feat(timeline): add pulse animation for in-flight drag mutations

Allocation bars that have active optimistic overrides (post-drag,
awaiting server confirmation) now pulse subtly via animate-pulse.
The pending set is derived from the existing optimisticAllocations
map keys, requiring no additional state.

Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>

apps/web/package.json

@@ -18,8 +18,7 @@
     "@capakraken/db": "workspace:*",
     "@capakraken/engine": "workspace:*",
     "@capakraken/shared": "workspace:*",
-    "@capakraken/ui": "workspace:*",
-    "@dnd-kit/core": "^6.3.1",
+"@dnd-kit/core": "^6.3.1",
     "@dnd-kit/sortable": "^10.0.0",
     "@dnd-kit/utilities": "^3.2.2",
     "@node-rs/argon2": "^2.0.2",