From 7db736e4187f50ed97c2277e307eb66e2801f61f Mon Sep 17 00:00:00 2001
From: Wind-Explorer <windexplorer@outlook.com>
Date: Sat, 1 Aug 2026 02:28:58 +0800
Subject: [PATCH] friends list CRD

---
 Cargo.lock                                    | 756 +++++++++++++++++-
 src-tauri/Cargo.toml                          |   1 +
 .../20260731000000_create_friends.sql         |   4 +
 src-tauri/src/db/mod.rs                       |  48 ++
 src-tauri/src/friends/mod.rs                  |  63 ++
 src-tauri/src/lib.rs                          |  17 +-
 src/lib/bindings.ts                           |  15 +-
 7 files changed, 895 insertions(+), 9 deletions(-)
 create mode 100644 src-tauri/migrations/20260731000000_create_friends.sql
 create mode 100644 src-tauri/src/db/mod.rs
 create mode 100644 src-tauri/src/friends/mod.rs

diff --git a/Cargo.lock b/Cargo.lock
index fb4068b..33b44fa 100644
--- a/Cargo.lock
+++ b/Cargo.lock
@@ -38,6 +38,12 @@ dependencies = [
  "alloc-no-stdlib",
 ]
 
+[[package]]
+name = "allocator-api2"
+version = "0.2.21"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "683d7910e743518b0e34f1186f92494becacb047c7b6bf616c96772180fef923"
+
 [[package]]
 name = "android_system_properties"
 version = "0.1.5"
@@ -207,6 +213,15 @@ dependencies = [
  "system-deps",
 ]
 
+[[package]]
+name = "atoi"
+version = "2.0.0"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "f28d99ec8bfea296261ca1af174f24225171fea9664ba9003cbebee704810528"
+dependencies = [
+ "num-traits",
+]
+
 [[package]]
 name = "atomic-waker"
 version = "1.1.2"
@@ -283,6 +298,12 @@ version = "0.22.1"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "72b3254f16251a8381aa12e40e3c4d2f0199f8c6508fbecb9d91f575e0fbb8c6"
 
+[[package]]
+name = "base64ct"
+version = "1.8.3"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "2af50177e190e07a26ab74f8b1efbfe2ef87da2116221318cb1c2e82baf7de06"
+
 [[package]]
 name = "bit-set"
 version = "0.8.0"
@@ -551,6 +572,12 @@ dependencies = [
  "crossbeam-utils",
 ]
 
+[[package]]
+name = "const-oid"
+version = "0.9.6"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "c2459377285ad874054d797f3ccebf984978aa39129f6eafde5cdc8315b612f8"
+
 [[package]]
 name = "cookie"
 version = "0.18.1"
@@ -629,6 +656,21 @@ dependencies = [
  "libc",
 ]
 
+[[package]]
+name = "crc"
+version = "3.4.0"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "5eb8a2a1cd12ab0d987a5d5e825195d372001a4094a0376319d5a0ad71c1ba0d"
+dependencies = [
+ "crc-catalog",
+]
+
+[[package]]
+name = "crc-catalog"
+version = "2.5.0"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "217698eaf96b4a3f0bc4f3662aaa55bdf913cd54d7204591faa790070c6d0853"
+
 [[package]]
 name = "crc32fast"
 version = "1.5.0"
@@ -647,6 +689,15 @@ dependencies = [
  "crossbeam-utils",
 ]
 
+[[package]]
+name = "crossbeam-queue"
+version = "0.3.13"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "803d13fb3b09d88be9f4dbc29062c66b19bf7170867ceb746d2a8689bf6c7a26"
+dependencies = [
+ "crossbeam-utils",
+]
+
 [[package]]
 name = "crossbeam-utils"
 version = "0.8.21"
@@ -783,6 +834,17 @@ dependencies = [
  "windows-sys 0.61.2",
 ]
 
+[[package]]
+name = "der"
+version = "0.7.10"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "e7c1832837b905bbfb5101e07cc24c8deddf52f93225eee6ead5f4d63d53ddcb"
+dependencies = [
+ "const-oid",
+ "pem-rfc7468",
+ "zeroize",
+]
+
 [[package]]
 name = "deranged"
 version = "0.5.8"
@@ -835,7 +897,9 @@ source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "9ed9a281f7bc9b7576e61468ba615a66a5c8cfdff42420a70aa82701a3b1e292"
 dependencies = [
  "block-buffer 0.10.4",
+ "const-oid",
  "crypto-common 0.1.7",
+ "subtle",
 ]
 
