pardes.git/src/Layer.zig, branch main

tag_layer.zig folds into Layer.zig, whose TagHit its two functions work on

2026-10-01T03:12:17Z

Two functions (sameCell, columnAt) on Layer.TagHit, 32 lines with their imports, used by edit.zig, mouse.zig and look.zig: they sit with the type now, called Layer.sameCell and Layer.columnAt. docs/design.typ names Layer.zig in its place. No behaviour changes. Co-Authored-By: Claude Opus 5.5

No panic from a notice wider than its band, or from the rest of its class

2026-10-01T03:12:15Z

The showcase GUI died in joinNotice on a long shader-error notice: with the tagline narrower than the body, the band hides more columns (skip) than a long message has padding (pad), and `skip..@min(pad, ..)` ran backwards. An audit of draw.zig, Layer.zig, Presentation.zig and animation.zig found the same class elsewhere, all fixed: - a multi-row pane tag or header scrolled for its caret's line sliced a shorter row past its end (paintPaneTag, renderHeaderLayer); - a zero-width column tag kept an earlier frame's viewport, and a column move's clip took it below zero (now saturating, and the early return resets the viewport and caret); - a tag line past 65535 columns overflowed tag_scroll's u16; - a hover left over from a bigger window dashed past the grid; - a border drag over a column that went away, a move preview past a shrunken grid, a column-move rail at zero columns; - Layer.pointAt cast a host's unchecked float metrics (web) to u16; - Text.insertVerticalCursor read past its lines for a cursor whose text changed under it. Regressions: a test of a notice wider than its band through Msg and through setMessage (the Post.zig compile-error path), which panics without the fix; and a monkey over the core at a gui's metrics (random resizes to a cell, long notices, prompts, multi-row tags, clicks, keys), 400 steps in the suite, PARDES_FUZZ_SEED/STEPS for longer runs; 60 seeds x 3000 steps clean. Shared files touched: none of the list (draw.zig, Layer.zig, Text.zig).

One Layer for tags, notices, headers and bodies; a taller tag is one layer of rows; wire v8

2026-10-01T03:12:15Z

src/Layer.zig merges TagLayer and BodyLayer. `rows` (0 = no layer) and a cursor at {x, y}. A tag of N rows is ONE layer of N grid rows: tagHit answers the row as `line`, bodyHit keeps its meaning, and the per-line layer bases (TAG_LINE_LAYER_BASE, HEADER_LINE_LAYER_BASE) are gone, not aliased. Wire v8, the one bump: tag layers carry rows and cursor y, and the frame carries the placed region list. v7 and v9 peers are refused in both directions (server test over both, a new frontend test over both). web: tag_layer_value 11 = rows, 12 = cursor y; app.mjs lays every row. macOS: the Zig side compiles against Layer; pardes.h still sees one row per tag layer (accepted, the macOS shell is ignored for now). No visual change: snapshot goldens and the 17 GUI goldens byte-identical. Shared files touched: pardes.zig, Messages.zig, gui.zig, macos.zig, detached/client.zig, detached/server.zig, detached/wire.zig (plus web.zig, app.mjs, edit.zig, look.zig). Not touched: mouse.zig, tagline.zig, colors.zig, tty.zig, dump.zig, exec.zig, host_io.zig, panes.zig.