ci: enforce schema.prisma sync across all copies

Add ci_cd/check_schema_sync.sh that diffs the three schema.prisma files
(repo root, litellm/proxy/, litellm-proxy-extras/) and exits non-zero if
any diverge. Wire it into the linting workflow and expose it as a
make check-schema-sync target (included in make lint).

.github/workflows/test-linting.yml

@@ -74,3 +74,7 @@ jobs:
     - name: Check import safety
       run: |
         poetry run python -c "from litellm import *" || (echo '🚨 import failed, this means you introduced unprotected imports! 🚨'; exit 1)
+
+    - name: Check schema.prisma files are in sync
+      run: |
+        bash ci_cd/check_schema_sync.sh

Makefile

@@ -128,11 +128,14 @@ check-circular-imports: install-dev
 check-import-safety: install-dev
 	@poetry run python -c "from litellm import *; print('[from litellm import *] OK! no issues!');" || (echo '🚨 import failed, this means you introduced unprotected imports! 🚨'; exit 1)
 
+
+check-schema-sync:
+	bash ci_cd/check_schema_sync.sh
 # Combined linting (matches test-linting.yml workflow)
-lint: format-check lint-ruff lint-mypy check-circular-imports check-import-safety
+lint: format-check lint-ruff lint-mypy check-circular-imports check-import-safety check-schema-sync
 
 # Faster linting for local development (only checks changed code)
-lint-dev: lint-format-changed lint-mypy check-circular-imports check-import-safety
+lint-dev: lint-format-changed lint-mypy check-circular-imports check-import-safety check-schema-sync
 
 # Testing targets
 test:

ci_cd/check_schema_sync.sh

@@ -0,0 +1,37 @@
+#!/usr/bin/env bash
+# check_schema_sync.sh
+# Ensures all three copies of schema.prisma are identical.
+# Exits non-zero if any differ.
+
+set -euo pipefail
+
+SOURCE="schema.prisma"
+COPY1="litellm/proxy/schema.prisma"
+COPY2="litellm-proxy-extras/litellm_proxy_extras/schema.prisma"
+
+FAILED=0
+
+diff_files() {
+    local a="$1"
+    local b="$2"
+    if ! diff -q "$a" "$b" > /dev/null 2>&1; then
+        echo "FAIL: $a and $b are out of sync."
+        diff "$a" "$b" || true
+        FAILED=1
+    else
+        echo "OK: $a and $b match."
+    fi
+}
+
+diff_files "$SOURCE" "$COPY1"
+diff_files "$SOURCE" "$COPY2"
+
+if [ "$FAILED" -ne 0 ]; then
+    echo ""
+    echo "schema.prisma files are out of sync. The source of truth is '$SOURCE'."
+    echo "Copy it to the other locations and commit the result."
+    exit 1
+fi
+
+echo ""
+echo "All schema.prisma files are in sync."