Complete Lack of Unit/Integration Tests for the `pkg/config` Package

[aniket866]

Describe the bug

• Location: pkg/config directory (contains config.go, localconfig.go, and file permission helper files)
• Reason: The configuration layer parses contexts, updates client configurations, and performs file permission checks (getFilePermission). Without tests, config validation and context switching logic can easily break during updates, which directly impacts all other client-dependent commands (like import and test).

Reproduction Flow

graph TD
    A["Developer modifies context validation/permission checks"] --> B["Runs tests with 'go test ./pkg/config'"]
    B --> C["CLI outputs: 'no test files'"]
    C --> D["Changes cause invalid configurations to pass validation unchecked"]

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