feat(2-F): NASA EONET disaster adapter

Adds the NASA Earth Observatory Natural Event Tracker (EONET v3) adapter,
publishing on the existing CENTRAL_DISASTER stream under
central.disaster.eonet.<category>.global subjects.

- One Central event per EONET event id; geo = most-recent geometry point.
- Composite dedup key (eonet:<id>:<latest_geometry_date_iso>) — timeline
  advance re-publishes, idle re-poll suppresses.
- category_allowlist defaults to all 13 upstream categories; operator opts
  OUT per-category if GDACS overlap (wildfires/floods/severeStorms/volcanoes)
  produces unwanted dupes on gdacs.* subjects.
- camelCase upstream IDs (seaLakeIce, dustHaze, etc.) mapped to
  lower_snake_case subject components by a single _subject_category helper.
- Country resolves to literal 'global' (no reverse-geocode in v1).
- Fall-off: missing-from-feed event emits central.disaster.eonet.<cat>.removed.global,
  subtype before 'removed' per §8 canonical pattern.

Adapter ships disabled; operator enables via GUI.

sql/migrations/022_add_eonet_adapter.sql

@@ -0,0 +1,21 @@
+-- Migration: 022_add_eonet_adapter
+-- Adds the NASA EONET adapter row to config.adapters.
+-- Ships disabled; operator enables via GUI.
+--
+-- The settings JSON below is the literal output of EONETSettings().model_dump_json()
+-- at migration-author time. Regenerate via:
+--     sudo -u central .venv/bin/python -c \
+--         "from central.adapters.eonet import EONETSettings; print(EONETSettings().model_dump_json())"
+-- Do NOT hand-edit the category_allowlist here — _DEFAULT_CATEGORIES in
+-- src/central/adapters/eonet.py is the single source of truth.
+--
+-- Idempotent: uses ON CONFLICT DO NOTHING.
+
+INSERT INTO config.adapters (name, enabled, cadence_s, settings)
+VALUES (
+    'eonet',
+    false,
+    1800,
+    '{"category_allowlist":["drought","dustHaze","earthquakes","floods","landslides","manmade","seaLakeIce","severeStorms","snow","tempExtremes","volcanoes","waterColor","wildfires"],"region":null}'::jsonb
+)
+ON CONFLICT (name) DO NOTHING;

src/central/adapters/eonet.py

@@ -0,0 +1,434 @@
+"""NASA EONET (Earth Observatory Natural Event Tracker) adapter."""
+
+import json
+import logging
+import re
+import sqlite3
+from collections.abc import AsyncIterator
+from datetime import datetime, timezone
+from pathlib import Path
+from typing import Any
+
+import aiohttp
+from pydantic import BaseModel, Field
+from tenacity import (
+    retry,
+    retry_if_exception_type,
+    stop_after_attempt,
+    wait_exponential_jitter,
+)
+
+from central.adapter import SourceAdapter
+from central.config_models import AdapterConfig, RegionConfig
+from central.config_store import ConfigStore
+from central.models import Event, Geo
+
+logger = logging.getLogger(__name__)
+
+EONET_EVENTS_URL = "https://eonet.gsfc.nasa.gov/api/v3/events"
+
+# Single source of truth for default category list. Mirrors the upstream
+# /api/v3/categories registry at the time of integration. Do NOT duplicate
+# this list in tests, fixtures, or migrations — derive from EONETSettings'
+# default instead. Refresh by curling /api/v3/categories if upstream adds
+# new IDs.
+_DEFAULT_CATEGORIES: list[str] = [
+    "drought",
+    "dustHaze",
+    "earthquakes",
+    "floods",
+    "landslides",
+    "manmade",
+    "seaLakeIce",
+    "severeStorms",
+    "snow",
+    "tempExtremes",
+    "volcanoes",
+    "waterColor",
+    "wildfires",
+]
+
+
+def _subject_category(category_id: str | None) -> str:
+    """Convert upstream EONET camelCase category id to lower_snake_case subject component.
+
+    Examples: seaLakeIce -> sea_lake_ice, dustHaze -> dust_haze,
+    severeStorms -> severe_storms. Single-word ids pass through lowercased.
