feat(vagrant): notification system — Inspect modal, pickup-float, toast events, game-log

- manifest: bump to v0.10.0; add deps lib-core.notify, lib-core.notify-display,
  lib-core.world-overlay (all v0.1.0)
- Inspect action migrated from engine.print to notify.post{tags={"inspect"}, data={...}};
  routes to modal detail-panel via notify-display detail-channel
- Pickup callback: world_overlay.spawn fires "+1 <name>" float anchored on player
  (yellow, rise_px=24, ttl=1.2s) + notify.post pickup event-toast/log entry
- Drop action (right-click menu): notify.post{tags={"drop","inventory"}} added
  after existing relocate+close_menu logic
- Setup block: 3 channels (inspect/events/log), 2 panel widgets
  (inspect-detail/game-log), 3 attach_mode calls; L bound to game-log panel
- M.update: notify_display.update + world_overlay.update after panel.update pause-guard
- M.draw: camera_handle constructed after camera.finish(); world_overlay.render between
  camera.finish and panel.render; notify_display.render at end (toasts on top)
- README: version 0.10.0, Requires expanded, Controls section updated, changelog entry added

manifest.module

@@ -1,6 +1,6 @@
 {
     "id": "vagrant-skeleton",
-    "version": "0.9.1",
+    "version": "0.10.0",
     "kind": "module",
     "api": "^0.1",
     "ci_frames": 60,
@@ -19,6 +19,9 @@
         {"id": "lib-core.actor",                  "version": "0.1.0"},
         {"id": "lib-core.panel",                  "version": "0.1.0"},
         {"id": "lib-core.inventory-list-display", "version": "0.1.1"},
+        {"id": "lib-core.notify",                 "version": "0.1.0"},
+        {"id": "lib-core.notify-display",         "version": "0.1.0"},
+        {"id": "lib-core.world-overlay",          "version": "0.1.0"},
         {"id": "lib-core.maps","version":"0.5.7"},
         {"id": "lib-core.puppet",                 "version": "0.5.0"},
         {"id": "lib-core.interaction",            "version": "0.1.0"},