Let a game hand values to the parameters of a sound FX #311

A sound FX played the same every time: its numbers were settings of
the nodes. Now the Input declares parameters with a default, every
number of Gain, Pitch and EQ is an input they can feed, and a Play
sound hands in values for them.

- Input declares number parameters in the inspector, each with a
  Default (DeclaredPort.default, SetPortDefaultCommand). They are
  outputs of the Input. Input and Output count as terminals now, one
  of each per graph.
- Gain, Pitch and EQ take their numbers at inputs under the keys the
  settings had, so saved graphs sound as before without a migration.
  Each value is held to its range however it arrives.
- The compiler gives an FxPlan with the parameters still open.
  fxChainOf fills them in when a voice starts. The player still only
  sees an FxChain.
- New behavior node Sound FX parameters: names an FX and picks its
  parameters like a Variables node picks variables. Each picked one is
  a number input that starts at the FX's default. Its output has the
  new port type fxparams, which only fits Play sound's fx params.
- Play sound warns when the parameters name another FX than the one
  it plays. Names the FX does not know are left out.
- Renaming a parameter at the Input renames it in every Sound FX
  parameters node naming that FX, edges and values included.
- The Sound FX tab has a number field per parameter in its header.
  Play uses those values, they are never written into the asset.
- A value counts from the start of a voice. Changing a playing voice
  is #315, a Mix node is #316.

Tests:
- soundfx.test.ts 22 (+11): parameters in the plan, held values, a
  0-by-default stage, EQ band, save with defaults, wrong port types,
  default command with undo, Sound FX parameters into Play sound,
  defaults of picked ones, node problems, mismatch, rename with undo
- node-catalog 368 (+3): Play sound fx params, Sound FX parameters
- e2e 34: ALL PASSED - 28 checks (+2: header field plays depth 5,
  a Sound FX parameters node gives the game's voice depth 7)
- Gate on melektaus-atx: typecheck, lint, prettier clean, 240 test
  files, 3636 tests green
- Counter-check: with fxChainOf ignoring the values and the rename
  not followed, 5 of the new tests fail.
- Browser probe: header fields, inspector Default and the picked
  parameter looked at in two screenshots.

Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>

src/core/graph/NodeContext.ts

@@ -1,6 +1,7 @@
 import type { AnimationPlayer } from '../model/animation';
 import type { Mat } from '../model/matrix';
 import type { Position, PropertyBag } from '../model/Properties';
+import type { FxParams } from '../soundfx/nodes';
 import { type ChainTransform, composeAlongChain } from '../model/walk';
 import { enabledAlongChain } from '../properties/enabled';
 import { localMatrixOf, positionOf, transformOf } from '../properties/transform';
@@ -238,8 +239,16 @@ export interface NodeContext {
    * a sound is something a thing in the world is doing. `detached` gives that up on purpose, for
    * the one case where the rule is in the way: the death sound of an object that destroys itself.
    * `fx` names a sound FX asset the voice is played through (#311); `''` plays it as it is.
+   * `fxParams` are values for its parameters; one not given is the default the FX declares.
    */
-  playSound(assetId: string, volume: number, loop: boolean | undefined, detached: boolean, fx: string): void;
+  playSound(
+    assetId: string,
+    volume: number,
+    loop: boolean | undefined,
+    detached: boolean,
+    fx: string,
+    fxParams: FxParams,
+  ): void;
   /** Silences every voice of that sound; `''` silences everything this run started. */
   stopSound(assetId: string): void;
   /**