fix: feat: gardener escalation recipes — pattern-matched playbooks for CI failures (#68)

Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>

gardener/recipes/flaky-test.toml

@@ -0,0 +1,20 @@
+# gardener/recipes/flaky-test.toml — CI fails intermittently
+#
+# Trigger: Test step fails + multiple CI attempts (same step, different output)
+# Playbook: retrigger CI (max 2x), quarantine test if still failing
+
+name        = "flaky-test"
+description = "CI fails intermittently — same step fails across multiple attempts"
+priority    = 30
+
+[trigger]
+step_name    = '(?i)test'
+min_attempts = 2
+
+[[playbook]]
+action      = "retrigger-ci"
+description = "Retrigger CI (max 2 retries)"
+
+[[playbook]]
+action      = "quarantine-test"
+description = "If still failing, quarantine test and create fix issue"