Add favicon and update navigation icons across documentation

- Added a favicon link to all tour pages in the Japanese documentation.
- Updated navigation links to include SVG icons for Home and GitHub.
- Changed language button to include an SVG icon for better visual representation.
- Improved theme toggle button to use SVG icons for light and dark modes.
- Refactored the documentation build commands in the justfile for clarity and consistency.

.gitignore

@@ -55,7 +55,6 @@ test/*.pem
 test/*.srl
 test/*.log
 test/_build_*
-test/cpp-httplib/
 work/
 benchmark/server*
 docs-gen/target/

docs-gen/Cargo.lock

@@ -62,7 +62,7 @@ version = "1.1.5"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "40c48f72fd53cd289104fc64099abca73db4166ad86ea0b4341abe65af83dadc"
 dependencies = [
- "windows-sys",
+ "windows-sys 0.61.2",
 ]
 
 [[package]]
@@ -73,7 +73,7 @@ checksum = "291e6a250ff86cd4a820112fb8898808a366d8f9f58ce16d1f538353ad55747d"
 dependencies = [
  "anstyle",
  "once_cell_polyfill",
- "windows-sys",
+ "windows-sys 0.61.2",
 ]
 
 [[package]]
@@ -82,6 +82,12 @@ version = "1.0.102"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "7f202df86484c868dbad7eaa557ef785d5c66295e41b460ef922eca0723b842c"
 
+[[package]]
+name = "ascii"
+version = "1.1.0"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "d92bec98840b8f03a5ff5413de5293bfcd8bf96467cf5452609f939ec6f5de16"
+
 [[package]]
 name = "autocfg"
 version = "1.5.0"
@@ -103,6 +109,12 @@ dependencies = [
  "serde",
 ]
 
+[[package]]
+name = "bitflags"
+version = "1.3.2"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "bef38d45163c2f1dde094a7dfd33ccf595c92905c8f8f4fdc18d06fb1037718a"
+
 [[package]]
 name = "bitflags"
 version = "2.11.0"
@@ -134,6 +146,18 @@ version = "3.20.2"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "5d20789868f4b01b2f2caec9f5c4e0213b41e3e5702a50157d699ae31ced2fcb"
 
+[[package]]
+name = "byteorder"
+version = "1.5.0"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "1fd0f2584146f6f2ef48085050886acf353beff7305ebd1ae69500e27c67f64b"
+
+[[package]]
+name = "bytes"
+version = "1.11.1"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "1e748733b7cbc798e1434b6ac524f0c1ff2ab456fe201501e6497c8417a4fc33"
+
 [[package]]
 name = "cc"
 version = "1.2.56"
@@ -183,6 +207,12 @@ dependencies = [
  "phf_codegen",
 ]
 
+[[package]]
+name = "chunked_transfer"
+version = "1.5.0"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "6e4de3bc4ea267985becf712dc6d9eed8b04c953b3fcfb339ebc87acd9804901"
+
 [[package]]
 name = "clap"
 version = "4.5.60"
@@ -288,6 +318,12 @@ dependencies = [
  "typenum",
 ]
 
+[[package]]
+name = "data-encoding"
+version = "2.10.0"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "d7a1e2f27636f116493b8b860f5546edb47c8d8f8ea73e1d2a20be88e28d1fea"
+
 [[package]]
 name = "deranged"
 version = "0.5.8"
@@ -319,13 +355,19 @@ version = "0.1.0"
 dependencies = [
  "anyhow",
  "clap",
+ "notify",
+ "open",
  "pulldown-cmark",
  "serde",
  "serde_json",
  "serde_yml",
+ "socket2",
  "syntect",
+ "tempfile",
  "tera",
+ "tiny_http",
  "toml",
+ "tungstenite",
  "walkdir",
 ]
 
@@ -335,6 +377,33 @@ version = "1.0.2"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "877a4ace8713b0bcf2a4e7eec82529c029f1d0619886d18145fea96c3ffe5c0f"
 
+[[package]]
+name = "errno"
+version = "0.3.14"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "39cab71617ae0d63f51a36d69f866391735b51691dbda63cf6f96d042b63efeb"
+dependencies = [
+ "libc",
+ "windows-sys 0.61.2",
+]
+
+[[package]]
+name = "fastrand"
+version = "2.3.0"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "37909eebbb50d72f9059c3b6d82c0463f2ff062c9e95845c43a6c9c0355411be"
+
+[[package]]
+name = "filetime"
+version = "0.2.27"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "f98844151eee8917efc50bd9e8318cb963ae8b297431495d3f758616ea5c57db"
+dependencies = [
+ "cfg-if",
+ "libc",
+ "libredox",
+]
+
 [[package]]
 name = "find-msvc-tools"
 version = "0.1.9"
@@ -357,6 +426,21 @@ version = "1.0.7"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "3f9eec918d3f24069decb9af1554cad7c880e2da24a9afd88aca000531ab82c1"
 
+[[package]]
+name = "foldhash"
+version = "0.1.5"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "d9c4f5dac5e15c24eb999c26181a6ca40b39fe946cbe4c263c7209467bc83af2"
+
+[[package]]
+name = "fsevent-sys"
+version = "4.1.0"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "76ee7a02da4d231650c7cea31349b889be2f45ddb3ef3032d2ec8185f6313fd2"
+dependencies = [
+ "libc",
+]
+
 [[package]]
 name = "generic-array"
 version = "0.14.7"
@@ -387,6 +471,19 @@ dependencies = [
  "wasi",
 ]
 
+[[package]]
+name = "getrandom"
+version = "0.4.1"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "139ef39800118c7683f2fd3c98c1b23c09ae076556b435f8e9064ae108aaeeec"
+dependencies = [
+ "cfg-if",
+ "libc",
+ "r-efi",
+ "wasip2",
+ "wasip3",
+]
+
 [[package]]
 name = "globset"
 version = "0.4.18"
@@ -406,11 +503,20 @@ version = "0.9.1"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "0bf760ebf69878d9fd8f110c89703d90ce35095324d1f1edcb595c63945ee757"
 dependencies = [
- "bitflags",
+ "bitflags 2.11.0",
  "ignore",
  "walkdir",
 ]
 
+[[package]]
+name = "hashbrown"
+version = "0.15.5"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "9229cfe53dfd69f0609a49f65461bd93001ea1ef889cd5529dd176593f5338a1"
+dependencies = [
+ "foldhash",
+]
+
 [[package]]
 name = "hashbrown"
 version = "0.16.1"
@@ -423,6 +529,28 @@ version = "0.5.0"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "2304e00983f87ffb38b55b444b5e3b60a884b5d30c0fca7d82fe33449bbe55ea"
 
+[[package]]
+name = "http"
+version = "1.4.0"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "e3ba2a386d7f85a81f119ad7498ebe444d2e22c2af0b86b069416ace48b3311a"
+dependencies = [
+ "bytes",
+ "itoa",
+]
+
+[[package]]
+name = "httparse"
+version = "1.10.1"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "6dbf3de79e51f3d586ab4cb9d5c3e2c14aa28ed23d180cf89b4df0454a69cc87"
+
+[[package]]
+name = "httpdate"
+version = "1.0.3"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "df3b46402a9d5adb4c86a0cf463f42e19994e3ee891101b1841f30a545cb49a9"
+
 [[package]]
 name = "humansize"
 version = "2.1.3"
@@ -456,6 +584,12 @@ dependencies = [
  "cc",
 ]
 
+[[package]]
+name = "id-arena"
+version = "2.3.0"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "3d3067d79b975e8844ca9eb072e16b31c3c1c36928edf9c6789548c524d0d954"
+
 [[package]]
 name = "ignore"
 version = "0.4.25"
@@ -479,7 +613,57 @@ source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "7714e70437a7dc3ac8eb7e6f8df75fd8eb422675fc7678aff7364301092b1017"
 dependencies = [
  "equivalent",
- "hashbrown",
+ "hashbrown 0.16.1",
+ "serde",
+ "serde_core",
+]
+
+[[package]]
+name = "inotify"
+version = "0.10.2"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "fdd168d97690d0b8c412d6b6c10360277f4d7ee495c5d0d5d5fe0854923255cc"
+dependencies = [
+ "bitflags 1.3.2",
+ "inotify-sys",
+ "libc",
+]
+
+[[package]]
+name = "inotify-sys"
+version = "0.1.5"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "e05c02b5e89bff3b946cedeca278abc628fe811e604f027c45a8aa3cf793d0eb"
+dependencies = [
+ "libc",
+]
+
+[[package]]
+name = "instant"
+version = "0.1.13"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "e0242819d153cba4b4b05a5a8f2a7e9bbf97b6055b2a002b395c96b5ff3c0222"
+dependencies = [
+ "cfg-if",
+]
+
+[[package]]
+name = "is-docker"
+version = "0.2.0"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "928bae27f42bc99b60d9ac7334e3a21d10ad8f1835a4e12ec3ec0464765ed1b3"
+dependencies = [
+ "once_cell",
+]
+
+[[package]]
+name = "is-wsl"
+version = "0.4.0"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "173609498df190136aa7dea1a91db051746d339e18476eed5ca40521f02d7aa5"
+dependencies = [
+ "is-docker",
+ "once_cell",
 ]
 
 [[package]]
@@ -504,12 +688,38 @@ dependencies = [
  "wasm-bindgen",
 ]
 
+[[package]]
+name = "kqueue"
+version = "1.1.1"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "eac30106d7dce88daf4a3fcb4879ea939476d5074a9b7ddd0fb97fa4bed5596a"
+dependencies = [
+ "kqueue-sys",
+ "libc",
+]
+
+[[package]]
+name = "kqueue-sys"
+version = "1.0.4"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "ed9625ffda8729b85e45cf04090035ac368927b8cebc34898e7c120f52e4838b"
+dependencies = [
+ "bitflags 1.3.2",
+ "libc",
+]
+
 [[package]]
 name = "lazy_static"
 version = "1.5.0"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "bbd2bcb4c963f2ddae06a2efc7e9f3591312473c50c6685e1f298068316e66fe"
 
+[[package]]
+name = "leb128fmt"
+version = "0.1.0"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "09edd9e8b54e49e587e4f6295a7d29c3ea94d469cb40ab8ca70b288248a81db2"
+
 [[package]]
 name = "libc"
 version = "0.2.182"
@@ -522,6 +732,18 @@ version = "0.2.16"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "b6d2cec3eae94f9f509c767b45932f1ada8350c4bdb85af2fcab4a3c14807981"
 
+[[package]]
+name = "libredox"
+version = "0.1.14"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "1744e39d1d6a9948f4f388969627434e31128196de472883b39f148769bfe30a"
+dependencies = [
+ "bitflags 2.11.0",
+ "libc",
+ "plain",
+ "redox_syscall",
+]
+
 [[package]]
 name = "libyml"
 version = "0.0.5"
@@ -538,6 +760,12 @@ version = "0.5.6"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "0717cef1bc8b636c6e1c1bbdefc09e6322da8a9321966e8928ef80d20f7f770f"
 
+[[package]]
+name = "linux-raw-sys"
+version = "0.12.1"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "32a66949e030da00e8c7d4434b251670a91556f4144941d37452769c25d58a53"
+
 [[package]]
 name = "log"
 version = "0.4.29"
@@ -560,6 +788,46 @@ dependencies = [
  "simd-adler32",
 ]
 
+[[package]]
+name = "mio"
+version = "1.1.1"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "a69bcab0ad47271a0234d9422b131806bf3968021e5dc9328caf2d4cd58557fc"
+dependencies = [
+ "libc",
+ "log",
+ "wasi",
+ "windows-sys 0.61.2",
+]
+
+[[package]]
+name = "notify"
+version = "7.0.0"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "c533b4c39709f9ba5005d8002048266593c1cfaf3c5f0739d5b8ab0c6c504009"
+dependencies = [
+ "bitflags 2.11.0",
+ "filetime",
+ "fsevent-sys",
+ "inotify",
+ "kqueue",
+ "libc",
+ "log",
+ "mio",
+ "notify-types",
+ "walkdir",
+ "windows-sys 0.52.0",
+]
+
+[[package]]
+name = "notify-types"
+version = "1.0.1"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "585d3cb5e12e01aed9e8a1f70d5c6b5e86fe2a6e48fc8cd0b3e0b8df6f6eb174"
+dependencies = [
+ "instant",
+]
+
 [[package]]
 name = "num-conv"
 version = "0.2.0"
@@ -593,7 +861,7 @@ version = "6.5.1"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "336b9c63443aceef14bea841b899035ae3abe89b7c486aaf4c5bd8aafedac3f0"
 dependencies = [
- "bitflags",
+ "bitflags 2.11.0",
  "libc",
  "once_cell",
  "onig_sys",
@@ -609,6 +877,17 @@ dependencies = [
  "pkg-config",
 ]
 
+[[package]]
+name = "open"
+version = "5.3.3"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "43bb73a7fa3799b198970490a51174027ba0d4ec504b03cd08caf513d40024bc"
+dependencies = [
+ "is-wsl",
+ "libc",
+ "pathdiff",
+]
+
 [[package]]
 name = "parse-zoneinfo"
 version = "0.3.1"
@@ -618,6 +897,12 @@ dependencies = [
  "regex",
 ]
 
+[[package]]
+name = "pathdiff"
+version = "0.2.3"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "df94ce210e5bc13cb6651479fa48d14f601d9858cfe0467f43ae157023b938d3"
+
 [[package]]
 name = "percent-encoding"
 version = "2.3.2"
@@ -711,6 +996,12 @@ version = "0.3.32"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "7edddbd0b52d732b21ad9a5fab5c704c14cd949e5e9a1ec5929a24fded1b904c"
 
+[[package]]
+name = "plain"
+version = "0.2.3"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "b4596b6d070b27117e987119b4dac604f3c58cfb0b191112e24771b2faeac1a6"
+
 [[package]]
 name = "plist"
 version = "1.8.0"
@@ -739,6 +1030,16 @@ dependencies = [
  "zerocopy",
 ]
 
