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/knowledge/embedder.go

@@ -5,9 +5,9 @@ import (
 	"fmt"
 	"log"
 
-	"chat-switchboard/models"
-	"chat-switchboard/roles"
-	"chat-switchboard/store"
+	"switchboard-core/models"
+	"switchboard-core/roles"
+	"switchboard-core/store"
 )
 
 // ── Configuration ────────────────────────────

server/knowledge/ingest.go

@@ -9,10 +9,10 @@ import (
 	"sync"
 	"time"
 
-	"chat-switchboard/models"
-	"chat-switchboard/notifications"
-	"chat-switchboard/storage"
-	"chat-switchboard/store"
+	"switchboard-core/models"
+	"switchboard-core/notifications"
+	"switchboard-core/storage"
+	"switchboard-core/store"
 )
 
 // ── Configuration ────────────────────────────