fix(migrations): baseline existing tables + add 0003 for missing suggestions table

- entrypoint.sh: resolve --applied 0000 and 0001 before deploying,
  so prisma skips them and only runs 0002 (message_logs) and 0003 (suggestions)
- migration 0003: CREATE TABLE IF NOT EXISTS suggestions

Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>

backend/entrypoint.sh

@@ -3,15 +3,20 @@
 DATABASE_URL="postgresql://prosapp_user:ProsappPass123!@wkuvmdsy39relyhnugk87eqb:5432/prosapp"
 export DATABASE_URL
 
+PRISMA="node_modules/.bin/prisma"
+
 echo "=== ProsApp Backend Starting ==="
 
-echo "Running migrations..."
-node_modules/.bin/prisma migrate deploy
-MIGRATE_STATUS=$?
+# Baseline: mark existing migrations as applied without running their SQL.
+# This creates _prisma_migrations if it doesn't exist, then records each
+# migration so prisma migrate deploy skips them and only runs new ones.
+echo "Baselining existing migrations..."
+$PRISMA migrate resolve --applied "0000_init" 2>/dev/null || true
+$PRISMA migrate resolve --applied "0001_add_rethus_code" 2>/dev/null || true
 
-if [ $MIGRATE_STATUS -ne 0 ]; then
-  echo "WARNING: migrations exited with status $MIGRATE_STATUS — starting server anyway"
-fi
+# Apply only new/pending migrations (0002, 0003, ...)
+echo "Applying pending migrations..."
+$PRISMA migrate deploy
 
 echo "Starting server..."
 exec node dist/main.js

backend/prisma/migrations/0003_add_suggestions/migration.sql

@@ -0,0 +1,9 @@
+-- CreateTable
+CREATE TABLE IF NOT EXISTS "suggestions" (
+    "id" UUID NOT NULL DEFAULT uuid_generate_v4(),
+    "name" VARCHAR(255),
+    "message" TEXT NOT NULL,
+    "created_at" TIMESTAMPTZ(6) NOT NULL DEFAULT CURRENT_TIMESTAMP,
+
+    CONSTRAINT "suggestions_pkey" PRIMARY KEY ("id")
+);