* feat(node): add support for SvelteKit with adapter-auto
- Configure SvelteKit builds to force adapter-node output via GCP_BUILDPACKS variable
- Set appropriate start command for SvelteKit projects using adapter-auto
- Add test coverage for SvelteKit detection and configuration
Generated-by: aiautocommit
* test(examples): replace justBuild flags with specific test assertions
Generated-by: aiautocommit
* docs(guides): remove obsolete justBuild reference from developing-locally guide
Generated-by: aiautocommit
* refactor(tests): remove JustBuild test option and logic
Generated-by: aiautocommit
* refactor(node): update SvelteKit adapter-auto comment reasoning
Generated-by: aiautocommit
* feat(core): add start command and build variables to sveltekit build plan
Generated-by: aiautocommit
* chore: exclude tmp directory when staging updated snapshots
Generated-by: aiautocommit
* test: add HTTP checks
* test: http checks on docker containers
* test: removing justBuild if we have an http check
* test: missing bin/rails
* fix: warning if bin/rails dne
* test: allow json5 in test.json
* test: add justBuild for svelte
