refactor(ui): PR #134 review — MetaScreen/ESC chain tightening, D-192 reword

Addresses Tyre's 9 architecture items from the sprint-36 client review.

- decisions/architecture.md (Tyre #1): D-192 now says "deprecate; removal
  tracked in #868" instead of "remove". The branch does not remove the
  version field or guard — that belongs in the coordinated server+client
  PR. The decision text now matches the code on this branch.
- meta_stack.gd (#2): handle_escape() on a screen with
  closable_by_escape=false now consumes the event unconditionally. Was
  returning whatever on_escape() returned, which default-returned false
  and leaked ESC into main.gd's implant/settings chain — opening the
  settings dialog behind the loading screen.
- debug_console.gd (#4): drop the direct KEY_ESCAPE branch in
  _unhandled_input. ESC now falls through to main.gd → MetaStack, which
  finds the console on top of the stack and closes it via the normal
  path. Other keys are still consumed so movement/action can't leak.
- main.gd (#6, #10): extract the ESC priority chain into
  _handle_menu_key() so "MetaStack → implant → settings" is a named
  thing. Add a comment near connect_to_sim explaining that
  GameState.bookmark_catalog survives the Option A scene transition via
  the autoload.
- main_menu.gd (#7): header comment documenting the double LoadingScreen
  lifecycle — safe today because main_menu.tscn and main.tscn never
  co-exist, noted for future promotion to autoload if that changes.
- meta_screen.gd (#8): apply captures_input symmetrically in open()/
  close() — was set in open() only, so a screen changing the flag
  between open+close kept the opened value forever.
- meta_screen.gd (#9): on_escape() docstring clarifies the tri-state
  (consume-and-hold / consume-and-close / ignore) — and that
  closable_by_escape=false is the screen-wide way to say
  "consume-and-hold".
- bug_report_dialog.gd (#11): capture_cancelled now emits from
  on_close() (covers any close path — ESC, MetaStack pop, programmatic
  close) rather than only on_escape(). A new _completed flag
  distinguishes completion from cancel so the two signals stay
  mutually exclusive.

client/scripts/main.gd

@@ -49,6 +49,10 @@ func _ready() -> void:
 
 	# Connect to simulation (test mode sets CONNECTED immediately).
 	# Guard: Option A flow leaves SimBridge CONNECTED when main.tscn loads — don't drop it.
+	# Option A state handoff: main_menu polls and applies the snapshot first,
+	# seeding GameState (including bookmark_catalog) via the autoload before the
+	# scene swap. main.tscn then re-applies the next snapshot on top. Both paths
+	# write through GameState — which is autoloaded, so catalog state survives.
 	if SimBridge.state == SimBridge.ConnectionState.DISCONNECTED:
 		SimBridge.connect_to_sim()
 
@@ -267,19 +271,9 @@ func _process(delta: float) -> void:
 			elif err != OK:
 				push_error("main.gd: LOAD_GAME send_input failed: %s" % error_string(err))
 			continue
-		# #528: ESC/OPEN_MENU — priority chain: MetaStack modal → implant app → settings dialog
+		# #528: ESC/OPEN_MENU — delegate to ordered priority chain
 		if input.action == InputMapper.Action.OPEN_MENU:
-			if MetaStack.handle_escape():
-				continue
-			if HudGroups.is_implant_active():
-				HudGroups.close_app()
-				continue
-			if settings_dialog:
-				if settings_dialog.is_open():
-					settings_dialog.close()
-				else:
-					MetaStack.push(settings_dialog)
-					settings_dialog.open()
+			_handle_menu_key()
 			continue
 		if input.action == InputMapper.Action.INTERACT:
 			# D-057: prefer interaction list (multi-verb), fall back to prompt (v0.1)
@@ -314,6 +308,24 @@ func _process(delta: float) -> void:
 		_pending_record_inputs.clear()
 
 
+# #528: ESC/OPEN_MENU priority chain — first handler to consume wins.
+# Order matters: MetaStack modal > open implant app > settings dialog.
+# Adding a fourth handler: append a new step here; don't re-inline in _process.
+func _handle_menu_key() -> void:
+	if MetaStack.handle_escape():
+		return
+	if HudGroups.is_implant_active():
+		HudGroups.close_app()
+		return
+	if settings_dialog == null:
+		return
+	if settings_dialog.is_open():
+		settings_dialog.close()
+	else:
+		MetaStack.push(settings_dialog)
+		settings_dialog.open()
+
+
 # #496: Finalize gauntlet stats on disconnect
 func _on_connection_state_changed(
 	_old_state: SimBridge.ConnectionState, new_state: SimBridge.ConnectionState