Add Prisma integration with SQLite, update dependencies, and configure Svelte

prisma/migrations/20251124201656_init/migration.sql

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+-- CreateTable
+CREATE TABLE "Year" (
+    "year" INTEGER NOT NULL PRIMARY KEY AUTOINCREMENT
+);
+
+-- CreateTable
+CREATE TABLE "Person" (
+    "id" INTEGER NOT NULL PRIMARY KEY AUTOINCREMENT,
+    "name" TEXT NOT NULL,
+    "yearId" INTEGER NOT NULL,
+    CONSTRAINT "Person_yearId_fkey" FOREIGN KEY ("yearId") REFERENCES "Year" ("year") ON DELETE RESTRICT ON UPDATE CASCADE
+);
+
+-- CreateTable
+CREATE TABLE "Gift" (
+    "id" INTEGER NOT NULL PRIMARY KEY AUTOINCREMENT,
+    "name" TEXT NOT NULL,
+    "url" TEXT,
+    "description" TEXT,
+    "price" REAL,
+    "status" TEXT NOT NULL DEFAULT 'PLANNED',
+    "personId" INTEGER NOT NULL,
+    CONSTRAINT "Gift_personId_fkey" FOREIGN KEY ("personId") REFERENCES "Person" ("id") ON DELETE RESTRICT ON UPDATE CASCADE
+);

prisma/migrations/migration_lock.toml

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+# Please do not edit this file manually
+# It should be added in your version-control system (e.g., Git)
+provider = "sqlite"

prisma/schema.prisma

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+// This is your Prisma schema file,
+// learn more about it in the docs: https://pris.ly/d/prisma-schema
+
+generator client {
+  provider = "prisma-client-js"
+}
+
+datasource db {
+  provider = "sqlite"
+}
+
+model Year {
+  year Int @id
+
+  people Person[]
+}
+
+model Person {
+  id   Int    @id @default(autoincrement())
+  name String
+
+  yearId Int
+  year   Year @relation(fields: [yearId], references: [year])
+
+  gifts Gift[]
+}
+
+model Gift {
+  id          Int        @id @default(autoincrement())
+  name        String
+  url         String?
+  description String?
+  price       Float?
+  status      GiftStatus @default(PLANNED)
+
+  personId Int
+  person   Person @relation(fields: [personId], references: [id])
+}
+
+enum GiftStatus {
+  PLANNED
+  BUY
+  BOUGHT
+  WRAPPED
+  GIVEN
+}