- initialize position state with a `bottom` field set to null
- use `bottom` css property instead of `top` when menu flips above the anchor to prevent floating when content shrinks on query filtering
- remove `items.length` from layout effect dependencies since repositioning on item count change caused the flipping issue
- build `positionStyle` object conditionally based on whether `bottom` is set
- add `handleFocus` in Block to reopen slash menu on focus if content starts with `/`
- add `outerRef` on editor root div to detect outside clicks
- add `useEffect` with document `mousedown` listener to close slash menu when clicking outside the editor or on a different block
- add `data-slash-menu` attribute on SlashMenu to exclude it from the close trigger
- migrate block content from plain strings to InlineNode[] structure
- add inline toolbar (bold, italic, code, color, link) on text selection
- add checklist block type with toggle support
- add image block type (URL-based, phase 2)
- add inline serialization helpers (inlineToDom, domToInline)
- add inline types and length utilities
- extend caret utils with range get/set support
- update block registry and all existing block types for new content model
- update demo blocks in ComponentsPage to use rich inline content
- update README to reflect new architecture
- intercept Ctrl/Cmd+A to select only the current block's content, preventing cross-block merge bug
- increase slash menu width from 280 to 375 and max-height from 320 to 360
- enlarge icon container, increase gap and padding, and upsize text in slash menu items
- increase menu width and max height constants
- add SHORTCUT_HINT map displaying markdown shortcuts per block type
- update empty state and list container to use rounded-lg and shadow-md
- add section label header above block items
- show monospace shortcut hint on each menu item
- tighten item padding and icon size for denser layout
- move slash menu keyboard listener to document capture phase to prevent contentEditable default behaviors
- use circular navigation for arrow keys in slash menu
- separate undo/redo shortcuts into dedicated global keydown handler
- add adaptive positioning for slash menu with flip-up, horizontal clamp, and max-height constraints
hykocx