chore: remove legacy deps (fnntw, rayon) and unused files

- Remove fnntw (KNN) and rayon dependencies, no longer needed with
  ensemble architecture
- Update burn features to include wgpu and train backends
- Remove dev.toml, models/.gitkeep, scripts/convert_csic.py, and
  pingora-headless.yaml (superseded by cluster gossip discovery)
- Add .DS_Store to .gitignore

Signed-off-by: Sienna Meridian Satterwhite <sienna@sunbeam.pt>

Cargo.lock

@@ -2,12 +2,6 @@
 # It is not intended for manual editing.
 version = 4
 
-[[package]]
-name = "Inflector"
-version = "0.11.4"
-source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "fe438c63458706e03479442743baae6c88256498e6431708f6dfc520a26515d3"
-
 [[package]]
 name = "addr2line"
 version = "0.25.1"
@@ -3187,23 +3181,6 @@ dependencies = [
  "rand_distr",
 ]
 
-[[package]]
-name = "fnntw"
-version = "0.4.1"
-source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "8466be0d69b615cc756992651fe2eb11bfbb2cbf945b21a7746844b8293cbfe8"
-dependencies = [
- "crossbeam-channel",
- "likely_stable",
- "num-format",
- "ordered-float 3.9.2",
- "ouroboros 0.15.6",
- "permutation",
- "rayon",
- "sync-unsafe-cell",
- "thiserror 1.0.69",
-]
-
 [[package]]
 name = "fnv"
 version = "1.0.7"
@@ -5076,15 +5053,6 @@ dependencies = [
  "libc",
 ]
 
-[[package]]
-name = "likely_stable"
-version = "0.1.3"
-source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "d61f7017d8abea1fc23ff7f01a8147b2656dea3aeb24d519aab6e2177eaf671c"
-dependencies = [
- "rustc_version",
-]
-
 [[package]]
 name = "linux-raw-sys"
 version = "0.4.15"
@@ -5796,16 +5764,6 @@ dependencies = [
  "syn 2.0.117",
 ]
 
-[[package]]
-name = "num-format"
-version = "0.4.4"
-source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "a652d9771a63711fd3c3deb670acfbe5c30a4072e664d7a3bf5a9e1056ac72c3"
-dependencies = [
- "arrayvec",
- "itoa",
-]
-
 [[package]]
 name = "num-integer"
 version = "0.1.46"
@@ -6140,16 +6098,6 @@ dependencies = [
  "num-traits",
 ]
 
-[[package]]
-name = "ouroboros"
-version = "0.15.6"
-source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "e1358bd1558bd2a083fed428ffeda486fbfb323e698cdda7794259d592ca72db"
-dependencies = [
- "aliasable",
- "ouroboros_macro 0.15.6",
-]
-
 [[package]]
 name = "ouroboros"
 version = "0.18.5"
@@ -6157,23 +6105,10 @@ source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "1e0f050db9c44b97a94723127e6be766ac5c340c48f2c4bb3ffa11713744be59"
 dependencies = [
  "aliasable",
- "ouroboros_macro 0.18.5",
+ "ouroboros_macro",
  "static_assertions",
 ]
 
-[[package]]
-name = "ouroboros_macro"
-version = "0.15.6"
-source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "5f7d21ccd03305a674437ee1248f3ab5d4b1db095cf1caf49f1713ddf61956b7"
-dependencies = [
- "Inflector",
- "proc-macro-error",
- "proc-macro2",
- "quote",
- "syn 1.0.109",
-]
-
 [[package]]
 name = "ouroboros_macro"
 version = "0.18.5"
@@ -6286,12 +6221,6 @@ version = "2.3.2"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "9b4f627cb1b25917193a259e49bdad08f671f8d9708acfd5fe0a8c1455d87220"
 
-[[package]]
-name = "permutation"
-version = "0.4.1"
-source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "df202b0b0f5b8e389955afd5f27b007b00fb948162953f1db9c70d2c7e3157d7"
-
 [[package]]
 name = "pest"
 version = "2.8.6"
@@ -6475,7 +6404,7 @@ dependencies = [
  "nix",
  "once_cell",
  "openssl-probe 0.1.6",
- "ouroboros 0.18.5",
+ "ouroboros",
  "parking_lot",
  "percent-encoding",
  "pingora-error",
@@ -6887,30 +6816,6 @@ dependencies = [
  "toml_edit 0.25.4+spec-1.1.0",
 ]
 
-[[package]]
-name = "proc-macro-error"
-version = "1.0.4"
-source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "da25490ff9892aab3fcf7c36f08cfb902dd3e71ca0f9f9517bea02a73a5ce38c"
-dependencies = [
- "proc-macro-error-attr",
- "proc-macro2",
- "quote",
- "syn 1.0.109",
- "version_check",
-]
-
-[[package]]
-name = "proc-macro-error-attr"
-version = "1.0.4"
-source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "a1be40180e52ecc98ad80b184934baf3d0d29f979574e439af5a55274b35f869"
-dependencies = [
- "proc-macro2",
- "quote",
- "version_check",
-]
-
 [[package]]
 name = "proc-macro-error-attr2"
 version = "2.0.0"
@@ -8463,7 +8368,6 @@ dependencies = [
  "criterion",
  "csv",
  "dns-lookup",
- "fnntw",
  "futures",
  "hex",
  "http",
@@ -8484,7 +8388,6 @@ dependencies = [
  "prometheus",
  "proptest",
  "rand 0.9.2",
- "rayon",
  "regex",
  "reqwest 0.12.28",
  "rustc-hash 2.1.1",
@@ -8522,12 +8425,6 @@ dependencies = [
  "unicode-ident",
 ]
 
-[[package]]
-name = "sync-unsafe-cell"
-version = "0.1.1"
-source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "8deaecba5382c095cb432cd1e21068dadb144208f057b13720e76bf89749beb4"
-
 [[package]]
 name = "sync_wrapper"
 version = "1.0.2"