+[[package]]
+name = "prettyplease"
+version = "0.2.37"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "479ca8adacdd7ce8f1fb39ce9ecccbfe93a3f1344b3d0d97f20bc0196208f62b"
+dependencies = [
+ "proc-macro2",
+ "syn",
+]
+
 [[package]]
 name = "proc-macro2"
 version = "1.0.106"
@@ -754,7 +1055,7 @@ version = "0.12.2"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "f86ba2052aebccc42cbbb3ed234b8b13ce76f75c3551a303cb2bcffcff12bb14"
 dependencies = [
- "bitflags",
+ "bitflags 2.11.0",
  "getopts",
  "memchr",
  "pulldown-cmark-escape",
@@ -785,6 +1086,12 @@ dependencies = [
  "proc-macro2",
 ]
 
+[[package]]
+name = "r-efi"
+version = "5.3.0"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "69cdb34c158ceb288df11e18b4bd39de994f6657d83847bdffdbd7f346754b0f"
+
 [[package]]
 name = "rand"
 version = "0.8.5"
@@ -812,7 +1119,16 @@ version = "0.6.4"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "ec0be4795e2f6a28069bec0b5ff3e2ac9bafc99e6a9a7dc3547996c5c816922c"
 dependencies = [
- "getrandom",
+ "getrandom 0.2.17",
+]
+
+[[package]]
+name = "redox_syscall"
+version = "0.7.3"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "6ce70a74e890531977d37e532c34d45e9055d2409ed08ddba14529471ed0be16"
+dependencies = [
+ "bitflags 2.11.0",
 ]
 
 [[package]]
@@ -844,6 +1160,19 @@ version = "0.8.10"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "dc897dd8d9e8bd1ed8cdad82b5966c3e0ecae09fb1907d58efaa013543185d0a"
 
+[[package]]
+name = "rustix"
+version = "1.1.4"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "b6fe4565b9518b83ef4f91bb47ce29620ca828bd32cb7e408f0062e9930ba190"
+dependencies = [
+ "bitflags 2.11.0",
+ "errno",
+ "libc",
+ "linux-raw-sys",
+ "windows-sys 0.61.2",
+]
+
 [[package]]
 name = "rustversion"
 version = "1.0.22"
@@ -865,6 +1194,12 @@ dependencies = [
  "winapi-util",
 ]
 
+[[package]]
+name = "semver"
+version = "1.0.27"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "d767eb0aabc880b29956c35734170f26ed551a859dbd361d140cdbeca61ab1e2"
+
 [[package]]
 name = "serde"
 version = "1.0.228"
@@ -932,6 +1267,17 @@ dependencies = [
  "version_check",
 ]
 
+[[package]]
+name = "sha1"
+version = "0.10.6"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "e3bf829a2d51ab4a5ddf1352d8470c140cadc8301b2ae1789db023f01cedd6ba"
+dependencies = [
+ "cfg-if",
+ "cpufeatures",
+ "digest",
+]
+
 [[package]]
 name = "sha2"
 version = "0.10.9"
@@ -971,6 +1317,16 @@ dependencies = [
  "wasm-bindgen",
 ]
 
+[[package]]
+name = "socket2"
+version = "0.5.10"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "e22376abed350d73dd1cd119b57ffccad95b4e585a7cda43e286245ce23c0678"
+dependencies = [
+ "libc",
+ "windows-sys 0.52.0",
+]
+
 [[package]]
 name = "strsim"
 version = "0.11.1"
@@ -1004,11 +1360,24 @@ dependencies = [
  "serde",
  "serde_derive",
  "serde_json",
- "thiserror",
+ "thiserror 2.0.18",
  "walkdir",
  "yaml-rust",
 ]
 
+[[package]]
+name = "tempfile"
+version = "3.26.0"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "82a72c767771b47409d2345987fda8628641887d5466101319899796367354a0"
+dependencies = [
+ "fastrand",
+ "getrandom 0.4.1",
+ "once_cell",
+ "rustix",
+ "windows-sys 0.61.2",
+]
+
 [[package]]
 name = "tera"
 version = "1.20.1"
@@ -1031,13 +1400,33 @@ dependencies = [
  "unicode-segmentation",
 ]
 
+[[package]]
+name = "thiserror"
+version = "1.0.69"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "b6aaf5339b578ea85b50e080feb250a3e8ae8cfcdff9a461c9ec2904bc923f52"
+dependencies = [
+ "thiserror-impl 1.0.69",
+]
+
 [[package]]
 name = "thiserror"
 version = "2.0.18"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "4288b5bcbc7920c07a1149a35cf9590a2aa808e0bc1eafaade0b80947865fbc4"
 dependencies = [
- "thiserror-impl",
+ "thiserror-impl 2.0.18",
+]
+
+[[package]]
+name = "thiserror-impl"
+version = "1.0.69"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "4fee6c4efc90059e10f81e6d42c60a18f76588c3d74cb83a0b242a2b6c7504c1"
+dependencies = [
+ "proc-macro2",
+ "quote",
+ "syn",
 ]
 
 [[package]]
@@ -1082,6 +1471,18 @@ dependencies = [
  "time-core",
 ]
 
+[[package]]
+name = "tiny_http"
+version = "0.12.0"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "389915df6413a2e74fb181895f933386023c71110878cd0825588928e64cdc82"
+dependencies = [
+ "ascii",
+ "chunked_transfer",
+ "httpdate",
+ "log",
+]
+
 [[package]]
 name = "toml"
 version = "0.8.23"
@@ -1123,6 +1524,24 @@ version = "0.1.2"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "5d99f8c9a7727884afe522e9bd5edbfc91a3312b36a77b5fb8926e4c31a41801"
 
+[[package]]
+name = "tungstenite"
+version = "0.24.0"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "18e5b8366ee7a95b16d32197d0b2604b43a0be89dc5fac9f8e96ccafbaedda8a"
+dependencies = [
+ "byteorder",
+ "bytes",
+ "data-encoding",
+ "http",
+ "httparse",
+ "log",
+ "rand",
+ "sha1",
+ "thiserror 1.0.69",
+ "utf-8",
+]
+
 [[package]]
 name = "typenum"
 version = "1.19.0"
@@ -1159,6 +1578,18 @@ version = "0.2.2"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "b4ac048d71ede7ee76d585517add45da530660ef4390e49b098733c6e897f254"
 
+[[package]]
+name = "unicode-xid"
+version = "0.2.6"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "ebc1c04c71510c7f702b52b7c350734c9ff1295c464a03335b00bb84fc54f853"
+
+[[package]]
+name = "utf-8"
+version = "0.7.6"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "09cc8ee72d2a9becf2f2febe0205bbed8fc6615b7cb429ad062dc7b7ddd036a9"
+
 [[package]]
 name = "utf8parse"
 version = "0.2.2"
@@ -1187,6 +1618,24 @@ version = "0.11.1+wasi-snapshot-preview1"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "ccf3ec651a847eb01de73ccad15eb7d99f80485de043efb2f370cd654f4ea44b"
 
+[[package]]
+name = "wasip2"
+version = "1.0.2+wasi-0.2.9"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "9517f9239f02c069db75e65f174b3da828fe5f5b945c4dd26bd25d89c03ebcf5"
+dependencies = [
+ "wit-bindgen",
+]
+
+[[package]]
+name = "wasip3"
+version = "0.4.0+wasi-0.3.0-rc-2026-01-06"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "5428f8bf88ea5ddc08faddef2ac4a67e390b88186c703ce6dbd955e1c145aca5"
+dependencies = [
+ "wit-bindgen",
+]
+
 [[package]]
 name = "wasm-bindgen"
 version = "0.2.114"
@@ -1232,13 +1681,47 @@ dependencies = [
  "unicode-ident",
 ]
 
+[[package]]
+name = "wasm-encoder"
+version = "0.244.0"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "990065f2fe63003fe337b932cfb5e3b80e0b4d0f5ff650e6985b1048f62c8319"
+dependencies = [
+ "leb128fmt",
+ "wasmparser",
+]
+
+[[package]]
+name = "wasm-metadata"
+version = "0.244.0"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "bb0e353e6a2fbdc176932bbaab493762eb1255a7900fe0fea1a2f96c296cc909"
+dependencies = [
+ "anyhow",
+ "indexmap",
+ "wasm-encoder",
+ "wasmparser",
+]
+
+[[package]]
+name = "wasmparser"
+version = "0.244.0"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "47b807c72e1bac69382b3a6fb3dbe8ea4c0ed87ff5629b8685ae6b9a611028fe"
+dependencies = [
+ "bitflags 2.11.0",
+ "hashbrown 0.15.5",
+ "indexmap",
+ "semver",
+]
+
 [[package]]
 name = "winapi-util"
 version = "0.1.11"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "c2a7b1c03c876122aa43f3020e6c3c3ee5c05081c9a00739faf7503aeba10d22"
 dependencies = [
- "windows-sys",
+ "windows-sys 0.61.2",
 ]
 
 [[package]]
@@ -1300,6 +1783,15 @@ dependencies = [
  "windows-link",
 ]
 
+[[package]]
+name = "windows-sys"
+version = "0.52.0"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "282be5f36a8ce781fad8c8ae18fa3f9beff57ec1b52cb3de0789201425d9a33d"
+dependencies = [
+ "windows-targets",
+]
+
 [[package]]
 name = "windows-sys"
 version = "0.61.2"
@@ -1309,6 +1801,70 @@ dependencies = [
  "windows-link",
 ]
 
+[[package]]
+name = "windows-targets"
+version = "0.52.6"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "9b724f72796e036ab90c1021d4780d4d3d648aca59e491e6b98e725b84e99973"
+dependencies = [
+ "windows_aarch64_gnullvm",
+ "windows_aarch64_msvc",
+ "windows_i686_gnu",
+ "windows_i686_gnullvm",
+ "windows_i686_msvc",
+ "windows_x86_64_gnu",
+ "windows_x86_64_gnullvm",
+ "windows_x86_64_msvc",
+]
+
+[[package]]
+name = "windows_aarch64_gnullvm"
+version = "0.52.6"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "32a4622180e7a0ec044bb555404c800bc9fd9ec262ec147edd5989ccd0c02cd3"
+
+[[package]]
+name = "windows_aarch64_msvc"
+version = "0.52.6"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "09ec2a7bb152e2252b53fa7803150007879548bc709c039df7627cabbd05d469"
+
+[[package]]
+name = "windows_i686_gnu"
+version = "0.52.6"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "8e9b5ad5ab802e97eb8e295ac6720e509ee4c243f69d781394014ebfe8bbfa0b"
+
+[[package]]
+name = "windows_i686_gnullvm"
+version = "0.52.6"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "0eee52d38c090b3caa76c563b86c3a4bd71ef1a819287c19d586d7334ae8ed66"
+
+[[package]]
+name = "windows_i686_msvc"
+version = "0.52.6"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "240948bc05c5e7c6dabba28bf89d89ffce3e303022809e73deaefe4f6ec56c66"
+
+[[package]]
+name = "windows_x86_64_gnu"
+version = "0.52.6"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "147a5c80aabfbf0c7d901cb5895d1de30ef2907eb21fbbab29ca94c5b08b1a78"
+
+[[package]]
+name = "windows_x86_64_gnullvm"
+version = "0.52.6"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "24d5b23dc417412679681396f2b49f3de8c1473deb516bd34410872eff51ed0d"
+
+[[package]]
+name = "windows_x86_64_msvc"
+version = "0.52.6"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "589f6da84c646204747d1270a2a5661ea66ed1cced2631d546fdfb155959f9ec"
+
 [[package]]
 name = "winnow"
 version = "0.7.14"
@@ -1318,6 +1874,94 @@ dependencies = [
  "memchr",
 ]
 
+[[package]]
+name = "wit-bindgen"
+version = "0.51.0"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "d7249219f66ced02969388cf2bb044a09756a083d0fab1e566056b04d9fbcaa5"
+dependencies = [
+ "wit-bindgen-rust-macro",
+]
+
+[[package]]
+name = "wit-bindgen-core"
+version = "0.51.0"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "ea61de684c3ea68cb082b7a88508a8b27fcc8b797d738bfc99a82facf1d752dc"
+dependencies = [
+ "anyhow",
+ "heck",
+ "wit-parser",
+]
+
+[[package]]
+name = "wit-bindgen-rust"
+version = "0.51.0"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "b7c566e0f4b284dd6561c786d9cb0142da491f46a9fbed79ea69cdad5db17f21"
+dependencies = [
+ "anyhow",
+ "heck",
+ "indexmap",
+ "prettyplease",
+ "syn",
+ "wasm-metadata",
+ "wit-bindgen-core",
+ "wit-component",
+]
+
+[[package]]
+name = "wit-bindgen-rust-macro"
+version = "0.51.0"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "0c0f9bfd77e6a48eccf51359e3ae77140a7f50b1e2ebfe62422d8afdaffab17a"
+dependencies = [
+ "anyhow",
+ "prettyplease",
+ "proc-macro2",
+ "quote",
+ "syn",
+ "wit-bindgen-core",
+ "wit-bindgen-rust",
+]
+
+[[package]]
+name = "wit-component"
+version = "0.244.0"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "9d66ea20e9553b30172b5e831994e35fbde2d165325bec84fc43dbf6f4eb9cb2"
+dependencies = [
+ "anyhow",
+ "bitflags 2.11.0",
+ "indexmap",
+ "log",
+ "serde",
+ "serde_derive",
+ "serde_json",
+ "wasm-encoder",
+ "wasm-metadata",
+ "wasmparser",
+ "wit-parser",
+]
+
+[[package]]
+name = "wit-parser"
+version = "0.244.0"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "ecc8ac4bc1dc3381b7f59c34f00b67e18f910c2c0f50015669dde7def656a736"
+dependencies = [
+ "anyhow",
+ "id-arena",
+ "indexmap",
+ "log",
+ "semver",
+ "serde",
+ "serde_derive",
+ "serde_json",
+ "unicode-xid",
+ "wasmparser",
+]
+
 [[package]]
 name = "yaml-rust"
 version = "0.4.5"

docs-gen/Cargo.toml

@@ -14,3 +14,9 @@ toml = "0.8"
 syntect = "5"
 anyhow = "1"
 clap = { version = "4", features = ["derive"] }
+notify = "7"
+tiny_http = "0.12"
+tungstenite = "0.24"
+open = "5"
+tempfile = "3"
+socket2 = { version = "0.5", features = ["all"] }

docs-gen/defaults/config.toml

@@ -3,6 +3,15 @@ title = "My Docs"
 base_url = "https://example.com"
 base_path = ""
 
