Resizable splitters: draggable gutters between grid tracks adjust per-layout
column/row fractions (fr units), applied as an inline grid-template and persisted
(web-terminal:grid-splits). The fraction math (adjustSplit — trades delta between
adjacent tracks, clamps to a minimum, conserves the total) is a pure, unit-tested
helper in grid-layout.ts; the drag translates pixel motion into an fr delta.
Saved presets: public/grid-presets.ts — a toolbar dropdown to save the current
layout + its split under a name, re-apply it in one click, or delete it
(web-terminal:grid-presets). Desktop-only, like the layout toggle.
- grid-layout.ts: layoutTracks, defaultSplit, adjustSplit, tracksToTemplate,
load/saveGridSplits, splitForLayout (validates stored shape).
- tabs.ts: renderGutters/beginGutterDrag/setSplit; applyLayout sets the inline
template; gridArrangement()/applyGridPreset() hooks.
- main.ts: mount the presets dropdown. style.css: gutters + presets menu.
- tests: splitter math + persistence + a stubbed drag repro (1.2fr/0.8fr); presets
persistence + dropdown (save/apply/delete/close). typecheck+build clean, 1612 pass.
Co-Authored-By: Claude Opus 4.8 (1M context) <noreply@anthropic.com>
Builds on the v1 watch board:
- Two more layouts: row-3 (1×3) and grid-6 (2×3). A single `grid` marker class on
#term now carries the shared cell chrome so it no longer enumerates each lay-*.
- Ctrl+` cycles the focused quadrant (Ctrl+Shift+` reverses); matchFocusCycleKey
is an exported pure helper so it's unit-tested. No-op / passthrough in single mode.
- Per-quadrant ⛶ maximize: the focused cell expands to fill the grid as an absolute
overlay while siblings stay live behind it; follows focus, resets on layout
change / tab close.
- Drag a tab from the tab bar onto a quadrant to assign it there (reuses the
existing tab-drag dragIndex); grid-only.
Adversarial review (3 lenses → per-finding verify, incl. a headless-Chrome repro)
caught a HIGH: maximizing via `grid-column/row: 1/-1` shoved siblings into implicit
rows — a strip instead of fullscreen AND a spurious resize to backgrounded live
PTYs. Fixed with an absolute-overlay (`position:absolute; inset:0`), then verified
in real Chromium (Playwright): maximized cell fills #term, siblings 0px size delta.
Also: silence a covered pane's pending pulse under maximize; coarse-pointer target
for .cell-max. Verified: typecheck + build:web clean, 1579 tests pass.
Co-Authored-By: Claude Opus 4.8 (1M context) <noreply@anthropic.com>
When several sessions are open on a large screen (≥1024px), the terminal
area can split into 1×2 or 2×2 so multiple LIVE, interactive terminals show
at once — a monitoring convenience for vibe-coding several Claude sessions.
Design keeps activeIndex as the single focused pane, so keybar/voice/approval
routing is unchanged; a new gridLayout + derived visible-set lets several
.term-cell wrappers show together inside a CSS-grid #term. The server and WS
protocol are untouched.
- public/grid-layout.ts (new): layout types/capacity, visibleIndices,
matchMedia desktop gate (GRID_MIN_WIDTH=1024), persistence, toolbar toggle.
- tabs.ts: pane→.term-cell wrapper (header + terminal + inline-approve footer);
applyLayout() owns show/hide + grid class + cell order + placeholders;
board-aware activate() (never focuses a hidden pane); setFocused/setGridLayout
delegate to it; renderCell/renderInlineApprove; refitVisible; notification
suppression for on-screen panes (factoring in the home overlay).
- terminal-session.ts: show({focus}) so non-focused quadrants don't steal
keyboard focus; onFocus callback (capture-phase pointerdown).
- main.ts: mount the toggle; window-focus refit → refitVisible.
- style.css: cell/grid model (.term-pane → relative flex child), focus ring,
pending pulse, inline approve, placeholder, toggle + coarse-pointer targets.
- tests: grid-layout.test.ts + split-grid block in tabs.test.ts (+33).
Adversarial review (4 lenses → per-finding verify) caught and fixed a HIGH:
activate() was not board-aware, so opening a tab on a full grid focused a
hidden pane (typing into an invisible session). Verified: typecheck + build:web
clean, 1566 tests pass, grid-layout 95% / tabs 94% coverage.
Co-Authored-By: Claude Opus 4.8 (1M context) <noreply@anthropic.com>
