fix: add SPDX license headers to shell scripts in resources/ and .github/scripts/

[jigarkhwar]

Severity

low

Category

maintainability

Problem

resources/sbt-warmup.sh and .github/scripts/*.sh lack SPDX license headers. The repository uses Apache 2.0 (LICENSE file) but scripts don't declare it individually, creating ambiguity for OSS consumers.

Suggested solution

Add to top of each script:

# SPDX-License-Identifier: Apache-2.0

Acceptance criteria

• All .sh files have SPDX header
• CI lint enforces SPDX presence

Related files

• resources/sbt-warmup.sh
• .github/scripts/buildkit-build.sh
• .github/scripts/update-readme.sh

Estimated complexity

S