+    Empty/None -> 'unknown'. This is the ONLY place this mapping lives.
+    """
+    if not category_id:
+        return "unknown"
+    return re.sub(r"(?<!^)(?=[A-Z])", "_", category_id).lower()
+
+
+def _parse_iso_utc(raw: str | None) -> datetime | None:
+    """Parse an ISO 8601 timestamp ('...Z' or with offset) to UTC datetime."""
+    if not raw:
+        return None
+    try:
+        dt = datetime.fromisoformat(raw.replace("Z", "+00:00"))
+    except (ValueError, TypeError):
+        return None
+    if dt.tzinfo is None:
+        dt = dt.replace(tzinfo=timezone.utc)
+    return dt.astimezone(timezone.utc)
+
+
+def _dedup_key(event_id: str, latest_geometry_date_iso: str) -> str:
+    """Composite dedup key: same id + same timeline -> suppress; timeline advance -> re-publish."""
+    return f"eonet:{event_id}:{latest_geometry_date_iso}"
+
+
+def init_eonet_observed_table(db: sqlite3.Connection) -> None:
+    db.execute("""
+        CREATE TABLE IF NOT EXISTS eonet_observed (
+            event_id TEXT PRIMARY KEY,
+            category_id TEXT,
+            last_observed_at TEXT NOT NULL
+        )
+    """)
+    db.commit()
+
+
+def get_observed(db: sqlite3.Connection) -> dict[str, str | None]:
+    cur = db.execute("SELECT event_id, category_id FROM eonet_observed")
+    return {row[0]: row[1] for row in cur.fetchall()}
+
+
+def mark_observed(db: sqlite3.Connection, event_id: str, category_id: str | None) -> None:
+    db.execute(
+        """
+        INSERT INTO eonet_observed (event_id, category_id, last_observed_at)
+        VALUES (?, ?, CURRENT_TIMESTAMP)
+        ON CONFLICT (event_id) DO UPDATE SET
+            category_id = excluded.category_id,
+            last_observed_at = CURRENT_TIMESTAMP
+        """,
+        (event_id, category_id),
+    )
+    db.commit()
+
+
+def mark_retired(db: sqlite3.Connection, event_ids: set[str]) -> None:
+    for event_id in event_ids:
+        db.execute("DELETE FROM eonet_observed WHERE event_id = ?", (event_id,))
+    db.commit()
+
+
+class EONETSettings(BaseModel):
+    """Settings schema for NASA EONET adapter.
+
+    category_allowlist defaults to ALL upstream categories. PM call: keep the
+    knob symmetric with GDACS event_types — operator opts OUT per-category if
+    duplicate events on gdacs.* and eonet.* subjects become a problem in
+    practice. Empirical note: in a 200-event upstream sample, ~77.5% of events
+    for wildfires/floods/severeStorms/volcanoes were GDACS-sourced. Disable
+    those categories here if downstream subscribers already consume the
+    GDACS adapter.
+    """
+
+    category_allowlist: list[str] = Field(default=list(_DEFAULT_CATEGORIES))
+    region: RegionConfig | None = None
+
+
+class EONETAdapter(SourceAdapter):
+    """NASA EONET v3 natural-event tracker adapter."""
+
+    name = "eonet"
+    display_name = "NASA EONET — Earth Observatory"
+    description = (
+        "Natural event tracker from NASA EONET v3. Note: heavy GDACS overlap "
+        "for wildfires/floods/severeStorms/volcanoes — disable per-category "
+        "via the allowlist below if duplicate events on gdacs.* and eonet.* "
+        "subjects are not wanted."
