Initial implementation of inventree

A small IT asset inventory system built around a nested folder tree,
matching the project brief: Go + html/template + Bootstrap 5 + vanilla JS,
SQLite storage (WAL, FKs, migrations), embedded templates/static assets,
single compiled binary.

- AJAX-driven inventory tree: lazy-loaded folder expansion with per-user
  persisted expand state, drag-and-drop move for folders/assets, safe
  delete-with-relocate-or-cascade confirmation, search with breadcrumbs.
- Assets: CRUD, duplicate, move, auto-generated IT-000001-style IDs,
  CSV import (with optional folder auto-create) and export.
- Admin-defined item types with custom fields (text/long_text/number/date/
  boolean/dropdown/url/ip_address).
- Configurable statuses, session-based auth (bcrypt, secure cookies),
  admin/user roles, user management.
- CLI: serve, version, database migrate, database backup; /healthz;
  graceful shutdown; Dockerfile/docker-compose/systemd unit; Go test suite.

internal/assets/search.go

@@ -0,0 +1,64 @@
+package assets
+
+import (
+	"context"
+
+	"inventree/internal/models"
+)
+
+// Search performs a global, case-insensitive substring search across asset
+// ID, name, notes, folder name, item type name, assigned username, and
+// custom field values, returning fully-loaded assets (with folder path and
+// custom fields) ready for display with breadcrumbs.
+func (s *Store) Search(ctx context.Context, query string, limit int) ([]models.Asset, error) {
+	if query == "" {
+		return nil, nil
+	}
+	if limit <= 0 || limit > 200 {
+		limit = 50
+	}
+	like := "%" + query + "%"
+
+	rows, err := s.db.QueryContext(ctx, `
+		SELECT DISTINCT a.id
+		FROM assets a
+		LEFT JOIN folders fo ON fo.id = a.folder_id
+		LEFT JOIN users au ON au.id = a.assigned_user_id
+		JOIN item_types it ON it.id = a.item_type_id
+		WHERE a.asset_id LIKE ? COLLATE NOCASE
+		   OR a.name LIKE ? COLLATE NOCASE
+		   OR a.notes LIKE ? COLLATE NOCASE
+		   OR fo.name LIKE ? COLLATE NOCASE
+		   OR it.name LIKE ? COLLATE NOCASE
+		   OR au.username LIKE ? COLLATE NOCASE
+		   OR EXISTS (SELECT 1 FROM custom_field_values v WHERE v.asset_id = a.id AND v.value LIKE ? COLLATE NOCASE)
+		ORDER BY a.name COLLATE NOCASE ASC
+		LIMIT ?`,
+		like, like, like, like, like, like, like, limit)
+	if err != nil {
+		return nil, err
+	}
+	var ids []int64
+	for rows.Next() {
+		var id int64
+		if err := rows.Scan(&id); err != nil {
+			rows.Close()
+			return nil, err
+		}
+		ids = append(ids, id)
+	}
+	rows.Close()
+	if err := rows.Err(); err != nil {
+		return nil, err
+	}
+
+	var out []models.Asset
+	for _, id := range ids {
+		a, err := s.Get(ctx, id)
+		if err != nil {
+			return nil, err
+		}
+		out = append(out, *a)
+	}
+	return out, nil
+}