Verify that grid preset correctly handles uneven window counts:
- 2 windows → 1×2 grid
- 3 windows → 1×3 single row
- 4 windows → 2×2 perfect grid
- 5 windows → 2×3 grid (last row expands to fill)
- 7 windows → 2×4 grid (last row expands)
- 9 windows → 3×3 perfect grid
- 11 windows → 3×4 grid (last row expands)
Key behaviors verified:
- No empty space (last row windows expand to 100% width)
- All windows preserved in layout
- Window order maintained (depth-first traversal)
- Works with any N ≥ 2 windows
Also tests:
- Side-by-side with 2-4 windows (and error for 5+)
- Main + Sidebar with various window counts
- Error handling for too few/many windows
All 22 tests pass ✓
🤖 Generated with [Claude Code](https://claude.com/claude-code)
Co-Authored-By: Claude Sonnet 4.5 <noreply@anthropic.com>
Major redesign of preset system from static templates to adaptive algorithms:
**Grid preset** (fully adaptive):
- Now arranges ALL windows in best-fit grid (2x2, 2x3, 3x3, etc.)
- Minimum: 2 windows (down from 4)
- Algorithm calculates optimal rows/cols for any N windows
- Examples:
* 4 windows → 2×2 grid
* 6 windows → 2×3 grid
* 9 windows → 3×3 grid
**Side-by-side preset** (adaptive with limit):
- Arranges 2-4 windows in single horizontal row
- Maximum 4 windows (prevents unusably narrow splits)
- Equal splits: 50%, 33%, 25%
- Clear error message if >4 windows
**Main + Sidebar preset** (unchanged):
- Already worked correctly (intentionally hierarchical)
- One main window (70%) + sidebars stacked (30%)
- Adapts naturally to any N ≥ 2 windows
Architecture changes:
- Replace static MosaicNode templates with generate() functions
- Add minSlots/maxSlots instead of single slots field
- Implement buildHorizontalRow(), buildVerticalStack(), buildGridLayout()
- Remove fillLayoutTemplate() (no longer needed)
- Remove extra window stacking (all windows now equal)
Benefits:
- No arbitrary hierarchy (no "featured" vs "extra" windows)
- Matches tiling window manager patterns (Amethyst, yabai, etc.)
- More intuitive: "grid" grids ALL windows, not just first 4
- Better UX: Works with any number of windows in range
🤖 Generated with [Claude Code](https://claude.com/claude-code)
Co-Authored-By: Claude Sonnet 4.5 <noreply@anthropic.com>
Changes:
- Added TODO comment about IndexedDB unavailability in test runtime
- Moved layout preset selector to rightmost side of bottom bar
- Moved window settings button to rightmost side as well
- Removed per-workspace settings icon (now global button on right)
- Added spacer to separate workspace tabs from layout controls
- Changed preset descriptions to show "4+ windows" instead of "4 windows"
to clarify that presets work with more windows than the minimum
- Changed dropdown alignment from "start" to "end" for right-aligned opening
The bottom bar now has clearer visual separation:
[Workspace Tabs] [+] ................ [Layout Presets] [Settings]
Generated with [Claude Code](https://claude.com/claude-code)
Simplified layout system based on user feedback:
**1. Global Layout Config (Simpler)**
- Moved layoutConfig from per-workspace to global state
- One configuration applies to all workspaces (easier to understand)
- Updated state migration v8→v9 to move config to global level
- Updated WorkspaceSettings UI to edit global config
- Renamed updateWorkspaceLayoutConfig → updateLayoutConfig
**2. Preserve Extra Windows (Fixed Bug)**
- Fixed applyPresetToLayout to keep windows beyond preset slots
- When applying 4-window grid to 6 windows, windows 5-6 are preserved
- Extra windows stacked vertically on right side (70/30 split)
- No more window loss when applying presets
**3. Layout Dropdown in TabBar (Better UX)**
- Added dropdown menu next to workspace tabs
- Shows all available presets with icons (Grid2X2, Columns2, Split)
- Displays window requirements and availability
- Disables presets that need more windows than available
- One-click preset application with toast feedback
- More accessible than /layout command
All tests passing (457 passed). State migration handles v6→v7→v8→v9 correctly.
Generated with [Claude Code](https://claude.com/claude-code)
Phase 3 implementation:
- Created layout-presets.ts with 3 built-in presets (side-by-side, main-sidebar, grid)
- Implemented fillLayoutTemplate() for recursive template filling with window IDs
- Added collectWindowIds() for depth-first traversal of layout trees
- Created applyPresetToLayout() to reorganize existing windows
- Created layout-parser.ts for /layout command argument parsing
- Added layout command to man.ts with documentation and examples
- Built LayoutViewer component with:
* Visual preset gallery with diagrams
* Window count validation
* Apply preset functionality
* Error handling for insufficient windows
* Command-line preset specification support
- Wired LayoutViewer into WindowRenderer with lazy loading
- Added "layout" to AppId type definition
- Exposed applyPresetLayout in useGrimoire hook
Presets allow users to quickly reorganize multiple windows into
common layouts: 50/50 splits, 70/30 main+sidebar, or 2×2 grids.
Generated with [Claude Code](https://claude.com/claude-code)
Add per-workspace layout configuration with smart auto-balancing:
**Core Changes:**
- Add LayoutConfig interface to Workspace type with insertionMode, splitPercentage, insertionPosition
- Create layout-utils.ts with smart direction algorithm that auto-balances horizontal/vertical splits
- Update addWindow() to use workspace layoutConfig instead of hardcoded values
- Migrate state from v7→v8, adding layoutConfig to all workspaces with smart defaults
**Smart Direction Algorithm:**
- Analyzes layout tree to count horizontal vs vertical splits
- Automatically balances by favoring the less-common direction
- Defaults to horizontal (row) for first split
- Provides foundation for "Balanced (auto)" insertion mode
**Testing:**
- Add 30 comprehensive tests for layout-utils.ts (tree analysis, smart direction, window insertion)
- Add 30 tests for logic.ts addWindow() with different layout configs (row/column/smart modes)
- Update migration tests to verify v6→v7→v8 and v7→v8 paths
**Migration:**
- v7→v8 adds layoutConfig with defaults: smart mode, 50% split, second position
- All existing workspaces automatically get smart auto-balancing behavior
Implements orthogonal design: layout behavior = workspace settings (not command flags)
