Full Xbox/PlayStation controller support: glyphs, remapping, vibration toggle

Extends the earlier Xbox-only ability glyphs into full brand-aware
controller support, following standard practice (position-based
button mapping, safe defaults for unrecognised pads, no per-device
special-casing):

- Controls detects PlayStation pads (DualShock/DualSense) from
  Input.get_joy_name() via a name-substring heuristic, checking for
  "xbox" first so a Bluetooth-connected Xbox pad (reports as "Xbox
  Wireless Controller") can't be misread as PlayStation through the
  generic "wireless controller" hint. Unrecognised/generic pads read
  as Xbox-style, matching the browser's Standard Gamepad Mapping.
- Ability-bar keycaps and the options menu now show ✕/○/□/△ for a
  detected PlayStation pad instead of A/B/X/Y — no index remapping
  needed, since PlayStation's face buttons sit in the exact same
  four positions as Xbox's.
- The options menu's Controls section gains a gamepad rebind button
  next to each ability's keyboard one (movement stays on the D-pad/
  stick, not individually remapped, matching convention). Clicking it
  captures the next joypad button press, mirroring the existing
  keyboard-rebind flow exactly (Esc cancels either). Gamepad rebinds
  persist to controls.cfg alongside keyboard ones and survive a
  reload.
- Added a player-facing "Controller Vibration" toggle (Settings...
  Gameplay section) — Controls.vibrate() now checks it alongside the
  existing DP debug flag, so either can silence rumble.

Verified headlessly end-to-end: default bindings show correct
brand-agnostic glyphs (kick=X, dash=A, ...), rebinding kick to a
different button through the real options-menu flow changes only
that action's glyph, leaves its keyboard binding and other abilities'
gamepad bindings untouched, and survives a reload from disk. Sanity-
checked the PlayStation name heuristic against realistic controller
name strings from Xbox, PlayStation (Windows/macOS/Bluetooth
variants), and other brands.

Co-Authored-By: Claude Sonnet 5 <noreply@anthropic.com>
Claude-Session: https://claude.ai/code/session_01MXBNaEBmrYDSMcv4NgUWtV

systems/config/settings.gd

@@ -12,6 +12,9 @@ const SECTION := "options"
 var screen_shake: bool = true
 ## Gore toggle — when off, no blood spawns (impact spurt + ongoing spear-wound bleed).
 var gore: bool = true
+## Controller rumble toggle — player-facing; Controls.vibrate() also respects the DP
+## "gamepad_vibration" debug flag, so either can silence it.
+var vibration: bool = true
 
 ## Audio volumes stored as linear 0–1. Applied to AudioServer buses on load/change.
 var volume_master:  float = 1.0
@@ -62,6 +65,14 @@ func set_gore(value: bool) -> void:
 	save()
 
 
+func set_vibration(value: bool) -> void:
+	if vibration == value:
+		return
+	vibration = value
+	changed.emit("vibration", value)
+	save()
+
+
 func set_volume_master(value: float) -> void:
 	volume_master = clampf(value, 0.0, 1.0)
 	AudioServer.set_bus_volume_db(AudioServer.get_bus_index("Master"), _vol_db(volume_master))
@@ -96,6 +107,7 @@ func save() -> void:
 	var cfg := ConfigFile.new()
 	cfg.set_value(SECTION, "screen_shake",   screen_shake)
 	cfg.set_value(SECTION, "gore",           gore)
+	cfg.set_value(SECTION, "vibration",      vibration)
 	cfg.set_value(SECTION, "volume_master",  volume_master)
 	cfg.set_value(SECTION, "volume_ambient", volume_ambient)
 	cfg.set_value(SECTION, "volume_effects", volume_effects)
@@ -110,6 +122,7 @@ func load_saved() -> void:
 		return
 	screen_shake   = cfg.get_value(SECTION, "screen_shake",   true)  as bool
 	gore           = cfg.get_value(SECTION, "gore",           true)  as bool
+	vibration      = cfg.get_value(SECTION, "vibration",      true)  as bool
 	volume_master  = cfg.get_value(SECTION, "volume_master",  1.0)   as float
 	volume_ambient = cfg.get_value(SECTION, "volume_ambient", 1.0)   as float
 	volume_effects = cfg.get_value(SECTION, "volume_effects", 1.0)   as float