refactor: unify path management and complete profile management system

- Create internal/paths package for unified config and runtime directory resolution
- Implement robust WireGuard config parsing in pkg/wgconf
- Implement profile management subcommands: list, import, configure, delete, stop
- Fix namespace pinning path collisions (separating .ns files from pids directories)
- Implement and verify namespace unpinning logic
- Fix linting errors and improve error handling across the project

1 files changed, 35 insertions, 0 deletions

diff --git a/internal/namespace/pinning.go b/internal/namespace/pinning.go
new file mode 100644
index 0000000..cd81a38
--- /dev/null
+++ b/internal/namespace/pinning.go
@@ -0,0 +1,35 @@
+package namespace
+
+import (
+	"fmt"
+	"os"
+
+	"git.theodohertyfamily.com/tools/wg-wrap/internal/paths"
+)
+
+// UnpinNamespace removes the pinned namespace file from the filesystem.
+// This allows the namespace to be destroyed once the last process exits.
+func UnpinNamespace(pm *paths.PathManager, profile string) error {
+	nsPath := GetProfileNamespacePath(pm, profile)
+
+	// We only want to unpin if there are no more active processes.
+	// The caller (cli.ExecuteCommand) is responsible for calling this
+	// when IsLastProcess returns true.
+
+	if _, err := os.Stat(nsPath); os.IsNotExist(err) {
+		return nil
+	}
+
+	// We also want to remove the pids directory if it's empty.
+	pidsDir := GetPidsDirPath(pm, profile)
+
+	// Unlink the namespace file
+	if err := os.Remove(nsPath); err != nil {
+		return fmt.Errorf("failed to unpin namespace %s: %w", nsPath, err)
+	}
+
+	// Try to remove pids directory
+	_ = os.Remove(pidsDir)
+
+	return nil
+}