refactor(testgen): generalize Go test generation prompt

- Remove Grokkit-specific references to make the prompt more versatile.
- Update unit and live test patterns for broader applicability, including standard testing.T usage.
- Adjust test name derivation and skip messages for consistency.
- Sync test assertions in testgen_test.go with the updated prompt.

cmd/testgen.go

@@ -192,36 +192,35 @@ func removeSourceComments(content, lang string) string {
 func getTestPrompt(lang string) string {
 	switch lang {
 	case "Go":
-		return `You are an expert Go test writer for the Grokkit project.
+		return `You are an expert Go test writer.
 
-Generate a COMPLETE, production-ready *_test.go file that follows this EXACT pattern from cmd/scaffold_test.go:
+Generate a COMPLETE, production-ready *_test.go file that follows this modern Unit + Live test pattern:
 
-1. Fast unit test (always runs on "make test"):
+1. Fast unit test (always runs on "go test"):
-   func TestXXX_Unit(t *testing.T) {  // or just TestXXX if it fits better
+   func TestXXX_Unit(t *testing.T) {  // or TestCreateIniFile if it fits better
        t.Parallel()
-       t.Log("✓ Fast XXX unit test (no Grok API call)")
+       t.Log("✓ Fast XXX unit test")
 
-       // Zero API calls / network
+       // Zero external calls
        // Use t.TempDir() + os.Chdir with proper defer restore + error logging
-       // testify/assert + require
+       // Use standard testing.T (add testify/assert only if the project already uses it)
-       // Table-driven where sensible
+       // Cover happy path, errors, edge cases
-       // Cover main functions in the source file
+       // Table-driven where it makes sense
    }
 
 2. Optional live integration test (skipped by default):
    func TestXXX_Live(t *testing.T) {
        if !testing.Short() {
-           t.Skip("skipping live Grok integration test. Run with:\n      go test ./cmd -run TestXXX_Live -short -v")
+           t.Skip("skipping live integration test. Run with:\n      go test -run TestXXX_Live -short -v")
        }
-       t.Log("🧪 Running live Grok integration test...")
+       t.Log("🧪 Running live integration test...")
-       // Real Grok API calls via grok.NewClient()
+       // Real behavior (file I/O, exec, API calls, etc.)
-       // t.Logf messages so it never looks hung
+       // Use t.Logf messages so it never looks hung
    }
 
 Exact rules:
-- Derive test name from source filename (e.g. client.go → TestClient_Unit / TestClient_Live)
+- Derive sensible test names from the source filename and functions (e.g. filer.go → TestCreateIniFile_Unit / TestCreateIniFile_Live)
-- The XXX in the t.Skip command MUST match the live test function name you actually created
+- The XXX in the t.Skip command MUST exactly match the live test function name you created
-- Match Grokkit style exactly: imports, helpers, error handling, cwd restore
 - t.Parallel() on unit tests only
 - NO unused imports
 - Return ONLY the full test file. No explanations, no markdown, no backticks, no extra text whatsoever.`

cmd/testgen_test.go

@@ -108,7 +108,7 @@ func TestGetTestPrompt(t *testing.T) {
 		lang       string
 		wantPrefix string
 	}{
-		{"Go", "You are an expert Go test writer for the Grokkit project."},
+		{"Go", "You are an expert Go test writer."}, // ← updated to match the new generalized prompt
 		{"Python", "You are a pytest expert."},
 		{"C", "You are a C unit testing expert using Check framework."},
 		{"C++", "You are a Google Test expert."},