+# [[nav]]
+# label = "Guide"
+# path = "guide/"
+#
+# [[nav]]
+# label = "GitHub"
+# url = "https://github.com/your/repo"
+# icon = "github"
+
 [i18n]
 default_lang = "en"
 langs = ["en", "ja"]

docs-gen/defaults/static/css/main.css

@@ -86,14 +86,22 @@ a:hover {
 }
 
 .header-nav a {
+  display: flex;
+  align-items: center;
+  gap: 4px;
   color: var(--header-nav-link);
   font-size: 0.9rem;
 }
 
+.header-nav a svg {
+  flex-shrink: 0;
+  opacity: 0.85;
+}
+
 .header-tools {
   display: flex;
   align-items: center;
-  gap: 8px;
+  gap: 2px;
 }
 
 .lang-selector {
@@ -101,17 +109,21 @@ a:hover {
 }
 
 .lang-btn {
+  display: flex;
+  align-items: center;
+  gap: 5px;
   background: none;
-  border: 1px solid var(--text-muted);
+  border: none;
   color: var(--text);
-  padding: 4px 10px;
+  padding: 4px 6px;
   border-radius: 4px;
   cursor: pointer;
   font-size: 0.85rem;
+  opacity: 0.8;
 }
 
 .lang-btn:hover {
-  border-color: var(--text);
+  opacity: 1;
 }
 
 .lang-popup {
@@ -423,16 +435,18 @@ a:hover {
 
 /* Theme toggle */
 .theme-toggle {
+  display: flex;
+  align-items: center;
+  justify-content: center;
   background: none;
-  border: 1px solid var(--text-muted);
+  border: none;
   color: var(--text);
-  padding: 4px 8px;
+  padding: 5px 6px;
   border-radius: 4px;
   cursor: pointer;
-  font-size: 1rem;
-  line-height: 1;
+  opacity: 0.8;
 }
 
 .theme-toggle:hover {
-  border-color: var(--text);
+  opacity: 1;
 }

docs-gen/defaults/static/favicon.svg

@@ -0,0 +1,4 @@
+<svg xmlns="http://www.w3.org/2000/svg" fill="none" viewBox="0 0 24 24" stroke-width="1.5" stroke="currentColor" class="size-6">
+  <path stroke-linecap="round" stroke-linejoin="round" d="M9.594 3.94c.09-.542.56-.94 1.11-.94h2.593c.55 0 1.02.398 1.11.94l.213 1.281c.063.374.313.686.645.87.074.04.147.083.22.127.325.196.72.257 1.075.124l1.217-.456a1.125 1.125 0 0 1 1.37.49l1.296 2.247a1.125 1.125 0 0 1-.26 1.431l-1.003.827c-.293.241-.438.613-.43.992a7.723 7.723 0 0 1 0 .255c-.008.378.137.75.43.991l1.004.827c.424.35.534.955.26 1.43l-1.298 2.247a1.125 1.125 0 0 1-1.369.491l-1.217-.456c-.355-.133-.75-.072-1.076.124a6.47 6.47 0 0 1-.22.128c-.331.183-.581.495-.644.869l-.213 1.281c-.09.543-.56.94-1.11.94h-2.594c-.55 0-1.019-.398-1.11-.94l-.213-1.281c-.062-.374-.312-.686-.644-.87a6.52 6.52 0 0 1-.22-.127c-.325-.196-.72-.257-1.076-.124l-1.217.456a1.125 1.125 0 0 1-1.369-.49l-1.297-2.247a1.125 1.125 0 0 1 .26-1.431l1.004-.827c.292-.24.437-.613.43-.991a6.932 6.932 0 0 1 0-.255c.007-.38-.138-.751-.43-.992l-1.004-.827a1.125 1.125 0 0 1-.26-1.43l1.297-2.247a1.125 1.125 0 0 1 1.37-.491l1.216.456c.356.133.751.072 1.076-.124.072-.044.146-.086.22-.128.332-.183.582-.495.644-.869l.214-1.28Z" />
+  <path stroke-linecap="round" stroke-linejoin="round" d="M15 12a3 3 0 1 1-6 0 3 3 0 0 1 6 0Z" />
+</svg>

docs-gen/defaults/static/js/main.js

@@ -33,6 +33,10 @@
   var btn = document.querySelector('.theme-toggle');
   if (!btn) return;
 
+  // Feather Icons: sun (light mode) and moon (dark mode)
+  var sunSVG = '<svg xmlns="http://www.w3.org/2000/svg" width="16" height="16" viewBox="0 0 24 24" fill="none" stroke="currentColor" stroke-width="2" stroke-linecap="round" stroke-linejoin="round"><circle cx="12" cy="12" r="5"/><line x1="12" y1="1" x2="12" y2="3"/><line x1="12" y1="21" x2="12" y2="23"/><line x1="4.22" y1="4.22" x2="5.64" y2="5.64"/><line x1="18.36" y1="18.36" x2="19.78" y2="19.78"/><line x1="1" y1="12" x2="3" y2="12"/><line x1="21" y1="12" x2="23" y2="12"/><line x1="4.22" y1="19.78" x2="5.64" y2="18.36"/><line x1="18.36" y1="5.64" x2="19.78" y2="4.22"/></svg>';
+  var moonSVG = '<svg xmlns="http://www.w3.org/2000/svg" width="16" height="16" viewBox="0 0 24 24" fill="none" stroke="currentColor" stroke-width="2" stroke-linecap="round" stroke-linejoin="round"><path d="M21 12.79A9 9 0 1 1 11.21 3 7 7 0 0 0 21 12.79z"/></svg>';
+
   function getTheme() {
     var stored = localStorage.getItem('preferred-theme');
     if (stored) return stored;
@@ -45,7 +49,7 @@
     } else {
       document.documentElement.removeAttribute('data-theme');
     }
-    btn.textContent = theme === 'light' ? '\u2600\uFE0F' : '\uD83C\uDF19';
+    btn.innerHTML = theme === 'light' ? sunSVG : moonSVG;
   }
 
   applyTheme(getTheme());

docs-gen/defaults/templates/base.html

@@ -4,6 +4,7 @@
   <meta charset="utf-8">
   <meta name="viewport" content="width=device-width, initial-scale=1">
   <title>{{ page.title }} - {{ site.title }}</title>
+  <link rel="icon" type="image/svg+xml" href="{{ site.base_path }}/favicon.svg">
   <link rel="stylesheet" href="{{ site.base_path }}/css/main.css">
   <script>
     (function() {
@@ -19,14 +20,31 @@
       <a href="{{ site.base_path }}/{{ lang }}/" class="header-title">{{ site.title }}{% if site.version %} <span style="font-size:0.75em;font-weight:normal;margin-left:4px">v{{ site.version }}</span>{% endif %}</a>
       <div class="header-spacer"></div>
       <nav class="header-nav">
-        <a href="{{ site.base_path }}/{{ lang }}/">Home</a>
-        <a href="{{ site.base_path }}/{{ lang }}/tour/">Tour</a>
-        <a href="https://github.com/yhirose/cpp-httplib">GitHub</a>
+        <a href="{{ site.base_path }}/{{ lang }}/">
+          <svg xmlns="http://www.w3.org/2000/svg" width="14" height="14" viewBox="0 0 24 24" fill="none" stroke="currentColor" stroke-width="2" stroke-linecap="round" stroke-linejoin="round"><path d="M3 9l9-7 9 7v11a2 2 0 0 1-2 2H5a2 2 0 0 1-2-2z"/><polyline points="9 22 9 12 15 12 15 22"/></svg>
+          Home
+        </a>
+        {% for link in site.nav %}
+        {% if link.url %}
+        <a href="{{ link.url }}"{% if link.icon_svg %} aria-label="{{ link.label }}"{% endif %}>
+          {% if link.icon_svg %}{{ link.icon_svg | safe }}{% endif %}
+          {{ link.label }}
+        </a>
+        {% elif link.path %}
+        <a href="{{ site.base_path }}/{{ lang }}/{{ link.path }}">
+          {% if link.icon_svg %}{{ link.icon_svg | safe }}{% endif %}
+          {{ link.label }}
+        </a>
+        {% endif %}
+        {% endfor %}
       </nav>
       <div class="header-tools">
         <button class="theme-toggle" aria-label="Toggle theme"></button>
         <div class="lang-selector">
-          <button class="lang-btn" aria-label="Language">{{ lang | upper }}</button>
+          <button class="lang-btn" aria-label="Language">
+            <svg xmlns="http://www.w3.org/2000/svg" width="14" height="14" viewBox="0 0 24 24" fill="none" stroke="currentColor" stroke-width="2" stroke-linecap="round" stroke-linejoin="round"><circle cx="12" cy="12" r="10"/><line x1="2" y1="12" x2="22" y2="12"/><path d="M12 2a15.3 15.3 0 0 1 4 10 15.3 15.3 0 0 1-4 10 15.3 15.3 0 0 1-4-10 15.3 15.3 0 0 1 4-10z"/></svg>
+            {{ lang | upper }}
+          </button>
           <ul class="lang-popup">
             {% for l in site.langs %}
             <li><a href="#" data-lang="{{ l }}">{{ l | upper }}</a></li>

docs-gen/src/builder.rs

@@ -1,4 +1,4 @@
-use crate::config::SiteConfig;
+use crate::config::{NavLink, SiteConfig};
 use crate::defaults;
 use crate::markdown::{Frontmatter, MarkdownRenderer};
 use anyhow::{Context, Result};
@@ -30,6 +30,7 @@ struct SiteContext {
     base_url: String,
     base_path: String,
     langs: Vec<String>,
+    nav: Vec<NavLink>,
 }
 
 struct Page {
@@ -102,6 +103,7 @@ pub fn build(src: &Path, out: &Path) -> Result<()> {
                 base_url: config.site.base_url.clone(),
                 base_path: config.site.base_path.clone(),
                 langs: config.i18n.langs.clone(),
+                nav: config.nav.clone(),
             });
 
             // Set active state and pass nav

docs-gen/src/config.rs

@@ -1,5 +1,5 @@
 use anyhow::{Context, Result};
-use serde::Deserialize;
+use serde::{Deserialize, Serialize};
 use std::path::Path;
 
 #[derive(Debug, Deserialize)]
@@ -7,6 +7,20 @@ pub struct SiteConfig {
     pub site: Site,
     pub i18n: I18n,
     pub highlight: Option<Highlight>,
+    #[serde(default)]
+    pub nav: Vec<NavLink>,
+}
+
+/// A navigation link entry defined in config.toml under [[nav]].
+#[derive(Debug, Deserialize, Serialize, Clone)]
+pub struct NavLink {
+    pub label: String,
+    /// Absolute or external URL (e.g. GitHub link).
+    pub url: Option<String>,
+    /// Path relative to /<base_path>/<lang>/ (e.g. "tour/").
+    pub path: Option<String>,
+    /// Optional inline SVG string to display as an icon.
+    pub icon_svg: Option<String>,
 }
 
 #[derive(Debug, Deserialize)]

docs-gen/src/defaults.rs

@@ -7,6 +7,7 @@ pub const TEMPLATE_PORTAL: &str = include_str!("../defaults/templates/portal.htm
 
 pub const STATIC_CSS_MAIN: &str = include_str!("../defaults/static/css/main.css");
 pub const STATIC_JS_MAIN: &str = include_str!("../defaults/static/js/main.js");
+pub const STATIC_FAVICON_SVG: &str = include_str!("../defaults/static/favicon.svg");
 
 // Init command templates
 pub const INIT_CONFIG_TOML: &str = include_str!("../defaults/config.toml");
@@ -27,6 +28,7 @@ pub fn default_static_files() -> Vec<(&'static str, &'static str)> {
     vec![
         ("css/main.css", STATIC_CSS_MAIN),
         ("js/main.js", STATIC_JS_MAIN),
+        ("favicon.svg", STATIC_FAVICON_SVG),
     ]
 }
 

docs-gen/src/main.rs

@@ -2,6 +2,7 @@ mod builder;
 mod config;
 mod defaults;
 mod markdown;
+mod serve;
 
 use anyhow::Result;
 use clap::{Parser, Subcommand, CommandFactory};
@@ -41,6 +42,20 @@ enum Command {
         #[arg(default_value = ".")]
         src: PathBuf,
     },
+    /// Start a local development server with live-reload
+    Serve {
+        /// Source directory containing config.toml
+        #[arg(default_value = ".")]
+        src: PathBuf,
+
+        /// Port number for the HTTP server
+        #[arg(long, default_value = "8080")]
+        port: u16,
+
+        /// Open browser automatically
+        #[arg(long)]
+        open: bool,
+    },
 }
 
 fn main() -> Result<()> {
@@ -49,6 +64,7 @@ fn main() -> Result<()> {
     match cli.command {
         Some(Command::Build { src, out }) => builder::build(&src, &out),
         Some(Command::Init { src }) => cmd_init(&src),
+        Some(Command::Serve { src, port, open }) => serve::serve(&src, port, open),
         None => {
             Cli::command().print_help()?;
             println!();

