K8s manifest hardening + new bluejay-infra-lint test project

Manifest hardening (per documented memories):
- apps/asterisk/deployment.yaml: dnsPolicy: None + explicit dnsConfig
  with ndots:2 to prevent CoreDNS *.iamworkin.lan template from
  hijacking external egress (downloads.asterisk.org).
- apps/fc-llm-bridge/fc-llm-bridge.yaml: same dnsConfig pattern for
  api.anthropic.com egress.
- apps/fc-ttsreader/fc-ttsreader.yaml: same dnsConfig pattern for
  huggingface.co model seeding.
- apps/fc-messageboard/fc-messageboard.yaml: tcpSocket probes
  (replacing httpGet /health) per "Probes against /health 404 when
  app has global auth middleware".
- apps/fc-signalcontrol/fc-signalcontrol.yaml: same tcpSocket probe
  fix.

New lint project:
- tests/bluejay-infra-lint/BluejayInfraLint.Tests.csproj — local-first
  lint test sweep for the recurring K8s gotchas in the fleet.
- tests/bluejay-infra-lint/FleetManifestLintTests.cs — 7 lint tests
  covering tcpSocket probes, dnsConfig presence on egress-heavy pods,
  IngressRoute/Service namespace alignment, image pull policy, etc.
- tests/bluejay-infra-lint/conftest.dev/ — matching conftest policies
  for environments with conftest/opa.
- .gitignore — adds bin/ + obj/ + DS_Store/swp.

README.md adds a "Local manifest lint" section with the canonical
test command, plus 4 new gotcha entries (IngressRoute namespace
split, public read-only host method allowlists, Traefik VIP netpol
backend ports, auth-safe probes).

Tests: 7 / 7 lint tests passed.

Co-Authored-By: Claude Opus 4.7 (1M context) <noreply@anthropic.com>

tests/bluejay-infra-lint/conftest.dev/05_statefulset_volumeclaim_defaults.rego

@@ -0,0 +1,23 @@
+package bluejayinfra.statefulset_volumeclaim_defaults
+
+deny[msg] {
+  input.kind == "StatefulSet"
+  count(object.get(input.spec, "volumeClaimTemplates", [])) > 0
+  object.get(input.spec, "podManagementPolicy", "") == ""
+  msg := sprintf("StatefulSet %s/%s is missing spec.podManagementPolicy", [input.metadata.namespace, input.metadata.name])
+}
+
+deny[msg] {
+  input.kind == "StatefulSet"
+  count(object.get(input.spec, "volumeClaimTemplates", [])) > 0
+  object.get(input.spec, "revisionHistoryLimit", 0) == 0
+  msg := sprintf("StatefulSet %s/%s is missing spec.revisionHistoryLimit", [input.metadata.namespace, input.metadata.name])
+}
+
+deny[msg] {
+  input.kind == "StatefulSet"
+  claim := input.spec.volumeClaimTemplates[_]
+  object.get(claim.spec, "volumeMode", "") != "Filesystem"
+  claim_name := object.get(claim.metadata, "name", "<unnamed>")
+  msg := sprintf("StatefulSet %s/%s volumeClaimTemplate %s is missing volumeMode: Filesystem", [input.metadata.namespace, input.metadata.name, claim_name])
+}