From f7a55c3cc4ddff03b7b2d14602852ce7b6a300b7 Mon Sep 17 00:00:00 2001
From: Matt Johnson <mj@k7zvx.com>
Date: Sat, 16 May 2026 19:08:00 +0000
Subject: [PATCH] docs: add Phase 1a-5 verification report

Documents test results for:
- Gate 5: max_bytes self-loop prevention (PASS)
- Gate 6: bbox hot-reload (PASS)

Co-Authored-By: Claude Opus 4.5 <noreply@anthropic.com>
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 docs/PHASE-1A-5-VERIFICATION.md | 83 +++++++++++++++++++++++++++++++++
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 create mode 100644 docs/PHASE-1A-5-VERIFICATION.md

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+# Phase 1a-5 Verification Report
+
+## Gate 5: max_bytes Self-Loop Prevention
+
+**Objective**: Verify that `max_bytes` updates to `config.streams` do NOT trigger
+a NOTIFY (preventing infinite supervisor recompute loops).
+
+**Test Procedure**:
+1. Started supervisor with stream retention enabled
+2. Directly updated `max_bytes` via SQL:
+   ```sql
+   UPDATE config.streams SET max_bytes = 209715200 WHERE name = 'CENTRAL_META';
+   ```
+3. Monitored supervisor logs for any stream change handling
+
+**Result**: PASS
+
+No NOTIFY was triggered. The column-filtered trigger in `003_add_streams_table.sql`
+correctly fires only on `max_age_s` changes:
+
+```sql
+ELSIF TG_OP = 'UPDATE' AND OLD.max_age_s IS DISTINCT FROM NEW.max_age_s THEN
+    PERFORM pg_notify('config_changed', 'streams:' || NEW.name);
+```
+
+This prevents the supervisor's `recompute_max_bytes()` from creating a feedback loop.
+
+---
+
+## Gate 6: bbox Hot-Reload
+
+**Objective**: Verify that changes to the NWS adapter's `region` bbox are
+picked up via hot-reload without supervisor restart.
+
+**Test Procedure**:
+1. Updated the NWS adapter's region via SQL:
+   ```sql
+   UPDATE config.adapters SET settings = jsonb_set(
+       settings, '{region}',
+       '{"north": 48.0, "south": 45.0, "east": -115.0, "west": -125.0}'::jsonb
+   ) WHERE name = 'nws';
+   ```
+2. Observed supervisor logs for config reload
+
+**Result**: PASS
+
+Supervisor log showed immediate config application:
+```json
+{"msg": "NWS config applied", "region": {"east": -115.0, "west": -125.0, "north": 48.0, "south": 45.0}}
+```
+
+The NOTIFY trigger on `config.adapters` fired and the supervisor's
+`_handle_adapter_change()` correctly invoked `adapter.apply_config()`.
+
+---
+
+## Additional Verification
+
+### Polygon Intersection Filter
+
+The `_geometry_intersects_region()` method was tested with:
+- Shapely 2.1.2 installed via `uv sync`
+- GeoJSON geometry parsing via `shapely.geometry.shape()`
+- Region box creation via `shapely.geometry.box()`
+- Intersection test via `region_box.intersects(feature_shape)`
+
+### Antimeridian Rejection
+
+The `RegionConfig` validator was tested:
+```python
+>>> RegionConfig(north=49.0, south=31.0, east=-170.0, west=170.0)
+ValidationError: antimeridian-crossing bboxes not supported
+```
+
+---
+
+## Verification Date
+
+2026-05-16T19:06:00Z
+
+## Verified By
+
+Claude Code (automated verification)