Added #

• CollectionController - Central controller that owns data and coordinates managers

  • CRUD operations: add, addAll, remove, update, clear
  • Convenience methods: upsert, upsertAll, removeAll, removeWhere, getAll
  • Optional data loader for external sources with pagination
  • State serialization for deep linking and persistence

• FilterManager - Multi-filter support with expressions

  • Filter modes: any, all
  • Expressions: AND, OR, NOT composition
  • TransformSource: local, remote, combined processing
  • SearchFilter for text search
  • FuzzySearchFilter for Levenshtein-based fuzzy matching

• SortManager - Multi-level sorting

  • Sort options: value-based, comparable-based, custom comparator
  • Sort order: ascending, descending, none (tri-state)
  • Schwartzian transform optimization for large lists
  • Multi-key caching for efficient multi-level sorting

• GroupManager - Hierarchical grouping

  • Single and multi-value grouping
  • Nested groups with configurable depth
  • Group-level sorting
  • Integration with AggregationManager

• SelectionManager - Multi-scope selection

  • Scoped selection sets
  • Tri-state support (selected, not selected, toggle)
  • Batch operations

• PaginationState - Pagination tracking

  • Cursor and offset token types
  • Multi-edge support (leading/trailing)
  • Loading state tracking with retry support

• AggregationManager - Group-level computations

  • Built-in: count, sum, avg, min, max, first, last
  • Custom aggregation support
  • Integration with SlotManager for header display

• LinkManager - DAG relationship support

  • Bidirectional and directional links
  • Path finding
  • Reachability queries

• Node - Tree structure for display

  • Expand/collapse support
  • Hybrid recursion (iterative for deep trees)
  • Collapse state serialization
  • Item operations: upsert, upsertAll, updateAll
  • Child operations: insertChildAt, reorderChild, swapChildren
  • Navigation: next(item), prev(item) for item traversal

• SlotManager - Virtualized list support

  • Efficient index calculations
  • Pre-built or on-demand slot creation
  • Group header and item slots
  • Navigation: adjacentItem, nextItemAfter, prevItemBefore for master-detail
  • GroupHeaderSlot.groupOptionId to distinguish tree nodes from synthetic groups
  • isTreeNode / isGroupHeader convenience getters

Performance #

• Multi-level sorting optimized with full Schwartzian transform
• Hybrid recursion prevents stack overflow on deep trees (10,000+ nodes)
• Filtered item caching minimizes redundant processing