Move colony management (sliders, build queue, catalogue) from the
system-view modal into a dedicated full-screen colony view
(VegaColonyView.js). The system view now inspects worlds read-only
with a "View Colony" button to open the management screen.
Key changes:
- Add VegaColonyView.js with colony screen, build queue flyout,
scrolling catalogue, allocation sliders with padlocks, and
planet-type backdrops
- Add world backdrop artwork support (1920×1080, one per planet type)
declared in mastervega-artwork.json worldBackgrounds
- Add headless queue helpers to VegaLogic.js: collapseQueue,
moveQueueRun, colonyBuildRate, queueEtas, enqueueMany
- Fix star map pointer blocking (drags no longer pan map through modal)
- Move ORBIT constant to VegaScreens.js, add D.colony depth layer
- Update docs (build-plan, sprites) and verification suite
The colony screen stacks over the system view without requiring a
second modal, hiding the system layer and pausing the orrery while
open.
