feat(jar): add OCI registry pull for JAR artifacts with backward compat

- Add jarRef and jarPullSecret fields to FlinkJob CRD (jarUri/basicAuth deprecated)
- OCI pull via go-containerregistry with dual auth (K8s pull secret + env vars)
- Media type validation on pulled layers
- Atomic status patches with runningJarRef/runningJarDigest tracking
- NeedsUpgrade/RunningRef/RunningRefPatchData domain helpers
- README with usage guide, pushing JARs, and GitHub Actions CI/CD workflow
- CONTEXT.md domain glossary

go.mod

@@ -5,6 +5,7 @@ go 1.23.2
 require (
 	github.com/danielgtaylor/huma/v2 v2.27.0
 	github.com/gofiber/fiber/v2 v2.52.6
+	github.com/google/go-containerregistry v0.20.3
 	github.com/logi-camp/go-flink-client v0.2.2
 	github.com/samber/lo v1.47.0
 	go.uber.org/zap v1.27.0
@@ -14,6 +15,10 @@ require (
 
 require (
 	github.com/andybalholm/brotli v1.1.1 // indirect
+	github.com/containerd/stargz-snapshotter/estargz v0.16.3 // indirect
+	github.com/docker/cli v27.5.0+incompatible // indirect
+	github.com/docker/distribution v2.8.3+incompatible // indirect
+	github.com/docker/docker-credential-helpers v0.8.2 // indirect
 	github.com/emicklei/go-restful/v3 v3.11.0 // indirect
 	github.com/evanphx/json-patch/v5 v5.9.0 // indirect
 	github.com/go-openapi/jsonpointer v0.21.0 // indirect
@@ -26,13 +31,19 @@ require (
 	github.com/klauspost/compress v1.17.11 // indirect
 	github.com/mailru/easyjson v0.7.7 // indirect
 	github.com/mattn/go-runewidth v0.0.16 // indirect
+	github.com/mitchellh/go-homedir v1.1.0 // indirect
 	github.com/munnerz/goautoneg v0.0.0-20191010083416-a7dc8b61c822 // indirect
+	github.com/opencontainers/go-digest v1.0.0 // indirect
+	github.com/opencontainers/image-spec v1.1.0 // indirect
 	github.com/rivo/uniseg v0.4.7 // indirect
+	github.com/sirupsen/logrus v1.9.3 // indirect
 	github.com/valyala/bytebufferpool v1.0.0 // indirect
 	github.com/valyala/fasthttp v1.58.0 // indirect
 	github.com/valyala/tcplisten v1.0.0 // indirect
+	github.com/vbatts/tar-split v0.11.6 // indirect
 	golang.org/x/exp v0.0.0-20240112132812-db7319d0e0e3 // indirect
-	google.golang.org/protobuf v1.35.1 // indirect
+	golang.org/x/sync v0.10.0 // indirect
+	google.golang.org/protobuf v1.36.3 // indirect
 )
 
 require (
@@ -53,7 +64,7 @@ require (
 	github.com/x448/float16 v0.8.4 // indirect
 	go.uber.org/multierr v1.11.0 // indirect
 	golang.org/x/net v0.31.0 // indirect
-	golang.org/x/oauth2 v0.21.0 // indirect
+	golang.org/x/oauth2 v0.25.0 // indirect
 	golang.org/x/sys v0.29.0 // indirect
 	golang.org/x/term v0.26.0 // indirect
 	golang.org/x/text v0.20.0 // indirect
@@ -61,7 +72,7 @@ require (
 	gopkg.in/inf.v0 v0.9.1 // indirect
 	gopkg.in/natefinch/lumberjack.v2 v2.2.1
 	gopkg.in/yaml.v3 v3.0.1 // indirect
-	k8s.io/api v0.31.3 // indirect
+	k8s.io/api v0.31.3
 	k8s.io/klog/v2 v2.130.1 // indirect
 	k8s.io/kube-openapi v0.0.0-20241127205056-99599406b04f // indirect
 	k8s.io/utils v0.0.0-20241104163129-6fe5fd82f078 // indirect