docs-gen/src/serve.rs

@@ -0,0 +1,357 @@
+use crate::builder;
+use crate::config::SiteConfig;
+use anyhow::{Context, Result};
+use notify::{Event, RecursiveMode, Watcher};
+use socket2::{Domain, Protocol, Socket, Type};
+use std::fs;
+use std::io::Write;
+use std::net::{TcpListener, TcpStream};
+use std::path::Path;
+use std::sync::mpsc;
+use std::sync::{Arc, Mutex};
+use std::thread;
+use std::time::Duration;
+use walkdir::WalkDir;
+
+/// Live-reload WebSocket script injected into every HTML page during serve.
+const LIVE_RELOAD_SCRIPT: &str = r#"<script>
+(function() {
+  var ws = new WebSocket('ws://' + location.hostname + ':{{WS_PORT}}');
+  ws.onmessage = function(e) { if (e.data === 'reload') location.reload(); };
+  ws.onclose = function() {
+    setTimeout(function() { location.reload(); }, 2000);
+  };
+})();
+</script>"#;
+
+/// Run the serve command: build, start HTTP + WebSocket servers, watch for changes.
+pub fn serve(src: &Path, port: u16, open_browser: bool) -> Result<()> {
+    let config = SiteConfig::load(src)?;
+    let base_path = config.site.base_path.clone();
+    let ws_port = port + 1;
+
+    // Create temp directory for serving
+    let tmp_dir = tempfile::tempdir().context("Failed to create temp directory")?;
+    let serve_root = tmp_dir.path().to_path_buf();
+
+    println!("Serving from temp directory: {}", serve_root.display());
+
+    // Initial build
+    build_and_copy(src, &serve_root, &base_path, ws_port)?;
+
+    // Track connected WebSocket clients
+    let clients: Arc<Mutex<Vec<TcpStream>>> = Arc::new(Mutex::new(Vec::new()));
+
+    // Create HTTP and WebSocket listeners upfront with SO_REUSEADDR
+    // so that rapid restarts (after Ctrl+C) don't hit "address in use".
+    let http_listener = create_reuse_listener(port)
+        .with_context(|| format!("Failed to bind HTTP server to port {}", port))?;
+    let ws_listener = create_reuse_listener(ws_port)
+        .with_context(|| format!("Failed to bind WebSocket server to port {}", ws_port))?;
+
+    // Start WebSocket server for live-reload notifications
+    let ws_clients = clients.clone();
+    thread::spawn(move || {
+        if let Err(e) = run_ws_server(ws_listener, ws_clients) {
+            eprintln!("WebSocket server error: {}", e);
+        }
+    });
+
+    // Start HTTP server
+    let http_root = serve_root.clone();
+    thread::spawn(move || {
+        if let Err(e) = run_http_server(http_listener, &http_root) {
+            eprintln!("HTTP server error: {}", e);
+        }
+    });
+
+    let url = if base_path.is_empty() {
+        format!("http://localhost:{}/", port)
+    } else {
+        format!("http://localhost:{}{}/", port, base_path)
+    };
+
+    println!("\n  Local: {}", url);
+    println!("  Press Ctrl+C to stop.\n");
+
+    if open_browser {
+        let _ = open::that(&url);
+    }
+
+    // File watcher
+    let (tx, rx) = mpsc::channel();
+
+    let mut watcher = notify::recommended_watcher(move |res: Result<Event, notify::Error>| {
+        if let Ok(event) = res {
+            if event.kind.is_modify() || event.kind.is_create() || event.kind.is_remove() {
+                let _ = tx.send(());
+            }
+        }
+    })?;
+
+    let src_abs = fs::canonicalize(src)?;
+    watcher.watch(&src_abs, RecursiveMode::Recursive)?;
+
+    println!("Watching for changes in {}...", src_abs.display());
+
+    // Debounce: wait for changes, then rebuild
+    loop {
+        // Block until a change notification arrives
+        if rx.recv().is_err() {
+            break;
+        }
+        // Drain any additional events within a short debounce window
+        thread::sleep(Duration::from_millis(200));
+        while rx.try_recv().is_ok() {}
+
+        println!("Change detected, rebuilding...");
+        match build_and_copy(src, &serve_root, &base_path, ws_port) {
+            Ok(()) => {
+                println!("Rebuild complete. Notifying browser...");
+                notify_clients(&clients);
+            }
+            Err(e) => {
+                eprintln!("Rebuild failed: {}", e);
+            }
+        }
+    }
+
+    Ok(())
+}
+
+/// Build site into a temp build dir, then copy to serve_root/<base_path>/
+/// with live-reload script injected.
+fn build_and_copy(src: &Path, serve_root: &Path, base_path: &str, ws_port: u16) -> Result<()> {
+    // Build into a temporary output directory
+    let build_tmp = tempfile::tempdir().context("Failed to create build temp dir")?;
+    let build_out = build_tmp.path();
+
+    builder::build(src, build_out)?;
+
+    // Determine the target directory under serve_root
+    let target = if base_path.is_empty() {
+        serve_root.to_path_buf()
+    } else {
+        let bp = base_path.trim_start_matches('/');
+        serve_root.join(bp)
+    };
+
+    // Clean target and copy
+    if target.exists() {
+        fs::remove_dir_all(&target).ok();
+    }
+    copy_dir_recursive(build_out, &target)?;
+
+    // Inject live-reload script into all HTML files
+    inject_live_reload(&target, ws_port)?;
+
+    Ok(())
+}
+
+/// Inject live-reload WebSocket script into all HTML files under dir.
+fn inject_live_reload(dir: &Path, ws_port: u16) -> Result<()> {
+    let script = LIVE_RELOAD_SCRIPT.replace("{{WS_PORT}}", &ws_port.to_string());
+
+    for entry in WalkDir::new(dir)
+        .into_iter()
+        .filter_map(|e| e.ok())
+        .filter(|e| {
+            e.path()
+                .extension()
+                .map_or(false, |ext| ext == "html")
+        })
+    {
+        let path = entry.path();
+        let content = fs::read_to_string(path)?;
+        if let Some(pos) = content.rfind("</body>") {
+            let injected = format!("{}{}{}", &content[..pos], script, &content[pos..]);
+            fs::write(path, injected)?;
+        }
+    }
+
+    Ok(())
+}
+
+/// Simple HTTP static file server using tiny_http.
+fn run_http_server(listener: TcpListener, root: &Path) -> Result<()> {
+    let server = tiny_http::Server::from_listener(listener, None)
+        .map_err(|e| anyhow::anyhow!("HTTP server: {}", e))?;
+
+    for request in server.incoming_requests() {
+        let url_path = percent_decode(request.url());
+        let rel = url_path.trim_start_matches('/');
+
+        let file_path = if rel.is_empty() {
+            root.join("index.html")
+        } else {
+            let candidate = root.join(rel);
+            if candidate.is_dir() {
+                candidate.join("index.html")
+            } else {
+                candidate
+            }
+        };
+
+        if file_path.exists() && file_path.is_file() {
+            let content = fs::read(&file_path).unwrap_or_default();
+            let mime = guess_mime(&file_path);
+            let response = tiny_http::Response::from_data(content)
+                .with_header(
+                    tiny_http::Header::from_bytes(&b"Content-Type"[..], mime.as_bytes()).unwrap(),
+                );
+            let _ = request.respond(response);
+        } else {
+            let response = tiny_http::Response::from_string("404 Not Found")
+                .with_status_code(404);
+            let _ = request.respond(response);
+        }
+    }
+
+    Ok(())
+}
+
+/// WebSocket server that accepts connections and stores them for later notification.
+fn run_ws_server(listener: TcpListener, clients: Arc<Mutex<Vec<TcpStream>>>) -> Result<()> {
+
+    for stream in listener.incoming().flatten() {
+        let clients = clients.clone();
+        thread::spawn(move || {
+            if let Ok(ws) = tungstenite::accept(stream.try_clone().unwrap()) {
+                // Store the underlying TCP stream for later notification
+                if let Ok(mut list) = clients.lock() {
+                    list.push(stream);
+                }
+                // Keep the WebSocket connection alive - read until closed
+                let mut ws = ws;
+                loop {
+                    match ws.read() {
+                        Ok(msg) => {
+                            if msg.is_close() {
+                                break;
+                            }
+                        }
+                        Err(_) => break,
+                    }
+                }
+            }
+        });
+    }
+
+    Ok(())
+}
+
+/// Send "reload" to all connected WebSocket clients.
+fn notify_clients(clients: &Arc<Mutex<Vec<TcpStream>>>) {
+    if let Ok(mut list) = clients.lock() {
+        let mut alive = Vec::new();
+        for stream in list.drain(..) {
+            if stream.try_clone().is_ok() {
+                // Re-wrap as WebSocket and send reload message
+                // Since we can't easily re-wrap existing TCP streams,
+                // we'll use a simpler approach: raw WebSocket frame
+                if send_ws_text_frame(&stream, "reload").is_ok() {
+                    alive.push(stream);
+                }
+            }
+        }
+        *list = alive;
+    }
+}
+
+/// Send a WebSocket text frame directly on a TCP stream.
+fn send_ws_text_frame(mut stream: &TcpStream, msg: &str) -> Result<()> {
+    let payload = msg.as_bytes();
+    let len = payload.len();
+
+    // WebSocket text frame: opcode 0x81
+    let mut frame = Vec::new();
+    frame.push(0x81);
+    if len < 126 {
+        frame.push(len as u8);
+    } else if len < 65536 {
+        frame.push(126);
+        frame.push((len >> 8) as u8);
+        frame.push((len & 0xFF) as u8);
+    }
+    frame.extend_from_slice(payload);
+
+    stream.write_all(&frame)?;
+    stream.flush()?;
+    Ok(())
+}
+
+fn copy_dir_recursive(src: &Path, dst: &Path) -> Result<()> {
+    for entry in WalkDir::new(src).into_iter().filter_map(|e| e.ok()) {
+        let path = entry.path();
+        let rel = path.strip_prefix(src)?;
+        let target = dst.join(rel);
+
+        if path.is_dir() {
+            fs::create_dir_all(&target)?;
+        } else {
+            if let Some(parent) = target.parent() {
+                fs::create_dir_all(parent)?;
+            }
+            fs::copy(path, &target)?;
+        }
+    }
+    Ok(())
+}
+
+fn guess_mime(path: &Path) -> String {
+    match path.extension().and_then(|e| e.to_str()) {
+        Some("html") => "text/html; charset=utf-8".to_string(),
+        Some("css") => "text/css; charset=utf-8".to_string(),
+        Some("js") => "application/javascript; charset=utf-8".to_string(),
+        Some("json") => "application/json; charset=utf-8".to_string(),
+        Some("svg") => "image/svg+xml".to_string(),
+        Some("png") => "image/png".to_string(),
+        Some("jpg") | Some("jpeg") => "image/jpeg".to_string(),
+        Some("gif") => "image/gif".to_string(),
+        Some("ico") => "image/x-icon".to_string(),
+        Some("wasm") => "application/wasm".to_string(),
+        Some("woff") => "font/woff".to_string(),
+        Some("woff2") => "font/woff2".to_string(),
+        Some("ttf") => "font/ttf".to_string(),
+        _ => "application/octet-stream".to_string(),
+    }
+}
+
+fn percent_decode(input: &str) -> String {
+    let mut result = String::with_capacity(input.len());
+    let mut chars = input.bytes();
+    while let Some(b) = chars.next() {
+        if b == b'%' {
+            let hi = chars.next().and_then(|c| hex_val(c));
+            let lo = chars.next().and_then(|c| hex_val(c));
+            if let (Some(h), Some(l)) = (hi, lo) {
+                result.push((h << 4 | l) as char);
+            }
+        } else {
+            result.push(b as char);
+        }
+    }
+    result
+}
+
+fn hex_val(b: u8) -> Option<u8> {
+    match b {
+        b'0'..=b'9' => Some(b - b'0'),
+        b'a'..=b'f' => Some(b - b'a' + 10),
+        b'A'..=b'F' => Some(b - b'A' + 10),
+        _ => None,
+    }
+}
+
+/// Create a TCP listener with SO_REUSEADDR (and SO_REUSEPORT on Unix) set,
+/// so that rapid restarts after Ctrl+C don't fail with "address in use".
+fn create_reuse_listener(port: u16) -> Result<TcpListener> {
+    let socket = Socket::new(Domain::IPV4, Type::STREAM, Some(Protocol::TCP))?;
+    socket.set_reuse_address(true)?;
+    #[cfg(unix)]
+    socket.set_reuse_port(true)?;
+    let addr: std::net::SocketAddr = format!("0.0.0.0:{}", port).parse()?;
+    socket.bind(&addr.into())?;
+    socket.listen(128)?;
+    Ok(socket.into())
+}

docs-src/config.toml

@@ -6,6 +6,16 @@ base_url = "https://yhirose.github.io/cpp-httplib"
 # or "" for local development (python3 -m http.server).
 base_path = "/cpp-httplib"
 
+[[nav]]
+label = "Tour"
+path = "tour/"
+icon_svg = '<svg xmlns="http://www.w3.org/2000/svg" width="14" height="14" viewBox="0 0 24 24" fill="none" stroke="currentColor" stroke-width="2" stroke-linecap="round" stroke-linejoin="round"><circle cx="12" cy="12" r="10"/><polygon points="16.24 7.76 14.12 14.12 7.76 16.24 9.88 9.88 16.24 7.76"/></svg>'
+
+[[nav]]
+label = "GitHub"
+url = "https://github.com/yhirose/cpp-httplib"
+icon_svg = '<svg xmlns="http://www.w3.org/2000/svg" width="16" height="16" viewBox="0 0 24 24" fill="none" stroke="currentColor" stroke-width="2" stroke-linecap="round" stroke-linejoin="round"><path d="M9 19c-5 1.5-5-2.5-7-3m14 6v-3.87a3.37 3.37 0 0 0-.94-2.61c3.14-.35 6.44-1.54 6.44-7A5.44 5.44 0 0 0 20 4.77 5.07 5.07 0 0 0 19.91 1S18.73.65 16 2.48a13.38 13.38 0 0 0-7 0C6.27.65 5.09 1 5.09 1A5.07 5.07 0 0 0 5 4.77a5.44 5.44 0 0 0-1.5 3.78c0 5.42 3.3 6.61 6.44 7A3.37 3.37 0 0 0 9 18.13V22"/></svg>'
+
 [i18n]
 default_lang = "en"
 langs = ["en", "ja"]

docs/css/main.css

@@ -86,10 +86,18 @@ a:hover {
 }
 
 .header-nav a {
+  display: flex;
+  align-items: center;
+  gap: 4px;
   color: var(--header-nav-link);
   font-size: 0.9rem;
 }
 
+.header-nav a svg {
+  flex-shrink: 0;
+  opacity: 0.85;
+}
+
 .header-tools {
   display: flex;
   align-items: center;
@@ -101,17 +109,21 @@ a:hover {
 }
 
 .lang-btn {
+  display: flex;
+  align-items: center;
+  gap: 5px;
   background: none;
-  border: 1px solid var(--text-muted);
+  border: none;
   color: var(--text);
-  padding: 4px 10px;
+  padding: 4px 6px;
   border-radius: 4px;
   cursor: pointer;
   font-size: 0.85rem;
+  opacity: 0.8;
 }
 
