ d.title }}</dd>{% endif %}
+{% if d.get('description') is not none %}<dt>Description</dt><dd>{{ d.description | truncate(200) }}</dd>{% endif %}
+{% if d.get('url') is not none %}<dt>Source</dt><dd><a href="{{ d.url }}" target="_blank" rel="noopener">{{ d.url }}</a></dd>{% endif %}

src/central/gui/templates/_event_rows/nwis.html

@@ -0,0 +1,6 @@
+{# USGS NWIS water observations. Fields from payload->data->data. #}
+{% set d = (event.data.get('data') or {}).get('data') or {} %}
+{% if d.get('parameter_code') is not none %}<dt>Parameter</dt><dd>{{ d.parameter_code }}</dd>{% endif %}
+{% if d.get('value') is not none %}<dt>Value</dt><dd>{{ d.value }} {{ d.get('unit_of_measure', '') }}</dd>{% endif %}
+{% if d.get('monitoring_location_id') is not none %}<dt>Site</dt><dd><code>{{ d.monitoring_location_id }}</code></dd>{% endif %}
+{% if d.get('statistic_id') is not none %}<dt>Statistic</dt><dd>{{ d.statistic_id }}</dd>{% endif %}

src/central/gui/templates/_event_rows/nws.html

@@ -0,0 +1,6 @@
+{# NWS weather alerts. Fields from payload->data->data. #}
+{% set d = (event.data.get('data') or {}).get('data') or {} %}
+{% if d.get('event') is not none %}<dt>Event</dt><dd>{{ d.event }}</dd>{% endif %}
+{% if d.get('severity') is not none %}<dt>Severity</dt><dd>{{ d.severity }}{% if d.get('certainty') is not none %} / {{ d.certainty }}{% endif %}</dd>{% endif %}
+{% if d.get('headline') is not none %}<dt>Headline</dt><dd>{{ d.headline }}</dd>{% endif %}
+{% if d.get('areaDesc') is not none %}<dt>Area</dt><dd>{{ d.areaDesc | truncate(200) }}</dd>{% endif %}

src/central/gui/templates/_event_rows/swpc_alerts.html

@@ -0,0 +1,5 @@
+{# NOAA SWPC space-weather alerts. Fields from payload->data->data. #}
+{% set d = (event.data.get('data') or {}).get('data') or {} %}
+{% if d.get('product_id') is not none %}<dt>Product</dt><dd><code>{{ d.product_id }}</code></dd>{% endif %}
+{% if d.get('issue_datetime') is not none %}<dt>Issued</dt><dd>{{ d.issue_datetime }}</dd>{% endif %}
+{% if d.get('message') is not none %}<dt>Message</dt><dd>{{ d.message | truncate(240) }}</dd>{% endif %}

src/central/gui/templates/_event_rows/swpc_kindex.html

@@ -0,0 +1,6 @@
+{# NOAA SWPC planetary K-index. Fields from payload->data->data. #}
+{% set d = (event.data.get('data') or {}).get('data') or {} %}
+{% if d.get('Kp') is not none %}<dt>Kp</dt><dd>{{ d.Kp }}</dd>{% endif %}
+{% if d.get('a_running') is not none %}<dt>A-running</dt><dd>{{ d.a_running }}</dd>{% endif %}
+{% if d.get('station_count') is not none %}<dt>Stations</dt><dd>{{ d.station_count }}</dd>{% endif %}
+{% if d.get('time_tag') is not none %}<dt>Time tag</dt><dd>{{ d.time_tag }}</dd>{% endif %}

src/central/gui/templates/_event_rows/swpc_protons.html

@@ -0,0 +1,6 @@
+{# NOAA SWPC GOES proton flux. Fields from payload->data->data. #}
+{% set d = (event.data.get('data') or {}).get('data') or {} %}
+{% if d.get('flux') is not none %}<dt>Flux</dt><dd>{{ d.flux }}</dd>{% endif %}
+{% if d.get('energy') is not none %}<dt>Energy</dt><dd>{{ d.energy }}</dd>{% endif %}
+{% if d.get('satellite') is not none %}<dt>Satellite</dt><dd>{{ d.satellite }}</dd>{% endif %}
+{% if d.get('time_tag') is not none %}<dt>Time tag</dt><dd>{{ d.time_tag }}</dd>{% endif %}

src/central/gui/templates/_event_rows/usgs_quake.html

@@ -0,0 +1,6 @@
+{# USGS earthquakes. Fields from payload->data->data. #}
+{% set d = (event.data.get('data') or {}).get('data') or {} %}
+{% if d.get('magnitude') is not none %}<dt>Magnitude</dt><dd>{{ d.magnitude }}{% if d.get('magType') is not none %} {{ d.magType }}{% endif %}</dd>{% endif %}
+{% if d.get('place') is not none %}<dt>Place</dt><dd>{{ d.place }}</dd>{% endif %}
+{% if d.get('depth') is not none %}<dt>Depth (km)</dt><dd>{{ d.depth }}</dd>{% endif %}
+{% if d.get('url') is not none %}<dt>Source</dt><dd><a href="{{ d.url }}" target="_blank" rel="noopener">{{ d.url }}</a></dd>{% endif %}

src/central/gui/templates/_event_rows/wfigs_incidents.html

@@ -0,0 +1,6 @@
+{# NIFC WFIGS wildfire incidents. Fields from payload->data->data. #}
+{% set d = (event.data.get('data') or {}).get('data') or {} %}
+{% if d.get('state') is not none %}<dt>State</dt><dd>{{ d.state }}</dd>{% endif %}
+{% if d.get('county') is not none %}<dt>County</dt><dd>{{ d.county }}</dd>{% endif %}
+{% if d.get('reason') is not none %}<dt>Reason</dt><dd>{{ d.reason }}</dd>{% endif %}
+{% if d.get('irwin_id') is not none %}<dt>IRWIN ID</dt><dd><code>{{ d.irwin_id }}</code></dd>{% endif %}

src/central/gui/templates/_event_rows/wfigs_perimeters.html

@@ -0,0 +1,6 @@
+{# NIFC WFIGS wildfire perimeters. Fields from payload->data->data. #}
+{% set d = (event.data.get('data') or {}).get('data') or {} %}
+{% if d.get('state') is not none %}<dt>State</dt><dd>{{ d.state }}</dd>{% endif %}
+{% if d.get('county') is not none %}<dt>County</dt><dd>{{ d.county }}</dd>{% endif %}
+{% if d.get('reason') is not none %}<dt>Reason</dt><dd>{{ d.reason }}</dd>{% endif %}
+{% if d.get('irwin_id') is not none %}<dt>IRWIN ID</dt><dd><code>{{ d.irwin_id }}</code></dd>{% endif %}

