feat: scaffold remove command foundations

scripts/smoke-test-remove.sh

@@ -0,0 +1,57 @@
+#!/usr/bin/env bash
+set -euo pipefail
+
+ROOT_DIR="$(cd "$(dirname "${BASH_SOURCE[0]}")/.." && pwd)"
+BIN="go run"
+TMP_DIR="$(mktemp -d)"
+trap 'rm -rf "$TMP_DIR"' EXIT
+
+mkdir -p "$TMP_DIR/nested"
+touch "$TMP_DIR/report copy draft.txt"
+touch "$TMP_DIR/nested/notes draft.txt"
+
+echo "Previewing removals..."
+$BIN "$ROOT_DIR/main.go" remove " copy" " draft" --path "$TMP_DIR" --recursive --dry-run >/dev/null
+
+if [[ ! -f "$TMP_DIR/report copy draft.txt" ]]; then
+  echo "preview should not modify files" >&2
+  exit 1
+fi
+
+echo "Applying removals..."
+$BIN "$ROOT_DIR/main.go" remove " copy" " draft" --path "$TMP_DIR" --recursive --yes >/dev/null
+
+if [[ ! -f "$TMP_DIR/report.txt" ]]; then
+  echo "expected report.txt to exist after removal" >&2
+  exit 1
+fi
+
+if [[ ! -f "$TMP_DIR/nested/notes.txt" ]]; then
+  echo "expected nested/notes.txt to exist after removal" >&2
+  exit 1
+fi
+
+if [[ -f "$TMP_DIR/report copy draft.txt" ]]; then
+  echo "source file still exists after apply" >&2
+  exit 1
+fi
+
+echo "Undoing removals..."
+$BIN "$ROOT_DIR/main.go" undo --path "$TMP_DIR" >/dev/null
+
+if [[ ! -f "$TMP_DIR/report copy draft.txt" ]]; then
+  echo "undo failed to restore report copy draft.txt" >&2
+  exit 1
+fi
+
+if [[ ! -f "$TMP_DIR/nested/notes draft.txt" ]]; then
+  echo "undo failed to restore nested/notes draft.txt" >&2
+  exit 1
+fi
+
+if [[ -f "$TMP_DIR/report.txt" ]]; then
+  echo "undo failed to clean up report.txt" >&2
+  exit 1
+fi
+
+echo "Remove smoke test succeeded."