ui/phase-23: turn-report view with twenty sections and TOC

Replaces the Phase 10 report stub with a scrollable orchestrator that
renders every FBS array as a dedicated section (galaxy summary, votes,
player status, my/foreign sciences, my/foreign ship classes, battles,
bombings, approaching groups, my/foreign/uninhabited/unknown planets,
ships in production, cargo routes, my fleets, my/foreign/unidentified
ship groups). A sticky table of contents (a <select> on mobile),
"back to map" affordance, IntersectionObserver-driven active-section
highlight, and SvelteKit Snapshot-based scroll save/restore round out
the view.

GameReport gains six new fields (players, otherScience, otherShipClass,
battleIds, bombings, shipProductions); decodeReport, the synthetic-
report loader, the e2e fixture builder, and EMPTY_SHIP_GROUPS extend
in lockstep. ~90 new i18n keys land in en + ru together.

The legacy-report parser is extended to populate the new sections from
the dg/gplus text formats (Your Sciences, <Race> Sciences, <Race> Ship
Types, Bombings, Ships In Production). Ships-in-production prod_used
is derived through a new pkg/calc.ShipBuildCost helper; the engine's
controller.ProduceShip refactors to call the same helper without any
behaviour change (engine tests stay unchanged and green). Battles
remain in the parser's Skipped list — the legacy text carries no
stable per-battle UUID.

Co-Authored-By: Claude Opus 4.7 <noreply@anthropic.com>

ui/docs/navigation.md

@@ -24,7 +24,7 @@ separate dispatch component.
 | ------------------------------------------ | ---------------------------------------------- | ----------------------- |
 | `/games/:id/map`                           | `lib/active-view/map.svelte`                   | Phase 11                |
 | `/games/:id/table/:entity`                 | `lib/active-view/table.svelte`                 | Phase 11 / 17 / 19 / 22 |
-| `/games/:id/report`                        | `lib/active-view/report.svelte`                | Phase 23                |
+| `/games/:id/report`                        | `lib/active-view/report.svelte` (see [report-view.md](report-view.md)) | Phase 23 |
 | `/games/:id/battle/:battleId?`             | `lib/active-view/battle.svelte`                | Phase 27                |
 | `/games/:id/mail`                          | `lib/active-view/mail.svelte`                  | Phase 28                |
 | `/games/:id/designer/ship-class/:classId?` | `lib/active-view/designer-ship-class.svelte`   | Phase 17 (CRUD) / 18 (calc preview) |