Adds a Ships window that scans the stage containers, reconstructs each capital
ship from its XBG7 part family (via sylpheed_formats::ship), and renders the
whole assembled model in the 3D view on click.
- iso_loader: ShipBrowser resource + ShipRow (id, faction, name, parts, stage,
and linked Vessel stats: HP/size/turrets/bridges/shield gens), RequestShipCatalog
+ RequestShipRender events, ShipCatalogLoaded message. build_ship_catalog scans
Stage_S01..S30, groups resources into ships, joins Vessel recipes by id, and
sorts capital ships (Vessel-matched) first. handle_ship_render_request decodes
only the ship's parts (models_named) and assembles them off-thread, reusing the
existing XprPrepared → apply_prepared_xpr render + camera-focus path.
- prepare_models gains an `assemble` mode (prepare_ship): parts share ONE recentre
so each keeps its ship-local offset (bridge fore, engines aft) instead of the
per-model recentre / thumbnail grid used for a stage browse.
- ui: draw_ships_ui (own system, keeps draw_viewer_ui under the 16-param limit) —
faction filter chips, name/id search, collapsible per-ship stat cards with an
"Assemble & view in 3D" button; colour-coded by faction. View ▸ Ships menu item.
Co-Authored-By: Claude Opus 4.8 <noreply@anthropic.com>
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