Add spirit ghost aura visuals for The Beyond cards

[wdqin]

Title:
Add ghost aura visuals for The Beyond spirit deck and manifested spirits

Related Issue ID: 3993
#3993

Summary:
This is a visual enhancement that displays cards related to Jim's spirit deck in a fancy way. It adds ghost aura visuals for Parallel Jim Culver’s The Beyond: Bleak Netherworld, covering both the hidden spirit deck in the player area and manifested spirits that enter play from it.

It's not a bug fix, but a nice to have.

Problem:
The spirit deck and manifested spirits had no visual distinction in the UI, so it was hard to tell at a glance which cards were part of The Beyond’s spirit system.

There was also an implementation constraint: hidden spirit deck cards must not leak any card-specific information, while manifested spirits should be allowed to have distinct visual treatment because they are already public.

Change:

Added frontend support for decoding AttachedToAsset placements instead of collapsing them into a generic fallback
Added spirit-visual helpers to detect:

• The Beyond spirit deck host
• manifested spirit assets via IsSpirit
• manifested spirit enemies attached to The Beyond
  Added a reusable GhostOrbit visual component
  Added ghost SVG assets for spirit visuals
  Applied ghost aura visuals to:
• The Beyond spirit deck in the player area
• manifested spirit assets
• manifested spirit enemies attached to The Beyond
  Kept the hidden spirit deck on a fixed ghost style so it does not reveal deck contents
  Used different ghost SVGs and desynchronized animation timing for manifested spirits based on public cardCode
  Tuned the ghost motion range to stay closer to the card frame

Implementation references:
This change follows the existing frontend rendering flow for runtime card state in:

Placement decoding
Asset.vue
Enemy.vue

Files changed:

frontend/src/arkham/types/Placement.ts
frontend/src/arkham/spiritVisuals.ts
frontend/src/arkham/components/GhostOrbit.vue
frontend/src/arkham/components/Asset.vue
frontend/src/arkham/components/Enemy.vue
frontend/src/assets/ghost-orbit-1.svg
frontend/src/assets/ghost-orbit-2.svg
frontend/src/assets/ghost-orbit-3.svg

Test coverage:
Added validation coverage through manual runtime verification for:

The Beyond spirit deck showing a ghost aura in the player area
manifested spirit assets showing ghost aura automatically
manifested spirit enemies attached to The Beyond showing ghost aura automatically
hidden spirit deck visuals not changing based on unrevealed card contents
manifested spirit animations not moving in perfect sync
ghost motion staying within a tighter range around the card

Validation:
Ran:
npm run build

Result:
Build passed successfully.

I also verified in-game that the spirit deck uses a fixed ghost style, while manifested spirit cards use distinct ghost variants and no longer animate in perfect sync.