Unify Shared SVG Texture Pipeline #788

Summary

Use shared/core SVG texture helpers for all Main Street card rendering paths and migrate residual scene-local logic.

Player and user experience impact

• Player experience: Card visuals remain visible and correctly occluded by overlays using Phaser layer/depth semantics.
• Developer experience: One consistent rendering path with reduced DOM-specific maintenance overhead.

Acceptance Criteria

• All Main Street card render locations use shared/core SVG texture helpers.
• Residual Main Street-only rasterization logic is migrated or removed.
• Texture keys remain deterministic across template/size/DPR combinations.
• Card interactions (hit areas/selection) remain behaviorally unchanged.

Minimal Implementation (end-to-end slice)

• Audit market/street/hand/event render call sites and map to shared helper APIs.
• Replace bespoke Main Street rendering branches with shared helper invocations.
• Preserve canonical card dimensions/aspect behavior from docs/main-street/card-dimensions.md.
• Add coverage for hand, market, and street texture rendering paths.

Dependencies

• Remove DOM Renderer Path

Deliverables

• Refactored render flow
• Updated tests
• Code comments/API notes

References

• Parent: Phaser-native rendering for DOM SVG card visuals (replace svgDom) (CG-0MP8YFNX4007N9ZU)