src/central/gui/templates/_event_summaries/_default.html

@@ -0,0 +1,2 @@
+{# No per-adapter summary; the Subject cell falls back to "—" and the map
+   popup omits the subject line. #}

src/central/gui/templates/_event_summaries/eonet.html

@@ -0,0 +1,2 @@
+{% set d = (event.data.get('data') or {}).get('data') or {} %}
+{%- if d.get('title') %}{{ d.title }}{% endif -%}

src/central/gui/templates/_event_summaries/firms.html

@@ -0,0 +1,2 @@
+{% set d = (event.data.get('data') or {}).get('data') or {} %}
+{%- if d.get('frp') is not none or d.get('confidence') %}Fire detected{% if d.get('frp') is not none %} — {{ d.frp }} MW radiative power{% endif %}{% if d.get('confidence') == 'high' %} (high confidence){% endif %}{% endif -%}

src/central/gui/templates/_event_summaries/gdacs.html

@@ -0,0 +1,2 @@
+{% set d = (event.data.get('data') or {}).get('data') or {} %}
+{%- if d.get('title') %}{{ d.title }}{% endif %}{% if d.get('alertlevel') %} — {{ d.alertlevel }} alert{% endif -%}

src/central/gui/templates/_event_summaries/inciweb.html

@@ -0,0 +1,2 @@
+{% set d = (event.data.get('data') or {}).get('data') or {} %}
+{%- if d.get('title') %}{{ d.title }}{% endif -%}

src/central/gui/templates/_event_summaries/nwis.html

@@ -0,0 +1,2 @@
+{% set d = (event.data.get('data') or {}).get('data') or {} %}
+{%- if d.get('value') is not none %}Water reading: {{ d.value }}{% if d.get('unit_of_measure') %} {{ d.unit_of_measure }}{% endif %}{% endif -%}

src/central/gui/templates/_event_summaries/nws.html

@@ -0,0 +1,2 @@
+{% set d = (event.data.get('data') or {}).get('data') or {} %}
+{%- if d.get('event') %}{{ d.event }}{% endif %}{% if d.get('severity') %} — {{ d.severity }}{% endif -%}

src/central/gui/templates/_event_summaries/swpc_alerts.html

@@ -0,0 +1,2 @@
+{% set d = (event.data.get('data') or {}).get('data') or {} %}
+{%- if d.get('product_id') or d.get('message') %}Space weather alert{% if d.get('product_id') %} {{ d.product_id }}{% endif %}{% if d.get('message') %}: {{ d.message | replace('\r', ' ') | replace('\n', ' ') | truncate(80) }}{% endif %}{% endif -%}

src/central/gui/templates/_event_summaries/swpc_kindex.html

@@ -0,0 +1,2 @@
+{% set d = (event.data.get('data') or {}).get('data') or {} %}
+{%- if d.get('Kp') is not none %}Geomagnetic activity (Kp index): {{ d.Kp }}{% endif -%}

src/central/gui/templates/_event_summaries/swpc_protons.html

@@ -0,0 +1,2 @@
+{% set d = (event.data.get('data') or {}).get('data') or {} %}
+{%- if d.get('flux') is not none %}Solar proton flux: {{ d.flux | round(2) }} pfu{% if d.get('energy') %} at {{ d.energy }}{% endif %}{% endif -%}

src/central/gui/templates/_event_summaries/usgs_quake.html

@@ -0,0 +1,2 @@
+{% set d = (event.data.get('data') or {}).get('data') or {} %}
+{%- if d.get('magnitude') is not none %}Magnitude {{ d.magnitude | round(1) }}{% if d.get('place') %} — {{ d.place }}{% endif %}{% endif -%}

src/central/gui/templates/_event_summaries/wfigs_incidents.html

@@ -0,0 +1,2 @@
+{% set d = (event.data.get('data') or {}).get('data') or {} %}
+{%- if d.get('county') or d.get('state') %}Wildfire incident — {% if d.get('county') %}{{ d.county }}{% if d.get('state') %}, {% endif %}{% endif %}{% if d.get('state') %}{{ d.state }}{% endif %}{% endif -%}

src/central/gui/templates/_event_summaries/wfigs_perimeters.html

@@ -0,0 +1,2 @@
+{% set d = (event.data.get('data') or {}).get('data') or {} %}
+{%- if d.get('county') or d.get('state') %}Wildfire perimeter — {% if d.get('county') %}{{ d.county }}{% if d.get('state') %}, {% endif %}{% endif %}{% if d.get('state') %}{{ d.state }}{% endif %}{% endif -%}

src/central/gui/templates/_events_rows.html

@@ -10,30 +10,40 @@
         <tr>
             <th style="width: 2rem;"></th>
             <th>Time</th>
-            <th>Adapter</th>
-            <th>Category</th>
-            <th>Geometry</th>
+            <th>Location</th>
             <th>Subject</th>
+            <th>Adapter</th>
         </tr>
     </thead>
     <tbody>
         {% for event in events %}
+        {# Per-adapter one-line summary, dispatched by adapter name with a generic
+           fallback (no hardcoded list). Captured once so it serves both the
+           Subject cell and the map popup (via data-subject). #}
+        {% set subject_summary %}{% include ["_event_summaries/" ~ event.adapter ~ ".html", "_event_summaries/_default.html"] %}{% endset %}
+        {# Location: generic _enriched.geocoder reader, then top-level named
+           fields, then coordinates. No adapter-specific logic. #}
+        {% set d = (event.data.get('data') or {}).get('data') or {} %}
+        {% set gc = (d.get('_enriched') or {}).get('geocoder') or {} %}
+        {% set loc_local = gc.get('city') or d.get('city') or gc.get('county') or d.get('county') %}
+        {% set loc_state = gc.get('state') or d.get('state') %}
+        {% set loc_country = gc.get('country') or d.get('country') %}
+        {% set loc_parts = [loc_local, loc_state, loc_country] | select | list %}
         <tr class="event-row" data-row-idx="{{ loop.index0 }}"
             data-event-id="{{ event.id }}"
             data-adapter="{{ event.adapter }}"
             data-category="{{ event.category }}"
             data-time="{{ event.time }}"
-            data-subject="{{ event.subject or '' }}"
+            data-subject="{{ subject_summary | trim }}"
             {% if event.geometry %}data-geometry='{{ event.geometry | tojson }}'{% endif %}>
             <td><button type="button" class="expand-row" aria-label="Expand">&#9656;</button></td>
-            <td>{{ event.time }}</td>
-            <td>{{ event.adapter }}</td>
-            <td>{{ event.category }}</td>
-            <td>{{ event.geometry_summary }}</td>
-            <td>{{ event.subject or '—' }}</td>
+            <td title="{{ event.time }}">{{ event.time_human }}</td>
+            <td>{% if loc_parts %}{{ loc_parts | join(', ') }}{% elif gc.get('landclass') %}{{ gc.landclass }}{% else %}—{% endif %}</td>
+            <td>{{ subject_summary | trim or '—' }}</td>
+            <td>{{ event.adapter_display }}</td>
         </tr>
         <tr class="event-detail" hidden>
-            <td colspan="6">
+            <td colspan="5">
                 <dl class="event-detail-list">
                     <dt>Event ID</dt>
                     <dd><code>{{ event.id }}</code></dd>
@@ -43,6 +53,11 @@
                     <dt>Regions</dt>
                     <dd>{{ event.regions | join(", ") }}</dd>
                     {% endif %}
+                    {# Per-adapter curated fields. Dispatch by adapter name with a
+                       generic fallback; the chosen template is whichever exists
+                       first, so new adapters fall through to _default.html with
+                       no hardcoded adapter list here. #}
+                    {% include ["_event_rows/" ~ event.adapter ~ ".html", "_event_rows/_default.html"] %}
                     <dt>Data</dt>
                     <dd><pre class="event-data-pre">{{ event.data | tojson(indent=2) }}</pre></dd>
                 </dl>

