Own XM/MOD replayer, audio mixer with crossfades, synthesised chip sound effects, music director

- src/xm.rs: FastTracker 2 XM and ProTracker MOD replayer (verified against libopenmpt)
- src/audio.rs: music players with crossfade + effect voices, rendered on demand
- src/sfx.rs: 29 synthesised chip sound effects
- www/dc_plugin.js: AudioContext started on first input, streams samples from WASM
- music follows the game: title, rotating build tracks, battle, gate assault, jingles
- macroquad audio removed; all tests run natively with cargo test

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

Cargo.lock

@@ -14,24 +14,6 @@ version = "0.2.21"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "683d7910e743518b0e34f1186f92494becacb047c7b6bf616c96772180fef923"
 
-[[package]]
-name = "audir-sles"
-version = "0.1.0"
-source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "ea47348666a8edb7ad80cbee3940eb2bccf70df0e6ce09009abe1a836cb779f5"
-
-[[package]]
-name = "audrey"
-version = "0.3.0"
-source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "58b92a84e89497e3cd25d3672cd5d1c288abaac02c18ff21283f17d118b889b8"
-dependencies = [
- "dasp_frame",
- "dasp_sample",
- "hound",
- "lewton",
-]
-
 [[package]]
 name = "autocfg"
 version = "1.5.1"
@@ -86,21 +68,6 @@ dependencies = [
  "cfg-if",
 ]
 
-[[package]]
-name = "dasp_frame"
-version = "0.11.0"
-source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "b2a3937f5fe2135702897535c8d4a5553f8b116f76c1529088797f2eee7c5cd6"
-dependencies = [
- "dasp_sample",
-]
-
-[[package]]
-name = "dasp_sample"
-version = "0.11.0"
-source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "0c87e182de0887fd5361989c677c4e8f5000cd9491d6d563161a8f3a5519fc7f"
-
 [[package]]
 name = "dungeoncraft"
 version = "0.1.0"
@@ -169,12 +136,6 @@ dependencies = [
  "foldhash",
 ]
 
-[[package]]
-name = "hound"
-version = "3.5.1"
-source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "62adaabb884c94955b19907d60019f4e145d091c75345379e70d1ee696f7854f"
-
 [[package]]
 name = "image"
 version = "0.24.9"
@@ -194,17 +155,6 @@ version = "1.0.18"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "8f42a60cbdf9a97f5d2305f08a87dc4e09308d1276d28c869c684d7777685682"
 
-[[package]]
-name = "lewton"
-version = "0.9.4"
-source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "8d542c1a317036c45c2aa1cf10cc9d403ca91eb2d333ef1a4917e5cb10628bd0"
-dependencies = [
- "byteorder",
- "ogg",
- "smallvec",
-]
-
 [[package]]
 name = "libc"
 version = "0.2.191"
@@ -229,7 +179,6 @@ dependencies = [
  "macroquad_macro",
  "miniquad",
  "quad-rand",
- "quad-snd",
 ]
 
 [[package]]
@@ -247,12 +196,6 @@ dependencies = [
  "libc",
 ]
 
-[[package]]
-name = "maybe-uninit"
-version = "2.0.0"
-source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "60302e4db3a61da70c0cb7991976248362f30319e88850c487b9b95bbf059e00"
-
 [[package]]
 name = "memchr"
 version = "2.8.3"
@@ -315,15 +258,6 @@ dependencies = [
  "malloc_buf",
 ]
 
-[[package]]
-name = "ogg"
-version = "0.7.1"
-source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "13e571c3517af9e1729d4c63571a27edd660ade0667973bfc74a67c660c2b651"
-dependencies = [
- "byteorder",
-]
-
 [[package]]
 name = "png"
 version = "0.17.16"
@@ -346,34 +280,12 @@ dependencies = [
  "unicode-ident",
 ]
 
-[[package]]
-name = "quad-alsa-sys"
-version = "0.3.2"
-source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "c66c2f04a6946293477973d85adc251d502da51c57b08cd9c997f0cfd8dcd4b5"
-dependencies = [
- "libc",
-]
-
 [[package]]
 name = "quad-rand"
 version = "0.2.3"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "5a651516ddc9168ebd67b24afd085a718be02f8858fe406591b013d101ce2f40"
 
-[[package]]
-name = "quad-snd"
-version = "0.2.8"
-source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "cba0c4943fc67147fbe9d1eb731fb9e678bfc9d926507eebbbfe0103e154e5b0"
-dependencies = [
- "audir-sles",
- "audrey",
- "libc",
- "quad-alsa-sys",
- "winapi",
-]
-
 [[package]]
 name = "quote"
 version = "1.0.47"
@@ -432,15 +344,6 @@ version = "0.3.10"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "3a219298ac11a56ea9a6d2120044824d6f01aeb034955e7af7bc16858527deea"
 
-[[package]]
-name = "smallvec"
-version = "0.6.14"
-source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "b97fcaeba89edba30f044a10c6a3cc39df9c3f17d7cd829dd1446cab35f890e0"
-dependencies = [
- "maybe-uninit",
-]
-
 [[package]]
 name = "syn"
 version = "3.0.9"