Nine BattleViewer refinements from the latest review pass: 1. Mass radii were uniform in synthetic mode because `+layout.svelte` skipped `loadCore()` on the synthetic branch. The wasm bridge to `pkg/calc/ship.go` now boots in both modes so `computeBattleGroupMass` resolves a real FullMass and `radiusForMass` produces a per-battle scale. 2. Phantom-destroy clamp in `buildFrames`. Legacy emitters (KNNTS041 planet #7) log many more `Destroyed` lines against a group than the group's initial population — at frame 406 of 2317 the race totals previously hit zero on phantom shots and the scene blanked while playback continued silently. We now only shrink the per-group remaining count and the race totals when the group still has ships. The line still draws on phantom frames; only the counters stay sane. 3. Vogel sunflower positions are now reassigned by inward dot product before being handed to ranks: the rank-0 bucket — the one with the largest initial ship count — always lands at the most-inward spiral slot. The previous quarter-step anchor bias was too weak; ranks r ≥ 2 routinely overtook rank-0 toward the planet. The anchor offset is gone. 4. Bucket order inside a cluster is locked at battle start by each bucket's *initial* ship count (`num`), not its live `numLeft`. The position of every class circle stays put for the whole battle; only the label number changes as ships die. 5. Shot line + defender flash blink on a per-frame timer during play. The line stays on for the first 90 % of frame duration, off for the last 10 %, so two consecutive shots from the same attacker on the same defender look like two distinct pulses. On pause the line and flash stay drawn for inspection. 6. The defender's class circle now flashes red (destroyed) or green (shielded) in sync with the shot line, so the eye catches *who* was hit, not just where the line lands. 7. Battle log rows are buttons. Click / Enter / Space pauses playback and seeks to that shot. The list also auto-scrolls the current row into view so the highlight does not race off the bottom on long battles. 8. Race labels now sit above the cloud's bounding top instead of a fixed offset, so a dense cluster does not swallow its own race name. 9. Planet glyph + label switch to neutral grey (`#2a2f40` / `#4a5066` / `#6d7388`), keeping the planet "in the background" rather than competing with the combatants. Step-back icon switched to `◀︎◀︎` to mirror step-forward. Tests: two new Vitest cases cover the phantom-destroy clamp (single-race wipe, mixed-class race survives a class wipe). The existing 642 Vitest tests stay green; all four `battle-viewer` Playwright cases pass. Docs: `ui/docs/battle-viewer-ux.md` rewrites the cluster section (locked order + Vogel reassignment), adds Playback Details (blink + flash semantics), and a Phantom Destroys section explaining the clamp. Co-Authored-By: Claude Opus 4.7 (1M context) <noreply@anthropic.com>
ui — Galaxy Cross-Platform Client
ui/ hosts the new cross-platform Galaxy client. A single
TypeScript + Svelte source tree builds to five targets: web,
web-mobile, standalone PC (mac/win/linux), iOS, and Android. A
shared Go module (ui/core) carries envelope cryptography, the
FlatBuffers codec, keypair management, and a thin bridge over
pkg/calc/ for UI-side game math; it is compiled to WASM for the
web targets, gomobile native libraries for mobile, and embedded
directly in Wails on desktop. All network I/O lives on the
TypeScript side via ConnectRPC, so the Go module is a pure compute
boundary on every platform.
The legacy Fyne client under client/ is reference-only.
Nothing in ui/ imports from it.
The full staged implementation plan lives in PLAN.md. The
strategic rationale (why Svelte, why PixiJS, why Go-as-WASM, why
Wails+Capacitor) lives outside the repo at
~/.claude/plans/buzzing-questing-fountain.md. This README is a
quick orientation; deeper per-phase design notes earn their place
under ui/docs/ as they are introduced.
Targets
| Target | Wrapper | Toolchain | Phase |
|---|---|---|---|
| web | browser tab | Vite + WASM | 5+ |
| web-mobile | mobile browser | Vite + WASM | 5+ |
| desktop (mac) | Wails v2 | Go + Wails CLI | 31 |
| desktop (win) | Wails v2 | Go + Wails CLI | 31 |
| desktop (linux) | Wails v2 | Go + Wails CLI | 31 |
| iOS | Capacitor | gomobile + Xcode | 32+ |
| Android | Capacitor | gomobile + Gradle | 32+ |
Layered architecture
- TypeScript + Svelte 5 frontend, shared across all five targets, scaffolded with SvelteKit + Vite.
- PixiJS v8 with dual WebGPU/WebGL backend for the world map renderer.
- Go module
ui/core/as a compute-only library (canonical bytes, Ed25519 sign/verify, FlatBuffers codec, keypair, thin bridge topkg/calc/) compiled to WASM, gomobile, and Wails-embedded native. - TypeScript-side
Coreinterface with three adapters (WasmCore,WailsCore,CapacitorCore) selected at build time. GalaxyClienton top ofCoreperforms all network I/O via ConnectRPC (@connectrpc/connect-web) on every platform.- Per-platform storage: WebCrypto + IndexedDB on web, OS keychain
- SQLite on desktop, iOS Keychain / Android Keystore + SQLite on
mobile, all behind a single
KeyStoreandCacheTypeScript interface.
