Right pane tabs Jobs/Planes market + 5 new plane types with tech-spec panels + sell-plane cargo guard (ISS-047 part A)

CHANGELOG.md

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 # Changelog
 
+## v0.28.0 — 2026-09-20 13:55
+- **Right pane reworked into tabs (ISS-047, part A).** The right pane now has a tab bar under the "Jobs & Market" heading with two tabs — `tab-jobs` ("Jobs", default-active) and `tab-planes-market` ("Planes market") (`components/RightPane.tsx`, new `.pane-tabs`/`.tab-btn` CSS in `app/globals.css`). The Jobs tab is the existing Packages section moved verbatim (content, testids and hover behavior unchanged); the Planes market tab holds the existing buy/sell rows (testids unchanged) plus a tech-spec panel per catalog type — one card (`plane-type-{model}`) with price, sell value (price × SELL_FRACTION), max payload in tonnes, cruise speed, fuel burn, max fuel and **max range**, ordered by price ascending. The inactive tab unmounts; the `cargoWeightFor`/`loadEligiblePlanes` exports are untouched
+- **Five new plane types — progression ladder above the ATR starter (ISS-047).** CRJ-900 (€450k), Embraer E175 (€900k), Airbus A320-200 (€1.8M), Airbus A330-200 (€4.5M) and Boeing 777-300ER (€9M) added to `PLANE_TYPES` in `lib/game/catalog.ts` with the exact balance values from the issue (bigger tanks, faster airframes, more payload). Purely additive — everything downstream (buy validation, movement math, load validation, snapshot catalog) is data-driven via `PLANE_TYPES[model]`, so no endpoint or schema change; the OpenAPI spec and its e2e path list stay at twelve
+- **Derived max range (ISS-047).** New pure `maxRangeKm(burnPerKm, emptyWeightKg, maxFuel)` in `lib/sim/movement.ts` — closed form of the weighted burn model solving `requiredFuelFor(d) = maxFuel`: `ln(1 + ρF/We)·(We + ρF)/(ρ·burnPerKm)` (reuses `FUEL_DENSITY_KG_PER_L`, guards We > 0, zero fuel → 0). ATR 72-600 full tank ≈ 4436 km. Display-only — the sim still does not model range exhaustion
+- **Sell-plane cargo guard (ISS-047).** `sellPlane` (`lib/game/actions.ts`) now 409s with "cannot sell a plane carrying cargo" when the grounded plane has any `loaded`/`expired` packages bound to it — previously selling such a plane orphaned its cargo (packages stuck 'loaded' with a dangling planeId that could never deliver). Same query pattern as `loadPackage`; the last-plane and flying-plane guards are unchanged
+- Tests: unit — new `lib/sim/movement.test.ts` block for `maxRangeKm` (ATR ≈ 4439 km ±5%, monotonic in tank size, inverse in burn rate, zero fuel → 0, We ≤ 0 throws), new `lib/game/catalog.test.ts` sanity file (positive specs + unique ids across all six types, atr72 is STARTER_MODEL), `lib/game/actions.test.ts` sellPlane gains a loaded-cargo 409 case (row left untouched). E2E — `e2e/right-pane.spec.ts`: the market test clicks `tab-planes-market` first and a new "Planes market tab lists all plane types with tech specs" test asserts six catalog entries via /api/state, the ATR card's name + range against an in-test mirror of `maxRangeKm`, and the Boeing 777 card with its €9M price; `e2e/toasts.spec.ts` clicks the tab before its market-buy flow; `e2e/panes.spec.ts` asserts both tab buttons render with Jobs default-active. No new endpoints — `lib/openapi.test.ts` untouched
+- Verified: `tsc --noEmit` clean; unit suite green locally (318, was 311); `npx playwright test --list` = 46 tests in 13 files (was 45/13 — the new spec-panel test); e2e not run locally by design — CI verifies against an isolated stack
+
 ## v0.27.1 — 2026-09-20 13:16
 - Right pane widened from 280px to 360px to match the left pane; toast stack offset adjusted to stay flush with the map's right edge (ISS-046).