src/central/gui/templates/events_list.html

@@ -18,7 +18,8 @@
     }
     .map-legend {
         display: flex;
-        gap: 1rem;
+        flex-wrap: wrap;
+        gap: 0.5rem 1rem;
         font-size: 0.85rem;
     }
     .map-legend-item {
@@ -105,6 +106,12 @@
 {% endblock %}
 
 {% block content %}
+{# 12-slot legend/marker palette. Adapters map to colors by their sorted index
+   (loop.index0 % palette length) — no per-adapter color is hardcoded. #}
+{% set palette = [
+    "#f59e0b", "#dc2626", "#7c3aed", "#2563eb", "#059669", "#db2777",
+    "#0891b2", "#65a30d", "#ea580c", "#4f46e5", "#9333ea", "#0d9488"
+] %}
 <h1>Events</h1>
 
 {% if filter_error %}
@@ -123,9 +130,9 @@
                 <label for="adapter">Adapter</label>
                 <select id="adapter" name="adapter">
                     <option value="">All</option>
-                    <option value="nws" {% if filter_values.adapter == 'nws' %}selected{% endif %}>nws</option>
-                    <option value="firms" {% if filter_values.adapter == 'firms' %}selected{% endif %}>firms</option>
-                    <option value="usgs_quake" {% if filter_values.adapter == 'usgs_quake' %}selected{% endif %}>usgs_quake</option>
+                    {% for a in adapters %}
+                    <option value="{{ a.name }}" {% if filter_values.adapter == a.name %}selected{% endif %}>{{ a.display_name }}</option>
+                    {% endfor %}
                 </select>
             </div>
             <div>
@@ -163,18 +170,12 @@
 <div id="events-map"></div>
 <div class="map-controls">
     <div class="map-legend">
+        {% for a in adapters %}
         <div class="map-legend-item">
-            <div class="map-legend-swatch" style="background-color: #f59e0b;"></div>
-            <span>NWS (Weather)</span>
-        </div>
-        <div class="map-legend-item">
-            <div class="map-legend-swatch" style="background-color: #dc2626;"></div>
-            <span>FIRMS (Fire)</span>
-        </div>
-        <div class="map-legend-item">
-            <div class="map-legend-swatch" style="background-color: #7c3aed;"></div>
-            <span>USGS (Quake)</span>
+            <div class="map-legend-swatch" style="background-color: {{ palette[loop.index0 % palette|length] }};"></div>
+            <span>{{ a.display_name }}</span>
         </div>
+        {% endfor %}
     </div>
     <button type="button" id="fit-to-results" class="outline secondary">Fit map to results</button>
 </div>
@@ -189,17 +190,57 @@
     var tileUrl = {{ tile_url | tojson }};
     var tileAttr = {{ tile_attribution | tojson }};
 
-    // Adapter color mapping
+    // Adapter color mapping — built from the registry-derived adapter list and
+    // the same palette the legend uses, keyed by sorted index. No adapter name
+    // or color is hardcoded here.
+    var PALETTE = {{ palette | tojson }};
     var ADAPTER_COLORS = {
-        "nws":        "#f59e0b",
-        "firms":      "#dc2626",
-        "usgs_quake": "#7c3aed"
+        {% for a in adapters %}{{ a.name | tojson }}: PALETTE[{{ loop.index0 }} % PALETTE.length]{{ "," if not loop.last }}
+        {% endfor %}
     };
 
     function getAdapterColor(adapter) {
         return ADAPTER_COLORS[adapter] || "#3388ff";
     }
 
+    // Flatten arbitrarily-nested GeoJSON coordinates into a flat [lng, lat] list.
+    function flattenCoords(coords, out) {
+        if (coords.length && typeof coords[0] === "number") {
+            out.push(coords);
+            return;
+        }
+        for (var i = 0; i < coords.length; i++) {
+            flattenCoords(coords[i], out);
+        }
+    }
+
+    // A geometry whose vertices all collapse to a single point (zero extent in
+    // both dimensions). Enrichment stores some point-like sources as degenerate
+    // polygons; Leaflet would draw these invisibly, so we plot a marker instead.
+    function isDegenerate(geom) {
+        if (!geom || !geom.coordinates) return false;
+        var pts = [];
+        flattenCoords(geom.coordinates, pts);
+        if (pts.length === 0) return false;
+        var minX = pts[0][0], maxX = pts[0][0], minY = pts[0][1], maxY = pts[0][1];
+        for (var i = 1; i < pts.length; i++) {
+            if (pts[i][0] < minX) minX = pts[i][0];
+            if (pts[i][0] > maxX) maxX = pts[i][0];
+            if (pts[i][1] < minY) minY = pts[i][1];
+            if (pts[i][1] > maxY) maxY = pts[i][1];
+        }
+        return (maxX - minX) < 1e-9 && (maxY - minY) < 1e-9;
+    }
+
+    // Mean of all vertices, returned as Leaflet [lat, lng].
+    function centroidLatLng(geom) {
+        var pts = [];
+        flattenCoords(geom.coordinates, pts);
+        var sx = 0, sy = 0;
+        for (var i = 0; i < pts.length; i++) { sx += pts[i][0]; sy += pts[i][1]; }
+        return [sy / pts.length, sx / pts.length];
+    }
+
     // Initialize map
     var map = L.map("events-map").setView([39, -98], 4);
 