 .lang-btn:hover {
-  border-color: var(--text);
+  opacity: 1;
 }
 
 .lang-popup {
@@ -423,16 +435,18 @@ a:hover {
 
 /* Theme toggle */
 .theme-toggle {
+  display: flex;
+  align-items: center;
+  justify-content: center;
   background: none;
-  border: 1px solid var(--text-muted);
+  border: none;
   color: var(--text);
-  padding: 4px 8px;
+  padding: 5px 6px;
   border-radius: 4px;
   cursor: pointer;
-  font-size: 1rem;
-  line-height: 1;
+  opacity: 0.8;
 }
 
 .theme-toggle:hover {
-  border-color: var(--text);
+  opacity: 1;
 }

docs/en/cookbook/index.html

@@ -4,6 +4,7 @@
   <meta charset="utf-8">
   <meta name="viewport" content="width=device-width, initial-scale=1">
   <title>Cookbook - cpp-httplib</title>
+  <link rel="icon" type="image/svg+xml" href="&#x2F;cpp-httplib/favicon.svg">
   <link rel="stylesheet" href="&#x2F;cpp-httplib/css/main.css">
   <script>
     (function() {
@@ -19,14 +20,30 @@
       <a href="&#x2F;cpp-httplib/en/" class="header-title">cpp-httplib <span style="font-size:0.75em;font-weight:normal;margin-left:4px">v0.35.0</span></a>
       <div class="header-spacer"></div>
       <nav class="header-nav">
-        <a href="&#x2F;cpp-httplib/en/">Home</a>
-        <a href="&#x2F;cpp-httplib/en/tour/">Tour</a>
-        <a href="https://github.com/yhirose/cpp-httplib">GitHub</a>
+        <a href="&#x2F;cpp-httplib/en/">
+          <svg xmlns="http://www.w3.org/2000/svg" width="14" height="14" viewBox="0 0 24 24" fill="none" stroke="currentColor" stroke-width="2" stroke-linecap="round" stroke-linejoin="round"><path d="M3 9l9-7 9 7v11a2 2 0 0 1-2 2H5a2 2 0 0 1-2-2z"/><polyline points="9 22 9 12 15 12 15 22"/></svg>
+          Home
+        </a>
+        
+        
+        <a href="&#x2F;cpp-httplib/en/tour&#x2F;">Tour</a>
+        
+        
+        
+        <a href="https:&#x2F;&#x2F;github.com&#x2F;yhirose&#x2F;cpp-httplib" aria-label="GitHub">
+          <svg xmlns="http://www.w3.org/2000/svg" width="16" height="16" viewBox="0 0 24 24" fill="none" stroke="currentColor" stroke-width="2" stroke-linecap="round" stroke-linejoin="round"><path d="M9 19c-5 1.5-5-2.5-7-3m14 6v-3.87a3.37 3.37 0 0 0-.94-2.61c3.14-.35 6.44-1.54 6.44-7A5.44 5.44 0 0 0 20 4.77 5.07 5.07 0 0 0 19.91 1S18.73.65 16 2.48a13.38 13.38 0 0 0-7 0C6.27.65 5.09 1 5.09 1A5.07 5.07 0 0 0 5 4.77a5.44 5.44 0 0 0-1.5 3.78c0 5.42 3.3 6.61 6.44 7A3.37 3.37 0 0 0 9 18.13V22"/></svg>
+          GitHub
+        </a>
+        
+        
       </nav>
       <div class="header-tools">
         <button class="theme-toggle" aria-label="Toggle theme"></button>
         <div class="lang-selector">
-          <button class="lang-btn" aria-label="Language">EN</button>
+          <button class="lang-btn" aria-label="Language">
+            <svg xmlns="http://www.w3.org/2000/svg" width="14" height="14" viewBox="0 0 24 24" fill="none" stroke="currentColor" stroke-width="2" stroke-linecap="round" stroke-linejoin="round"><circle cx="12" cy="12" r="10"/><line x1="2" y1="12" x2="22" y2="12"/><path d="M12 2a15.3 15.3 0 0 1 4 10 15.3 15.3 0 0 1-4 10 15.3 15.3 0 0 1-4-10 15.3 15.3 0 0 1 4-10z"/></svg>
+            EN
+          </button>
           <ul class="lang-popup">
             
             <li><a href="#" data-lang="en">EN</a></li>

docs/en/index.html

@@ -4,6 +4,7 @@
   <meta charset="utf-8">
   <meta name="viewport" content="width=device-width, initial-scale=1">
   <title>cpp-httplib - cpp-httplib</title>
+  <link rel="icon" type="image/svg+xml" href="&#x2F;cpp-httplib/favicon.svg">
   <link rel="stylesheet" href="&#x2F;cpp-httplib/css/main.css">
   <script>
     (function() {
@@ -19,14 +20,30 @@
       <a href="&#x2F;cpp-httplib/en/" class="header-title">cpp-httplib <span style="font-size:0.75em;font-weight:normal;margin-left:4px">v0.35.0</span></a>
       <div class="header-spacer"></div>
       <nav class="header-nav">
-        <a href="&#x2F;cpp-httplib/en/">Home</a>
-        <a href="&#x2F;cpp-httplib/en/tour/">Tour</a>
-        <a href="https://github.com/yhirose/cpp-httplib">GitHub</a>
+        <a href="&#x2F;cpp-httplib/en/">
+          <svg xmlns="http://www.w3.org/2000/svg" width="14" height="14" viewBox="0 0 24 24" fill="none" stroke="currentColor" stroke-width="2" stroke-linecap="round" stroke-linejoin="round"><path d="M3 9l9-7 9 7v11a2 2 0 0 1-2 2H5a2 2 0 0 1-2-2z"/><polyline points="9 22 9 12 15 12 15 22"/></svg>
+          Home
+        </a>
+        
+        
+        <a href="&#x2F;cpp-httplib/en/tour&#x2F;">Tour</a>
+        
+        
+        
+        <a href="https:&#x2F;&#x2F;github.com&#x2F;yhirose&#x2F;cpp-httplib" aria-label="GitHub">
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+          GitHub
+        </a>
+        
+        
       </nav>
       <div class="header-tools">
         <button class="theme-toggle" aria-label="Toggle theme"></button>
         <div class="lang-selector">
-          <button class="lang-btn" aria-label="Language">EN</button>
+          <button class="lang-btn" aria-label="Language">
+            <svg xmlns="http://www.w3.org/2000/svg" width="14" height="14" viewBox="0 0 24 24" fill="none" stroke="currentColor" stroke-width="2" stroke-linecap="round" stroke-linejoin="round"><circle cx="12" cy="12" r="10"/><line x1="2" y1="12" x2="22" y2="12"/><path d="M12 2a15.3 15.3 0 0 1 4 10 15.3 15.3 0 0 1-4 10 15.3 15.3 0 0 1-4-10 15.3 15.3 0 0 1 4-10z"/></svg>
+            EN
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docs/en/tour/01-getting-started/index.html

@@ -4,6 +4,7 @@
   <meta charset="utf-8">
   <meta name="viewport" content="width=device-width, initial-scale=1">
   <title>Getting Started - cpp-httplib</title>
+  <link rel="icon" type="image/svg+xml" href="&#x2F;cpp-httplib/favicon.svg">
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@@ -19,14 +20,30 @@
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       <div class="header-spacer"></div>
       <nav class="header-nav">
-        <a href="&#x2F;cpp-httplib/en/">Home</a>
-        <a href="&#x2F;cpp-httplib/en/tour/">Tour</a>
-        <a href="https://github.com/yhirose/cpp-httplib">GitHub</a>
+        <a href="&#x2F;cpp-httplib/en/">
+          <svg xmlns="http://www.w3.org/2000/svg" width="14" height="14" viewBox="0 0 24 24" fill="none" stroke="currentColor" stroke-width="2" stroke-linecap="round" stroke-linejoin="round"><path d="M3 9l9-7 9 7v11a2 2 0 0 1-2 2H5a2 2 0 0 1-2-2z"/><polyline points="9 22 9 12 15 12 15 22"/></svg>
+          Home
+        </a>
+        
+        
+        <a href="&#x2F;cpp-httplib/en/tour&#x2F;">Tour</a>
+        
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+        <a href="https:&#x2F;&#x2F;github.com&#x2F;yhirose&#x2F;cpp-httplib" aria-label="GitHub">
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+          GitHub
+        </a>
+        
+        
       </nav>
       <div class="header-tools">
         <button class="theme-toggle" aria-label="Toggle theme"></button>
         <div class="lang-selector">
-          <button class="lang-btn" aria-label="Language">EN</button>
+          <button class="lang-btn" aria-label="Language">
+            <svg xmlns="http://www.w3.org/2000/svg" width="14" height="14" viewBox="0 0 24 24" fill="none" stroke="currentColor" stroke-width="2" stroke-linecap="round" stroke-linejoin="round"><circle cx="12" cy="12" r="10"/><line x1="2" y1="12" x2="22" y2="12"/><path d="M12 2a15.3 15.3 0 0 1 4 10 15.3 15.3 0 0 1-4 10 15.3 15.3 0 0 1-4-10 15.3 15.3 0 0 1 4-10z"/></svg>
+            EN
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docs/en/tour/02-basic-client/index.html

@@ -4,6 +4,7 @@
   <meta charset="utf-8">
   <meta name="viewport" content="width=device-width, initial-scale=1">
   <title>Basic Client - cpp-httplib</title>
+  <link rel="icon" type="image/svg+xml" href="&#x2F;cpp-httplib/favicon.svg">
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   <script>
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@@ -19,14 +20,30 @@
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       <div class="header-spacer"></div>
       <nav class="header-nav">
-        <a href="&#x2F;cpp-httplib/en/">Home</a>
-        <a href="&#x2F;cpp-httplib/en/tour/">Tour</a>
-        <a href="https://github.com/yhirose/cpp-httplib">GitHub</a>
+        <a href="&#x2F;cpp-httplib/en/">
+          <svg xmlns="http://www.w3.org/2000/svg" width="14" height="14" viewBox="0 0 24 24" fill="none" stroke="currentColor" stroke-width="2" stroke-linecap="round" stroke-linejoin="round"><path d="M3 9l9-7 9 7v11a2 2 0 0 1-2 2H5a2 2 0 0 1-2-2z"/><polyline points="9 22 9 12 15 12 15 22"/></svg>
+          Home
+        </a>
+        
+        
+        <a href="&#x2F;cpp-httplib/en/tour&#x2F;">Tour</a>
+        
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+          GitHub
+        </a>
+        
+        
       </nav>
       <div class="header-tools">
         <button class="theme-toggle" aria-label="Toggle theme"></button>
         <div class="lang-selector">
-          <button class="lang-btn" aria-label="Language">EN</button>
+          <button class="lang-btn" aria-label="Language">
+            <svg xmlns="http://www.w3.org/2000/svg" width="14" height="14" viewBox="0 0 24 24" fill="none" stroke="currentColor" stroke-width="2" stroke-linecap="round" stroke-linejoin="round"><circle cx="12" cy="12" r="10"/><line x1="2" y1="12" x2="22" y2="12"/><path d="M12 2a15.3 15.3 0 0 1 4 10 15.3 15.3 0 0 1-4 10 15.3 15.3 0 0 1-4-10 15.3 15.3 0 0 1 4-10z"/></svg>
+            EN
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docs/en/tour/03-basic-server/index.html

@@ -4,6 +4,7 @@
   <meta charset="utf-8">
   <meta name="viewport" content="width=device-width, initial-scale=1">
   <title>Basic Server - cpp-httplib</title>
+  <link rel="icon" type="image/svg+xml" href="&#x2F;cpp-httplib/favicon.svg">
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   <script>
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@@ -19,14 +20,30 @@
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       <div class="header-spacer"></div>
       <nav class="header-nav">
-        <a href="&#x2F;cpp-httplib/en/">Home</a>
-        <a href="&#x2F;cpp-httplib/en/tour/">Tour</a>
-        <a href="https://github.com/yhirose/cpp-httplib">GitHub</a>
+        <a href="&#x2F;cpp-httplib/en/">
+          <svg xmlns="http://www.w3.org/2000/svg" width="14" height="14" viewBox="0 0 24 24" fill="none" stroke="currentColor" stroke-width="2" stroke-linecap="round" stroke-linejoin="round"><path d="M3 9l9-7 9 7v11a2 2 0 0 1-2 2H5a2 2 0 0 1-2-2z"/><polyline points="9 22 9 12 15 12 15 22"/></svg>
+          Home
+        </a>
+        
+        
+        <a href="&#x2F;cpp-httplib/en/tour&#x2F;">Tour</a>
+        
+        
+        
+        <a href="https:&#x2F;&#x2F;github.com&#x2F;yhirose&#x2F;cpp-httplib" aria-label="GitHub">
+          <svg xmlns="http://www.w3.org/2000/svg" width="16" height="16" viewBox="0 0 24 24" fill="none" stroke="currentColor" stroke-width="2" stroke-linecap="round" stroke-linejoin="round"><path d="M9 19c-5 1.5-5-2.5-7-3m14 6v-3.87a3.37 3.37 0 0 0-.94-2.61c3.14-.35 6.44-1.54 6.44-7A5.44 5.44 0 0 0 20 4.77 5.07 5.07 0 0 0 19.91 1S18.73.65 16 2.48a13.38 13.38 0 0 0-7 0C6.27.65 5.09 1 5.09 1A5.07 5.07 0 0 0 5 4.77a5.44 5.44 0 0 0-1.5 3.78c0 5.42 3.3 6.61 6.44 7A3.37 3.37 0 0 0 9 18.13V22"/></svg>
+          GitHub
+        </a>
+        
+        
       </nav>
       <div class="header-tools">
         <button class="theme-toggle" aria-label="Toggle theme"></button>
         <div class="lang-selector">
-          <button class="lang-btn" aria-label="Language">EN</button>
+          <button class="lang-btn" aria-label="Language">
+            <svg xmlns="http://www.w3.org/2000/svg" width="14" height="14" viewBox="0 0 24 24" fill="none" stroke="currentColor" stroke-width="2" stroke-linecap="round" stroke-linejoin="round"><circle cx="12" cy="12" r="10"/><line x1="2" y1="12" x2="22" y2="12"/><path d="M12 2a15.3 15.3 0 0 1 4 10 15.3 15.3 0 0 1-4 10 15.3 15.3 0 0 1-4-10 15.3 15.3 0 0 1 4-10z"/></svg>
+            EN
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             <li><a href="#" data-lang="en">EN</a></li>

