feat: Add glob_file_match option

[BhasherBEL]

what

• Add glob_file_match parameter to project to customize folders discovered by expandProjectGlobs (default to ["*.tf"] if not defined).

Example:

projects:
- dir: a/**/*
  glob_file_match:
  - "*.tf"
  - "terragrunt.hcl"

why

• Allow expandProjectGlobs to match with folders that doesn't contains .tf files
• Allow to match terragrunt-only folders

tests

• Tested with terragrunt-only (["terragrunt.hcl"])
• Tested with no value (i.e. default)
• Tested with both (["*.tf", "terragrunt.hcl"])

references

• Fix Terragrunt-only folders not found by autoplan #6340
• Extend feat: Add glob/wildcard pattern support for project dir field #6006

[Copilot]

Pull request overview

Adds a new per-project glob_file_match configuration option to control which files must exist in a matched directory for expandProjectGlobs to include it (defaulting to ["*.tf"]).

Changes:

• Introduces glob_file_match in raw project config and validates its patterns.
• Updates glob expansion filtering to look for any matching filename patterns (instead of only .tf).
• Adds unit/integration tests covering parsing, validation, and glob expansion behavior.

Reviewed changes

Copilot reviewed 4 out of 4 changed files in this pull request and generated 3 comments.

File	Description
server/core/config/raw/project.go	Adds GlobFileMatch field and validation for glob_file_match.
server/core/config/raw/project_test.go	Adds tests for YAML unmarshalling and validation error cases.
server/core/config/parser_validator.go	Updates glob expansion to filter directories by matching filenames (default *.tf).
server/core/config/parser_validator_test.go	Adds integration test ensuring glob expansion respects glob_file_match and the default behavior.