Add --verbose flag for real-time file discovery feedback

Implement verbose mode that shows files as they are discovered during
collection rather than just a summary. This provides better user feedback
during the typically slow filesystem traversal phase.

Features:
- Real-time "found: filename" output as files are discovered
- Verbose feedback during collection phase (not archiving phase)
- Simple, focused output that shows filtering effects
- Helps users track progress during potentially slow operations

Changes:
- Add --verbose boolean flag to CLI
- Pass verbose flag to collector constructors
- Display "found: filename" output during file collection
- Add test case to verify verbose output contains expected messages
- Update test suite with helper function to verify output contents

collector/collector.go

@@ -18,21 +18,24 @@ type FileEntry struct {
 type Collector struct {
 	matcher   Matcher
 	dirFilter DirectoryFilter
+	verbose   bool
 }
 
 // New creates a new collector with the specified matcher
-func New(matcher Matcher) *Collector {
+func New(matcher Matcher, verbose bool) *Collector {
 	return &Collector{
 		matcher:   matcher,
 		dirFilter: nil,
+		verbose:   verbose,
 	}
 }
 
 // NewWithDirectoryFilter creates a new collector with the specified matcher and directory filter
-func NewWithDirectoryFilter(matcher Matcher, dirFilter DirectoryFilter) *Collector {
+func NewWithDirectoryFilter(matcher Matcher, dirFilter DirectoryFilter, verbose bool) *Collector {
 	return &Collector{
 		matcher:   matcher,
 		dirFilter: dirFilter,
+		verbose:   verbose,
 	}
 }
 
@@ -98,6 +101,11 @@ func (c *Collector) Collect(sourceDir string) ([]FileEntry, error) {
 			// Clean the relative path to ensure consistent formatting
 			relPath = filepath.ToSlash(relPath)
 
+			// Show verbose output when file is found
+			if c.verbose {
+				fmt.Printf("found: %s\n", relPath)
+			}
+
 			files = append(files, FileEntry{
 				Path:     relPath,
 				FullPath: path,

main.go

@@ -36,11 +36,13 @@ func main() {
 	var matchFlags stringSlice
 	var includeDirFlags stringSlice
 	var excludeDirFlags stringSlice
+	var verbose bool
 
 	flag.Var(&nameFlags, "name", "Match exact filename (can be specified multiple times)")
 	flag.Var(&matchFlags, "match", "Match directory pattern (can be specified multiple times)")
 	flag.Var(&includeDirFlags, "include-dir", "Only traverse directories matching pattern (can be specified multiple times)")
 	flag.Var(&excludeDirFlags, "exclude-dir", "Skip directories matching pattern (can be specified multiple times)")
+	flag.BoolVar(&verbose, "verbose", false, "Enable verbose output for debugging")
 
 	// Custom usage message
 	flag.Usage = func() {
@@ -125,10 +127,11 @@ func main() {
 	// Create collector and collect files
 	var c *collector.Collector
 	if dirFilter != nil {
-		c = collector.NewWithDirectoryFilter(matcher, dirFilter)
+		c = collector.NewWithDirectoryFilter(matcher, dirFilter, verbose)
 	} else {
-		c = collector.New(matcher)
+		c = collector.New(matcher, verbose)
 	}
+
 	files, err := c.Collect(sourceDir)
 	if err != nil {
 		fmt.Fprintf(os.Stderr, "Error: %v\n", err)

test.sh

@@ -79,6 +79,24 @@ verify_archive_contents() {
     fi
 }
 
+# Function to verify command output contains expected text
+verify_output_contains() {
+    local expected_text="$1"
+
+    echo -n "  Verifying output contains '$expected_text'... "
+
+    if grep -q "$expected_text" /tmp/test_output.txt; then
+        echo -e "${GREEN}OK${NC}"
+        return 0
+    else
+        echo -e "${RED}FAILED${NC}"
+        echo "    Expected to find: $expected_text"
+        echo "    In output:"
+        cat /tmp/test_output.txt | sed 's/^/      /'
+        return 1
+    fi
+}
+
 echo -e "${YELLOW}=== Collect CLI Test Suite ===${NC}\n"
 
 # Clean up any previous test artifacts
@@ -223,6 +241,14 @@ run_test "combined include and exclude filters" \
     "./collect --include-dir 'project-*' --exclude-dir 'project-two' --name 'app.go' --name 'lib.go' test/ test-include-exclude.tgz"
 verify_archive_contents "test-include-exclude.tgz" "project-one/src/app.go"
 
+# Test 22: Verbose output shows files being found
+run_test "verbose output shows files being found" \
+    "./collect --verbose --name 'README.md' --name 'main.go' test/ test-verbose.tgz"
+verify_archive_contents "test-verbose.tgz" "README.md docs/README.md src/main.go"
+verify_output_contains "found: README.md"
+verify_output_contains "found: docs/README.md"
+verify_output_contains "found: src/main.go"
+
 # Summary
 echo -e "\n${YELLOW}=== Test Summary ===${NC}"
 echo -e "Tests passed: ${GREEN}$TESTS_PASSED${NC}"