[feat](trx-noaa): add NOAA APT satellite image decoder

New trx-noaa crate: FFT-based Hilbert transform (rustfft) for 2400 Hz
AM demodulation, sync A detection via cross-correlation, line assembly
at 4160 Hz, and JPEG output via the image crate.

- trx-core: NoaaImage type, DecodedMessage::NoaaImage variant,
  noaa_decode_enabled/noaa_decode_reset_seq on RigState/RigSnapshot,
  AUDIO_MSG_NOAA_IMAGE = 0x16
- trx-server: DecoderHistories::noaa, run_noaa_decoder task (activates
  on noaa_decode_enabled, auto-finalises after 30 s silence), saves
  JPEGs to ~/.cache/trx-rs/noaa/<YYYY-MM-DD_HH-MM-SS>.jpg, forwards
  events over TCP audio channel and history replay

Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>
Signed-off-by: Stan Grams <sjg@haxx.space>

Cargo.lock

@@ -435,6 +435,18 @@ version = "3.19.1"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "5dd9dc738b7a8311c7ade152424974d8115f2cdad61e8dab8dac9f2362298510"
 
+[[package]]
+name = "bytemuck"
+version = "1.25.0"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "c8efb64bd706a16a1bdde310ae86b351e4d21550d98d056f22f8a7f7a2183fec"
+
+[[package]]
+name = "byteorder"
+version = "1.5.0"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "1fd0f2584146f6f2ef48085050886acf353beff7305ebd1ae69500e27c67f64b"
+
 [[package]]
 name = "bytes"
 version = "1.11.0"
@@ -560,6 +572,12 @@ dependencies = [
  "cc",
 ]
 
+[[package]]
+name = "color_quant"
+version = "1.1.0"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "3d7b894f5411737b7867f4827955924d7c254fc9f4d91a6aad6b097804b1018b"
+
 [[package]]
 name = "colorchoice"
 version = "1.0.4"
@@ -1225,6 +1243,19 @@ dependencies = [
  "icu_properties",
 ]
 
+[[package]]
+name = "image"
+version = "0.24.9"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "5690139d2f55868e080017335e4b94cb7414274c74f1669c84fb5feba2c9f69d"
+dependencies = [
+ "bytemuck",
+ "byteorder",
+ "color_quant",
+ "jpeg-decoder",
+ "num-traits",
+]
+
 [[package]]
 name = "indexmap"
 version = "2.12.1"
@@ -1300,6 +1331,12 @@ dependencies = [
  "libc",
 ]
 
+[[package]]
+name = "jpeg-decoder"
+version = "0.3.2"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "00810f1d8b74be64b13dbf3db89ac67740615d6c891f0e7b6179326533011a07"
+
 [[package]]
 name = "js-sys"
 version = "0.3.85"
@@ -2747,6 +2784,16 @@ dependencies = [
  "rustfft",
 ]
 
+[[package]]
+name = "trx-noaa"
+version = "0.1.0"
+dependencies = [
+ "image",
+ "num-complex",
+ "rustfft",
+ "trx-core",
+]
+
 [[package]]
 name = "trx-protocol"
 version = "0.1.0"
@@ -2801,6 +2848,7 @@ dependencies = [
  "trx-cw",
  "trx-decode-log",
  "trx-ftx",
+ "trx-noaa",
  "trx-protocol",
  "trx-reporting",
  "trx-vdes",