perf(qrcode): 关闭默认 features，移除 image 依赖链

qrcode 默认启用了 image/svg/pic，但项目只使用 Unicode 终端渲染，
不需要图片编解码。关闭后移除 image 及其子依赖。

Cargo.lock

@@ -150,24 +150,12 @@ version = "3.20.3"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "72f5acc6cb2ba439de613abc23857ec3d78374d8ed5ac84e9d11336e87da8649"
 
-[[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 = "byteorder-lite"
-version = "0.1.0"
-source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "8f1fe948ff07f4bd06c30984e69f5b4899c516a3ef74f34df92a2df2ab535495"
-
 [[package]]
 name = "bytes"
 version = "1.11.1"
@@ -1084,18 +1072,6 @@ dependencies = [
  "icu_properties",
 ]
 
-[[package]]
-name = "image"
-version = "0.25.10"
-source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "85ab80394333c02fe689eaf900ab500fbd0c2213da414687ebf995a65d5a6104"
-dependencies = [
- "bytemuck",
- "byteorder-lite",
- "moxcms",
- "num-traits",
-]
-
 [[package]]
 name = "indexmap"
 version = "2.14.0"
@@ -1260,16 +1236,6 @@ dependencies = [
  "windows-sys 0.61.2",
 ]
 
-[[package]]
-name = "moxcms"
-version = "0.8.1"
-source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "bb85c154ba489f01b25c0d36ae69a87e4a1c73a72631fc6c0eb6dde34a73e44b"
-dependencies = [
- "num-traits",
- "pxfm",
-]
-
 [[package]]
 name = "new_debug_unreachable"
 version = "1.0.6"
@@ -1540,20 +1506,11 @@ dependencies = [
  "unicode-ident",
 ]
 
-[[package]]
-name = "pxfm"
-version = "0.1.29"
-source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "e0c5ccf5294c6ccd63a74f1565028353830a9c2f5eb0c682c355c471726a6e3f"
-
 [[package]]
 name = "qrcode"
 version = "0.14.1"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "d68782463e408eb1e668cf6152704bd856c78c5b6417adaee3203d8f4c1fc9ec"
-dependencies = [
- "image",
-]
 
 [[package]]
 name = "quinn"

Cargo.toml

@@ -31,7 +31,7 @@ tracing = "0.1"                                                # 结构化日志
 tracing-subscriber = { version = "0.3", features = ["env-filter"] }  # 日志输出
 tracing-appender = "0.2.5"                                     # 文件日志（日滚）
 # ── 二维码 ──
-qrcode = "0.14"                                                # 二维码生成
+qrcode = { version = "0.14", default-features = false }                              # 二维码生成（仅 Unicode 终端渲染）
 # ── 异步 trait ──
 async-trait = "0.1"                                            # 异步 trait 支持
 # ── 流式处理 ──