chore(ci): add PR lint workflow and SPDX header pre-commit hook

[sgopinath1]

Add pr-lint.yml to enforce conventional commit PR titles and run check-license-headers.sh on all tracked Rust, shell, and Dockerfile sources.

Add scripts/check-license-headers.sh and opt-in .githooks/pre-commit (cargo fmt + staged header check).

Apply AMD Apache-2.0 SPDX headers across the codebase so the new checks pass.

[Copilot]

Pull request overview

This PR adds automated enforcement for PR title conventions and SPDX license headers, plus a local pre-commit hook to keep formatting and headers compliant.

Changes:

• Add a GitHub Actions workflow to validate PR titles against a conventional-commits-style regex and to check SPDX headers.
• Add scripts/check-license-headers.sh and a .githooks/pre-commit hook (cargo fmt + staged header check).
• Add AMD Apache-2.0 SPDX headers across Rust sources, shell scripts, and Dockerfiles.

Reviewed changes

Copilot reviewed 44 out of 44 changed files in this pull request and generated 2 comments.

Show a summary per file

File	Description
scripts/check-license-headers.sh	New script to verify SPDX header presence in tracked source files (but currently misses nested Dockerfiles due to pathspec globbing).
.github/workflows/pr-lint.yml	Adds PR title conventional format check and CI SPDX header check.
.githooks/pre-commit	Adds local hook to run cargo fmt --check and header checks on staged files (but currently misses nested Dockerfiles due to pathspec globbing).
deploy/docker/gpuaas-entrypoint.sh	Adds SPDX/copyright header.
deploy/docker/Dockerfile.session	Adds SPDX/copyright header.
deploy/docker/Dockerfile.frontend	Adds SPDX/copyright header.
deploy/docker/Dockerfile.api	Adds SPDX/copyright header.
crates/spur-cloud-common/src/lib.rs	Adds SPDX/copyright header.
crates/spur-cloud-common/src/gpu_types.rs	Adds SPDX/copyright header.
crates/spur-cloud-common/src/session_types.rs	Adds SPDX/copyright header.
crates/spur-cloud-api/src/main.rs	Adds SPDX/copyright header.
crates/spur-cloud-api/src/config.rs	Adds SPDX/copyright header.
crates/spur-cloud-api/src/state.rs	Adds SPDX/copyright header.
crates/spur-cloud-api/src/update.rs	Adds SPDX/copyright header.
crates/spur-cloud-api/src/spur_client.rs	Adds SPDX/copyright header.
crates/spur-cloud-api/src/auth/mod.rs	Adds SPDX/copyright header.
crates/spur-cloud-api/src/auth/github.rs	Adds SPDX/copyright header.
crates/spur-cloud-api/src/auth/jwt.rs	Adds SPDX/copyright header.
crates/spur-cloud-api/src/auth/middleware.rs	Adds SPDX/copyright header.
crates/spur-cloud-api/src/auth/oidc_common.rs	Adds SPDX/copyright header.
crates/spur-cloud-api/src/auth/okta.rs	Adds SPDX/copyright header.
crates/spur-cloud-api/src/auth/principal.rs	Adds SPDX/copyright header.
crates/spur-cloud-api/src/db/mod.rs	Adds SPDX/copyright header.
crates/spur-cloud-api/src/db/billing_repo.rs	Adds SPDX/copyright header.
crates/spur-cloud-api/src/db/migrations.rs	Adds SPDX/copyright header.
crates/spur-cloud-api/src/db/session_repo.rs	Adds SPDX/copyright header.
crates/spur-cloud-api/src/db/ssh_key_repo.rs	Adds SPDX/copyright header.
crates/spur-cloud-api/src/db/user_repo.rs	Adds SPDX/copyright header.
crates/spur-cloud-api/src/models/mod.rs	Adds SPDX/copyright header.
crates/spur-cloud-api/src/models/session.rs	Adds SPDX/copyright header.
crates/spur-cloud-api/src/models/user.rs	Adds SPDX/copyright header.
crates/spur-cloud-api/src/routes/mod.rs	Adds SPDX/copyright header.
crates/spur-cloud-api/src/routes/admin.rs	Adds SPDX/copyright header.
crates/spur-cloud-api/src/routes/auth.rs	Adds SPDX/copyright header.
crates/spur-cloud-api/src/routes/billing.rs	Adds SPDX/copyright header.
crates/spur-cloud-api/src/routes/gpus.rs	Adds SPDX/copyright header.
crates/spur-cloud-api/src/routes/health.rs	Adds SPDX/copyright header.
crates/spur-cloud-api/src/routes/sessions.rs	Adds SPDX/copyright header.
crates/spur-cloud-api/src/routes/users.rs	Adds SPDX/copyright header.
crates/spur-cloud-api/src/routes/ws.rs	Adds SPDX/copyright header.
crates/spur-cloud-api/src/ssh/mod.rs	Adds SPDX/copyright header.
crates/spur-cloud-api/src/ssh/service_manager.rs	Adds SPDX/copyright header.
crates/spur-cloud-api/src/terminal/mod.rs	Adds SPDX/copyright header.
crates/spur-cloud-api/src/terminal/ws_handler.rs	Adds SPDX/copyright header.

---

💡 Add Copilot custom instructions for smarter, more guided reviews. Learn how to get started.