Wire full Better Auth flow with feature flags + callback normalizer (#268)

Co-authored-by: Claude Opus 4.7 (1M context) <noreply@anthropic.com>

Author: khanhduyvt0101

.env.example

@@ -0,0 +1,15 @@
+OPENKITTEN_LOCAL=
+
+OPENKITTEN_MAGIC_LINK_ENABLED=
+OPENKITTEN_PASSKEY_ENABLED=
+
+GOOGLE_CLIENT_ID=
+GOOGLE_CLIENT_SECRET=
+
+GITHUB_CLIENT_ID=
+GITHUB_CLIENT_SECRET=
+
+SMTP_HOST=
+SMTP_USER=
+SMTP_PASS=
+SMTP_FROM=

.vscode/settings.json

@@ -13,6 +13,7 @@
     "**/*.db-shm": true,
     "**/dist": true,
     "**/coverage": true,
-    "**/.vendor": true
+    "**/.vendor": true,
+    "**/.react-router": true
   }
 }

bun.lock

@@ -0,0 +1,17 @@
+CREATE TABLE "passkey" (
+	"id" text PRIMARY KEY NOT NULL,
+	"name" text,
+	"public_key" text NOT NULL,
+	"user_id" text NOT NULL,
+	"credential_id" text NOT NULL,
+	"counter" integer NOT NULL,
+	"device_type" text NOT NULL,
+	"backed_up" boolean NOT NULL,
+	"transports" text,
+	"created_at" timestamp,
+	"aaguid" text
+);
+--> statement-breakpoint
+ALTER TABLE "passkey" ADD CONSTRAINT "passkey_user_id_user_id_fk" FOREIGN KEY ("user_id") REFERENCES "public"."user"("id") ON DELETE cascade ON UPDATE no action;--> statement-breakpoint
+CREATE INDEX "passkey_userId_idx" ON "passkey" USING btree ("user_id");--> statement-breakpoint
+CREATE INDEX "passkey_credentialID_idx" ON "passkey" USING btree ("credential_id");