From 6a5d938976f61088334f09fee5df7297359af578 Mon Sep 17 00:00:00 2001
From: ledger <ledger@agents.invalid>
Date: Mon, 2 Nov 2026 00:06:28 +0000
Subject: [PATCH] ledger: openmeteo per-city summary extract (2026-11-02)

---
 .../ledger/2026-11-02-openmeteo-summary.csv   |  7 ++
 .../verify_2026_11_02_openmeteo_summary.py    | 84 +++++++++++++++++++
 2 files changed, 91 insertions(+)
 create mode 100644 wizard-work/ledger/2026-11-02-openmeteo-summary.csv
 create mode 100644 wizard-work/ledger/verify_2026_11_02_openmeteo_summary.py

diff --git a/wizard-work/ledger/2026-11-02-openmeteo-summary.csv b/wizard-work/ledger/2026-11-02-openmeteo-summary.csv
new file mode 100644
index 0000000..7ced6fb
--- /dev/null
+++ b/wizard-work/ledger/2026-11-02-openmeteo-summary.csv
@@ -0,0 +1,7 @@
+city,country,temperature_2m_C,apparent_temperature_C,apparent_minus_actual_C,relative_humidity_pct,weather_code,condition,wind_speed_10m_kmh
+Cape Town,South Africa,16.1,14.1,-2.0,85,1,Mainly clear,21.8
+London,United Kingdom,8.9,6.9,-2.0,84,2,Partly cloudy,7.9
+New York,United States,12.7,9.9,-2.8,58,0,Clear sky,10.5
+Sydney,Australia,20.2,21.0,0.8,74,1,Mainly clear,6.6
+São Paulo,Brazil,21.7,24.1,2.4,87,3,Overcast,7.0
+Tokyo,Japan,11.9,11.7,-0.2,91,3,Overcast,2.3
diff --git a/wizard-work/ledger/verify_2026_11_02_openmeteo_summary.py b/wizard-work/ledger/verify_2026_11_02_openmeteo_summary.py
new file mode 100644
index 0000000..12c254f
--- /dev/null
+++ b/wizard-work/ledger/verify_2026_11_02_openmeteo_summary.py
@@ -0,0 +1,84 @@
+#!/usr/bin/env python3
+"""Verify wizard-work/ledger/2026-11-02-openmeteo-summary.csv against the
+source JSON it was derived from.  Exit code is the verdict.
+
+EXIT CODES
+  0  committed CSV matches the source-derived table (header + all rows)
+  1  mismatch (header, row count, or per-cell value)
+  2  ungradable (source JSON or CSV unreadable/malformed)
+"""
+import json
+import sys
+
+HERE = '/root/troupe-standup/wizard-work/ledger'
+SRC = HERE + '/openmeteo-source-2026-11-01.json'
+CSV = HERE + '/2026-11-02-openmeteo-summary.csv'
+EXPECTED_HEADER = ['city', 'country', 'temperature_2m_C', 'apparent_temperature_C',
+                   'apparent_minus_actual_C', 'relative_humidity_pct', 'weather_code',
+                   'condition', 'wind_speed_10m_kmh']
+
+
+def recompute():
+    d = json.load(open(SRC))
+    rows = []
+    for c in sorted(d):
+        g = d[c]['geocode']
+        w = d[c]['weather']
+        rows.append({
+            'city': c,
+            'country': g['country'],
+            'temperature_2m_C': w['temperature_2m'],
+            'apparent_temperature_C': w['apparent_temperature'],
+            'apparent_minus_actual_C': round(w['apparent_temperature'] - w['temperature_2m'], 1),
+            'relative_humidity_pct': w['relative_humidity_2m'],
+            'weather_code': w['weather_code'],
+            'condition': w['weather_desc'],
+            'wind_speed_10m_kmh': w['wind_speed_10m'],
+        })
+    return rows
+
+
+def close(a, b, tol=1e-9):
+    try:
+        return abs(float(a) - float(b)) <= tol
+    except (TypeError, ValueError):
+        return a == b
+
+
+def main():
+    try:
+        expected = recompute()
+    except Exception as e:
+        print('UNGRADABLE: cannot recompute from source: ' + str(e))
+        return 2
+    try:
+        with open(CSV) as f:
+            lines = [ln.rstrip('\n') for ln in f]
+    except Exception as e:
+        print('UNGRADABLE: cannot read CSV: ' + str(e))
+        return 2
+    if not lines:
+        print('FAIL: CSV is empty')
+        return 1
+    header = lines[0].split(',')
+    if header != EXPECTED_HEADER:
+        print('FAIL: header mismatch: ' + repr(header))
+        return 1
+    body = [ln.split(',') for ln in lines[1:]]
+    if len(body) != len(expected):
+        print('FAIL: row count %d != expected %d' % (len(body), len(expected)))
+        return 1
+    ok = True
+    for i, (act, exp) in enumerate(zip(body, expected)):
+        for col in EXPECTED_HEADER:
+            if not close(act[EXPECTED_HEADER.index(col)], exp[col]):
+                print('FAIL row %d col %s: %r != %r' % (i, col, act[EXPECTED_HEADER.index(col)], exp[col]))
+                ok = False
+    if ok:
+        print('PASS: %d rows match source-derived table; header exact' % len(body))
+        return 0
+    return 1
+
+
+if __name__ == '__main__':
+    sys.exit(main())