step 1: rename module chat-switchboard → switchboard-core

- go.mod module name
- All 714 import references across 289 Go files
- VERSION: 0.1.0
- CI DB names: switchboard_core_{ci,dev,test}
- Docker image: gobha/switchboard-core
- Test fixtures: JWT issuer, repo names
- .env.example, docker-compose container name
- Compiles clean (go build exit 0)

server/handlers/workflow_instance_test.go

@@ -8,13 +8,13 @@ import (
 
 	"github.com/gin-gonic/gin"
 
-	"chat-switchboard/config"
-	authpkg "chat-switchboard/auth"
-	"chat-switchboard/database"
-	"chat-switchboard/middleware"
-	"chat-switchboard/store"
-	postgres "chat-switchboard/store/postgres"
-	sqlite "chat-switchboard/store/sqlite"
+	"switchboard-core/config"
+	authpkg "switchboard-core/auth"
+	"switchboard-core/database"
+	"switchboard-core/middleware"
+	"switchboard-core/store"
+	postgres "switchboard-core/store/postgres"
+	sqlite "switchboard-core/store/sqlite"
 )
 
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