Please address the comments from this code review:

## Individual Comments

### Comment 1
<location> `internal/testing/testdata.go:21` </location>
<code_context>
 }

-var commonElfs = map[string]elf.Elf{
+var GoodElfs = map[string]binaryDetails{
 	"hello_pie": {
-		Name:         "hello_pie",
</code_context>

<issue_to_address>
**issue (complexity):** Consider introducing a helper function to automatically set binaryDetails flags based on the Elf struct, reducing manual repetition.

You can pull the repeated flag‐logic into a single helper and then just pass your Elf literal plus a description. For example:

```go
func newBinaryDetails(desc string, e elf.Elf) binaryDetails {
    return binaryDetails{
        Description:    desc,
        Elf:            e,
        Dynamic:        e.Type == elf.Type(elf.PIE) || e.Type == elf.Type(elf.DYN),
        Exe:            e.Type == elf.Type(elf.PIE) || e.Type == elf.Type(elf.EXE),
        Lib:            e.Type == elf.Type(elf.DYN),
        HasInterpreter: e.Interpreter != "",
    }
}
```

Then your map becomes much shorter:

```go
var GoodElfs = map[string]binaryDetails{
    "hello_pie":    newBinaryDetails("PIE no dependencies",    elf.Elf{ Name: "hello_pie", Path: P_hello_pie, Class: elf.EI_CLASS(elf.ELF64), Type: elf.Type(elf.PIE), Interpreter: P_ld_linux, Dependencies: nil }),
    "hello_static": newBinaryDetails("Static linked executable", elf.Elf{ Name: "hello_static", Path: P_hello_static, Class: elf.EI_CLASS(elf.ELF64), Type: elf.Type(elf.EXE), Interpreter: "", Dependencies: nil }),
    // …and so on for the other entries…
}

var Ldd = newBinaryDetails("Not an ELF", elf.Elf{
    Name: "ldd", Path: P_ldd,
    Class: elf.EI_CLASS(elf.UNDEF), Type: elf.Type(elf.ELFNONE),
    Interpreter: "", Dependencies: nil,
})
```

This preserves exactly the same behavior while removing all of the manual flag repetitions.
</issue_to_address>

### Comment 2
<location> `internal/testing/testiterator.go:84` </location>
<code_context>
+//
+// Just don't try to use SkipNow, FailNow or t.Parallel as Go's rangefunc & t.Run hacks collide and mess up
+// goroutine clarity. There is probably a good fix with channels but I can't be bothered right now...
+func TestCases(t *testing.T, tests ...TestDetails) iter.Seq2[*testing.T, TestCase] {
+	var specficTestsRequested bool
+	if tests == nil {
</code_context>

<issue_to_address>
**issue (complexity):** Consider refactoring TestCases to return a slice of TestCase and use a simple for loop for subtests.

Here’s one way to collapse all that indirection into a simple slice + single `t.Run(…)` loop without losing any of the test-matrix:

1. Change `TestCases` to build and return `[]TestCase` instead of an `iter.Seq2`:

```go
// returns all permutations of TestCase (in-place, recursive, directory, etc)
func TestCases(t *testing.T, tests ...TestDetails) []TestCase {
    base := defaultTests
    if len(tests) > 0 {
        base = tests
    }

    var out []TestCase
    for _, inplace := range []bool{false, true} {
        for _, td := range base {
            name := td.Name
            if inplace {
                name += "_inplace"
            }
            tc := buildSingleCase(t, td, inplace)
            tc.Name = name
            out = append(out, tc)
        }

        // only for default set, also test directory runs
        if len(tests) == 0 {
            for _, recursive := range []bool{false, true} {
                name := "Directory"
                if inplace {
                    name += "_inplace"
                }
                if recursive {
                    name += "_recursive"
                }
                tc := buildDirCase(t, defaultTests, inplace, recursive)
                tc.Name = name
                out = append(out, tc)
            }
        }
    }
    return out
}
```

2. Implement the two helpers to keep things DRY:

```go
func buildSingleCase(t *testing.T, td TestDetails, inplace bool) TestCase {
    tc := TestCase{ /* initialize fields */ }
    generateOutput(td, &tc, inplace)
    return tc
}

func buildDirCase(t *testing.T, bins []TestDetails, inplace, recursive bool) TestCase {
    tc := TestCase{ /* dst/src/options based on flags */ }
    for _, td := range bins {
        generateOutput(td, &tc, inplace)
    }
    return tc
}
```

3. In your test, consume that slice directly:

```go
func TestSomething(t *testing.T) {
    for _, tc := range TestCases(t) {
        t.Run(tc.Name, func(t *testing.T) {
            Assert := assert.New(t)
            testbody(t, tc) // whatever your body does
        })
    }
}
```

Benefits:

- No custom iterator type or higher-order function needed.
- One flat `for _, tc := range …` loop makes it immediately clear how many subtests you'll get.
- You can still reuse `generateOutput` and keep the same flags/options logic.
</issue_to_address>