feat(m4c): shell consumes an injected character (seed stays the F6 fallback)

client/scripts/ui/shell/main_window_shell.gd

@@ -19,6 +19,8 @@ extends Control
 const HttpTransport = preload("res://scripts/net/http_transport.gd")
 
 var service: DmService = null  # injection seam; real HttpTransport built if null
+var injected_log: CanonLog = null    # injection seam; _build_seed_log() if null (F6/standalone)
+var injected_state: GameState = null # injection seam; ShellState.seed() if null
 
 var _state: ShellState
 var _log: CanonLog
@@ -40,8 +42,10 @@ func _ready() -> void:
 	_fit_to_viewport()
 	get_viewport().size_changed.connect(_fit_to_viewport)
 
-	_state = ShellState.seed()
+	# The injected character wins; the seed calls are the F6/standalone fallback —
-	_log = _build_seed_log()
+	# same shape as `service == null` building a real transport below.
+	_state = ShellState.for_character(injected_state, injected_log) if injected_state != null else ShellState.seed()
+	_log = injected_log if injected_log != null else _build_seed_log()
 	_bind_state()
 
 	if service == null:

client/tests/unit/test_main_window_shell.gd

@@ -3,6 +3,8 @@ extends "res://addons/gut/test.gd"
 const SCENE := "res://scenes/shell/MainWindowShell.tscn"
 const FakeTransport = preload("res://tests/doubles/fake_transport.gd")
 const DmResponse = preload("res://scripts/net/dm_response.gd")
+const NewGame = preload("res://scripts/newgame/new_game.gd")
+const ContentDB = preload("res://scripts/content/content_db.gd")
 
 
 func _shell() -> MainWindowShell:
@@ -47,3 +49,36 @@ func test_shell_seed_player_has_a_real_race_and_calling():
 	assert_true(Races.exists(node._log.player.race_id), "seed race must be a real race")
 	assert_true(Callings.exists(node._log.player.calling_id), "seed calling must be a real calling")
 	assert_ne(node._log.player.luck_descriptor, "", "the descriptor must not be lost to an arg-slot shift")
+
+
+func _built_character():
+	var world = ContentDB.new()
+	world.load_from(ContentDB.default_content_root())
+	var origin = ContentDB.load_json(ContentDB.origin_path("deserter"))
+	var creation := {
+		"name": "Aldric", "race_id": "human", "calling_id": "sellsword",
+		"seed": 8675309, "spend": {},
+		"skills": ["athletics", "endurance"], "bonus_skill": "perception",
+	}
+	return NewGame.construct(origin, world, creation)
+
+
+func _shell_with_character(res) -> MainWindowShell:
+	var node = load(SCENE).instantiate()
+	var transport = FakeTransport.new()
+	transport.set_response(DmResponse.ok(200, {"prose": "Rain on the cobbles."}))
+	node.service = DmService.new(transport, FallbackLibrary.new())
+	node.injected_log = res["log"]
+	node.injected_state = res["state"]
+	add_child_autofree(node)
+	return node
+
+
+func test_shell_shows_the_injected_character_not_the_seed():
+	var res = _built_character()
+	assert_true(res["ok"], str(res["errors"]))
+	var node := _shell_with_character(res)
+	assert_same(node._log, res["log"], "the injected canon log drives narration")
+	var expected := "HP %d / %d" % [res["state"].sheet.hp, res["state"].sheet.max_hp()]
+	assert_eq(node._hp.text, expected, "HP label derives from the real sheet")
+	assert_ne(node._hp.text, "HP 42 / 60", "NOT the seed's Vexcca vitals")