@@ -275,23 +316,33 @@
                 var adapter = row.dataset.adapter || "";
                 var color = getAdapterColor(adapter);
 
-                var layer = L.geoJSON(geom, {
-                    style: {
-                        color: color,
-                        weight: 2,
-                        fillColor: color,
-                        fillOpacity: 0.25
-                    },
-                    pointToLayer: function(feature, latlng) {
-                        return L.circleMarker(latlng, {
-                            radius: 8,
+                var markerStyle = {
+                    radius: 8,
+                    color: color,
+                    weight: 2,
+                    fillColor: color,
+                    fillOpacity: 0.25
+                };
+
+                // Real polygons/lines render as geometry; zero-extent geometries
+                // (degenerate polygons from enrichment) render as a point marker
+                // so every non-null geometry is actually visible on the map.
+                var layer;
+                if (isDegenerate(geom)) {
+                    layer = L.circleMarker(centroidLatLng(geom), markerStyle);
+                } else {
+                    layer = L.geoJSON(geom, {
+                        style: {
                             color: color,
                             weight: 2,
                             fillColor: color,
                             fillOpacity: 0.25
-                        });
-                    }
-                });
+                        },
+                        pointToLayer: function(feature, latlng) {
+                            return L.circleMarker(latlng, markerStyle);
+                        }
+                    });
+                }
 
                 layer.bindPopup(buildPopup(row));
                 layer.on("click", function() {
@@ -414,17 +465,80 @@
     // Fit to results button
     document.getElementById("fit-to-results").addEventListener("click", fitToAllLayers);
 
+    // Client-side sort of the displayed rows; state persists across HTMX swaps.
+    var sortState = { col: null, dir: 1 };  // dir: 1 asc, -1 desc
+
+    function sortKey(row, col) {
+        // Time sorts on the ISO timestamp for true chronological order.
+        if (col === 1) return row.dataset.time || "";
+        var cell = row.children[col];
+        return cell ? cell.textContent.trim().toLowerCase() : "";
+    }
+
+    function applySort() {
+        if (sortState.col === null) return;
+        var tbody = document.querySelector("#events-rows table.events-table tbody");
+        if (!tbody) return;
+        var pairs = [];
+        tbody.querySelectorAll("tr.event-row").forEach(function(r) {
+            pairs.push([r, r.nextElementSibling]);  // main row + its detail row
+        });
+        // Array.prototype.sort is stable (ES2019+), so equal keys keep order.
+        pairs.sort(function(a, b) {
+            var ka = sortKey(a[0], sortState.col), kb = sortKey(b[0], sortState.col);
+            if (ka < kb) return -sortState.dir;
+            if (ka > kb) return sortState.dir;
+            return 0;
+        });
+        pairs.forEach(function(p) {
+            tbody.appendChild(p[0]);
+            if (p[1]) tbody.appendChild(p[1]);
+        });
+    }
+
+    function updateSortIndicators(ths) {
+        ths.forEach(function(th, idx) {
+            th.querySelectorAll(".sort-ind").forEach(function(s) { s.remove(); });
+            if (idx === sortState.col) {
+                var s = document.createElement("span");
+                s.className = "sort-ind";
+                s.textContent = sortState.dir === 1 ? " ▲" : " ▼";
+                th.appendChild(s);
+            }
+        });
+    }
+
+    function bindSortHandlers() {
+        var ths = document.querySelectorAll("#events-rows table.events-table thead th");
+        ths.forEach(function(th, idx) {
+            if (idx === 0) return;  // expand column is not sortable
+            th.style.cursor = "pointer";
+            th.onclick = function() {
+                if (sortState.col === idx) { sortState.dir *= -1; }
+                else { sortState.col = idx; sortState.dir = 1; }
+                updateSortIndicators(ths);
+                applySort();
+            };
+        });
+        updateSortIndicators(ths);
+    }
+
     // Initial load - bind layers and fit bounds
     rebindEventLayers(); // Initial load only
+    bindSortHandlers();
     if (false) { // DISABLED: map never auto-fits
         fitToAllLayers();
         isInitialLoad = false;
     }
 
-    // Re-bind layers after HTMX swap (but do NOT fit bounds)
+    // Re-bind layers after HTMX swap so the map tracks the current (filtered /
+    // paginated) result set. Viewport is preserved — we never auto-fit here.
     document.body.addEventListener("htmx:afterSwap", function(evt) {
         if (evt.detail.target.id === "events-rows") {
-            // rebindEventLayers(); // DISABLED: map shows all events, only table filters
+            rebindEventLayers();
+            // Re-bind sort handlers to the new rows and re-apply the active sort.
+            bindSortHandlers();
+            applySort();
             // Do NOT call fitToAllLayers - preserve user viewport
         }
     });

src/central/supervisor.py

@@ -76,9 +76,12 @@ async def apply_enrichment(
 
     No-op when the adapter declares no enrichment_locations or no enrichers
     are registered. Uses the first (lat_path, lon_path) tuple that resolves to
-    a non-null coordinate pair in event.data. Each enricher's result is keyed
-    by enricher.name. Mutates the data dict in place (Event is frozen, but its
-    data dict is not — this avoids a model_copy on every published event).
+    a non-null coordinate pair in event.data. If no declared pair resolves to
+    coordinates, still attaches an all-null bundle so that every event from an
+    enriched adapter carries _enriched (consumers get a stable field set).
+    Each enricher's result is keyed by enricher.name. Mutates the data dict in
+    place (Event is frozen, but its data dict is not — this avoids a
+    model_copy on every published event).
     """
     if not enrichment_locations or not enrichers:
         return
@@ -93,6 +96,15 @@ async def apply_enrichment(
             enriched[enricher.name] = await enricher.enrich(location)
         event.data["_enriched"] = enriched
         return
+    # No declared pair resolved to coordinates. Still attach _enriched: each
+    # enricher resolves the null location to its own all-null bundle (per the
+    # never-raise contract), so coordless events (e.g. removal tombstones)
+    # carry the same shape as enriched ones.
+    null_location = {"lat": None, "lon": None}
+    enriched = {}
+    for enricher in enrichers:
+        enriched[enricher.name] = await enricher.enrich(null_location)
+    event.data["_enriched"] = enriched
 
