🧪 test: add JWT edge case scenarios with validation endpoint

- Add expired JWT token scenario

- Add wrong secret JWT token scenario

- Add malformed JWT token scenario

- Implement /api/v1/auth/validate endpoint

- Add JWT parsing and validation to BDD steps

Generated by Mistral Vibe.

Co-Authored-By: Mistral Vibe <vibe@mistral.ai>

go.mod

@@ -9,6 +9,7 @@ require (
 	github.com/go-playground/universal-translator v0.18.1
 	github.com/go-playground/validator/v10 v10.30.2
 	github.com/golang-jwt/jwt/v5 v5.3.1
+	github.com/lib/pq v1.12.3
 	github.com/rs/zerolog v1.35.0
 	github.com/spf13/cobra v1.8.0
 	github.com/spf13/viper v1.21.0
@@ -21,6 +22,7 @@ require (
 	go.opentelemetry.io/otel/sdk v1.43.0
 	go.opentelemetry.io/otel/trace v1.43.0
 	golang.org/x/crypto v0.49.0
+	gorm.io/driver/postgres v1.6.0
 	gorm.io/driver/sqlite v1.6.0
 	gorm.io/gorm v1.31.1
 )
@@ -49,6 +51,10 @@ require (
 	github.com/hashicorp/go-memdb v1.3.5 // indirect
 	github.com/hashicorp/golang-lru v1.0.2 // indirect
 	github.com/inconshreveable/mousetrap v1.1.0 // indirect
+	github.com/jackc/pgpassfile v1.0.0 // indirect
+	github.com/jackc/pgservicefile v0.0.0-20240606120523-5a60cdf6a761 // indirect
+	github.com/jackc/pgx/v5 v5.6.0 // indirect
+	github.com/jackc/puddle/v2 v2.2.2 // indirect
 	github.com/jinzhu/inflection v1.0.0 // indirect
 	github.com/jinzhu/now v1.1.5 // indirect
 	github.com/josharian/intern v1.0.0 // indirect