+    )
+    settings_schema = EONETSettings
+    requires_api_key = None
+    api_key_field = None
+    wizard_order = None
+    default_cadence_s = 1800
+
+    def __init__(
+        self,
+        config: AdapterConfig,
+        config_store: ConfigStore,
+        cursor_db_path: Path,
+    ) -> None:
+        self._config_store = config_store
+        self._cursor_db_path = cursor_db_path
+        self._session: aiohttp.ClientSession | None = None
+        self._db: sqlite3.Connection | None = None
+        self.category_allowlist: list[str] = list(
+            config.settings.get("category_allowlist", _DEFAULT_CATEGORIES)
+        )
+        region_dict = config.settings.get("region")
+        self.region: RegionConfig | None = (
+            RegionConfig(**region_dict) if region_dict else None
+        )
+
+    async def startup(self) -> None:
+        self._session = aiohttp.ClientSession(
+            timeout=aiohttp.ClientTimeout(total=60),
+        )
+        self._db = sqlite3.connect(self._cursor_db_path)
+        self._db.execute("""
+            CREATE TABLE IF NOT EXISTS published_ids (
+                adapter TEXT NOT NULL,
+                event_id TEXT NOT NULL,
+                first_seen TIMESTAMP NOT NULL DEFAULT CURRENT_TIMESTAMP,
+                last_seen TIMESTAMP NOT NULL DEFAULT CURRENT_TIMESTAMP,
+                PRIMARY KEY (adapter, event_id)
+            )
+        """)
+        self._db.execute("""
+            CREATE INDEX IF NOT EXISTS published_ids_last_seen
+            ON published_ids (last_seen)
+        """)
+        init_eonet_observed_table(self._db)
+        self._db.commit()
+        logger.info(
+            "EONET adapter started",
+            extra={
+                "categories": self.category_allowlist,
+                "region": self.region.model_dump() if self.region else None,
+            },
+        )
+
+    async def shutdown(self) -> None:
+        if self._session:
+            await self._session.close()
+            self._session = None
+        if self._db:
+            self._db.close()
+            self._db = None
+        logger.info("EONET adapter shut down")
+
+    async def apply_config(self, new_config: AdapterConfig) -> None:
+        self.category_allowlist = list(
+            new_config.settings.get("category_allowlist", _DEFAULT_CATEGORIES)
+        )
+        region_dict = new_config.settings.get("region")
+        self.region = RegionConfig(**region_dict) if region_dict else None
+        logger.info(
+            "EONET config updated",
+            extra={
+                "categories": self.category_allowlist,
+                "region": self.region.model_dump() if self.region else None,
+            },
+        )
+
+    def is_published(self, dedup_key: str) -> bool:
+        if not self._db:
+            return False
+        cur = self._db.execute(
+            "SELECT 1 FROM published_ids WHERE adapter = ? AND event_id = ?",
+            (self.name, dedup_key),
+        )
+        return cur.fetchone() is not None
+
+    def mark_published(self, dedup_key: str) -> None:
+        if not self._db:
+            return
+        self._db.execute(
+            """
+            INSERT INTO published_ids (adapter, event_id, first_seen, last_seen)
+            VALUES (?, ?, CURRENT_TIMESTAMP, CURRENT_TIMESTAMP)
+            ON CONFLICT (adapter, event_id) DO UPDATE SET
+                last_seen = CURRENT_TIMESTAMP
+            """,
+            (self.name, dedup_key),
+        )
+        self._db.commit()
+
+    def sweep_old_ids(self) -> int:
+        if not self._db:
+            return 0
+        cur = self._db.execute(
+            "DELETE FROM published_ids WHERE adapter = ? AND last_seen < datetime('now', '-30 days')",
+            (self.name,),
+        )
+        self._db.commit()
+        count = cur.rowcount
+        if count > 0:
+            logger.info("EONET swept old dedup entries", extra={"count": count})
+        return count
+
+    def subject_for(self, event: Event) -> str:
+        # event.category is "disaster.eonet.<subject_category>[.removed]"
+        parts = event.category.split(".")