 # Stream subject mappings -- derived from the registry; every stream is included
 # (META too: supervisor must create it in JetStream even though archive skips it).

tests/test_apply_enrichment_coordless.py

@@ -0,0 +1,78 @@
+"""Regression tests for apply_enrichment's coordless path.
+
+Design principle: every event from an adapter that declares enrichment_locations
+must carry data["_enriched"] — populated when coordinates resolve, an all-null
+bundle when they don't (e.g. removal tombstones with no lat/lon). Adapters that
+declare no enrichment_locations are still skipped entirely.
+"""
+
+from datetime import datetime, timezone
+from typing import Any
+
+import pytest
+
+from central.config_models import EnrichmentConfig
+from central.enrichment.cache import EnrichmentCache
+from central.enrichment.geocoder import GeocoderEnricher, all_null_bundle
+from central.models import Event, Geo
+from central.supervisor import apply_enrichment, build_enrichers
+
+
+def _make_event(data: dict[str, Any]) -> Event:
+    return Event(
+        id="evt-1",
+        adapter="usgs_quake",
+        category="quake.event.test",
+        time=datetime(2026, 1, 1, tzinfo=timezone.utc),
+        geo=Geo(),
+        data=data,
+    )
+
+
+class _PopulatingBackend:
+    """Deterministic backend that resolves any real coords to a fixed place."""
+
+    async def reverse(self, lat: float, lon: float) -> dict[str, Any]:
+        return {**all_null_bundle(), "city": "Boise", "state": "ID"}
+
+
+@pytest.mark.asyncio
+async def test_coordless_event_with_declared_locations_gets_null_bundle(tmp_path):
+    """An event whose declared coord paths are all None still gets _enriched."""
+    cache = EnrichmentCache(tmp_path / "enrichment_cache.db")
+    enrichers = build_enrichers(EnrichmentConfig(), cache)
+    event = _make_event(
+        {"latitude": None, "longitude": None, "reason": "fallen_off_current_service"}
+    )
+    assert "_enriched" not in event.data
+
+    await apply_enrichment(event, [("latitude", "longitude")], enrichers)
+
+    assert event.data["_enriched"]["geocoder"] == all_null_bundle()
+
+
+@pytest.mark.asyncio
+async def test_event_with_coords_still_enriches_normally(tmp_path):
+    """The coord-bearing path is unchanged: the backend is consulted and its
+    resolved fields land in the bundle."""
+    cache = EnrichmentCache(tmp_path / "enrichment_cache.db")
+    enricher = GeocoderEnricher(_PopulatingBackend(), cache=cache)
+    event = _make_event({"latitude": 43.0, "longitude": -116.0})
+
+    await apply_enrichment(event, [("latitude", "longitude")], [enricher])
+
+    bundle = event.data["_enriched"]["geocoder"]
+    assert bundle["state"] == "ID"
+    assert bundle["city"] == "Boise"
+
+
+@pytest.mark.asyncio
+async def test_adapter_with_no_enrichment_locations_still_skipped(tmp_path):
+    """Adapters declaring no enrichment_locations are skipped — no _enriched."""
+    cache = EnrichmentCache(tmp_path / "enrichment_cache.db")
+    enrichers = build_enrichers(EnrichmentConfig(), cache)
+    event = _make_event({"latitude": 43.0, "longitude": -116.0})
+
+    await apply_enrichment(event, [], enrichers)
+
+    assert "_enriched" not in event.data

tests/test_enrichment_locations_coverage.py

@@ -0,0 +1,110 @@
+"""Coverage tests for adapter enrichment_locations declarations (PR L-a).
+
+Every adapter must make a conscious enrichment_locations declaration — a
+non-empty [(lat_field, lon_field)] for point adapters, or an explicit [] for
+adapters with no point coordinate. Registry-derived (iterates
+discover_adapters()), no hardcoded adapter lists.
+
+Plus synthetic-event tests for the two adapters with isolated event builders
+(usgs_quake._feature_to_event, nwis._build_event) proving the declared
+latitude/longitude paths actually resolve on event.data. The four inline-build
+point adapters (eonet, gdacs, wfigs_incidents, inciweb) construct events only
+inside poll() and are covered by the live end-to-end smoke instead.
+"""
+
+from datetime import datetime, timezone
+from pathlib import Path
+from unittest.mock import MagicMock
+
+from central.adapter_discovery import discover_adapters
+from central.config_models import AdapterConfig
+
+
+def test_every_adapter_explicitly_declares_enrichment_locations():
+    """Each adapter declares enrichment_locations in its OWN class body (not
+    just inheriting the SourceAdapter default) — a conscious choice per adapter."""
+    missing = [
+        name for name, cls in discover_adapters().items()
+        if "enrichment_locations" not in cls.__dict__
+    ]
+    assert not missing, f"adapters missing an explicit enrichment_locations: {missing}"
+
+
+def test_enrichment_locations_shape_is_valid():
+    """Each declaration is a list of (str, str) tuples (possibly empty)."""
+    for name, cls in discover_adapters().items():
+        locs = cls.enrichment_locations
+        assert isinstance(locs, list), f"{name}: not a list"
+        for tup in locs:
+            assert isinstance(tup, tuple) and len(tup) == 2, f"{name}: bad tuple {tup!r}"
+            assert all(isinstance(p, str) for p in tup), f"{name}: non-str path {tup!r}"
+
+
+def test_point_adapters_use_canonical_lat_lon_paths():
+    """Every point adapter (non-empty declaration) uses the same protocol keys
+    ('latitude', 'longitude') — the convention FIRMS established."""
+    for name, cls in discover_adapters().items():
+        if cls.enrichment_locations:
+            assert cls.enrichment_locations == [("latitude", "longitude")], (
+                f"{name} uses non-canonical paths: {cls.enrichment_locations}"
+            )
+
+
+def test_at_least_the_known_point_adapters_are_non_empty():
+    """Registry-derived sanity: the adapters that carry a point coordinate have
+    a non-empty declaration. Derived by probing enrichment_locations, not a
+    hardcoded list — guards against a regression that blanks them all."""
+    non_empty = {
+        name for name, cls in discover_adapters().items() if cls.enrichment_locations
+    }
+    # firms is the original; there must be several point adapters now.
+    assert "firms" in non_empty
+    assert len(non_empty) >= 5, f"expected several point adapters, got {sorted(non_empty)}"
+
+
+# --- synthetic-event tests for the two isolated builders --------------------
+
+def test_usgs_quake_event_exposes_top_level_latlon():
+    from central.adapters.usgs_quake import USGSQuakeAdapter
+
+    config = AdapterConfig(
+        name="usgs_quake", enabled=True, cadence_s=60,
+        settings={}, updated_at=datetime.now(timezone.utc),
+    )
+    adapter = USGSQuakeAdapter(config, MagicMock(), Path("/tmp/never_used.db"))
+    feature = {
+        "type": "Feature", "id": "test_q1",
+        "properties": {"mag": 2.5, "place": "X", "time": 1715000000000,
+                       "updated": 1715000000000},
+        "geometry": {"type": "Point", "coordinates": [-116.2, 43.7, 10.5]},
+    }
+    event = adapter._feature_to_event(feature)
+    assert event is not None
+    assert event.data["latitude"] == 43.7
+    assert event.data["longitude"] == -116.2
+
+
+def test_nwis_event_mirrors_centroid_into_data():
+    from central.adapters.nwis import NWISAdapter
+
+    config = AdapterConfig(
+        name="nwis", enabled=True, cadence_s=900,
+        settings={}, updated_at=datetime.now(timezone.utc),
+    )
+    adapter = NWISAdapter(config, MagicMock(), Path("/tmp/never_used.db"))
+    feature = {
+        "geometry": {"type": "Point", "coordinates": [-90.25, 41.78]},  # (lon, lat)
+        "properties": {
+            "monitoring_location_id": "USGS-05420500",
+            "time": "2026-05-20T00:00:00Z",
+            "value": "123.0",
+            "unit_of_measure": "ft",
+        },
+    }
+    event = adapter._build_event(feature, "00060")
+    assert event is not None
+    # latitude = centroid[1], longitude = centroid[0]; no axis swap.
+    assert event.data["latitude"] == 41.78
+    assert event.data["longitude"] == -90.25
+    # Geo.centroid retained for existing rendering uses.
+    assert event.geo.centroid == (-90.25, 41.78)

