Implements world_persistence_impl.md §9 client/editor task items 2-3:
- ChunkSaveService (scripts/editor/chunk_save_service.gd): single-chunk
PUT with base_revision, batch PUT for multi-chunk edits, and a real
409 -> re-fetch -> retry loop. Full-chunk overwrite (§8.2 D5) means
"re-apply the edit" is just retrying with the locally-edited payload
at the freshly-learned revision, not delta replay.
- InGameEditor gets a Save button (+ Ctrl+S) that surfaces live_session
as an explicit warning instead of ignoring it, per §6 D4.
- "Edit World" entry point on the world list (owner-gated) that calls
Session.begin_edit() instead of ApiClient.join_world() -- editing
never joins, opens no ENet connection, spawns no dedicated server.
- game.gd wires Session.editing to fetch the real (0,0,0) chunk over
HTTP and open the editor against it, falling back to an empty chunk
for an unwritten coordinate.
Verified against a real backend (register/world/save/reload, a genuine
409 from two racing saves, atomic 2-chunk batch, live_session field) --
new scripts/smoke_test_editor_save.gd (19/19) plus an extended
smoke_test_world_list.gd covering the non-joined entry point (11/11).
Full existing Godot smoke suite (18 files) and backend pytest (132)
still pass unchanged.
Co-Authored-By: Claude Sonnet 5 <noreply@anthropic.com>
Claude-Session: https://claude.ai/code/session_01Y2FESCaMXeJpC9gSctiEeD
- Session autoload: carries {world_id, host, port} from the world browser
to the game scene.
- world_list.gd "Enter World": POST /api/worlds/{id}/join -> Session.begin
-> load game.tscn. On 503 (backend has no orchestration) falls back to
local single-player; other errors surface on the card.
- api_client.gd: join_world().
- game.gd (new, on game.tscn root): local single-player by default; when
Session.active, connects a NetworkClient to the world's dedicated server
and runs networked -- forwards the local Player's input each physics
frame, snaps to the server position past a generous drift threshold
(the Player keeps predicting locally with real collision), renders other
players from snapshots (labelled capsules, lerped -- avatar appearance
sync is a follow-up, the server doesn't replicate loadouts yet), and
returns to the world list on disconnect.
- player.gd: exposes net_input (the input frame it applied) and
apply_server_correction().
- network_client.gd: send_input() + get_own_server_state() for callers that
do their own collision-aware prediction.
- scripts/mp_game_flow_client.gd + run_game_multiplayer_test.sh: two real
clients each register -> join via the API -> game.tscn -> networked;
A sees B and moves. PASS.
Verified end to end against an orchestration-enabled backend. Non-networked
smokes green (enter_world 9/9, world_list 5/5, player 15/15,
avatar_in_world 10/10, main_menu_full_flow 12/12).
Co-Authored-By: Claude Sonnet 5 <noreply@anthropic.com>
Claude-Session: https://claude.ai/code/session_015jtxAiu5dAW4WxCNdGkrkJ
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