Files
Ilia Denisov ce7a66b3e6 ui/phase-11: map wired to live game state
Replaces the Phase 10 map stub with live planet rendering driven by
`user.games.report`, and wires the header turn counter to the same
data. Phase 11's frontend sits on a per-game `GameStateStore` that
lives in `lib/game-state.svelte.ts`: the in-game shell layout
instantiates one per game, exposes it through Svelte context, and
disposes it on remount. The store discovers the game's current turn
through `lobby.my.games.list`, fetches the matching report, and
exposes a TS-friendly snapshot to the header turn counter, the map
view, and the inspector / order / calculator tabs that later phases
will plug onto the same instance.

The pipeline forced one cross-stage decision: the user surface needs
the current turn number to know which report to fetch, but
`GameSummary` did not expose it. Phase 11 extends the lobby
catalogue (FB schema, transcoder, Go model, backend
gameSummaryWire, gateway decoders, openapi, TS bindings,
api/lobby.ts) with `current_turn:int32`. The data was already
tracked in backend's `RuntimeSnapshot.CurrentTurn`; surfacing it is
a wire change only. Two alternatives were rejected: a brand-new
`user.games.state` message (full wire-flow for one field) and
hard-coding `turn=0` (works for the dev sandbox, which never
advances past zero, but renders the initial state for any real
game). The change crosses Phase 8's already-shipped catalogue per
the project's "decisions baked back into the live plan" rule —
existing tests and fixtures are updated in the same patch.

The state binding lives in `map/state-binding.ts::reportToWorld`:
one Point primitive per planet across all four kinds (local /
other / uninhabited / unidentified) with distinct fill colours,
fill alphas, and point radii so the user can tell them apart at a
glance. The planet engine number is reused as the primitive id so
a hit-test result resolves directly to a planet without an extra
lookup table. Zero-planet reports yield a well-formed empty world;
malformed dimensions fall back to 1×1 so a bad report cannot crash
the renderer.

The map view's mount effect creates the renderer once and skips
re-mount on no-op refreshes (same turn, same wrap mode); a turn
change or wrap-mode flip disposes and recreates it. The renderer's
external API does not yet expose `setWorld`; Phase 24 / 34 will
extract it once high-frequency updates land. The store installs a
`visibilitychange` listener that calls `refresh()` when the tab
regains focus.

Wrap-mode preference uses `Cache` namespace `game-prefs`, key
`<gameId>/wrap-mode`, default `torus`. Phase 11 reads through
`store.wrapMode`; Phase 29 wires the toggle UI on top of
`setWrapMode`.

Tests: Vitest unit coverage for `reportToWorld` (every kind,
ids, styling, empty / zero-dimension edges, priority order) and
for the store lifecycle (init success, missing-membership error,
forbidden-result error, `setTurn`, wrap-mode persistence across
instances, `failBootstrap`). Playwright e2e mocks the gateway for
`lobby.my.games.list` and `user.games.report` and asserts the
live data path: turn counter shows the reported turn,
`active-view-map` flips to `data-status="ready"`, and
`data-planet-count` matches the fixture count. The zero-planet
regression and the missing-membership error path are covered.

Phase 11 status stays `pending` in `ui/PLAN.md` until the local-ci
run lands green; flipping to `done` follows in the next commit per
the per-stage CI gate in `CLAUDE.md`.

Co-Authored-By: Claude Opus 4.7 <noreply@anthropic.com>
2026-05-08 21:17:17 +02:00