docs/en/tour/04-static-file-server/index.html

@@ -4,6 +4,7 @@
   <meta charset="utf-8">
   <meta name="viewport" content="width=device-width, initial-scale=1">
   <title>Static File Server - cpp-httplib</title>
+  <link rel="icon" type="image/svg+xml" href="&#x2F;cpp-httplib/favicon.svg">
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   <script>
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@@ -19,14 +20,30 @@
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       <div class="header-spacer"></div>
       <nav class="header-nav">
-        <a href="&#x2F;cpp-httplib/en/">Home</a>
-        <a href="&#x2F;cpp-httplib/en/tour/">Tour</a>
-        <a href="https://github.com/yhirose/cpp-httplib">GitHub</a>
+        <a href="&#x2F;cpp-httplib/en/">
+          <svg xmlns="http://www.w3.org/2000/svg" width="14" height="14" viewBox="0 0 24 24" fill="none" stroke="currentColor" stroke-width="2" stroke-linecap="round" stroke-linejoin="round"><path d="M3 9l9-7 9 7v11a2 2 0 0 1-2 2H5a2 2 0 0 1-2-2z"/><polyline points="9 22 9 12 15 12 15 22"/></svg>
+          Home
+        </a>
+        
+        
+        <a href="&#x2F;cpp-httplib/en/tour&#x2F;">Tour</a>
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+        <a href="https:&#x2F;&#x2F;github.com&#x2F;yhirose&#x2F;cpp-httplib" aria-label="GitHub">
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+          GitHub
+        </a>
+        
+        
       </nav>
       <div class="header-tools">
         <button class="theme-toggle" aria-label="Toggle theme"></button>
         <div class="lang-selector">
-          <button class="lang-btn" aria-label="Language">EN</button>
+          <button class="lang-btn" aria-label="Language">
+            <svg xmlns="http://www.w3.org/2000/svg" width="14" height="14" viewBox="0 0 24 24" fill="none" stroke="currentColor" stroke-width="2" stroke-linecap="round" stroke-linejoin="round"><circle cx="12" cy="12" r="10"/><line x1="2" y1="12" x2="22" y2="12"/><path d="M12 2a15.3 15.3 0 0 1 4 10 15.3 15.3 0 0 1-4 10 15.3 15.3 0 0 1-4-10 15.3 15.3 0 0 1 4-10z"/></svg>
+            EN
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             <li><a href="#" data-lang="en">EN</a></li>

docs/en/tour/05-tls-setup/index.html

@@ -4,6 +4,7 @@
   <meta charset="utf-8">
   <meta name="viewport" content="width=device-width, initial-scale=1">
   <title>TLS Setup - cpp-httplib</title>
+  <link rel="icon" type="image/svg+xml" href="&#x2F;cpp-httplib/favicon.svg">
   <link rel="stylesheet" href="&#x2F;cpp-httplib/css/main.css">
   <script>
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@@ -19,14 +20,30 @@
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       <div class="header-spacer"></div>
       <nav class="header-nav">
-        <a href="&#x2F;cpp-httplib/en/">Home</a>
-        <a href="&#x2F;cpp-httplib/en/tour/">Tour</a>
-        <a href="https://github.com/yhirose/cpp-httplib">GitHub</a>
+        <a href="&#x2F;cpp-httplib/en/">
+          <svg xmlns="http://www.w3.org/2000/svg" width="14" height="14" viewBox="0 0 24 24" fill="none" stroke="currentColor" stroke-width="2" stroke-linecap="round" stroke-linejoin="round"><path d="M3 9l9-7 9 7v11a2 2 0 0 1-2 2H5a2 2 0 0 1-2-2z"/><polyline points="9 22 9 12 15 12 15 22"/></svg>
+          Home
+        </a>
+        
+        
+        <a href="&#x2F;cpp-httplib/en/tour&#x2F;">Tour</a>
+        
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+        <a href="https:&#x2F;&#x2F;github.com&#x2F;yhirose&#x2F;cpp-httplib" aria-label="GitHub">
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+          GitHub
+        </a>
+        
+        
       </nav>
       <div class="header-tools">
         <button class="theme-toggle" aria-label="Toggle theme"></button>
         <div class="lang-selector">
-          <button class="lang-btn" aria-label="Language">EN</button>
+          <button class="lang-btn" aria-label="Language">
+            <svg xmlns="http://www.w3.org/2000/svg" width="14" height="14" viewBox="0 0 24 24" fill="none" stroke="currentColor" stroke-width="2" stroke-linecap="round" stroke-linejoin="round"><circle cx="12" cy="12" r="10"/><line x1="2" y1="12" x2="22" y2="12"/><path d="M12 2a15.3 15.3 0 0 1 4 10 15.3 15.3 0 0 1-4 10 15.3 15.3 0 0 1-4-10 15.3 15.3 0 0 1 4-10z"/></svg>
+            EN
+          </button>
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             <li><a href="#" data-lang="en">EN</a></li>

docs/en/tour/06-https-client/index.html

@@ -4,6 +4,7 @@
   <meta charset="utf-8">
   <meta name="viewport" content="width=device-width, initial-scale=1">
   <title>HTTPS Client - cpp-httplib</title>
+  <link rel="icon" type="image/svg+xml" href="&#x2F;cpp-httplib/favicon.svg">
   <link rel="stylesheet" href="&#x2F;cpp-httplib/css/main.css">
   <script>
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@@ -19,14 +20,30 @@
       <a href="&#x2F;cpp-httplib/en/" class="header-title">cpp-httplib <span style="font-size:0.75em;font-weight:normal;margin-left:4px">v0.35.0</span></a>
       <div class="header-spacer"></div>
       <nav class="header-nav">
-        <a href="&#x2F;cpp-httplib/en/">Home</a>
-        <a href="&#x2F;cpp-httplib/en/tour/">Tour</a>
-        <a href="https://github.com/yhirose/cpp-httplib">GitHub</a>
+        <a href="&#x2F;cpp-httplib/en/">
+          <svg xmlns="http://www.w3.org/2000/svg" width="14" height="14" viewBox="0 0 24 24" fill="none" stroke="currentColor" stroke-width="2" stroke-linecap="round" stroke-linejoin="round"><path d="M3 9l9-7 9 7v11a2 2 0 0 1-2 2H5a2 2 0 0 1-2-2z"/><polyline points="9 22 9 12 15 12 15 22"/></svg>
+          Home
+        </a>
+        
+        
+        <a href="&#x2F;cpp-httplib/en/tour&#x2F;">Tour</a>
+        
+        
+        
+        <a href="https:&#x2F;&#x2F;github.com&#x2F;yhirose&#x2F;cpp-httplib" aria-label="GitHub">
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+          GitHub
+        </a>
+        
+        
       </nav>
       <div class="header-tools">
         <button class="theme-toggle" aria-label="Toggle theme"></button>
         <div class="lang-selector">
-          <button class="lang-btn" aria-label="Language">EN</button>
+          <button class="lang-btn" aria-label="Language">
+            <svg xmlns="http://www.w3.org/2000/svg" width="14" height="14" viewBox="0 0 24 24" fill="none" stroke="currentColor" stroke-width="2" stroke-linecap="round" stroke-linejoin="round"><circle cx="12" cy="12" r="10"/><line x1="2" y1="12" x2="22" y2="12"/><path d="M12 2a15.3 15.3 0 0 1 4 10 15.3 15.3 0 0 1-4 10 15.3 15.3 0 0 1-4-10 15.3 15.3 0 0 1 4-10z"/></svg>
+            EN
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           <ul class="lang-popup">
             
             <li><a href="#" data-lang="en">EN</a></li>

docs/en/tour/07-https-server/index.html

@@ -4,6 +4,7 @@
   <meta charset="utf-8">
   <meta name="viewport" content="width=device-width, initial-scale=1">
   <title>HTTPS Server - cpp-httplib</title>
+  <link rel="icon" type="image/svg+xml" href="&#x2F;cpp-httplib/favicon.svg">
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   <script>
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       <div class="header-spacer"></div>
       <nav class="header-nav">
-        <a href="&#x2F;cpp-httplib/en/">Home</a>
-        <a href="&#x2F;cpp-httplib/en/tour/">Tour</a>
-        <a href="https://github.com/yhirose/cpp-httplib">GitHub</a>
+        <a href="&#x2F;cpp-httplib/en/">
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+          Home
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-        <a href="&#x2F;cpp-httplib/en/">Home</a>
-        <a href="&#x2F;cpp-httplib/en/tour/">Tour</a>
-        <a href="https://github.com/yhirose/cpp-httplib">GitHub</a>
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+          GitHub
+        </a>
+        
+        
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+          <button class="lang-btn" aria-label="Language">
+            <svg xmlns="http://www.w3.org/2000/svg" width="14" height="14" viewBox="0 0 24 24" fill="none" stroke="currentColor" stroke-width="2" stroke-linecap="round" stroke-linejoin="round"><circle cx="12" cy="12" r="10"/><line x1="2" y1="12" x2="22" y2="12"/><path d="M12 2a15.3 15.3 0 0 1 4 10 15.3 15.3 0 0 1-4 10 15.3 15.3 0 0 1-4-10 15.3 15.3 0 0 1 4-10z"/></svg>
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+        </a>
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+            <svg xmlns="http://www.w3.org/2000/svg" width="14" height="14" viewBox="0 0 24 24" fill="none" stroke="currentColor" stroke-width="2" stroke-linecap="round" stroke-linejoin="round"><circle cx="12" cy="12" r="10"/><line x1="2" y1="12" x2="22" y2="12"/><path d="M12 2a15.3 15.3 0 0 1 4 10 15.3 15.3 0 0 1-4 10 15.3 15.3 0 0 1-4-10 15.3 15.3 0 0 1 4-10z"/></svg>
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+          GitHub
+        </a>
+        
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+            <svg xmlns="http://www.w3.org/2000/svg" width="14" height="14" viewBox="0 0 24 24" fill="none" stroke="currentColor" stroke-width="2" stroke-linecap="round" stroke-linejoin="round"><circle cx="12" cy="12" r="10"/><line x1="2" y1="12" x2="22" y2="12"/><path d="M12 2a15.3 15.3 0 0 1 4 10 15.3 15.3 0 0 1-4 10 15.3 15.3 0 0 1-4-10 15.3 15.3 0 0 1 4-10z"/></svg>
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+        </a>
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-        <a href="&#x2F;cpp-httplib/ja/">Home</a>
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-        <a href="https://github.com/yhirose/cpp-httplib">GitHub</a>
+        <a href="&#x2F;cpp-httplib/ja/">
+          <svg xmlns="http://www.w3.org/2000/svg" width="14" height="14" viewBox="0 0 24 24" fill="none" stroke="currentColor" stroke-width="2" stroke-linecap="round" stroke-linejoin="round"><path d="M3 9l9-7 9 7v11a2 2 0 0 1-2 2H5a2 2 0 0 1-2-2z"/><polyline points="9 22 9 12 15 12 15 22"/></svg>
+          Home
+        </a>
+        
+        
+        <a href="&#x2F;cpp-httplib/ja/tour&#x2F;">Tour</a>
+        
+        
+        
+        <a href="https:&#x2F;&#x2F;github.com&#x2F;yhirose&#x2F;cpp-httplib" aria-label="GitHub">
+          <svg xmlns="http://www.w3.org/2000/svg" width="16" height="16" viewBox="0 0 24 24" fill="none" stroke="currentColor" stroke-width="2" stroke-linecap="round" stroke-linejoin="round"><path d="M9 19c-5 1.5-5-2.5-7-3m14 6v-3.87a3.37 3.37 0 0 0-.94-2.61c3.14-.35 6.44-1.54 6.44-7A5.44 5.44 0 0 0 20 4.77 5.07 5.07 0 0 0 19.91 1S18.73.65 16 2.48a13.38 13.38 0 0 0-7 0C6.27.65 5.09 1 5.09 1A5.07 5.07 0 0 0 5 4.77a5.44 5.44 0 0 0-1.5 3.78c0 5.42 3.3 6.61 6.44 7A3.37 3.37 0 0 0 9 18.13V22"/></svg>
+          GitHub
+        </a>
+        
+        
       </nav>
       <div class="header-tools">
         <button class="theme-toggle" aria-label="Toggle theme"></button>
         <div class="lang-selector">
-          <button class="lang-btn" aria-label="Language">JA</button>
+          <button class="lang-btn" aria-label="Language">
+            <svg xmlns="http://www.w3.org/2000/svg" width="14" height="14" viewBox="0 0 24 24" fill="none" stroke="currentColor" stroke-width="2" stroke-linecap="round" stroke-linejoin="round"><circle cx="12" cy="12" r="10"/><line x1="2" y1="12" x2="22" y2="12"/><path d="M12 2a15.3 15.3 0 0 1 4 10 15.3 15.3 0 0 1-4 10 15.3 15.3 0 0 1-4-10 15.3 15.3 0 0 1 4-10z"/></svg>
+            JA
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docs/ja/tour/03-basic-server/index.html