tests/test_events_feed_frontend.py

@@ -684,3 +684,404 @@ class TestEventRowDataAttributes:
         assert context["events"][0]["adapter"] == "usgs_quake"
         assert context["events"][0]["category"] == "quake.event"
         assert context["events"][0]["subject"] == "M4.2 Earthquake"
+
+
+# --- PR L-b: operator /events tab polish ---------------------------------
+
+
+def _events_context(events):
+    """Minimal context for rendering _events_rows.html as a standalone fragment."""
+    return {
+        "events": events,
+        "next_cursor": None,
+        "filter_error": None,
+        "filter_values": {
+            "adapter": "", "category": "", "since": "", "until": "",
+            "region_north": "", "region_south": "", "region_east": "",
+            "region_west": "", "limit": "50",
+        },
+    }
+
+
+def _event(adapter, inner=None, geometry=None):
+    """Build an event dict matching _fetch_events output shape.
+
+    `inner` populates payload->data->data (the adapter-specific payload) at
+    event["data"]["data"]["data"], which the per-adapter partials read.
+    """
+    return {
+        "id": "evt-" + adapter,
+        "time": "2026-05-17T12:00:00+00:00",
+        "received": "2026-05-17T12:00:00+00:00",
+        "adapter": adapter,
+        "category": adapter + ".test",
+        "subject": "subject",
+        "geometry": geometry,
+        "geometry_summary": "",
+        "data": {"data": {"data": inner or {}}},
+        "regions": [],
+    }
+
+
+def _render_rows(events):
+    """Render _events_rows.html through the real Jinja environment."""
+    from central.gui import templates as gui_templates
+    return gui_templates.env.get_template("_events_rows.html").render(
+        **_events_context(events)
+    )
+
+
+class TestRegistryDrivenAdapterFilter:
+    """(A) Adapter filter <select> is driven by discover_adapters(), no hardcoded list."""
+
+    @pytest.mark.asyncio
+    async def test_filter_options_cover_every_discovered_adapter(self):
+        from central.adapter_discovery import discover_adapters
+        registry = discover_adapters()
+
+        mock_request = MagicMock()
+        mock_request.state.operator = MagicMock(id=1, username="admin")
+        mock_request.state.csrf_token = "test_csrf"
+        mock_request.query_params = {}
+
+        mock_conn = AsyncMock()
+        mock_conn.fetch.return_value = []
+        mock_conn.fetchrow.return_value = {
+            "map_tile_url": "https://tile.openstreetmap.org/{z}/{x}/{y}.png",
+            "map_attribution": "OpenStreetMap",
+        }
+        mock_pool = MagicMock()
+        mock_pool.acquire.return_value.__aenter__ = AsyncMock(return_value=mock_conn)
+        mock_pool.acquire.return_value.__aexit__ = AsyncMock(return_value=None)
+
+        mock_templates = MagicMock()
+        mock_templates.TemplateResponse.return_value = MagicMock(status_code=200)
+
+        with patch("central.gui.routes._get_templates", return_value=mock_templates):
+            with patch("central.gui.routes.get_pool", return_value=mock_pool):
+                await events_list(mock_request)
+
+        context = mock_templates.TemplateResponse.call_args.kwargs.get("context")
+
+        # The list is exactly the registry, sorted by name (stable), no extras.
+        assert [a["name"] for a in context["adapters"]] == sorted(registry.keys())
+        # Each entry carries name + display_name straight from the adapter class.
+        for cls in registry.values():
+            assert {"name": cls.name, "display_name": cls.display_name} in context["adapters"]
+
+
+class TestPerAdapterRowPartials:
+    """(C) Per-adapter row partials with registry-derived dispatch + _default fallback."""
+
+    def test_every_discovered_adapter_has_a_partial(self):
+        from central.adapter_discovery import discover_adapters
+        from central.gui import templates as gui_templates
+        # get_template raises TemplateNotFound if a per-adapter file is missing.
+        for name in discover_adapters():
+            gui_templates.env.get_template("_event_rows/%s.html" % name)
+
+    def test_default_fallback_partial_exists(self):
+        from central.gui import templates as gui_templates
+        gui_templates.env.get_template("_event_rows/_default.html")
+
+    def test_every_discovered_adapter_renders_without_error(self):
+        from central.adapter_discovery import discover_adapters
+        for name in discover_adapters():
+            html = _render_rows([_event(name)])
+            assert 'data-adapter="%s"' % name in html
+
+    def test_unknown_adapter_falls_back_to_default(self):
+        # No bespoke partial -> dispatch resolves to _default.html (no crash),
+        # and the raw payload block is still rendered.
+        html = _render_rows([_event("not_a_real_adapter", inner={"foo": "bar"})])
+        assert 'data-adapter="not_a_real_adapter"' in html
+        assert "event-data-pre" in html
+
+    def test_usgs_quake_partial_surfaces_curated_fields(self):
+        html = _render_rows([_event(
+            "usgs_quake",
+            inner={"magnitude": 4.2, "magType": "mb", "place": "10km N of Town", "depth": 5.0},
+        )])
+        assert "Magnitude" in html
+        assert "4.2" in html
+        assert "10km N of Town" in html
+
+    def test_nws_partial_surfaces_curated_fields(self):
+        html = _render_rows([_event(
+            "nws",
+            inner={"event": "Tornado Warning", "headline": "TORNADO", "severity": "Extreme"},
+        )])
+        assert "Tornado Warning" in html
+        assert "Extreme" in html
+
+
+class TestMapAllAdapterGeometry:
+    """(B) Every non-null geometry reaches the map; rebind-on-swap is enabled."""
+
+    def test_polygon_geometry_emitted_as_data_geometry(self):
+        poly = {
+            "type": "Polygon",
+            "coordinates": [[[-104.18, 37.14], [-103.66, 37.14],
