test: v0.4.0 focus/drag/resize assertions

Adds 46 new W.3 assertions covering: focus(id) reorders within open_order;
focus(hud) no-op; raise alias; lower(id) to bottom; get_focused tier
priority + nil-when-empty; click-to-focus auto-routing; drag updates
bounds_override; drag screen-clamp on all four edges; resize updates
bounds_override; min_size + max_size clamps; dispatch-time drag-start +
resize-start consume the click; chromeless drag-start excluded;
bounds_override survives drag-end and is respected by point_in_any_panel.

Bumps panel-test 0.3.0 -> 0.4.0 + panel-dep 0.4.0.

Co-Authored-By: Claude Opus 4.7 (1M context) <noreply@anthropic.com>

README.md

@@ -1,18 +1,23 @@
 # lib-core.panel-test
 
-Test-module for `lib-core.panel`. v0.3.0 expands to 79 assertions:
+Test-module for `lib-core.panel`. v0.4.0 expands to 128 assertions:
 - v0.1.x: registry lifecycle, theme validation, error handling,
   pause-gate, context-menu dispatch.
 - v0.2.0 (W.0): multi-active model, 11 layout-slots, custom-fn layout,
   hit-test reverse-open-order, bw-compat shim.
 - v0.3.0 (W.2): z-tiers (hud/normal/top), persistent windows,
   input_block routing (none/self/all), default-input_block per tier,
-  panel.point_in_any_panel public API.
+  panel.point_in_any_panel public API, chromeless guards, top-tier
+  modal swallow.
+- v0.4.0 (W.3): focus API (focus/raise/lower/get_focused),
+  click-to-focus auto-routing, drag-by-title-bar with 32px
+  screen-clamp, resize-by-SE-corner with min/max_size clamps,
+  bounds_override pattern persistence, chromeless drag guard.
 
-**Version:** 0.3.0
+**Version:** 0.4.0
 **Lib-ID:** lib-core.panel-test
-**Requires:** lib-core.panel v0.3.0
-**Tags:** test, panel, ui, window-manager
+**Requires:** lib-core.panel v0.4.0
+**Tags:** test, panel, ui, window-manager, focus, drag, resize
 
 ## Running
 
@@ -23,9 +28,9 @@ SPOREL_LIBS_DIR=~/Projects/Sporel/sporel-libs SPOREL_CI=1 SPOREL_LOG_STDERR=1 \
     ./build/Sporel.exe --test-libs=lib-core.panel-test 2>&1 | tail -15
 ```
 
-Expected: `pass=79 fail=0`.
+Expected: `pass=128 fail=0`.
 
-## Assertion Summary (v0.3.0)
+## Assertion Summary (v0.4.0)
 
 **v0.1.x baseline (10 assertions):**
 1. register + open / close round-trip
@@ -45,7 +50,7 @@ layout-slot resolution (left-half, right-half, center, custom fn),
 loud-error on unknown slot, hit-test reverse-open-order, is_pausing
 across all open windows.
 
-**v0.3.0 W.2 z-tiers + persistent + input-block (25 assertions):**
+**v0.3.0 W.2 z-tiers + persistent + input-block (28 assertions):**
 - persistent flag auto-opens at register-time + is in open_order
 - z_tier render-order is hud → normal → top
 - within z_tier, open-order preserved
@@ -58,3 +63,21 @@ across all open windows.
 - Loud-Error on unknown input_block
 - default input_block per tier (hud=none, normal=self, top=all)
 - point_in_any_panel public API (inside / outside / none open)
+- chromeless suppresses phantom close-button hit-test
+- top-tier modal swallows outside-clicks before lower tiers can claim
+
+**v0.4.0 W.3 focus + drag + resize (46 assertions):**
+- focus(id) reorders within open_order; focus(hud) is no-op
+- raise alias = focus
+- lower(id) moves to bottom of open_order
+- get_focused() prioritizes top-tier over normal; nil when nothing open
+- click on window auto-focuses (non-hud only)
+- drag updates bounds_override (simulate-backdoor)
+- drag screen-clamp keeps 32px of title-bar visible on all edges
+- resize updates bounds_override (SE-corner; simulate-backdoor)
+- resize min_size + max_size constraints clamp correctly
+- dispatch-time drag-start fires on real title-bar click
+- dispatch-time resize-start fires on real SE-corner click
+- chromeless widget does NOT drag-start on top-area click
+- bounds_override survives drag-end (persists in window record)
+- point_in_any_panel respects bounds_override