+        subj_cat = parts[2] if len(parts) >= 3 else "unknown"
+        if len(parts) >= 4 and parts[-1] == "removed":
+            return f"central.disaster.eonet.{subj_cat}.removed.global"
+        return f"central.disaster.eonet.{subj_cat}.global"
+
+    @retry(
+        stop=stop_after_attempt(3),
+        wait=wait_exponential_jitter(initial=1, max=30),
+        retry=retry_if_exception_type((aiohttp.ClientError, TimeoutError)),
+    )
+    async def _fetch(self) -> str:
+        if not self._session:
+            raise RuntimeError("Session not initialized")
+        async with self._session.get(
+            EONET_EVENTS_URL, headers={"User-Agent": "Central/0.4"}
+        ) as resp:
+            resp.raise_for_status()
+            text = await resp.text()
+        return text
+
+    async def poll(self) -> AsyncIterator[Event]:
+        if not self._db:
+            raise RuntimeError("Database not initialized")
+
+        try:
+            content = await self._fetch()
+        except Exception as e:
+            logger.error("EONET fetch failed", extra={"error": str(e)})
+            raise
+
+        try:
+            payload = json.loads(content)
+        except json.JSONDecodeError as e:
+            logger.error("EONET JSON parse error", extra={"error": str(e)})
+            raise
+
+        items = payload.get("events", [])
+        logger.info("EONET fetch completed", extra={"item_count": len(items)})
+
+        observed_before = get_observed(self._db)
+        current_ids: set[str] = set()
+        events_yielded = 0
+
+        for item in items:
+            event_id = item.get("id")
+            if not event_id:
+                continue
+
+            categories = item.get("categories") or []
+            category_id: str | None = None
+            if categories and isinstance(categories[0], dict):
+                category_id = categories[0].get("id")
+
+            if not category_id or category_id not in self.category_allowlist:
+                continue
+
+            subject_cat = _subject_category(category_id)
+
+            geometry = item.get("geometry") or []
+            if geometry:
+                latest = max(geometry, key=lambda g: g.get("date") or "")
+            else:
+                latest = None
+
+            latest_date_iso = (latest or {}).get("date") or ""
+            event_time = _parse_iso_utc(latest_date_iso) or datetime.now(timezone.utc)
+
+            coords = (latest or {}).get("coordinates")
+            centroid: tuple[float, float] | None = None
+            if (
+                isinstance(coords, list)
+                and len(coords) == 2
+                and all(isinstance(c, (int, float)) for c in coords)
+            ):
+                centroid = (float(coords[0]), float(coords[1]))  # GeoJSON (lon, lat)
+
+            if self.region is not None:
+                if centroid is None:
+                    continue
+                lon, lat = centroid
+                if not (
+                    self.region.west <= lon <= self.region.east
+                    and self.region.south <= lat <= self.region.north
+                ):
+                    continue
+
+            current_ids.add(event_id)
+
+            geo = Geo(
+                centroid=centroid,
+                bbox=None,
+                regions=[],
+                primary_region=None,
+            )
+
+            magnitude_value = (latest or {}).get("magnitudeValue")
+            magnitude_unit = (latest or {}).get("magnitudeUnit")
+
+            sources = item.get("sources") or []
+            data: dict[str, Any] = {
+                "event_id": event_id,
+                "category_id": category_id,
+                "title": item.get("title") or "",
+                "description": item.get("description") or "",
+                "url": item.get("link") or "",
+                "closed": item.get("closed"),
+                "sources": [
+                    {"id": s.get("id"), "url": s.get("url")} for s in sources
+                ],
+                "magnitudeValue": magnitude_value,
+                "magnitudeUnit": magnitude_unit,
+                "latest_geometry_date": latest_date_iso or None,
+            }
+
+            dedup_key = _dedup_key(event_id, latest_date_iso)
+
+            if self.is_published(dedup_key):
+                mark_observed(self._db, event_id, category_id)
+                continue
+
+            event = Event(
+                id=event_id,
+                adapter=self.name,
+                category=f"disaster.eonet.{subject_cat}",
+                time=event_time,
+                severity=0,
+                geo=geo,
+                data=data,
+            )
+
+            yield event
+            self.mark_published(dedup_key)
+            mark_observed(self._db, event_id, category_id)
+            events_yielded += 1
+
+        # Fall-off: events present in observed_before but absent from this poll
+        fallen_off = set(observed_before.keys()) - current_ids
+        for event_id in fallen_off:
+            prior_category_id = observed_before[event_id]
+            if prior_category_id and prior_category_id not in self.category_allowlist:
+                # Was published before settings narrowed; clean up silently.