+                             [-103.66, 37.43], [-104.18, 37.43], [-104.18, 37.14]]],
+        }
+        html = _render_rows([_event("nws", inner={"event": "x"}, geometry=poly)])
+        assert "data-geometry=" in html
+        assert "Polygon" in html
+
+    def test_event_without_geometry_omits_data_geometry(self):
+        html = _render_rows([_event("swpc_protons", inner={"flux": 1.0})])
+        assert "data-geometry=" not in html
+
+    def test_map_rebinds_on_swap_and_handles_degenerate_geometry(self):
+        # Regression guard for the NWIS-only map: rebind must fire on HTMX swap
+        # and the degenerate-geometry fallback must exist.
+        import pathlib
+        from central.gui import templates as gui_templates
+        src = pathlib.Path(
+            gui_templates.env.loader.searchpath[0], "events_list.html"
+        ).read_text()
+        assert "// rebindEventLayers(); // DISABLED" not in src
+        assert "isDegenerate" in src
+
+
+# --- PR L-c: readable Time / Location / Subject / Adapter columns ---------
+
+
+def _first_row_cells(html):
+    """Visible <td> text of the first event-row (before its detail row).
+
+    Splits on the detail row's class attribute (not the bare string
+    'event-detail', which also appears in the page's <style> block).
+    """
+    import re
+    body = html.split('class="event-detail"')[0]
+    return [
+        re.sub(r"<[^>]+>", "", c).strip()
+        for c in re.findall(r"<td[^>]*>(.*?)</td>", body, re.S)
+    ]
+
+
+class TestEventTimeFormat:
+    """(A) Server-side 'MM-DD-YYYY HH:MM UTC' formatting (24h, no seconds)."""
+
+    def test_format_basic_utc(self):
+        from central.gui.routes import _format_event_time
+        assert _format_event_time("2026-05-21T06:00:00+00:00") == "05-21-2026 06:00 UTC"
+
+    def test_format_converts_offset_to_utc(self):
+        from central.gui.routes import _format_event_time
+        # 19:30 at -06:00 is 01:30 UTC the next day.
+        assert _format_event_time("2026-05-20T19:30:00-06:00") == "05-21-2026 01:30 UTC"
+
+    def test_format_empty_and_none(self):
+        from central.gui.routes import _format_event_time
+        assert _format_event_time("") == ""
+        assert _format_event_time(None) == ""
+
+    def test_format_no_seconds_no_offset_suffix(self):
+        from central.gui.routes import _format_event_time
+        out = _format_event_time("2026-01-02T03:04:59+00:00")
+        assert out == "01-02-2026 03:04 UTC"
+        assert ":59" not in out and "+00" not in out
+
+
+class TestTableDisplayDecoration:
+    """(A)/(D) _decorate_table_events adds display fields; /events.json unaffected."""
+
+    def test_adapter_display_matches_registry(self):
+        from central.adapter_discovery import discover_adapters
+        from central.gui.routes import _decorate_table_events, _format_event_time
+        registry = discover_adapters()
+        events = [_event(name) for name in registry]
+        _decorate_table_events(events)
+        for ev in events:
+            cls = registry[ev["adapter"]]
+            assert ev["adapter_display"] == cls.display_name
+            assert ev["time_human"] == _format_event_time(ev["time"])
+
+    def test_unknown_adapter_display_falls_back_to_name(self):
+        from central.gui.routes import _decorate_table_events
+        events = [_event("not_a_real_adapter")]
+        _decorate_table_events(events)
+        assert events[0]["adapter_display"] == "not_a_real_adapter"
+
+    @pytest.mark.asyncio
+    async def test_events_json_has_no_table_only_fields(self):
+        # No /events.json schema change: display fields must not leak into JSON.
+        mock_request = MagicMock()
+        mock_request.state.operator = MagicMock(id=1, username="admin")
+        mock_request.query_params = {}
+
+        mock_conn = AsyncMock()
+        mock_conn.fetch.return_value = [{
+            "id": "e1",
+            "time": datetime(2026, 5, 21, 6, 0, tzinfo=timezone.utc),
+            "received": datetime(2026, 5, 21, 6, 0, tzinfo=timezone.utc),
+            "adapter": "nwis",
+            "category": "hydro",
+            "subject": None,
+            "geometry": None,
+            "data": {},
+            "regions": [],
+        }]
+        mock_pool = MagicMock()
+        mock_pool.acquire.return_value.__aenter__ = AsyncMock(return_value=mock_conn)
+        mock_pool.acquire.return_value.__aexit__ = AsyncMock(return_value=None)
+
+        with patch("central.gui.routes.get_pool", return_value=mock_pool):
+            resp = await events_json(mock_request)
+
+        ev = json.loads(resp.body)["events"][0]
+        assert "time_human" not in ev
+        assert "adapter_display" not in ev
+
+
+class TestLocationColumn:
+    """(B) Generic _enriched/top-level location reader — no adapter logic."""
+
+    def _location(self, inner):
+        return _first_row_cells(_render_rows([_event("usgs_quake", inner=inner)]))[2]
+
+    def test_city_state_country(self):
+        loc = self._location({"_enriched": {"geocoder": {
+            "city": "Trinidad", "state": "Colorado", "country": "United States"}}})
+        assert loc == "Trinidad, Colorado, United States"
+
+    def test_state_country_when_city_null(self):
+        loc = self._location({"_enriched": {"geocoder": {
+            "city": None, "state": "Missouri", "country": "United States"}}})
+        assert loc == "Missouri, United States"
+
+    def test_top_level_country_fallback(self):
+        # gdacs-style: no geocoder, country at top level.
+        assert self._location({"country": "Austria"}) == "Austria"
+
+    def test_top_level_state_only_fallback(self):
+        # wfigs-style: state code at top level, no country.
+        assert self._location({"state": "CO"}) == "CO"
+
+    def test_landclass_fallback(self):
+        loc = self._location({"_enriched": {"geocoder": {
+            "city": None, "state": None, "country": None,