@@ -4,6 +4,7 @@
   <meta charset="utf-8">
   <meta name="viewport" content="width=device-width, initial-scale=1">
   <title>Basic Server - cpp-httplib</title>
+  <link rel="icon" type="image/svg+xml" href="&#x2F;cpp-httplib/favicon.svg">
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   <script>
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@@ -19,14 +20,30 @@
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       <div class="header-spacer"></div>
       <nav class="header-nav">
-        <a href="&#x2F;cpp-httplib/ja/">Home</a>
-        <a href="&#x2F;cpp-httplib/ja/tour/">Tour</a>
-        <a href="https://github.com/yhirose/cpp-httplib">GitHub</a>
+        <a href="&#x2F;cpp-httplib/ja/">
+          <svg xmlns="http://www.w3.org/2000/svg" width="14" height="14" viewBox="0 0 24 24" fill="none" stroke="currentColor" stroke-width="2" stroke-linecap="round" stroke-linejoin="round"><path d="M3 9l9-7 9 7v11a2 2 0 0 1-2 2H5a2 2 0 0 1-2-2z"/><polyline points="9 22 9 12 15 12 15 22"/></svg>
+          Home
+        </a>
+        
+        
+        <a href="&#x2F;cpp-httplib/ja/tour&#x2F;">Tour</a>
+        
+        
+        
+        <a href="https:&#x2F;&#x2F;github.com&#x2F;yhirose&#x2F;cpp-httplib" aria-label="GitHub">
+          <svg xmlns="http://www.w3.org/2000/svg" width="16" height="16" viewBox="0 0 24 24" fill="none" stroke="currentColor" stroke-width="2" stroke-linecap="round" stroke-linejoin="round"><path d="M9 19c-5 1.5-5-2.5-7-3m14 6v-3.87a3.37 3.37 0 0 0-.94-2.61c3.14-.35 6.44-1.54 6.44-7A5.44 5.44 0 0 0 20 4.77 5.07 5.07 0 0 0 19.91 1S18.73.65 16 2.48a13.38 13.38 0 0 0-7 0C6.27.65 5.09 1 5.09 1A5.07 5.07 0 0 0 5 4.77a5.44 5.44 0 0 0-1.5 3.78c0 5.42 3.3 6.61 6.44 7A3.37 3.37 0 0 0 9 18.13V22"/></svg>
+          GitHub
+        </a>
+        
+        
       </nav>
       <div class="header-tools">
         <button class="theme-toggle" aria-label="Toggle theme"></button>
         <div class="lang-selector">
-          <button class="lang-btn" aria-label="Language">JA</button>
+          <button class="lang-btn" aria-label="Language">
+            <svg xmlns="http://www.w3.org/2000/svg" width="14" height="14" viewBox="0 0 24 24" fill="none" stroke="currentColor" stroke-width="2" stroke-linecap="round" stroke-linejoin="round"><circle cx="12" cy="12" r="10"/><line x1="2" y1="12" x2="22" y2="12"/><path d="M12 2a15.3 15.3 0 0 1 4 10 15.3 15.3 0 0 1-4 10 15.3 15.3 0 0 1-4-10 15.3 15.3 0 0 1 4-10z"/></svg>
+            JA
+          </button>
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             <li><a href="#" data-lang="en">EN</a></li>

docs/ja/tour/04-static-file-server/index.html

@@ -4,6 +4,7 @@
   <meta charset="utf-8">
   <meta name="viewport" content="width=device-width, initial-scale=1">
   <title>Static File Server - cpp-httplib</title>
+  <link rel="icon" type="image/svg+xml" href="&#x2F;cpp-httplib/favicon.svg">
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   <script>
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@@ -19,14 +20,30 @@
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       <div class="header-spacer"></div>
       <nav class="header-nav">
-        <a href="&#x2F;cpp-httplib/ja/">Home</a>
-        <a href="&#x2F;cpp-httplib/ja/tour/">Tour</a>
-        <a href="https://github.com/yhirose/cpp-httplib">GitHub</a>
+        <a href="&#x2F;cpp-httplib/ja/">
+          <svg xmlns="http://www.w3.org/2000/svg" width="14" height="14" viewBox="0 0 24 24" fill="none" stroke="currentColor" stroke-width="2" stroke-linecap="round" stroke-linejoin="round"><path d="M3 9l9-7 9 7v11a2 2 0 0 1-2 2H5a2 2 0 0 1-2-2z"/><polyline points="9 22 9 12 15 12 15 22"/></svg>
+          Home
+        </a>
+        
+        
+        <a href="&#x2F;cpp-httplib/ja/tour&#x2F;">Tour</a>
+        
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+        
+        <a href="https:&#x2F;&#x2F;github.com&#x2F;yhirose&#x2F;cpp-httplib" aria-label="GitHub">
+          <svg xmlns="http://www.w3.org/2000/svg" width="16" height="16" viewBox="0 0 24 24" fill="none" stroke="currentColor" stroke-width="2" stroke-linecap="round" stroke-linejoin="round"><path d="M9 19c-5 1.5-5-2.5-7-3m14 6v-3.87a3.37 3.37 0 0 0-.94-2.61c3.14-.35 6.44-1.54 6.44-7A5.44 5.44 0 0 0 20 4.77 5.07 5.07 0 0 0 19.91 1S18.73.65 16 2.48a13.38 13.38 0 0 0-7 0C6.27.65 5.09 1 5.09 1A5.07 5.07 0 0 0 5 4.77a5.44 5.44 0 0 0-1.5 3.78c0 5.42 3.3 6.61 6.44 7A3.37 3.37 0 0 0 9 18.13V22"/></svg>
+          GitHub
+        </a>
+        
+        
       </nav>
       <div class="header-tools">
         <button class="theme-toggle" aria-label="Toggle theme"></button>
         <div class="lang-selector">
-          <button class="lang-btn" aria-label="Language">JA</button>
+          <button class="lang-btn" aria-label="Language">
+            <svg xmlns="http://www.w3.org/2000/svg" width="14" height="14" viewBox="0 0 24 24" fill="none" stroke="currentColor" stroke-width="2" stroke-linecap="round" stroke-linejoin="round"><circle cx="12" cy="12" r="10"/><line x1="2" y1="12" x2="22" y2="12"/><path d="M12 2a15.3 15.3 0 0 1 4 10 15.3 15.3 0 0 1-4 10 15.3 15.3 0 0 1-4-10 15.3 15.3 0 0 1 4-10z"/></svg>
+            JA
+          </button>
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             <li><a href="#" data-lang="en">EN</a></li>

docs/ja/tour/05-tls-setup/index.html

@@ -4,6 +4,7 @@
   <meta charset="utf-8">
   <meta name="viewport" content="width=device-width, initial-scale=1">
   <title>TLS Setup - cpp-httplib</title>
+  <link rel="icon" type="image/svg+xml" href="&#x2F;cpp-httplib/favicon.svg">
   <link rel="stylesheet" href="&#x2F;cpp-httplib/css/main.css">
   <script>
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@@ -19,14 +20,30 @@
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       <div class="header-spacer"></div>
       <nav class="header-nav">
-        <a href="&#x2F;cpp-httplib/ja/">Home</a>
-        <a href="&#x2F;cpp-httplib/ja/tour/">Tour</a>
-        <a href="https://github.com/yhirose/cpp-httplib">GitHub</a>
+        <a href="&#x2F;cpp-httplib/ja/">
+          <svg xmlns="http://www.w3.org/2000/svg" width="14" height="14" viewBox="0 0 24 24" fill="none" stroke="currentColor" stroke-width="2" stroke-linecap="round" stroke-linejoin="round"><path d="M3 9l9-7 9 7v11a2 2 0 0 1-2 2H5a2 2 0 0 1-2-2z"/><polyline points="9 22 9 12 15 12 15 22"/></svg>
+          Home
+        </a>
+        
+        
+        <a href="&#x2F;cpp-httplib/ja/tour&#x2F;">Tour</a>
+        
+        
+        
+        <a href="https:&#x2F;&#x2F;github.com&#x2F;yhirose&#x2F;cpp-httplib" aria-label="GitHub">
+          <svg xmlns="http://www.w3.org/2000/svg" width="16" height="16" viewBox="0 0 24 24" fill="none" stroke="currentColor" stroke-width="2" stroke-linecap="round" stroke-linejoin="round"><path d="M9 19c-5 1.5-5-2.5-7-3m14 6v-3.87a3.37 3.37 0 0 0-.94-2.61c3.14-.35 6.44-1.54 6.44-7A5.44 5.44 0 0 0 20 4.77 5.07 5.07 0 0 0 19.91 1S18.73.65 16 2.48a13.38 13.38 0 0 0-7 0C6.27.65 5.09 1 5.09 1A5.07 5.07 0 0 0 5 4.77a5.44 5.44 0 0 0-1.5 3.78c0 5.42 3.3 6.61 6.44 7A3.37 3.37 0 0 0 9 18.13V22"/></svg>
+          GitHub
+        </a>
+        
+        
       </nav>
       <div class="header-tools">
         <button class="theme-toggle" aria-label="Toggle theme"></button>
         <div class="lang-selector">
-          <button class="lang-btn" aria-label="Language">JA</button>
+          <button class="lang-btn" aria-label="Language">
+            <svg xmlns="http://www.w3.org/2000/svg" width="14" height="14" viewBox="0 0 24 24" fill="none" stroke="currentColor" stroke-width="2" stroke-linecap="round" stroke-linejoin="round"><circle cx="12" cy="12" r="10"/><line x1="2" y1="12" x2="22" y2="12"/><path d="M12 2a15.3 15.3 0 0 1 4 10 15.3 15.3 0 0 1-4 10 15.3 15.3 0 0 1-4-10 15.3 15.3 0 0 1 4-10z"/></svg>
+            JA
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             <li><a href="#" data-lang="en">EN</a></li>

docs/ja/tour/06-https-client/index.html

@@ -4,6 +4,7 @@
   <meta charset="utf-8">
   <meta name="viewport" content="width=device-width, initial-scale=1">
   <title>HTTPS Client - cpp-httplib</title>
+  <link rel="icon" type="image/svg+xml" href="&#x2F;cpp-httplib/favicon.svg">
   <link rel="stylesheet" href="&#x2F;cpp-httplib/css/main.css">
   <script>
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@@ -19,14 +20,30 @@
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       <div class="header-spacer"></div>
       <nav class="header-nav">
-        <a href="&#x2F;cpp-httplib/ja/">Home</a>
-        <a href="&#x2F;cpp-httplib/ja/tour/">Tour</a>
-        <a href="https://github.com/yhirose/cpp-httplib">GitHub</a>
+        <a href="&#x2F;cpp-httplib/ja/">
+          <svg xmlns="http://www.w3.org/2000/svg" width="14" height="14" viewBox="0 0 24 24" fill="none" stroke="currentColor" stroke-width="2" stroke-linecap="round" stroke-linejoin="round"><path d="M3 9l9-7 9 7v11a2 2 0 0 1-2 2H5a2 2 0 0 1-2-2z"/><polyline points="9 22 9 12 15 12 15 22"/></svg>
+          Home
+        </a>
+        
+        
+        <a href="&#x2F;cpp-httplib/ja/tour&#x2F;">Tour</a>
+        
+        
+        
+        <a href="https:&#x2F;&#x2F;github.com&#x2F;yhirose&#x2F;cpp-httplib" aria-label="GitHub">
+          <svg xmlns="http://www.w3.org/2000/svg" width="16" height="16" viewBox="0 0 24 24" fill="none" stroke="currentColor" stroke-width="2" stroke-linecap="round" stroke-linejoin="round"><path d="M9 19c-5 1.5-5-2.5-7-3m14 6v-3.87a3.37 3.37 0 0 0-.94-2.61c3.14-.35 6.44-1.54 6.44-7A5.44 5.44 0 0 0 20 4.77 5.07 5.07 0 0 0 19.91 1S18.73.65 16 2.48a13.38 13.38 0 0 0-7 0C6.27.65 5.09 1 5.09 1A5.07 5.07 0 0 0 5 4.77a5.44 5.44 0 0 0-1.5 3.78c0 5.42 3.3 6.61 6.44 7A3.37 3.37 0 0 0 9 18.13V22"/></svg>
+          GitHub
+        </a>
+        
+        
       </nav>
       <div class="header-tools">
         <button class="theme-toggle" aria-label="Toggle theme"></button>
         <div class="lang-selector">
-          <button class="lang-btn" aria-label="Language">JA</button>
+          <button class="lang-btn" aria-label="Language">
+            <svg xmlns="http://www.w3.org/2000/svg" width="14" height="14" viewBox="0 0 24 24" fill="none" stroke="currentColor" stroke-width="2" stroke-linecap="round" stroke-linejoin="round"><circle cx="12" cy="12" r="10"/><line x1="2" y1="12" x2="22" y2="12"/><path d="M12 2a15.3 15.3 0 0 1 4 10 15.3 15.3 0 0 1-4 10 15.3 15.3 0 0 1-4-10 15.3 15.3 0 0 1 4-10z"/></svg>
+            JA
+          </button>
           <ul class="lang-popup">
             
             <li><a href="#" data-lang="en">EN</a></li>

docs/ja/tour/07-https-server/index.html

@@ -4,6 +4,7 @@
   <meta charset="utf-8">
   <meta name="viewport" content="width=device-width, initial-scale=1">
   <title>HTTPS Server - cpp-httplib</title>
+  <link rel="icon" type="image/svg+xml" href="&#x2F;cpp-httplib/favicon.svg">
   <link rel="stylesheet" href="&#x2F;cpp-httplib/css/main.css">
   <script>
     (function() {
@@ -19,14 +20,30 @@
       <a href="&#x2F;cpp-httplib/ja/" class="header-title">cpp-httplib <span style="font-size:0.75em;font-weight:normal;margin-left:4px">v0.35.0</span></a>
       <div class="header-spacer"></div>
       <nav class="header-nav">
-        <a href="&#x2F;cpp-httplib/ja/">Home</a>
-        <a href="&#x2F;cpp-httplib/ja/tour/">Tour</a>
-        <a href="https://github.com/yhirose/cpp-httplib">GitHub</a>
+        <a href="&#x2F;cpp-httplib/ja/">
+          <svg xmlns="http://www.w3.org/2000/svg" width="14" height="14" viewBox="0 0 24 24" fill="none" stroke="currentColor" stroke-width="2" stroke-linecap="round" stroke-linejoin="round"><path d="M3 9l9-7 9 7v11a2 2 0 0 1-2 2H5a2 2 0 0 1-2-2z"/><polyline points="9 22 9 12 15 12 15 22"/></svg>
+          Home
+        </a>
+        
+        
+        <a href="&#x2F;cpp-httplib/ja/tour&#x2F;">Tour</a>
+        
+        
+        
+        <a href="https:&#x2F;&#x2F;github.com&#x2F;yhirose&#x2F;cpp-httplib" aria-label="GitHub">
+          <svg xmlns="http://www.w3.org/2000/svg" width="16" height="16" viewBox="0 0 24 24" fill="none" stroke="currentColor" stroke-width="2" stroke-linecap="round" stroke-linejoin="round"><path d="M9 19c-5 1.5-5-2.5-7-3m14 6v-3.87a3.37 3.37 0 0 0-.94-2.61c3.14-.35 6.44-1.54 6.44-7A5.44 5.44 0 0 0 20 4.77 5.07 5.07 0 0 0 19.91 1S18.73.65 16 2.48a13.38 13.38 0 0 0-7 0C6.27.65 5.09 1 5.09 1A5.07 5.07 0 0 0 5 4.77a5.44 5.44 0 0 0-1.5 3.78c0 5.42 3.3 6.61 6.44 7A3.37 3.37 0 0 0 9 18.13V22"/></svg>
+          GitHub
+        </a>
+        
+        
       </nav>
       <div class="header-tools">
         <button class="theme-toggle" aria-label="Toggle theme"></button>
         <div class="lang-selector">
-          <button class="lang-btn" aria-label="Language">JA</button>
+          <button class="lang-btn" aria-label="Language">
+            <svg xmlns="http://www.w3.org/2000/svg" width="14" height="14" viewBox="0 0 24 24" fill="none" stroke="currentColor" stroke-width="2" stroke-linecap="round" stroke-linejoin="round"><circle cx="12" cy="12" r="10"/><line x1="2" y1="12" x2="22" y2="12"/><path d="M12 2a15.3 15.3 0 0 1 4 10 15.3 15.3 0 0 1-4 10 15.3 15.3 0 0 1-4-10 15.3 15.3 0 0 1 4-10z"/></svg>
+            JA
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             <li><a href="#" data-lang="en">EN</a></li>

