Bundled layouts/default.ini (relocated from tests/artifacts/ in Phase 1)
contained a [Docking] data block with a hardcoded DockSpace ID 0xAFBEEF01
plus per-window DockId references to nodes 0x10 and 0x11. Those IDs were
captured at the time the layout was first generated; on any fresh session
HelloImgui computes dockspace IDs dynamically (typically a hash of the
dockspace name + creation order) so the hardcoded literal is stale by the
first render and the orphan docking instructions are silently dropped.
Result: window positions stored in the INI render the windows as
floating at their absolute Pos coordinates, but the auto-created
dockspace captures the full window body, hiding them all. User observed
empty dockspace with only the menu ribbon rendering.
Two-part fix:
1. layouts/default.ini: remove [Docking] data block and per-window DockId
lines. Comment rewritten to explain why the auto-dock strategy is the
only session-stable option. Each [Window] entry now has only Pos + Size
+ Collapsed=0, so HelloImgui's auto-dock layer places the panels as
tabs in the central dockspace on first render.
2. _install_default_layout_if_empty: after writing the bundled INI to
disk, also call imgui.load_ini_settings_from_memory(src_text) to force
the live HelloImgui session to apply the new INI. Without this, the
install only takes effect on the NEXT launch (since HelloImgui reads
cwd/manualslop_layout.ini BEFORE the post_init callback fires). With it,
first-launch panels appear immediately.
Tests:
- tests/test_default_layout_install.py assertions updated: instead of
checking for a per-window DockId line, the install now verifies (a)
[Window][Project Settings] entry exists, (b) the INI has at least one
[Window] entry, (c) the INI has no [Docking] data block.
- New _assert_live_session_apply() on tests 1 and 2 verifies the
"(and applied to live session)" log line appears in stderr, confirming
imgui.load_ini_settings_from_memory was invoked.
17/17 tests pass (3 install + 2 reset_layout + 8 adjacent gui/commands).
ed