+            "landclass": "Ridgecrest Field Office"}}})
+        assert loc == "Ridgecrest Field Office"
+
+    def test_coordinates_alone_are_not_a_location(self):
+        # Bare lat/lon is a position, not a place name -> "—".
+        assert self._location({"latitude": 35.3603324, "longitude": -117.7854995}) == "—"
+
+    def test_none_when_nothing_available(self):
+        assert self._location({}) == "—"
+
+
+class TestSubjectColumn:
+    """(C) Per-adapter one-line summaries, registry-derived dispatch + fallback."""
+
+    def test_every_adapter_has_a_summary_partial(self):
+        from central.adapter_discovery import discover_adapters
+        from central.gui import templates as gui_templates
+        for name in discover_adapters():
+            gui_templates.env.get_template("_event_summaries/%s.html" % name)
+
+    def test_default_summary_partial_exists(self):
+        from central.gui import templates as gui_templates
+        gui_templates.env.get_template("_event_summaries/_default.html")
+
+    def test_every_adapter_summary_renders_without_error(self):
+        from central.adapter_discovery import discover_adapters
+        for name in discover_adapters():
+            _render_rows([_event(name)])  # must not raise
+
+    def test_usgs_quake_summary_is_plain_language(self):
+        cells = _first_row_cells(_render_rows([_event(
+            "usgs_quake", inner={"magnitude": 1.347, "magType": "ml",
+                                 "place": "14 km W of Johannesburg, CA"})]))
+        assert cells[3] == "Magnitude 1.3 — 14 km W of Johannesburg, CA"
+        assert "ml" not in cells[3]  # scale code dropped
+
+    def test_nwis_summary_drops_parameter_code(self):
+        cells = _first_row_cells(_render_rows([_event(
+            "nwis", inner={"parameter_code": "00060", "value": 111.0,
+                           "unit_of_measure": "ft^3/s"})]))
+        assert cells[3] == "Water reading: 111.0 ft^3/s"
+        assert "00060" not in cells[3]  # opaque pcode dropped
+
+    def test_unknown_adapter_summary_is_dash(self):
+        cells = _first_row_cells(_render_rows([_event("not_a_real_adapter", inner={"x": 1})]))
+        assert cells[3] == "—"
+
+    def test_summary_populates_data_subject_for_popup(self):
+        html = _render_rows([_event("usgs_quake", inner={"magnitude": 1.347,
+                                                          "place": "near Town"})])
+        assert 'data-subject="Magnitude 1.3 — near Town"' in html
+
+
+class TestTableRendersThroughHTTP:
+    """End-to-end HTTP render: Time and Adapter cells must be populated in the
+    real response, guarding the route->template binding (not the helper alone)."""
+
+    def _mock_pool(self):
+        now = datetime(2026, 5, 21, 6, 0, tzinfo=timezone.utc)
+
+        def _fetchrow(query, *args):
+            q = " ".join(str(query).split())
+            if "config.sessions" in q:
+                return {"id": 1, "username": "admin", "created_at": now,
+                        "password_changed_at": now, "csrf_token": "csrf"}
+            if "map_tile_url" in q:
+                return {"map_tile_url": "https://t/{z}/{x}/{y}.png",
+                        "map_attribution": "OSM"}
+            return None
+
+        rows = [
+            {"id": "evt-q", "time": now, "received": now, "adapter": "usgs_quake",
+             "category": "quake", "subject": None, "geometry": None,
+             "data": {"data": {"data": {"magnitude": 1.3, "place": "near Town"}}},
+             "regions": []},
+            {"id": "evt-w", "time": now, "received": now, "adapter": "nwis",
+             "category": "hydro", "subject": None, "geometry": None,
+             "data": {"data": {"data": {"value": 5.0, "unit_of_measure": "ft"}}},
+             "regions": []},
+        ]
+        mock_conn = MagicMock()
+        mock_conn.fetchrow = AsyncMock(side_effect=_fetchrow)
+        mock_conn.fetch = AsyncMock(return_value=rows)
+        mock_conn.__aenter__ = AsyncMock(return_value=mock_conn)
+        mock_conn.__aexit__ = AsyncMock()
+        mock_pool = MagicMock()
+        mock_pool.acquire = MagicMock(return_value=mock_conn)
+        return mock_pool
+
+    def _client(self):
+        from fastapi import FastAPI
+        from starlette.testclient import TestClient
+        from central.gui.middleware import SessionMiddleware
+        from central.gui.routes import router
+        app = FastAPI()
+        app.include_router(router)
+        app.add_middleware(SessionMiddleware)
+        return TestClient(app, cookies={"central_session": "valid"})
+
+    def _expected_adapter_display(self):
+        from central.adapter_discovery import discover_adapters
+        return discover_adapters()["usgs_quake"].display_name
+
+    def test_events_page_time_and_adapter_cells_populated(self):
+        mock_pool = self._mock_pool()
+        with patch("central.gui.middleware.get_pool", return_value=mock_pool), \
+             patch("central.gui.routes.get_pool", return_value=mock_pool):
+            resp = self._client().get("/events")
+        assert resp.status_code == 200
+        cells = _first_row_cells(resp.text)
+        assert cells[1].endswith("UTC") and "2026" in cells[1]   # Time non-empty
+        assert cells[4] == self._expected_adapter_display()       # Adapter display_name
+
+    def test_events_rows_fragment_time_and_adapter_cells_populated(self):
+        mock_pool = self._mock_pool()
+        with patch("central.gui.middleware.get_pool", return_value=mock_pool), \
+             patch("central.gui.routes.get_pool", return_value=mock_pool):
+            resp = self._client().get("/events/rows")
+        assert resp.status_code == 200
+        cells = _first_row_cells(resp.text)
+        assert cells[1].endswith("UTC") and "2026" in cells[1]   # Time non-empty
+        assert cells[4] == self._expected_adapter_display()       # Adapter display_name