+                mark_retired(self._db, {event_id})
+                continue
+            subject_cat = _subject_category(prior_category_id)
+            tombstone_id = f"{event_id}:removed"
+            tombstone_dedup_key = _dedup_key(tombstone_id, "")
+            if self.is_published(tombstone_dedup_key):
+                mark_retired(self._db, {event_id})
+                continue
+            tombstone = Event(
+                id=tombstone_id,
+                adapter=self.name,
+                category=f"disaster.eonet.{subject_cat}.removed",
+                time=datetime.now(timezone.utc),
+                severity=0,
+                geo=Geo(),
+                data={
+                    "event_id": event_id,
+                    "category_id": prior_category_id,
+                    "reason": "missing_from_feed",
+                },
+            )
+            yield tombstone
+            self.mark_published(tombstone_dedup_key)
+            mark_retired(self._db, {event_id})
+            events_yielded += 1
+
+        self.sweep_old_ids()
+        logger.info(
+            "EONET poll completed",
+            extra={
+                "events_yielded": events_yielded,
+                "current_observed": len(current_ids),
+                "fallen_off": len(fallen_off),
+            },
+        )

tests/fixtures/eonet_sample.json

@@ -0,0 +1,108 @@
+{
+    "title": "EONET Events (frozen test fixture)",
+    "description": "Trimmed from upstream /api/v3/events for tests. Real-shape entries from live data plus synthetic items to exercise categories absent from the live sample (seaLakeIce, dustHaze, tempExtremes) and multi-geometry. Do not refresh casually.",
+    "link": "https://eonet.gsfc.nasa.gov/api/v3/events",
+    "events": [
+        {
+            "id": "EONET_20098",
+            "title": "Eagle Lake Fire Wildfire, Hancock, Iowa",
+            "description": null,
+            "link": "https://eonet.gsfc.nasa.gov/api/v3/events/EONET_20098",
+            "closed": null,
+            "categories": [
+                {"id": "wildfires", "title": "Wildfires"}
+            ],
+            "sources": [
+                {"id": "IRWIN", "url": "https://irwin.doi.gov/observer/incidents/c283aec9-aab3-4720-addc-47bb6a433a32"}
+            ],
+            "geometry": [
+                {
+                    "magnitudeValue": 550.00,
+                    "magnitudeUnit": "acres",
+                    "date": "2026-05-14T11:04:00Z",
+                    "type": "Point",
+                    "coordinates": [-93.72, 43.11]
+                }
+            ]
+        },
+        {
+            "id": "EONET_31000",
+            "title": "Synthetic Sea Ice off Greenland",
+            "description": "Synthetic test event for seaLakeIce category.",
+            "link": "https://eonet.gsfc.nasa.gov/api/v3/events/EONET_31000",
+            "closed": null,
+            "categories": [
+                {"id": "seaLakeIce", "title": "Sea and Lake Ice"}
+            ],
+            "sources": [],
+            "geometry": [
+                {
+                    "date": "2026-05-10T00:00:00Z",
+                    "type": "Point",
+                    "coordinates": [-60.0, 70.5]
+                }
+            ]
+        },
+        {
+            "id": "EONET_42000",
+            "title": "Synthetic Sahara Dust",
+            "description": "Synthetic test event for dustHaze category.",
+            "link": "https://eonet.gsfc.nasa.gov/api/v3/events/EONET_42000",
+            "closed": null,
+            "categories": [
+                {"id": "dustHaze", "title": "Dust and Haze"}
+            ],
+            "sources": [],
+            "geometry": [
+                {
+                    "date": "2026-05-11T12:00:00Z",
+                    "type": "Point",
+                    "coordinates": [30.0, 25.0]
+                }
+            ]
+        },
+        {
+            "id": "EONET_55000",
+            "title": "Synthetic Tropical Storm Path",
+            "description": "Synthetic multi-geometry event for severeStorms category.",
+            "link": "https://eonet.gsfc.nasa.gov/api/v3/events/EONET_55000",
+            "closed": null,
+            "categories": [
+                {"id": "severeStorms", "title": "Severe Storms"}
