Give each Ceph HEALTH_WARN its own dedup ticket (#112)

Every HEALTH_WARN other than four known types hashed with an empty
subtype, so unrelated cluster warnings (noout, nearfull, mon space,
insecure keys, MDS standby, ...) all collapsed onto one ticket. Each run
the reported warnings overwrote its title in turn, writing ~47k
title-flip audit rows on ticket 221040637.

Unknown warnings now key on Ceph's health-check code when the reporter
sends one (optional `check_code` payload field, e.g. OSDMAP_FLAGS), else
on the warning text before its first colon with counts stripped, so
"3 pool(s) nearfull" and "4 pool(s) nearfull" stay one ticket. Known
subtypes hash exactly as before.

Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>
Claude-Session: https://claude.ai/code/session_01MGDKHiU5RJdo3dqQUDow3X

create_ticket_api.php

@@ -159,6 +159,23 @@ function generateTicketHash($data)
             }
         } elseif (stripos($title, 'HEALTH_ERR') !== false) {
             $issueSubtype = 'health_err';
+        } else {
+            // Any other warning gets its own ticket. Previously every other
+            // HEALTH_WARN shared one empty subtype, so unrelated warnings
+            // (noout, nearfull, insecure keys, ...) collapsed onto a single
+            // ticket and overwrote its title in turn every run (#112).
+            // Prefer Ceph's own health-check code when the reporter sends
+            // it; otherwise key on the warning text with counts stripped.
+            $checkCode = isset($data['check_code']) && is_string($data['check_code']) ? $data['check_code'] : '';
+            if ($checkCode !== '' && preg_match('/^[A-Z0-9_]{1,64}$/', $checkCode)) {
+                $issueSubtype = 'check_' . strtolower($checkCode);
+            } elseif (preg_match('/HEALTH_WARN:\s*([^\[]+)/i', $title, $warnMatch)) {
+                $warnText = strtolower(explode(':', $warnMatch[1])[0]);
+                $warnText = trim(preg_replace('/[^a-z]+/', '_', $warnText), '_');
+                if ($warnText !== '') {
+                    $issueSubtype = 'warn_' . $warnText;
+                }
+            }
         }
     }