 [[package]]
@@ -923,13 +987,19 @@ checksum = "521e380c0c8afb8d9a1e83a1822ee03556fc3e3e7dbc1fd30be14e37f9cb3f89"
 dependencies = [
  "bit-set",
  "cssparser",
- "foldhash",
+ "foldhash 0.2.0",
  "html5ever",
  "precomputed-hash",
  "selectors",
  "tendril",
 ]
 
+[[package]]
+name = "dotenvy"
+version = "0.15.7"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "1aaf95b3e5c8f23aa320147307562d361db0ae0d51242340f558153b4eb2439b"
+
 [[package]]
 name = "dpi"
 version = "0.1.2"
@@ -987,7 +1057,7 @@ version = "3.0.0"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "29fcf32e6c73d1079f83ab4d782de2d81620346a5f38c6237a86a22f8368980a"
 dependencies = [
- "signature",
+ "signature 3.0.0",
 ]
 
 [[package]]
@@ -1003,6 +1073,15 @@ dependencies = [
  "zeroize",
 ]
 
+[[package]]
+name = "either"
+version = "1.17.0"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "9e5e8f6c15a24b9a3ee5efec809ccd006d3b30e8b3bb63c39af737c7f87daa1d"
+dependencies = [
+ "serde",
+]
+
 [[package]]
 name = "embed-resource"
 version = "3.0.9"
@@ -1077,6 +1156,17 @@ dependencies = [
  "windows-sys 0.61.2",
 ]
 
+[[package]]
+name = "etcetera"
+version = "0.8.0"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "136d1b5283a1ab77bd9257427ffd09d8667ced0570b6f938942bc7568ed5b943"
+dependencies = [
+ "cfg-if",
+ "home",
+ "windows-sys 0.48.0",
+]
+
 [[package]]
 name = "event-listener"
 version = "5.4.1"
@@ -1145,12 +1235,29 @@ dependencies = [
  "miniz_oxide",
 ]
 
+[[package]]
+name = "flume"
+version = "0.11.1"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "da0e4dd2a88388a1f4ccc7c9ce104604dab68d9f408dc34cd45823d5a9069095"
+dependencies = [
+ "futures-core",
+ "futures-sink",
+ "spin",
+]
+
 [[package]]
 name = "fnv"
 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 = "foldhash"
 version = "0.2.0"
@@ -1200,6 +1307,7 @@ source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "07bbe89c50d7a535e539b8c17bc0b49bdb77747034daa8087407d655f3f7cc1d"
 dependencies = [
  "futures-core",
+ "futures-sink",
 ]
 
 [[package]]
@@ -1219,6 +1327,17 @@ dependencies = [
  "futures-util",
 ]
 
+[[package]]
+name = "futures-intrusive"
+version = "0.5.0"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "1d930c203dd0b6ff06e0201a4a2fe9149b43c684fd4420555b26d21b1a02956f"
+dependencies = [
+ "futures-core",
+ "lock_api",
+ "parking_lot",
+]
+
 [[package]]
 name = "futures-io"
 version = "0.3.32"
@@ -1574,12 +1693,32 @@ version = "0.12.3"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "8a9ee70c43aaf417c914396645a0fa852624801b24ebb7ae78fe8272889ac888"
 
+[[package]]
+name = "hashbrown"
+version = "0.15.5"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "9229cfe53dfd69f0609a49f65461bd93001ea1ef889cd5529dd176593f5338a1"
+dependencies = [
+ "allocator-api2",
+ "equivalent",
+ "foldhash 0.1.5",
+]
+
 [[package]]
 name = "hashbrown"
 version = "0.17.1"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "ed5909b6e89a2db4456e54cd5f673791d7eca6732202bbf2a9cc504fe2f9b84a"
 
+[[package]]
+name = "hashlink"
+version = "0.10.0"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "7382cf6263419f2d8df38c55d7da83da5c18aef87fc7a7fc1fb1e344edfe14c1"
+dependencies = [
+ "hashbrown 0.15.5",
+]
+
 [[package]]
 name = "heck"
 version = "0.4.1"
@@ -1604,6 +1743,33 @@ version = "0.4.3"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "7f24254aa9a54b5c858eaee2f5bccdb46aaf0e486a595ed5fd8f86ba55232a70"
 
