Eliah M0 — single tiled GTK3 window

• Type: feature (app / demo)
• Status: done
• Closed 2026-06-29 (board cleanup): apps/ide/eliah builds+runs in gui_suite (eliah_smoke); M0 window milestone delivered and the splitter gap was superseded by done/feature-eliah-layout-tree.
• Track: B (built with $(PXX_STABLE))
• Owner: Track B agent
• Parent: feature-eliah-ide
• Opened: 2026-06-22

Goal

Prove the dogfood path + window shell. One GTK3 window, fixed tiled layout, no modal/subwindows. Editor pane live; other panes stubbed. Compile with the pinned stable compiler, run, screenshot.

Scope

• apps/ide/garin/ — first render-agnostic stubs only as needed (editor buffer interface, project model placeholder). Keep faces out.
• apps/ide/eliah/main.pas — single TForm/window via lib/pcl:
  • tiled 4-pane layout: proj tree | editor | designer | output/props.
  • resizable splitters, NO floating/modal/subwindows.
  • editor pane: live text view backed by garin buffer (open/edit one file).
  • other panes: visible stubs (labels/placeholder boxes).
• apps/ide/README.md — naming decoder (garin/eliah/ilja).
• Build wiring: invokable with $(PXX_STABLE) (Makefile target or script).

Non-goals (later milestones)

• Form designer painting (M1). Builder integration (M2). Ilja/TUI.

Acceptance

• apps/ide/eliah compiles with $(PXX_STABLE) — zero workarounds.
• Running opens ONE window with the tiled layout; editor pane loads + edits a file; splitters resize; no extra windows pop.
• Screenshot captured.
• Any compiler gap hit → Track A ticket filed, referenced here. No workaround.

Log

• 2026-06-22 — opened + taken. First code slice of the IDE.
• 2026-06-22 — M0 built + ran. apps/ide/{README.md,build.sh,.gitignore}, garin/buffer.pas (TIdeBuffer, render-agnostic, textfile-backed), eliah/main.pas (single GTK3 window, 4 panes via gtk_fixed SetBounds: tree | editor | designer-stub | output-stub | props-stub). Editor live — loads its own source through the garin buffer (dogfood). Compiles clean with $(PXX_STABLE), zero workarounds, no compiler ticket needed. Screenshot captured (window titled "Eliah - IDE", tree + source visible).
  • Caveat (honest): panes use absolute bounds; window is resizable but panes do NOT reflow yet, and there are no drag-splitters. The ticket's "resizable splitters" is therefore NOT met — deferred to a follow-up (needs a layout pass on window size-allocate, or real GtkPaned in PCL). Fixed tiled layout only for now.
• 2026-06-23 — M0 advanced toward a working IDE (still single tiled window):
  • garin/runner.pas — render-agnostic process runner (RunCapture: launch + capture stdout + exit code; pxx writes diagnostics to stdout so compiler errors are captured).
  • eliah/main.pas rewritten: live project tree from GetDirectoryContents (click a folder to descend, "../" up, a file opens in the editor via the garin buffer); Compile button runs the pinned compiler on the open .pas and shows output; Run executes the built binary; build-output pane. Designer + object-inspector right column still stubs (M1).
  • Headless --smoke wired into tools/gui_suite.sh (eliah_ide): tree populates, opens a file, compiles it -> SMOKE OK. gui-suite green.
  • Bugs filed, NO workarounds bending app logic: feature-open-array-constructor-arg (RunCapture call had to pre-build a temp args array), and the Length(memo.Text) smoke check tripped bug-length-rejects-non-variable (folded the codegen manifestation in) — the smoke uses a string variable, which is idiomatic test code, not a hack.