feat(ui): Phase 30 ship-class calculator with goal-seek and reach circles

Fuse the standalone ship-class designer (Phases 17/18) into a sidebar calculator: live mass/speed/attack/defence/bombing results, a planet build-rate readout, single-target goal-seek, a modernization-cost mode, and auto reach circles on the map for the selected planet.

pkg/calc becomes the single source for the new math (no mirroring): extract BombingPower from the engine model and the per-turn ship-production loop from controller.ProduceShip into pkg/calc (engine now delegates), and add inverse goal-seek solvers in pkg/calc/solve.go. Thin-bridge the combat, planet-build, and solver functions through ui/core/calc + ui/wasm and rebuild core.wasm.

Remove the standalone designer view/route; the ship-classes table and the view/bottom menus open the calculator via a shared request store.

Docs: rewrite ui/PLAN.md Phase 30, adjust Phase 34 (realistic forecast + CAP/COL ownership), add ui/docs/calculator-ux.md, extend calc-bridge.md, fix navigation.md; remove ui/CALCULATOR.md.

Co-Authored-By: Claude Opus 4.7 (1M context) <noreply@anthropic.com>

game/internal/controller/planet.go

@@ -272,29 +272,19 @@ func ProduceShip(p *game.Planet, productionAvailable, shipMass float64) uint {
 	if productionAvailable <= 0 {
 		return 0
 	}
-	ships := uint(0)
-	pa := productionAvailable
-	var MATneed, totalCost float64
-	for {
-		MATneed = shipMass - float64(p.Material)
-		if MATneed < 0 {
-			MATneed = 0
-		}
-		totalCost = calc.ShipBuildCost(shipMass, float64(p.Material), float64(p.Resources))
-		if pa < totalCost {
-			progress := pa / totalCost
-			pval := game.F(progress)
-			if p.Production.Progress != nil {
-				pval += *p.Production.Progress
-			}
-			p.Production.Progress = &pval
-			fval := game.F(pa)
-			p.Production.ProdUsed = &fval
-			return ships
-		} else {
-			pa -= totalCost
-			p.Mat(float64(p.Material) - shipMass + MATneed)
-			ships += 1
-		}
+	ships, materialLeft, productionUsed, progress := calc.ProduceShipsInTurn(
+		productionAvailable,
+		float64(p.Material),
+		float64(p.Resources),
+		shipMass,
+	)
+	p.Mat(materialLeft)
+	pval := game.F(progress)
+	if p.Production.Progress != nil {
+		pval += *p.Production.Progress
 	}
+	p.Production.Progress = &pval
+	used := game.F(productionUsed)
+	p.Production.ProdUsed = &used
+	return ships
 }

game/internal/model/game/group.go

@@ -3,7 +3,6 @@ package game
 import (
 	"fmt"
 	"galaxy/calc"
-	"math"
 	"strings"
 
 	"github.com/google/uuid"
@@ -208,11 +207,12 @@ func (sg ShipGroup) Speed(st *ShipType) float64 {
 
 // Мощность бомбардировки
 func (sg ShipGroup) BombingPower(st *ShipType) float64 {
-	return (math.Sqrt(st.Weapons.F()*sg.TechLevel(TechWeapons).F())/10. + 1.) *
-		st.Weapons.F() *
-		sg.TechLevel(TechWeapons).F() *
-		float64(st.Armament) *
-		float64(sg.Number)
+	return calc.BombingPower(
+		st.Weapons.F(),
+		sg.TechLevel(TechWeapons).F(),
+		float64(st.Armament),
+		float64(sg.Number),
+	)
 }
 
 func (sg ShipGroup) CargoString() string {