docs/ja/tour/08-websocket/index.html

@@ -4,6 +4,7 @@
   <meta charset="utf-8">
   <meta name="viewport" content="width=device-width, initial-scale=1">
   <title>WebSocket - cpp-httplib</title>
+  <link rel="icon" type="image/svg+xml" href="&#x2F;cpp-httplib/favicon.svg">
   <link rel="stylesheet" href="&#x2F;cpp-httplib/css/main.css">
   <script>
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@@ -19,14 +20,30 @@
       <a href="&#x2F;cpp-httplib/ja/" class="header-title">cpp-httplib <span style="font-size:0.75em;font-weight:normal;margin-left:4px">v0.35.0</span></a>
       <div class="header-spacer"></div>
       <nav class="header-nav">
-        <a href="&#x2F;cpp-httplib/ja/">Home</a>
-        <a href="&#x2F;cpp-httplib/ja/tour/">Tour</a>
-        <a href="https://github.com/yhirose/cpp-httplib">GitHub</a>
+        <a href="&#x2F;cpp-httplib/ja/">
+          <svg xmlns="http://www.w3.org/2000/svg" width="14" height="14" viewBox="0 0 24 24" fill="none" stroke="currentColor" stroke-width="2" stroke-linecap="round" stroke-linejoin="round"><path d="M3 9l9-7 9 7v11a2 2 0 0 1-2 2H5a2 2 0 0 1-2-2z"/><polyline points="9 22 9 12 15 12 15 22"/></svg>
+          Home
+        </a>
+        
+        
+        <a href="&#x2F;cpp-httplib/ja/tour&#x2F;">Tour</a>
+        
+        
+        
+        <a href="https:&#x2F;&#x2F;github.com&#x2F;yhirose&#x2F;cpp-httplib" aria-label="GitHub">
+          <svg xmlns="http://www.w3.org/2000/svg" width="16" height="16" viewBox="0 0 24 24" fill="none" stroke="currentColor" stroke-width="2" stroke-linecap="round" stroke-linejoin="round"><path d="M9 19c-5 1.5-5-2.5-7-3m14 6v-3.87a3.37 3.37 0 0 0-.94-2.61c3.14-.35 6.44-1.54 6.44-7A5.44 5.44 0 0 0 20 4.77 5.07 5.07 0 0 0 19.91 1S18.73.65 16 2.48a13.38 13.38 0 0 0-7 0C6.27.65 5.09 1 5.09 1A5.07 5.07 0 0 0 5 4.77a5.44 5.44 0 0 0-1.5 3.78c0 5.42 3.3 6.61 6.44 7A3.37 3.37 0 0 0 9 18.13V22"/></svg>
+          GitHub
+        </a>
+        
+        
       </nav>
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         <button class="theme-toggle" aria-label="Toggle theme"></button>
         <div class="lang-selector">
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+          <button class="lang-btn" aria-label="Language">
+            <svg xmlns="http://www.w3.org/2000/svg" width="14" height="14" viewBox="0 0 24 24" fill="none" stroke="currentColor" stroke-width="2" stroke-linecap="round" stroke-linejoin="round"><circle cx="12" cy="12" r="10"/><line x1="2" y1="12" x2="22" y2="12"/><path d="M12 2a15.3 15.3 0 0 1 4 10 15.3 15.3 0 0 1-4 10 15.3 15.3 0 0 1-4-10 15.3 15.3 0 0 1 4-10z"/></svg>
+            JA
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docs/ja/tour/09-whats-next/index.html

@@ -4,6 +4,7 @@
   <meta charset="utf-8">
   <meta name="viewport" content="width=device-width, initial-scale=1">
   <title>What&#x27;s Next - cpp-httplib</title>
+  <link rel="icon" type="image/svg+xml" href="&#x2F;cpp-httplib/favicon.svg">
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     (function() {
@@ -19,14 +20,30 @@
       <a href="&#x2F;cpp-httplib/ja/" class="header-title">cpp-httplib <span style="font-size:0.75em;font-weight:normal;margin-left:4px">v0.35.0</span></a>
       <div class="header-spacer"></div>
       <nav class="header-nav">
-        <a href="&#x2F;cpp-httplib/ja/">Home</a>
-        <a href="&#x2F;cpp-httplib/ja/tour/">Tour</a>
-        <a href="https://github.com/yhirose/cpp-httplib">GitHub</a>
+        <a href="&#x2F;cpp-httplib/ja/">
+          <svg xmlns="http://www.w3.org/2000/svg" width="14" height="14" viewBox="0 0 24 24" fill="none" stroke="currentColor" stroke-width="2" stroke-linecap="round" stroke-linejoin="round"><path d="M3 9l9-7 9 7v11a2 2 0 0 1-2 2H5a2 2 0 0 1-2-2z"/><polyline points="9 22 9 12 15 12 15 22"/></svg>
+          Home
+        </a>
+        
+        
+        <a href="&#x2F;cpp-httplib/ja/tour&#x2F;">Tour</a>
+        
+        
+        
+        <a href="https:&#x2F;&#x2F;github.com&#x2F;yhirose&#x2F;cpp-httplib" aria-label="GitHub">
+          <svg xmlns="http://www.w3.org/2000/svg" width="16" height="16" viewBox="0 0 24 24" fill="none" stroke="currentColor" stroke-width="2" stroke-linecap="round" stroke-linejoin="round"><path d="M9 19c-5 1.5-5-2.5-7-3m14 6v-3.87a3.37 3.37 0 0 0-.94-2.61c3.14-.35 6.44-1.54 6.44-7A5.44 5.44 0 0 0 20 4.77 5.07 5.07 0 0 0 19.91 1S18.73.65 16 2.48a13.38 13.38 0 0 0-7 0C6.27.65 5.09 1 5.09 1A5.07 5.07 0 0 0 5 4.77a5.44 5.44 0 0 0-1.5 3.78c0 5.42 3.3 6.61 6.44 7A3.37 3.37 0 0 0 9 18.13V22"/></svg>
+          GitHub
+        </a>
+        
+        
       </nav>
       <div class="header-tools">
         <button class="theme-toggle" aria-label="Toggle theme"></button>
         <div class="lang-selector">
-          <button class="lang-btn" aria-label="Language">JA</button>
+          <button class="lang-btn" aria-label="Language">
+            <svg xmlns="http://www.w3.org/2000/svg" width="14" height="14" viewBox="0 0 24 24" fill="none" stroke="currentColor" stroke-width="2" stroke-linecap="round" stroke-linejoin="round"><circle cx="12" cy="12" r="10"/><line x1="2" y1="12" x2="22" y2="12"/><path d="M12 2a15.3 15.3 0 0 1 4 10 15.3 15.3 0 0 1-4 10 15.3 15.3 0 0 1-4-10 15.3 15.3 0 0 1 4-10z"/></svg>
+            JA
+          </button>
           <ul class="lang-popup">
             
             <li><a href="#" data-lang="en">EN</a></li>

docs/ja/tour/index.html

@@ -4,6 +4,7 @@
   <meta charset="utf-8">
   <meta name="viewport" content="width=device-width, initial-scale=1">
   <title>A Tour of cpp-httplib - cpp-httplib</title>
+  <link rel="icon" type="image/svg+xml" href="&#x2F;cpp-httplib/favicon.svg">
   <link rel="stylesheet" href="&#x2F;cpp-httplib/css/main.css">
   <script>
     (function() {
@@ -19,14 +20,30 @@
       <a href="&#x2F;cpp-httplib/ja/" class="header-title">cpp-httplib <span style="font-size:0.75em;font-weight:normal;margin-left:4px">v0.35.0</span></a>
       <div class="header-spacer"></div>
       <nav class="header-nav">
-        <a href="&#x2F;cpp-httplib/ja/">Home</a>
-        <a href="&#x2F;cpp-httplib/ja/tour/">Tour</a>
-        <a href="https://github.com/yhirose/cpp-httplib">GitHub</a>
+        <a href="&#x2F;cpp-httplib/ja/">
+          <svg xmlns="http://www.w3.org/2000/svg" width="14" height="14" viewBox="0 0 24 24" fill="none" stroke="currentColor" stroke-width="2" stroke-linecap="round" stroke-linejoin="round"><path d="M3 9l9-7 9 7v11a2 2 0 0 1-2 2H5a2 2 0 0 1-2-2z"/><polyline points="9 22 9 12 15 12 15 22"/></svg>
+          Home
+        </a>
+        
+        
+        <a href="&#x2F;cpp-httplib/ja/tour&#x2F;">Tour</a>
+        
+        
+        
+        <a href="https:&#x2F;&#x2F;github.com&#x2F;yhirose&#x2F;cpp-httplib" aria-label="GitHub">
+          <svg xmlns="http://www.w3.org/2000/svg" width="16" height="16" viewBox="0 0 24 24" fill="none" stroke="currentColor" stroke-width="2" stroke-linecap="round" stroke-linejoin="round"><path d="M9 19c-5 1.5-5-2.5-7-3m14 6v-3.87a3.37 3.37 0 0 0-.94-2.61c3.14-.35 6.44-1.54 6.44-7A5.44 5.44 0 0 0 20 4.77 5.07 5.07 0 0 0 19.91 1S18.73.65 16 2.48a13.38 13.38 0 0 0-7 0C6.27.65 5.09 1 5.09 1A5.07 5.07 0 0 0 5 4.77a5.44 5.44 0 0 0-1.5 3.78c0 5.42 3.3 6.61 6.44 7A3.37 3.37 0 0 0 9 18.13V22"/></svg>
+          GitHub
+        </a>
+        
+        
       </nav>
       <div class="header-tools">
         <button class="theme-toggle" aria-label="Toggle theme"></button>
         <div class="lang-selector">
-          <button class="lang-btn" aria-label="Language">JA</button>
+          <button class="lang-btn" aria-label="Language">
+            <svg xmlns="http://www.w3.org/2000/svg" width="14" height="14" viewBox="0 0 24 24" fill="none" stroke="currentColor" stroke-width="2" stroke-linecap="round" stroke-linejoin="round"><circle cx="12" cy="12" r="10"/><line x1="2" y1="12" x2="22" y2="12"/><path d="M12 2a15.3 15.3 0 0 1 4 10 15.3 15.3 0 0 1-4 10 15.3 15.3 0 0 1-4-10 15.3 15.3 0 0 1 4-10z"/></svg>
+            JA
+          </button>
           <ul class="lang-popup">
             
             <li><a href="#" data-lang="en">EN</a></li>

docs/js/main.js

@@ -33,6 +33,10 @@
   var btn = document.querySelector('.theme-toggle');
   if (!btn) return;
 
+  // Feather Icons: sun (light mode) and moon (dark mode)
+  var sunSVG = '<svg xmlns="http://www.w3.org/2000/svg" width="16" height="16" viewBox="0 0 24 24" fill="none" stroke="currentColor" stroke-width="2" stroke-linecap="round" stroke-linejoin="round"><circle cx="12" cy="12" r="5"/><line x1="12" y1="1" x2="12" y2="3"/><line x1="12" y1="21" x2="12" y2="23"/><line x1="4.22" y1="4.22" x2="5.64" y2="5.64"/><line x1="18.36" y1="18.36" x2="19.78" y2="19.78"/><line x1="1" y1="12" x2="3" y2="12"/><line x1="21" y1="12" x2="23" y2="12"/><line x1="4.22" y1="19.78" x2="5.64" y2="18.36"/><line x1="18.36" y1="5.64" x2="19.78" y2="4.22"/></svg>';
+  var moonSVG = '<svg xmlns="http://www.w3.org/2000/svg" width="16" height="16" viewBox="0 0 24 24" fill="none" stroke="currentColor" stroke-width="2" stroke-linecap="round" stroke-linejoin="round"><path d="M21 12.79A9 9 0 1 1 11.21 3 7 7 0 0 0 21 12.79z"/></svg>';
+
   function getTheme() {
     var stored = localStorage.getItem('preferred-theme');
     if (stored) return stored;
@@ -45,7 +49,7 @@
     } else {
       document.documentElement.removeAttribute('data-theme');
     }
-    btn.textContent = theme === 'light' ? '\u2600\uFE0F' : '\uD83C\uDF19';
+    btn.innerHTML = theme === 'light' ? sunSVG : moonSVG;
   }
 
   applyTheme(getTheme());

justfile

@@ -46,10 +46,10 @@ bench:
     @(cd benchmark && make bench-all)
 
 docs:
-    cargo build --release --manifest-path docs-gen/Cargo.toml
-    ./docs-gen/target/release/docs-gen build docs-src --out docs
+    @cargo build --release --manifest-path docs-gen/Cargo.toml
+    @./docs-gen/target/release/docs-gen build docs-src --out docs
+
+docs-serve:
+    @cargo build --release --manifest-path docs-gen/Cargo.toml
+    -@./docs-gen/target/release/docs-gen serve docs-src --open
 
-docs-test:
-    cargo build --release --manifest-path docs-gen/Cargo.toml
-    ./docs-gen/target/release/docs-gen build docs-src --out test/cpp-httplib
-    cd test && python3 -m http.server