+[[package]]
+name = "hkdf"
+version = "0.12.4"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "7b5f8eb2ad728638ea2c7d47a21db23b7b58a72ed6a38256b8a1849f15fbbdf7"
+dependencies = [
+ "hmac",
+]
+
+[[package]]
+name = "hmac"
+version = "0.12.1"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "6c49c37c09c17a53d937dfbb742eb3a961d65a994e6bcdcf37e7399d0cc8ab5e"
+dependencies = [
+ "digest 0.10.7",
+]
+
+[[package]]
+name = "home"
+version = "0.5.12"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "cc627f471c528ff0c4a49e1d5e60450c8f6461dd6d10ba9dcd3a61d3dff7728d"
+dependencies = [
+ "windows-sys 0.61.2",
+]
+
 [[package]]
 name = "html5ever"
 version = "0.38.0"
@@ -2035,6 +2201,9 @@ name = "lazy_static"
 version = "1.5.0"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "bbd2bcb4c963f2ddae06a2efc7e9f3591312473c50c6685e1f298068316e66fe"
+dependencies = [
+ "spin",
+]
 
 [[package]]
 name = "libappindicator"
@@ -2085,13 +2254,33 @@ dependencies = [
  "winapi",
 ]
 
+[[package]]
+name = "libm"
+version = "0.2.16"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "b6d2cec3eae94f9f509c767b45932f1ada8350c4bdb85af2fcab4a3c14807981"
+
 [[package]]
 name = "libredox"
 version = "0.1.17"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "f02ab6bace2054fb888a3c16f990117b579d14a3088e472d63c6011fa185c9d3"
 dependencies = [
+ "bitflags 2.13.0",
  "libc",
+ "plain",
+ "redox_syscall 0.8.1",
+]
+
+[[package]]
+name = "libsqlite3-sys"
+version = "0.30.1"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "2e99fb7a497b1e3339bc746195567ed8d3e24945ecd636e3619d20b9de9e9149"
+dependencies = [
+ "cc",
+ "pkg-config",
+ "vcpkg",
 ]
 
 [[package]]
@@ -2148,6 +2337,16 @@ version = "0.8.4"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "47e1ffaa40ddd1f3ed91f717a33c8c0ee23fff369e3aa8772b9605cc1d22f4c3"
 
+[[package]]
+name = "md-5"
+version = "0.10.6"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "d89e7ee0cfbedfc4da3340218492196241d89eefb6dab27de5df917a6d2e78cf"
+dependencies = [
+ "cfg-if",
+ "digest 0.10.7",
+]
+
 [[package]]
 name = "memchr"
 version = "2.8.1"
@@ -2241,12 +2440,47 @@ version = "1.0.6"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "650eef8c711430f1a879fdd01d4745a7deea475becfb90269c06775983bbf086"
 
+[[package]]
+name = "num-bigint-dig"
+version = "0.8.6"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "e661dda6640fad38e827a6d4a310ff4763082116fe217f279885c97f511bb0b7"
+dependencies = [
+ "lazy_static",
+ "libm",
+ "num-integer",
+ "num-iter",
+ "num-traits",
+ "rand",
+ "smallvec",
+ "zeroize",
+]
+
 [[package]]
 name = "num-conv"
 version = "0.2.2"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "521739c6d2bac4aa25192232afe6841231376b2b26d4d9fae5ecf8ca5772e441"
 
+[[package]]
+name = "num-integer"
+version = "0.1.46"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "7969661fd2958a5cb096e56c8e1ad0444ac2bbcd0061bd28660485a44879858f"
+dependencies = [
+ "num-traits",
+]
+
+[[package]]
+name = "num-iter"
+version = "0.1.46"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "c92800bd69a1eac91786bcfe9da64a897eb72911b8dc3095decbd07429e8048b"
+dependencies = [
+ "num-integer",
+ "num-traits",
+]
+
 [[package]]
 name = "num-traits"
 version = "0.2.19"
@@ -2254,6 +2488,7 @@ source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "071dfc062690e90b734c0b2273ce72ad0ffa95f0c74596bc250dcfd960262841"
 dependencies = [
  "autocfg",
+ "libm",
 ]
 
 [[package]]
@@ -2579,7 +2814,7 @@ checksum = "2621685985a2ebf1c516881c026032ac7deafcda1a2c9b7850dc81e3dfcb64c1"
 dependencies = [
  "cfg-if",
  "libc",
- "redox_syscall",
+ "redox_syscall 0.5.18",
  "smallvec",
  "windows-link 0.2.1",
 ]
@@ -2596,6 +2831,15 @@ version = "0.2.3"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "df94ce210e5bc13cb6651479fa48d14f601d9858cfe0467f43ae157023b938d3"
 