- SQLite on desktop, iOS Keychain / Android Keystore + SQLite on
mobile, all behind a single
- Mobile-first navigation: one active view occupies the main area at a time; the sidebar holds a single tool (calculator, inspector, or order) with persistent state on switch.
Repository layout
ui/
├── PLAN.md staged implementation plan (Phases 1-36)
├── Makefile wasm / ts-protos / web / mobile / desktop targets
├── README.md this file
├── buf.gen.yaml local-plugin TS Protobuf-ES generator
├── docs/ topic-based design notes
│ ├── auth-flow.md email-code login, session store, revocation
│ ├── i18n.md translation primitive, native-name picker, extensibility
│ ├── order-composer.md order draft model, persistence, history-mode wiring
│ ├── storage.md web KeyStore/Cache, IDB schema, baseline
│ ├── testing.md per-PR / release test tiers
│ └── wasm-toolchain.md TinyGo build, JSDOM loading, bundle budget
├── core/ ui/core Go module (canonical bytes, keypair)
├── wasm/ TinyGo entry point exposing Core to JS
└── frontend/ SvelteKit / Vite source
├── src/api/ GalaxyClient + typed Connect client + auth + session
├── src/lib/ env config, session store, revocation watcher
├── src/platform/core/ Core interface + WasmCore adapter
├── src/platform/store/ KeyStore/Cache interfaces + web adapter
├── src/proto/ generated Protobuf-ES + Connect descriptors + FlatBuffers TS bindings
├── src/routes/ SvelteKit routes (/, /login, /lobby, /lobby/create)
└── static/ core.wasm + wasm_exec.js (committed artefacts)
Linked topic docs:
docs/auth-flow.md— email-code login, session store state machine, revocation watcher.docs/lobby.md— lobby UI sections, application / invite lifecycle, create-game form defaults.docs/i18n.md— translation primitive, native-name language picker, recipe for adding a new locale.docs/storage.md— web KeyStore/Cache, IndexedDB schema, browser baseline.docs/order-composer.md— local order draft store, persistence, history-mode wiring.docs/wasm-toolchain.md— TinyGo build, loading recipe, bundle size budget.docs/testing.md— Tier 1 per-PR + Tier 2 release test tiers.
ui/
├── README.md this file
├── PLAN.md staged implementation plan
├── Makefile cross-target build placeholders
├── pnpm-workspace.yaml pnpm workspace root
├── .gitignore
├── docs/ per-phase topic docs (added per phase)
├── frontend/ TS + Svelte source, shared across targets
├── core/ Go module ui/core (Phase 3+)
├── wasm/ TinyGo entry point for core.wasm (Phase 5)
├── mobile-bridge/ gomobile bindings (Phase 32+)
├── desktop/ Wails project (Phase 31)
├── mobile/ Capacitor project (Phase 32+)
└── web/ static deploy assets (Phase 30+)
Build pipeline
Every cross-target build flows through make at this level. All
named targets are placeholders until the named phase lands; running
make with no arguments prints the current placeholder map.
make web Vite production build Phase 5+
make wasm TinyGo → core.wasm Phase 5
make ts-protos Connect-ES + Protobuf-ES gen Phase 5
make fbs-ts FlatBuffers TS bindings via flatc Phase 8
make gomobile gomobile bind → ios + android Phase 32+
make desktop-mac Wails build for darwin Phase 31
make desktop-win Wails build for windows Phase 31
make desktop-linux Wails build for linux Phase 31
make ios Capacitor + xcodebuild Phase 32+
make android Capacitor + gradle Phase 32+
make all every target above
Local development
For UI work against a real stack, the tools/local-dev/ docker
compose brings up postgres + redis + mailpit + backend + gateway in
one command, and ui/frontend/.env.development is already wired to
talk to it:
make -C tools/local-dev up # build + start, wait for healthy
pnpm -C ui/frontend dev # Vite on the host
# UI: http://localhost:5173
# Mailpit: http://localhost:8025
The stack accepts a fixed dev code (123456) in addition to the
real Mailpit-delivered one. Full runbook in
../tools/local-dev/README.md.
Per-phase docs
Topic docs live under ui/docs/ and are added per phase as they're
needed (testing tiers, WASM toolchain, navigation shell, renderer
internals, sync protocol, auth flow, and so on). The staged plan in
PLAN.md names the topic doc each phase produces.
Cross-references
PLAN.md— staged implementation plan with goals, artifacts, dependencies, acceptance criteria, and targeted tests per phase.../docs/ARCHITECTURE.md— platform architecture and the transport security model (§15) the client envelope contract derives from.../docs/FUNCTIONAL.md— per-domain user stories that drive the UI flows.../docs/TESTING.md— project-wide testing layers; UI-specific test tiers (Vitest, Playwright) live inui/docs/testing.mdfrom Phase 2 onward.