Restringe pattern ops sidekiq_failure per evitare falsi allarmi.

Non segnala più WARN generici come delete_path failed; solo job ActiveJob/Sidekiq realmente falliti.

Co-authored-by: Cursor <cursoragent@cursor.com>

backend/config/ops_log_patterns.yml

@@ -10,7 +10,8 @@ patterns:
     regex: 'PG::(ConnectionBad|UnableToSend)'
   - name: sidekiq_failure
     severity: warning
-    regex: 'WARN.*fail'
+    # Job Sidekiq/ActiveJob falliti — non matchare WARN generici tipo "delete_path failed"
+    regex: '(Error performing .+Job \(Job ID:|Job raised exception)'
   - name: fatal_error
     severity: critical
     regex: '\bFATAL\b'

backend/spec/services/ops/log_pattern_matcher_sidekiq_spec.rb

@@ -0,0 +1,26 @@
+require "rails_helper"
+
+RSpec.describe Ops::LogPatternMatcher, "sidekiq_failure" do
+  subject(:matcher) { described_class.new }
+
+  it "rileva un job ActiveJob fallito" do
+    log = "E, [2026-06-17T10:00:00] ERROR -- : Error performing Recordings::UploadJob (Job ID: abc) in 12ms"
+
+    names = matcher.scan(log).map(&:name).grep(/sidekiq_failure/)
+    expect(names).to eq(["sidekiq_failure"])
+  end
+
+  it "rileva Job raised exception (Sidekiq)" do
+    log = "W, [2026-06-17T10:00:00] WARN -- : Job raised exception"
+
+    names = matcher.scan(log).map(&:name).grep(/sidekiq_failure/)
+    expect(names).to eq(["sidekiq_failure"])
+  end
+
+  it "non rileva warning di cleanup MediaMTX" do
+    log = "W, [2026-06-17T21:19:52] WARN -- : [Recordings::UploadFromSession] delete_path: MediaMTX path delete failed: 404"
+
+    names = matcher.scan(log).map(&:name).grep(/sidekiq_failure/)
+    expect(names).to be_empty
+  end
+end