Phase 1 data layer: calc/fmt/alarms + 31 CPython tests + live gateway P1 smoke

pytest 31/31. In-gateway end-to-end: 559 activations correlated (uuid mode), 3 chatterers,
34 fleeting, 1 flood, health F(22) on the deliberately-bad sim plant. Gate G1 green.

Co-Authored-By: Claude Fable 5 <noreply@anthropic.com>

tests/test_fmt.py

@@ -0,0 +1,94 @@
+import os
+import time
+
+from PrimeControls import calc, fmt
+
+H = 3600000
+M = 60000
+T0 = 1784200000000
+
+
+def test_dur_num_pct():
+    assert fmt.dur(None) == "--"
+    assert fmt.dur(42000) == "42s"
+    assert fmt.dur(90 * M) == "1h 30m"
+    assert fmt.dur(26 * H) == "1d 2h"
+    assert fmt.num(None) == "--"
+    assert fmt.num(1234567) == "1,234,567"
+    assert fmt.num(12.345, 1) == "12.3"
+    assert fmt.pct(34.2) == "34%"
+    assert fmt.pct(34.2, 0, True) == "+34%"
+
+
+def test_delta_chip():
+    assert fmt.delta_chip(calc.delta(200, 100))["arrow"] == fmt.ARROW_UP
+    assert fmt.delta_chip(calc.delta(50, 100))["arrow"] == fmt.ARROW_DOWN
+    assert fmt.delta_chip(calc.delta(10, 0))["text"] == "new"
+    assert fmt.delta_chip(None)["text"] == "--"
+
+
+def bundle_with(rows=None, status=None):
+    return calc.build_bundle(rows or [], status or [], 0, T0, T0 + 4 * H, T0 + 4 * H)
+
+
+def lifecycle(eid, src, t, dur_ms=None, ack_ms=None, prio=3):
+    lvl, name = calc.normalize_priority(prio)
+    rows = [{"event_id": eid, "source": src, "display_path": "", "priority": lvl,
+             "priority_name": name, "state": "active", "ts": t, "is_system": False,
+             "ack_user": None}]
+    if dur_ms:
+        rows.append(dict(rows[0], state="clear", ts=t + dur_ms))
+    return rows
+
+
+def test_insights_fallback_and_cap():
+    b = bundle_with()
+    ins = fmt.insights(b)
+    assert len(ins) == 1 and ins[0]["severity"] == 3
+    assert "No alarm events" in ins[0]["text"]
+
+
+def test_insights_chatter_and_flood_fire():
+    rows = []
+    for i in range(100):  # ~25/hr over the 4h window, median gap 50s
+        rows += lifecycle("c%d" % i, "prov:default:/tag:P/A/Chat:/alm:Chat",
+                          T0 + i * 50000, dur_ms=8000)
+    for i in range(15):
+        rows += lifecycle("f%d" % i, "prov:default:/tag:P/B/F%d:/alm:F%d" % (i, i),
+                          T0 + 2 * H + i * 30000, dur_ms=M)
+    b = bundle_with(rows)
+    b["insights"] = fmt.insights(b)
+    texts = " | ".join(i["text"] for i in b["insights"])
+    assert "chatter" in texts.lower()
+    assert "flood" in texts.lower()
+    assert len(b["insights"]) <= 5
+
+
+def test_shift_bounds_grid():
+    os.environ["TZ"] = "UTC"
+    time.tzset()
+    # Thu Jul 16 2026 14:20 UTC
+    now = 1784211600000 + 20 * M
+    sb = fmt.shift_bounds(now, 8, 0)
+    cs, ce = sb["current"]
+    ps, pe = sb["previous"]
+    assert ce - cs == 8 * H and pe == cs
+    lt = time.localtime(cs / 1000.0)
+    assert lt.tm_hour in (0, 8, 16)
+    sb2 = fmt.shift_bounds(now, 12, 6)
+    lt2 = time.localtime(sb2["current"][0] / 1000.0)
+    assert lt2.tm_hour in (6, 18)
+
+
+def test_shift_report_sections():
+    rows = []
+    for i in range(10):
+        rows += lifecycle("b%d" % i, "prov:default:/tag:P/A/T%d:/alm:T%d" % (i, i),
+                          T0 + i * 10 * M, dur_ms=M)
+    b = bundle_with(rows)
+    b["insights"] = fmt.insights(b)
+    rep = fmt.shift_report(b, "Thu 6:00 AM - Thu 2:00 PM")
+    heads = [s["heading"] for s in rep["sections"]]
+    assert any("SHIFT REPORT" in h for h in heads)
+    assert any("KPIs" in h for h in heads)
+    assert "Activations" in rep["text"]