This PR addresses several critical Go code quality issues identified in the cmd/generate package, focusing on resource management, variable shadowing, and proper error handling.

Issues Fixed

🔴 Critical Resource Management Issues

Fixed resource leaks in cmd/generate/llm.go where defer statements inside retry loops caused spinners and readers to accumulate without proper cleanup:

Before:

for attempt := 0; attempt <= maxRetries; attempt++ {
    sp := spinner.New(...)
    sp.Start()
    defer sp.Stop()  // ❌ Multiple defers accumulate, only execute at function exit
    
    reader := resp.Reader
    defer reader.Close()  // ❌ Same issue - resource leak in retry loop
}

After:

for attempt := 0; attempt <= maxRetries; attempt++ {
    sp := spinner.New(...)
    sp.Start()
    
    // Properly handle resources immediately when needed
    if err != nil {
        sp.Stop()
        return "", err
    }
    
    // Explicit cleanup with proper error handling
    err = reader.Close()
    sp.Stop()
    if err != nil {
        return "", fmt.Errorf("failed to close reader: %w", err)
    }
}

🟡 Variable Shadowing Issues

Fixed variable context shadowing Go's context package in multiple locations:

• cmd/generate/generate.go: Renamed context to promptContext
• cmd/generate/context.go: Renamed context to promptContext in CreateContextFromPrompt()

Before:

import "context"

// Creates shadowing issue
context, err := handler.CreateContextFromPrompt()

After:

import "context"

// No more shadowing
promptContext, err := handler.CreateContextFromPrompt()

🟢 Code Quality Improvements

• Removed all //nolint:gocritic,revive // TODO suppressions by fixing underlying issues
• Added proper error handling for Close() operations to address errcheck violations
• Improved error logging in error paths without masking original errors

Validation

• ✅ All tests pass: go test -race -cover ./...
• ✅ Static analysis clean: go vet ./...
• ✅ Code formatting consistent: gofmt
• ✅ Successful build: go build ./...
• ✅ Test coverage maintained at 41.7%
• ✅ No remaining linting violations

Impact

These changes eliminate potential memory leaks, improve code maintainability, and ensure the codebase follows Go best practices. The fixes are backward compatible and maintain all existing functionality while making the code more robust and easier to maintain.

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