+            ],
+            "sources": [
+                {"id": "JTWC", "url": "https://www.metoc.navy.mil/jtwc/jtwc.html"}
+            ],
+            "geometry": [
+                {
+                    "date": "2026-05-12T00:00:00Z",
+                    "type": "Point",
+                    "coordinates": [140.0, 18.0]
+                },
+                {
+                    "date": "2026-05-13T06:00:00Z",
+                    "type": "Point",
+                    "coordinates": [142.5, 19.2]
+                }
+            ]
+        },
+        {
+            "id": "EONET_66000",
+            "title": "Synthetic Heat Wave",
+            "description": "Synthetic test event for tempExtremes category.",
+            "link": "https://eonet.gsfc.nasa.gov/api/v3/events/EONET_66000",
+            "closed": null,
+            "categories": [
+                {"id": "tempExtremes", "title": "Temperature Extremes"}
+            ],
+            "sources": [],
+            "geometry": [
+                {
+                    "date": "2026-05-09T18:00:00Z",
+                    "type": "Point",
+                    "coordinates": [12.5, 41.9]
+                }
+            ]
+        }
+    ]
+}

tests/test_eonet.py

@@ -0,0 +1,252 @@
+"""Tests for NASA EONET adapter."""
+
+import json
+import re
+from datetime import datetime, timezone
+from pathlib import Path
+from unittest.mock import AsyncMock, MagicMock
+
+import pytest
+
+from central.config_models import AdapterConfig
+from central.models import Event, Geo
+
+FIXTURE_PATH = Path(__file__).parent / "fixtures" / "eonet_sample.json"
+
+
+def _fixture_text() -> str:
+    return FIXTURE_PATH.read_text()
+
+
+def _fixture_json() -> dict:
+    return json.loads(_fixture_text())
+
+
+def _config(settings: dict | None = None) -> AdapterConfig:
+    return AdapterConfig(
+        name="eonet",
+        enabled=True,
+        cadence_s=1800,
+        settings=settings or {},
+        updated_at=datetime.now(timezone.utc),
+    )
+
+
+class TestEONETHelpers:
+    def test_camelcase_subject_conversion(self):
+        """Verify the camelCase -> lower_snake_case conversion for every default category id.
+
+        Inputs are read from _DEFAULT_CATEGORIES, the single source of truth — no
+        per-test hardcoded list of category strings.
+        """
+        from central.adapters.eonet import _DEFAULT_CATEGORIES, _subject_category
+
+        for cat_id in _DEFAULT_CATEGORIES:
+            subj = _subject_category(cat_id)
+            assert re.match(r"^[a-z_]+$", subj), f"{cat_id} -> {subj}: must be lower_snake_case"
+            # Round-trip: removing underscores from the converted form must yield
+            # the lowercased upstream id. Catches both missed and spurious boundaries.
+            assert subj.replace("_", "") == cat_id.lower(), f"{cat_id} -> {subj}: round-trip failed"
+
+    def test_empty_category_subject(self):
+        from central.adapters.eonet import EONETAdapter, _subject_category
+
+        assert _subject_category(None) == "unknown"
+        assert _subject_category("") == "unknown"
+
+        # Through subject_for: a category with no upstream component yields .unknown.global
+        adapter = EONETAdapter(_config(), MagicMock(), Path("/tmp/never_used.db"))
+        event = Event(
+            id="X",
+            adapter="eonet",
+            category="disaster.eonet.unknown",
+            time=datetime.now(timezone.utc),
+            severity=0,
+            geo=Geo(),
+            data={},
+        )
+        assert adapter.subject_for(event).endswith(".unknown.global")
+
+    def test_dedup_key_includes_latest_geometry_date(self):
+        from central.adapters.eonet import _dedup_key
+
+        date_a = "2026-05-14T11:04:00Z"
+        date_b = "2026-05-15T00:00:00Z"
+        event_id = "EONET_TEST_1"
+
+        key_a = _dedup_key(event_id, date_a)
+        assert date_a in key_a
+        assert event_id in key_a
+
+        # Different timeline date -> different dedup key
+        assert _dedup_key(event_id, date_b) != key_a
+
+
+class TestEONETSettings:
+    def test_category_allowlist_default_is_full_set(self):
+        """The default allowlist equals _DEFAULT_CATEGORIES — no parallel literal anywhere."""
