Remove .cursorrules in favor of AGENTS.md

[lennartkats-db]

Remove the .cursorrules symlink as Cursor now supports AGENTS.md directly for defining agent behavior.

[github-actions]

An authorized user can trigger integration tests manually by following the instructions below:

Trigger:
go/deco-tests-run/cli

Inputs:

• PR number: 3559
• Commit SHA: 028dc42bcb8e6b04e64d36d68e07d3b62e7f856b

Checks will be approved automatically on success.

[eng-dev-ecosystem-bot]

Run: 17671943954

	Env	✅​pass	🔄​flaky	🙈​skip
✅​	aws linux	312		526
✅​	aws windows	313		525
🔄​	aws-ucws linux	415	9	424
🔄​	aws-ucws windows	416	9	423
✅​	azure linux	312		525
✅​	azure windows	313		524
🔄​	azure-ucws linux	418	6	423
🔄​	azure-ucws windows	417	8	422
✅​	gcp linux	311		527
✅​	gcp windows	312		526

9 failing tests:

Test Name	aws-ucws linux	aws-ucws windows	azure-ucws linux	azure-ucws windows
TestAccept/bundle/deploy/dashboard/detect-change	🔄​flaky	🔄​flaky	🔄​flaky	🔄​flaky
TestAccept/bundle/deploy/dashboard/generate_inplace	🔄​flaky	🔄​flaky	✅​pass	🔄​flaky
TestAccept/bundle/deploy/dashboard/nested-folders	🔄​flaky	🔄​flaky	✅​pass	🔄​flaky
TestAccept/bundle/deploy/dashboard/simple	🔄​flaky	🔄​flaky	✅​pass	🔄​flaky
TestAccept/bundle/deploy/dashboard/simple_outside_bundle_root	🔄​flaky	🔄​flaky	🔄​flaky	🔄​flaky
TestAccept/bundle/deploy/dashboard/simple_syncroot	🔄​flaky	🔄​flaky	🔄​flaky	🔄​flaky
TestAccept/bundle/deployment/bind/dashboard	🔄​flaky	🔄​flaky	🔄​flaky	🔄​flaky
TestAccept/bundle/deployment/bind/dashboard/recreation	🔄​flaky	🔄​flaky	🔄​flaky	✅​pass
TestDashboardAssumptions_WorkspaceImport	🔄​flaky	🔄​flaky	🔄​flaky	🔄​flaky