feat: add heartbeat ping to keep HF Space awake

Fix infinite loading screen on new/empty projects by letting isVisualizing trigger when nodes are empty

Fix text selection: stop pointerdown and touchstart events from bubbling to prevent canvas panning when selecting text in edit mode

Update TextNode to use high-performance custom resize handles and support double-click edit mode that blocks node dragging for text selection

Optimize ImageNode resizing: use direct DOM updates and set node size to 100% when selected/resizing to make it responsive on all 8 handles without lag

Completely rewrite ImageNode scaling with pure pointer-event mathematical calculations and direct React Flow store updates

Fix Shift selection marquee and ImageNode resize translation issues

fix: re-route ReactFlow selection selectionKeyCode to Control/Meta to free up Shift for image aspect-ratio locking

fix: resolve handle drag interruption and enable side handle aspect ratio locking with Shift key

fix: make image resizing smooth, allow side distortion, aspect ratio locking on corners, and stylize handles

fix: dynamically calculate and lock image aspect ratio on load and enable keepAspectRatio on NodeResizer

feat: hold loading screen overlay until fitView centering has finished in the background

feat: add beautiful neo-brutalist stylized loading screen for canvas

fix: resolve Temporal Dead Zone error by placing useEffect after useCanvasLogic

feat: automatically center viewport and set normal scale (100%) on board load

feat: expand canvas zoom limits to support extreme scaling

fix: resolve node data fallback to 'bottom' causing images to fail to load

feat: optimize canvas loading and saving with lazy-loaded drawing paths/images

feat: rebrand QuestboardAI -> TaskFlow everywhere (UI, locales, index.html)

fix: block canvas creation UI when Free tier limit reached, show upgrade card

fix: canvas limit alert+redirect, prices match landing (/), default manual sketch mode

feat: remove export JSON button, restrict save-as-template to Ultra owners only

fix: subscription page - replace outdated content with real comparison table, fix gap layout

fix: sidebar gap layout bug, add active daily AI count display

fix: import BookOpen and revert API URL to production

Implement paywall modal, subscription pages, and translation keys

Implement project creation from templates UI

fix: connect subgoal edges to main-target instead of side target handles

fix: map subgoal source and target handles on new AI edges

feat: implement chat memory, remove backdrop blur, autoscroll on open, and multiple chat threads per project

fix(canvas): map subgoal targets to horizontal yellow pins instead of vertical top pins

fix(auth): automatically logout if profile fetch returns 404

gemini integration

fix: Resolve layout fallback bug in useCanvasLogic when parsing rich node decision JSON

feat: Add JSON export functionality to Canvas page

fix(claim): restore spaces back to plus signs in claimToken query param extraction

feat(claim): remove scroll/sword game UI and make claim direct, instant, and automatic on visit

Feat: Add gamified ClaimPage and register public /claim route

feat: rebrand PlotTwist to QuestboardAI

feat: rebrand TaskFlow to PlotTwist and align with Human-in-the-Loop AI Agent Proof-of-Work vision

fix: make settings modals adaptive and scrollable to prevent viewport overflow

fix(canvas): align tooltips perfectly using pure CSS group hover transitions

fix(canvas): restore tooltip visibility by removing overflow restriction

style(canvas): center toolbar vertically, optimize layout, prevent overflow

fix: make vertical sequence spacing 100% uniform and add horizontal dashed dividers to separate different subgoal branches

fix: replace crooked arrow with pixel-perfect SVG and unify collapse/expand state inside standard chevron card buttons

fix: resolve duplicate branches bug, style cards neutral black, and add center vertical sequence connections with arrows

feat: align subgoal branches on same level, remove forced card background coloring, add horizontal tree connectors

feat: render subgoal edges as amber dashed lines and continuation edges as green dashed lines on canvas

feat: redesign visual branches connections in TaskListView to match custom tree layout