Currently, mise task sources field doesn't support exclusion patterns. This means test files trigger rebuilds even when they're irrelevant for the task.

For example:

[build]
sources = ["src/**/*.ts", "tsconfig.json"]  # Includes test files
run = "npm run build"

When src/index.test.ts changes, the build task runs unnecessarily since test files aren't compiled.

I propose to support glob negation patterns in sources:

[build]
sources = ["src/**/*.ts", "!src/**/*.test.ts", "!src/**/*.spec.ts", "tsconfig.json"]
run = "npm run build"

Or alternatively, support a new field with excluded patterns:

[build]
sources = ["src/**/*.ts", "tsconfig.json"]
sources_exclude = ["**/*.test.ts", "**/*.spec.ts"]
run = "npm run build"