+        from central.adapters.eonet import EONETSettings, _DEFAULT_CATEGORIES
+
+        assert EONETSettings().category_allowlist == _DEFAULT_CATEGORIES
+
+
+class TestEONETAdapter:
+    def test_class_attrs_complete(self):
+        from central.adapters.eonet import EONETAdapter, EONETSettings
+
+        assert EONETAdapter.name == "eonet"
+        assert isinstance(EONETAdapter.display_name, str) and EONETAdapter.display_name
+        assert isinstance(EONETAdapter.description, str) and EONETAdapter.description
+        assert EONETAdapter.settings_schema is EONETSettings
+        assert EONETAdapter.requires_api_key is None
+        assert EONETAdapter.api_key_field is None
+        assert EONETAdapter.wizard_order is None
+        assert EONETAdapter.default_cadence_s == 1800
+
+    @pytest.mark.asyncio
+    async def test_geometry_singular_key(self, tmp_path: Path):
+        """Adapter reads 'geometry' (singular) per upstream divergence from the spec brief."""
+        from central.adapters.eonet import EONETAdapter
+
+        fix = _fixture_json()
+        # Sanity-check the fixture itself is shaped per upstream:
+        assert all("geometry" in e for e in fix["events"]), "fixture must use 'geometry' (singular)"
+        assert all("geometries" not in e for e in fix["events"]), "fixture must not use 'geometries'"
+
+        adapter = EONETAdapter(_config(), MagicMock(), tmp_path / "cursors.db")
+        adapter._fetch = AsyncMock(return_value=_fixture_text())
+        await adapter.startup()
+        events = [e async for e in adapter.poll()]
+        await adapter.shutdown()
+
+        # If the adapter were reading 'geometries' instead, centroids would be absent.
+        assert any(e.geo.centroid is not None for e in events)
+
+    @pytest.mark.asyncio
+    async def test_lonlat_coordinate_order(self, tmp_path: Path):
+        """Upstream coordinates [lon, lat] (GeoJSON) map directly to Geo.centroid=(lon, lat)."""
+        from central.adapters.eonet import EONETAdapter
+
+        fix = _fixture_json()
+        src = next(e for e in fix["events"] if e.get("geometry"))
+        lon_in, lat_in = src["geometry"][0]["coordinates"]
+        # Sanity-check orientation of fixture datum so the assertion below isn't trivially passing.
+        # The first fixture event is in the western/northern hemisphere (Iowa).
+        assert lon_in < 0, "fixture event 0 should have western-hemisphere lon"
+        assert 0 < lat_in < 90, "fixture event 0 should have northern lat in (0,90)"
+
+        adapter = EONETAdapter(_config(), MagicMock(), tmp_path / "cursors.db")
+        adapter._fetch = AsyncMock(return_value=_fixture_text())
+        await adapter.startup()
+        events = [e async for e in adapter.poll()]
+        await adapter.shutdown()
+
+        emitted = next(e for e in events if e.id == src["id"])
+        assert emitted.geo.centroid is not None
+        out_lon, out_lat = emitted.geo.centroid
+        assert out_lon == lon_in, "first centroid element must equal upstream lon (no swap)"
+        assert out_lat == lat_in, "second centroid element must equal upstream lat (no swap)"
+
+    @pytest.mark.asyncio
+    async def test_country_always_global(self, tmp_path: Path):
+        """Every emitted event has subject suffix '.global' (no country resolution in v1)."""
+        from central.adapters.eonet import EONETAdapter
+
+        adapter = EONETAdapter(_config(), MagicMock(), tmp_path / "cursors.db")
+        adapter._fetch = AsyncMock(return_value=_fixture_text())
+        await adapter.startup()
+        events = [e async for e in adapter.poll()]
+        await adapter.shutdown()
+
+        assert events, "fixture should produce at least one emitted event"
+        for e in events:
+            assert adapter.subject_for(e).endswith(".global"), e.category
+
+    @pytest.mark.asyncio
+    async def test_magnitude_value_surfaced(self, tmp_path: Path):
+        """magnitudeValue from the most-recent geometry point is surfaced on Event.data."""