+[[package]]
+name = "pem-rfc7468"
+version = "0.7.0"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "88b39c9bfcfc231068454382784bb460aae594343fb030d46e9f50a645418412"
+dependencies = [
+ "base64ct",
+]
+
 [[package]]
 name = "percent-encoding"
 version = "2.3.2"
@@ -2672,12 +2916,39 @@ dependencies = [
  "futures-io",
 ]
 
+[[package]]
+name = "pkcs1"
+version = "0.7.5"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "c8ffb9f10fa047879315e6625af03c164b16962a5368d724ed16323b68ace47f"
+dependencies = [
+ "der",
+ "pkcs8",
+ "spki",
+]
+
+[[package]]
+name = "pkcs8"
+version = "0.10.2"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "f950b2377845cebe5cf8b5165cb3cc1a5e0fa5cfa3e1f7f55707d8fd82e0a7b7"
+dependencies = [
+ "der",
+ "spki",
+]
+
 [[package]]
 name = "pkg-config"
 version = "0.3.33"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "19f132c84eca552bf34cab8ec81f1c1dcc229b811638f9d283dceabe58c5569e"
 
+[[package]]
+name = "plain"
+version = "0.2.3"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "b4596b6d070b27117e987119b4dac604f3c58cfb0b191112e24771b2faeac1a6"
+
 [[package]]
 name = "plist"
 version = "1.9.0"
@@ -2746,6 +3017,15 @@ version = "0.2.0"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "439ee305def115ba05938db6eb1644ff94165c5ab5e9420d1c1bcedbba909391"
 
+[[package]]
+name = "ppv-lite86"
+version = "0.2.21"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "85eae3c4ed2f50dcfe72643da4befc30deadb458a9b590d720cde2f2b1e97da9"
+dependencies = [
+ "zerocopy",
+]
+
 [[package]]
 name = "precomputed-hash"
 version = "0.1.1"
@@ -2843,6 +3123,36 @@ version = "6.0.0"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "f8dcc9c7d52a811697d2151c701e0d08956f92b0e24136cf4cf27b57a6a0d9bf"
 
+[[package]]
+name = "rand"
+version = "0.8.7"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "22f6172bdec972074665ed81ed53b71da00bfc44b65a753cfde883ec4c702a1a"
+dependencies = [
+ "libc",
+ "rand_chacha",
+ "rand_core",
+]
+
+[[package]]
+name = "rand_chacha"
+version = "0.3.1"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "e6c10a63a0fa32252be49d21e7709d4d4baf8d231c2dbce1eaa8141b9b127d88"
+dependencies = [
+ "ppv-lite86",
+ "rand_core",
+]
+
+[[package]]
+name = "rand_core"
+version = "0.6.4"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "ec0be4795e2f6a28069bec0b5ff3e2ac9bafc99e6a9a7dc3547996c5c816922c"
+dependencies = [
+ "getrandom 0.2.17",
+]
+
 [[package]]
 name = "raw-window-handle"
 version = "0.6.2"
@@ -2870,6 +3180,15 @@ dependencies = [
  "bitflags 2.13.0",
 ]
 
+[[package]]
+name = "redox_syscall"
+version = "0.8.1"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "5b44b894f2a6e36457d665d1e08c3866add6ed5e70050c1b4ba8a8ddedb02ce7"
+dependencies = [
+ "bitflags 2.13.0",
+]
+
 [[package]]
 name = "redox_users"
 version = "0.5.2"
@@ -2964,6 +3283,40 @@ dependencies = [
  "web-sys",
 ]
 
+[[package]]
+name = "ring"
+version = "0.17.14"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "a4689e6c2294d81e88dc6261c768b63bc4fcdb852be6d1352498b114f61383b7"
+dependencies = [
+ "cc",
+ "cfg-if",
+ "getrandom 0.2.17",
+ "libc",
+ "untrusted",
+ "windows-sys 0.52.0",
+]
+
+[[package]]
+name = "rsa"
+version = "0.9.10"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "b8573f03f5883dcaebdfcf4725caa1ecb9c15b2ef50c43a07b816e06799bb12d"
+dependencies = [
+ "const-oid",
+ "digest 0.10.7",
+ "num-bigint-dig",
+ "num-integer",
+ "num-traits",
+ "pkcs1",
+ "pkcs8",
+ "rand_core",
+ "signature 2.2.0",
+ "spki",
+ "subtle",
+ "zeroize",
+]
+
 [[package]]
 name = "rustc-hash"
 version = "2.1.2"
@@ -2992,6 +3345,40 @@ dependencies = [
  "windows-sys 0.61.2",
 ]
 
