refactor: 合并为单 crate，前端改为内嵌 React 控制台

合并 stash-cli / stash-core 为根目录单 crate（lib + bin），新增 React + Vite + TS 控制台替换 Askama 模板。
build.rs 用 walkdir 把 stash-web/dist 同步到 $OUT_DIR/web，由 include_dir! 编译期内嵌，产出单文件二进制。
路由改为 / 与 /assets/** 走内嵌前端，其余交给 ServeDir，缺失路径返回内置 404。同步更新依赖、.gitignore 与 README。

Cargo.lock

@@ -67,48 +67,6 @@ version = "1.0.104"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "330a5ed07fa54e4702c9d6c4174f74427fc0ef6e214bbd677ae50a5099946470"
 
-[[package]]
-name = "askama"
-version = "0.14.0"
-source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "f75363874b771be265f4ffe307ca705ef6f3baa19011c149da8674a87f1b75c4"
-dependencies = [
- "askama_derive",
- "itoa",
- "percent-encoding",
- "serde",
- "serde_json",
-]
-
-[[package]]
-name = "askama_derive"
-version = "0.14.0"
-source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "129397200fe83088e8a68407a8e2b1f826cf0086b21ccdb866a722c8bcd3a94f"
-dependencies = [
- "askama_parser",
- "basic-toml",
- "memchr",
- "proc-macro2",
- "quote",
- "rustc-hash",
- "serde",
- "serde_derive",
- "syn 2.0.119",
-]
-
-[[package]]
-name = "askama_parser"
-version = "0.14.0"
-source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "d6ab5630b3d5eaf232620167977f95eb51f3432fc76852328774afbd242d4358"
-dependencies = [
- "memchr",
- "serde",
- "serde_derive",
- "winnow",
-]
-
 [[package]]
 name = "async-stream"
 version = "0.3.6"
@@ -189,15 +147,6 @@ dependencies = [
  "tracing",
 ]
 
-[[package]]
-name = "basic-toml"
-version = "0.1.10"
-source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "ba62675e8242a4c4e806d12f11d136e626e6c8361d6b829310732241652a178a"
-dependencies = [
- "serde",
-]
-
 [[package]]
 name = "bitflags"
 version = "2.13.2"
@@ -420,6 +369,25 @@ dependencies = [
  "tower-service",
 ]
 
+[[package]]
+name = "include_dir"
+version = "0.7.4"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "923d117408f1e49d914f1a379a309cffe4f18c05cf4e3d12e613a15fc81bd0dd"
+dependencies = [
+ "include_dir_macros",
+]
+
+[[package]]
+name = "include_dir_macros"
+version = "0.7.4"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "7cab85a7ed0bd5f0e76d93846e0147172bed2e2d3f859bcc33a8d9699cad1a75"
+dependencies = [
+ "proc-macro2",
+ "quote",
+]
+
 [[package]]
 name = "inotify"
 version = "0.11.5"
@@ -480,9 +448,9 @@ checksum = "20870f649af7073d53e38067b2a84312175d56ea15217e1b15bc83506ec50afb"
 
 [[package]]
 name = "libc"
-version = "0.2.190"
+version = "0.2.191"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "ce5d3ddc6d3fa000eb1536d85e147bfe31aacaba692ed6a876f95cb7c855be78"
+checksum = "65cd87c9a6d60536580b316ad985726104730a5151c99845f2490428ef91240a"
 
 [[package]]
 name = "lock_api"
@@ -695,12 +663,6 @@ version = "0.8.11"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "d6f6ff9a378485b298a5286656da665ba74413d36db0979633275d2e708145d4"
 
-[[package]]
-name = "rustc-hash"
-version = "2.1.3"
-source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "6b1e7f9a428571be2dc5bc0505c13fb6bf936822b894ec87abf8a08a4e51742d"
-
 [[package]]
 name = "ryu"
 version = "1.0.23"
@@ -830,26 +792,15 @@ dependencies = [
 ]
 
 [[package]]
-name = "stash-cli"
+name = "stash"
 version = "0.1.0"
 dependencies = [
  "anyhow",
- "clap",
- "colored",
- "stash-core",
- "tokio",
- "tracing",
- "tracing-subscriber",
-]
-
-[[package]]
-name = "stash-core"
-version = "0.1.0"
-dependencies = [
- "anyhow",
- "askama",
  "async-stream",
  "axum",
+ "clap",
+ "colored",
+ "include_dir",
  "mime_guess",
  "notify",
  "serde",
@@ -859,6 +810,7 @@ dependencies = [
  "tower 0.4.13",
  "tower-http",
  "tracing",
+ "tracing-subscriber",
  "walkdir",
 ]
 
@@ -898,22 +850,22 @@ checksum = "0bf256ce5efdfa370213c1dabab5935a12e49f2c58d15e9eac2870d3b4f27263"
 
 [[package]]
 name = "thiserror"
-version = "1.0.69"
+version = "2.0.21"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "b6aaf5339b578ea85b50e080feb250a3e8ae8cfcdff9a461c9ec2904bc923f52"
+checksum = "09e52cb86a36cede5cb101bf8908837b3e4c6e5e59fe7fd85c23fb56200d189e"
 dependencies = [
  "thiserror-impl",
 ]
 
 [[package]]
 name = "thiserror-impl"
-version = "1.0.69"
+version = "2.0.21"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "4fee6c4efc90059e10f81e6d42c60a18f76588c3d74cb83a0b242a2b6c7504c1"
+checksum = "fe5197923287db20a58125f0bc85c062f7f2c892de97b18c356f9efb14b28524"
 dependencies = [
  "proc-macro2",
  "quote",
- "syn 2.0.119",
+ "syn 3.0.9",
 ]
 
 [[package]]
@@ -927,9 +879,9 @@ dependencies = [
 
 [[package]]
 name = "tokio"
-version = "1.53.3"
+version = "1.54.0"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "ce3335fa71841cda333a58d7615b03901380ecf09d59b3296d21f8bbac0dde4e"
+checksum = "a0c168a474b95bfecfe908a65d4bdffc523144b649a74c09c286afb35d53e0bc"
 dependencies = [
  "bytes",
  "libc",
@@ -1235,15 +1187,6 @@ version = "0.53.1"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "d6bbff5f0aada427a1e5a6da5f1f98158182f26556f345ac9e04d36d0ebed650"
 
-[[package]]
-name = "winnow"
-version = "0.7.15"
-source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "df79d97927682d2fd8adb29682d1140b343be4ac0f08fd68b7765d9c059d3945"
-dependencies = [
- "memchr",
-]
-
 [[package]]
 name = "zmij"
 version = "1.0.23"