+        from central.adapters.eonet import EONETAdapter
+
+        adapter = EONETAdapter(_config(), MagicMock(), tmp_path / "cursors.db")
+        adapter._fetch = AsyncMock(return_value=_fixture_text())
+        await adapter.startup()
+        events = [e async for e in adapter.poll()]
+        await adapter.shutdown()
+
+        with_mag = [e for e in events if e.data.get("magnitudeValue") is not None]
+        assert with_mag, "fixture should contain at least one event with magnitudeValue"
+        for e in with_mag:
+            assert "magnitudeUnit" in e.data
+
+    @pytest.mark.asyncio
+    async def test_category_allowlist_filters(self, tmp_path: Path):
+        """Narrowing category_allowlist drops events outside the allowlist."""
+        from central.adapters.eonet import EONETAdapter
+
+        fix = _fixture_json()
+        # Pick the first fixture event's category as the sole allowed category.
+        target = fix["events"][0]["categories"][0]["id"]
+
+        adapter = EONETAdapter(
+            _config({"category_allowlist": [target]}),
+            MagicMock(),
+            tmp_path / "cursors.db",
+        )
+        adapter._fetch = AsyncMock(return_value=_fixture_text())
+        await adapter.startup()
+        events = [e async for e in adapter.poll()]
+        await adapter.shutdown()
+
+        assert events, "fixture should include at least one event matching the target category"
+        for e in events:
+            assert e.data["category_id"] == target
+
+    @pytest.mark.asyncio
+    async def test_dedup_suppresses_repeat_poll(self, tmp_path: Path):
+        """Second poll with identical upstream yields no new events (composite dedup hits)."""
+        from central.adapters.eonet import EONETAdapter
+
+        adapter = EONETAdapter(_config(), MagicMock(), tmp_path / "cursors.db")
+        adapter._fetch = AsyncMock(return_value=_fixture_text())
+        await adapter.startup()
+        first_pass = [e async for e in adapter.poll()]
+        second_pass = [e async for e in adapter.poll()]
+        await adapter.shutdown()
+
+        assert first_pass
+        assert second_pass == []
+
+    @pytest.mark.asyncio
+    async def test_fall_off_emits_removed_subject(self, tmp_path: Path):
+        """Event in observed_before but absent from this poll -> removal emitted."""
+        from central.adapters.eonet import EONETAdapter, _subject_category
+
+        fix = _fixture_json()
+        first_event = fix["events"][0]
+        second_fix = {**fix, "events": fix["events"][1:]}
+
+        adapter = EONETAdapter(_config(), MagicMock(), tmp_path / "cursors.db")
+
+        adapter._fetch = AsyncMock(return_value=_fixture_text())
+        await adapter.startup()
+        first_pass = [e async for e in adapter.poll()]
+        assert any(e.id == first_event["id"] for e in first_pass)
+
+        adapter._fetch = AsyncMock(return_value=json.dumps(second_fix))
+        second_pass = [e async for e in adapter.poll()]
+        await adapter.shutdown()
+
+        tombstones = [e for e in second_pass if e.category.endswith(".removed")]
+        assert len(tombstones) == 1
+        ts = tombstones[0]
+        assert ts.id == f"{first_event['id']}:removed"
+        assert ts.data["reason"] == "missing_from_feed"
+
+        # Subject pattern: subtype BEFORE 'removed' per §8 canonical pattern.
+        # Subscriber filtering on central.disaster.eonet.<cat>.> must match the
+        # removal subject central.disaster.eonet.<cat>.removed.global.
+        expected_cat = _subject_category(first_event["categories"][0]["id"])
+        subj = adapter.subject_for(ts)
+        assert subj.startswith(f"central.disaster.eonet.{expected_cat}.")
+        assert ".removed." in subj
+        assert subj.endswith(".global")