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Markdown

# Lobby UI
The lobby is the first authenticated view; the user lands here after
the email-code login completes (see
[`docs/auth-flow.md`](auth-flow.md)). Phase 8 introduced the live
lobby with five sections, the create-game form, and the TS-side
FlatBuffers integration the rest of the client builds on. This doc
captures the sections, the application / invite lifecycle the user
sees, and the defaults baked into the create-game form.
## Sections
The lobby renders one column of sections, top to bottom, with the
common content max-width capped at `32rem` (same convention as the
login page). Cards inside each section take the full available
width.
| Section | Empty state | Source | Action |
| -------------------- | --------------------- | -------------------------- | --------------------------------------------------------- |
| `create new game` | (always visible) | — | Navigates to `/lobby/create` |
| `my games` | `no games yet` | `lobby.my.games.list` | Click → `/games/:id/map` |
| `pending invitations`| `no invitations` | `lobby.my.invites.list` | Accept (`lobby.invite.redeem`) / Decline (`lobby.invite.decline`) |
| `my applications` | `no applications` | `lobby.my.applications.list` | Status badge (`pending` / `approved` / `rejected`) |
| `public games` | `no public games` | `lobby.public.games.list` | Submit application via inline race-name form (`lobby.application.submit`) |
The header preserves the device-session-id `<code>` block from the
Phase 7 placeholder (kept as a debug affordance) plus a greeting if
the gateway returns a `display_name` for the caller.
`GameSummary` carries an extra `current_turn` field (Phase 11
extension) that the lobby UI does not display directly — the in-game
shell reads it from the same payload to load the matching
`user.games.report` for the map view without an additional gateway
call. See [`game-state.md`](game-state.md) for the consumer's view.
## Application lifecycle
`Submit application` on a public-game card toggles an inline race-name
form on the same card (no overlay/modal infrastructure yet — the
in-game shell that introduces overlays lands later). On submit:
1. The page calls `submitApplication(client, gameId, raceName)` from
`src/api/lobby.ts`.
2. The wrapper builds an `ApplicationSubmitRequest` FlatBuffers
payload, posts it through `GalaxyClient.executeCommand`, decodes
the `ApplicationSubmitResponse`, and returns an
`ApplicationSummary` plain object.
3. The lobby page prepends the new application to the
`my applications` list and collapses the inline form. The page
does not refresh the public-games list — backend semantics are
that the public game still exists and is still in
`enrollment_open`.
4. Status starts as `pending`. When the owner approves, backend
creates a membership and the next refresh of `lobby.my.games.list`
surfaces the game in `my games`. When the owner rejects, the
application stays terminal in `my applications` with status
`rejected`.
## Invite lifecycle
A pending invite arrives in `pending invitations` either when the
inviter targets the user by id (`invited_user_id` is set) or when the
user redeems a code-based invite from somewhere outside the lobby.
The user can accept (`lobby.invite.redeem`) or decline
(`lobby.invite.decline`):
- **Accept** — the invite card disappears, the page refreshes
`my games`, and the freshly-joined game appears there.
- **Decline** — the invite card disappears. No membership is
created.
## Create-game form
The form posts `lobby.game.create` through the gateway with
`visibility="private"` hard-coded; the user surface never produces a
public game (FUNCTIONAL.md §3.3). Fields:
| Field | Visibility | Default | Notes |
| --------------------- | ---------------- | ------- | ------------------------------------------------------ |
| `game_name` | always | `""` | Non-empty client-side check |
| `description` | always | `""` | |
| `turn_schedule` | always | `0 0 * * *` | Plain text input, hint says "five-field cron" |
| `enrollment_ends_at` | always | `""` | `<input type="datetime-local">`, RFC 3339 on submit |
| `min_players` | Advanced toggle | `2` | `<details>` block |
| `max_players` | Advanced toggle | `8` | |
| `start_gap_hours` | Advanced toggle | `24` | |
| `start_gap_players` | Advanced toggle | `2` | |
| `target_engine_version` | Advanced toggle | `v1` | Falls back to `v1` if blank |
On success the page navigates back to `/lobby` and the new game shows
up in `my games` once the lobby's onMount has had a chance to refresh
the list.
## Errors
Lobby errors raised by the gateway carry a canonical code
(`invalid_request`, `subject_not_found`, `forbidden`, `conflict`,
`internal_error`). The `LobbyError` thrown by `lobby.ts` exposes the
code; the page maps it to the matching `lobby.error.<code>` i18n key
and falls back to the gateway-supplied message via
`lobby.error.unknown` for any unknown code.
## Why FlatBuffers on the TS side
The gateway encodes lobby payloads through `pkg/transcoder/lobby.go`
into FlatBuffers bytes; the browser must decode them with the same
schema. Phase 8 ships:
- `flatbuffers` runtime dependency in `ui/frontend/package.json`;
- `make -C ui fbs-ts` driving `flatc --ts` to regenerate the bindings
from `pkg/schema/fbs/*.fbs` into `ui/frontend/src/proto/galaxy/fbs/`;
- a Vitest round-trip suite (`tests/lobby-fbs.test.ts`) that catches
binding drift in CI.
Phase 7's `user.account.get` decode previously used
`JSON.parse(TextDecoder)`; that path was rewritten in Phase 8 to use
the same generated `AccountResponse` table, so the lobby greeting now
works against a real local stack as well as the mocked Playwright
fixtures.