no-mistakes(review): fix duplicate-000 probe capture at assignment boundary

scripts/zulip-monitor.sh

@@ -41,7 +41,9 @@ notify() {
 # ── Global: Zulip Server ──
 SERVER_CODE=$(curl -s -o /dev/null -w "%{http_code}" --connect-timeout 10 \
   https://chat.sysloggh.net/api/v1/server_settings \
-  -u 'abiba-bot@chat.sysloggh.net:cKTDMZAPW08dk3zl05sStzO7HRztzyn8' 2>/dev/null || echo "000")
+  -u 'abiba-bot@chat.sysloggh.net:cKTDMZAPW08dk3zl05sStzO7HRztzyn8' 2>/dev/null) || SERVER_CODE="000"
+SERVER_CODE=$(printf '%s' "$SERVER_CODE" | tr -d '[:space:]')
+[ -n "$SERVER_CODE" ] || SERVER_CODE="000"
 if [ "$SERVER_CODE" != "200" ]; then
   notify "🔴" "Zulip server returned HTTP $SERVER_CODE"
   ISSUES=$((ISSUES + 1))
@@ -59,7 +61,9 @@ fi
 # zulip.connected is a PROBE FAILURE: it alerts and NEVER calls pm2 restart.
 # pm2 restart runs ONLY on affirmative zulip.connected=false.
 # -- abiba-leg-start (verbatim-extracted by tests/zulip-monitor-abiba.sh)
-PI_HTTP=$(curl -s -o /dev/null --connect-timeout 5 --max-time 10 -w '%{http_code}' http://localhost:9200/health 2>/dev/null || echo "000")
+PI_HTTP=$(curl -s -o /dev/null --connect-timeout 5 --max-time 10 -w '%{http_code}' http://localhost:9200/health 2>/dev/null) || PI_HTTP="000"
+PI_HTTP=$(printf '%s' "$PI_HTTP" | tr -d '[:space:]')
+[ -n "$PI_HTTP" ] || PI_HTTP="000"
 PI_BODY=$(curl -s --connect-timeout 5 --max-time 10 http://localhost:9200/health 2>/dev/null || true)
 PI_STATE=$(printf '%s' "$PI_BODY" | python3 -c '
 import sys, json
@@ -156,7 +160,9 @@ fi
 
 # ── Platform C: Agent Zero (kagentz) ──
 AZ_A2A_CODE=$(ssh -o StrictHostKeyChecking=no -o ConnectTimeout=5 root@192.168.68.14 \
-  "docker exec agent-zero curl -s --connect-timeout 5 -o /dev/null -w '%{http_code}' http://127.0.0.1:80/a2a/ 2>/dev/null" 2>/dev/null || echo "000")
+  "docker exec agent-zero curl -s --connect-timeout 5 -o /dev/null -w '%{http_code}' http://127.0.0.1:80/a2a/ 2>/dev/null" 2>/dev/null) || AZ_A2A_CODE="000"
+AZ_A2A_CODE=$(printf '%s' "$AZ_A2A_CODE" | tr -d '[:space:]')
+[ -n "$AZ_A2A_CODE" ] || AZ_A2A_CODE="000"
 
 if [ "$AZ_A2A_CODE" = "000" ]; then
   notify "🔴" "kagentz A2A server DOWN (connection failed)"

tests/test_mumuni_monitor_removal.py

@@ -89,7 +89,7 @@ case "$host" in
     esac ;;
   192.168.68.14)
     case "$cmd" in
-      *"/a2a/"*) printf '%s' "$AZ_A2A_CODE" ;;
+      *"/a2a/"*) printf '%s' "$AZ_A2A_CODE"; exit "$AZ_A2A_EXIT" ;;
     esac ;;
   *)
     printf 'UNEXPECTED-SSH-HOST %s\n' "$host" >> "$RECORD_DIR/unexpected-ssh" ;;
@@ -121,7 +121,7 @@ def _write_exec(path: pathlib.Path, body: str) -> None:
 
 
 def _run_monitor(tmp_path, *, tanko_svc="active", tanko_http="200",
-                 az_a2a_code="401"):
+                 az_a2a_code="401", az_a2a_exit=0):
     """Run the shipped monitor in a sandbox; return (proc, record_dir, log_path).
 
     Only the LOG constant is rewritten (to keep the run inside the worktree).
@@ -150,6 +150,7 @@ def _run_monitor(tmp_path, *, tanko_svc="active", tanko_http="200",
         "TANKO_SVC": tanko_svc,
         "TANKO_HTTP": tanko_http,
         "AZ_A2A_CODE": az_a2a_code,
+        "AZ_A2A_EXIT": str(az_a2a_exit),
         "PI_HTTP": "200",
         "PI_BODY": CONNECTED_FIXTURE.read_text(),
         "SERVER_HTTP": "200",
@@ -221,6 +222,21 @@ def test_unexpected_a2a_status_is_an_issue_not_healthy(tmp_path):
     assert "kagentz A2A server answered HTTP 500" in proc.stdout
 
 
+def test_a2a_connection_failure_is_down_not_unexpected(tmp_path):
+    # curl prints the http_code before failing, so the ssh stub exits non-zero
+    # with "000" on stdout — exercising the real outage path.
+    proc, record, log_path = _run_monitor(tmp_path, az_a2a_code="000",
+                                          az_a2a_exit=7)
+    assert proc.returncode == 0, proc.stderr
+    log = log_path.read_text()
+
+    assert "kagentz: ❌ A2A down (HTTP 000)" in log
+    assert "kagentz: ✅ A2A alive" not in log
+    assert "unexpected" not in log
+    assert "Result: 🔴 1 issue(s) found" in log
+    assert "kagentz A2A server DOWN (connection failed)" in proc.stdout
+
+
 # ── scripts/daily-infra-report.py: behavioral digest checks ──────────
 
 @pytest.fixture(scope="module")