Introduce UI interaction state, primitives, and layout/theme catalog updates

[hybernia1]

Motivation

• Centralize UI open/interaction flags and unify cursor/pointer-lock behavior to avoid scattered state and duplicated logic.
• Provide consistent layout and theme primitives so UI components share sizes, spacing, colors and z-index values.
• Replace ad-hoc UI styling with reusable primitives for panels, overlays and buttons to simplify future UI work.

Description

• Added createUiInteractionState in src/core/ui/uiInteractionState.js to track inventoryOpen, consoleOpen, lootOpen, and deathOpen and expose isGameplayInputBlocked, isCursorVisible, getState and onChange APIs.
• Introduced uiPrimitives in src/core/ui/uiPrimitives.js with createUiPanel, createUiOverlay, and createUiButton that consume uiThemeCatalog and uiLayoutCatalog values.
• Extended uiLayoutCatalog and uiThemeCatalog (src/content/*) with new spacing, border, radius, zIndex, typography and component size entries, and new color tokens for buttons, slots, overlays and feedback.
• Reworked createScene in src/core/scene/sceneFactory.js to use the new uiInteractionState, pass open-state callbacks into HUDs, and centralize cursor and pointer-lock handling in the scene's onBeforeRenderObservable.
• Updated multiple UI components to use the new theme/layout primitives and tokens, including consoleChat, inventoryHud, playerDeathHud, playerVitalsHud, itemHoverTooltip, and timeHud, replacing hardcoded sizes/colors/padding and plumbing visibility callbacks to uiInteractionState.

Testing

• Ran the existing automated test suite with npm test and the tests completed successfully.
• Ran linting with npm run lint which returned no new errors.
• Performed a local dev build (npm run dev) to ensure no runtime module resolution errors occurred during integration of the new UI modules.

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Codex Task