Initial Pi code for public lookup api

src/officesense_pi/prisma/migrations/20260513184903_init/migration.sql

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+-- CreateTable
+CREATE TABLE "User" (
+    "id" TEXT NOT NULL PRIMARY KEY,
+    "firstName" TEXT NOT NULL,
+    "lastName" TEXT NOT NULL,
+    "faceEmbedding" BLOB NOT NULL
+);
+
+-- CreateTable
+CREATE TABLE "Tag" (
+    "id" TEXT NOT NULL PRIMARY KEY,
+    "userId" TEXT NOT NULL,
+    CONSTRAINT "Tag_userId_fkey" FOREIGN KEY ("userId") REFERENCES "User" ("id") ON DELETE RESTRICT ON UPDATE CASCADE
+);
+
+-- CreateIndex
+CREATE UNIQUE INDEX "Tag_userId_key" ON "Tag"("userId");

src/officesense_pi/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"

src/officesense_pi/prisma/schema.prisma

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+generator client {
+  provider = "prisma-client"
+  output   = "../src/generated/prisma"
+}
+
+datasource db {
+  provider = "sqlite"
+}
+
+model User {
+  id            String  @id @default(uuid())
+  firstName     String
+  lastName      String
+  faceEmbedding Bytes?
+  tag           Tag?
+}
+
+model Tag {
+  id     String @id @default(uuid())
+  userId String @unique
+  user   User   @relation(fields: [userId], references: [id])
+}