connection profiles and ssh key encryption

backend/prisma/migrations/20260301100000_add_profiles/migration.sql

@@ -0,0 +1,23 @@
+-- CreateTable
+CREATE TABLE "profiles" (
+    "id" TEXT NOT NULL,
+    "name" TEXT NOT NULL,
+    "username" TEXT,
+    "encryptedPassword" TEXT,
+    "privateKey" TEXT,
+    "domain" TEXT,
+    "clipboardEnabled" BOOLEAN,
+    "userId" TEXT NOT NULL,
+    "createdAt" TIMESTAMP(3) NOT NULL DEFAULT CURRENT_TIMESTAMP,
+
+    CONSTRAINT "profiles_pkey" PRIMARY KEY ("id")
+);
+
+-- AddForeignKey (profiles → users)
+ALTER TABLE "profiles" ADD CONSTRAINT "profiles_userId_fkey" FOREIGN KEY ("userId") REFERENCES "users"("id") ON DELETE CASCADE ON UPDATE CASCADE;
+
+-- AlterTable (connections: add profileId)
+ALTER TABLE "connections" ADD COLUMN "profileId" TEXT;
+
+-- AddForeignKey (connections → profiles)
+ALTER TABLE "connections" ADD CONSTRAINT "connections_profileId_fkey" FOREIGN KEY ("profileId") REFERENCES "profiles"("id") ON DELETE SET NULL ON UPDATE CASCADE;

backend/prisma/migrations/20260301110000_profile_protocol/migration.sql

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+-- AlterTable: add protocol column (default 'ssh' for any existing rows)
+ALTER TABLE "profiles" ADD COLUMN "protocol" TEXT NOT NULL DEFAULT 'ssh';