+[[package]]
+name = "rustls"
+version = "0.23.43"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "0283386ce02abc0151e1761d08802dfe86c173b0b494af5cbc086574e453da06"
+dependencies = [
+ "once_cell",
+ "ring",
+ "rustls-pki-types",
+ "rustls-webpki",
+ "subtle",
+ "zeroize",
+]
+
+[[package]]
+name = "rustls-pki-types"
+version = "1.15.1"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "2f4925028c7eb5d1fcdaf196971378ed9d2c1c4efc7dc5d011256f76c99c0a96"
+dependencies = [
+ "zeroize",
+]
+
+[[package]]
+name = "rustls-webpki"
+version = "0.103.13"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "61c429a8649f110dddef65e2a5ad240f747e85f7758a6bccc7e5777bd33f756e"
+dependencies = [
+ "ring",
+ "rustls-pki-types",
+ "untrusted",
+]
+
 [[package]]
 name = "rustversion"
 version = "1.0.22"
@@ -3280,6 +3667,17 @@ dependencies = [
  "stable_deref_trait",
 ]
 
+[[package]]
+name = "sha1"
+version = "0.10.7"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "a978451301f4db1d02937a4ab3ccce137717b81826e79b7d49ffe3244a13c3b8"
+dependencies = [
+ "cfg-if",
+ "cpufeatures 0.2.17",
+ "digest 0.10.7",
+]
+
 [[package]]
 name = "sha2"
 version = "0.10.9"
@@ -3318,6 +3716,16 @@ dependencies = [
  "libc",
 ]
 
+[[package]]
+name = "signature"
+version = "2.2.0"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "77549399552de45a898a580c1b41d445bf730df867cc44e6c0233bbc4b8329de"
+dependencies = [
+ "digest 0.10.7",
+ "rand_core",
+]
+
 [[package]]
 name = "signature"
 version = "3.0.0"
@@ -3347,6 +3755,9 @@ name = "smallvec"
 version = "1.15.1"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "67b1b7a3b5fe4f1376887184045fcf45c69e92af734b7aaddc05fb777b6fbd03"
+dependencies = [
+ "serde",
+]
 
 [[package]]
 name = "socket2"
@@ -3373,7 +3784,7 @@ dependencies = [
  "objc2-foundation",
  "objc2-quartz-core",
  "raw-window-handle",
- "redox_syscall",
+ "redox_syscall 0.5.18",
  "tracing",
  "wasm-bindgen",
  "web-sys",
@@ -3450,6 +3861,215 @@ dependencies = [
  "thiserror 1.0.69",
 ]
 
+[[package]]
+name = "spin"
+version = "0.9.9"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "3763264f6b73151db08c50ff20d7d8a0b8796e021cdea7ceedad07b80155fa0e"
+dependencies = [
+ "lock_api",
+]
+
+[[package]]
+name = "spki"
+version = "0.7.3"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "d91ed6c858b01f942cd56b37a94b3e0a1798290327d1236e4d9cf4eaca44d29d"
+dependencies = [
+ "base64ct",
+ "der",
+]
+
+[[package]]
+name = "sqlx"
+version = "0.8.6"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "1fefb893899429669dcdd979aff487bd78f4064e5e7907e4269081e0ef7d97dc"
+dependencies = [
+ "sqlx-core",
+ "sqlx-macros",
+ "sqlx-mysql",
+ "sqlx-postgres",
+ "sqlx-sqlite",
+]
+
+[[package]]
+name = "sqlx-core"
+version = "0.8.6"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "ee6798b1838b6a0f69c007c133b8df5866302197e404e8b6ee8ed3e3a5e68dc6"
+dependencies = [
+ "base64 0.22.1",
+ "bytes",
+ "crc",
+ "crossbeam-queue",
+ "either",
+ "event-listener",
+ "futures-core",
+ "futures-intrusive",
+ "futures-io",
+ "futures-util",
+ "hashbrown 0.15.5",
+ "hashlink",
+ "indexmap 2.14.0",
+ "log",
+ "memchr",
+ "once_cell",
+ "percent-encoding",
+ "rustls",
+ "serde",
+ "serde_json",
+ "sha2 0.10.9",
+ "smallvec",
+ "thiserror 2.0.18",
+ "tokio",
+ "tokio-stream",
+ "tracing",
+ "url",
+ "webpki-roots 0.26.11",
+]
+
+[[package]]
+name = "sqlx-macros"
+version = "0.8.6"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "a2d452988ccaacfbf5e0bdbc348fb91d7c8af5bee192173ac3636b5fb6e6715d"
+dependencies = [
+ "proc-macro2",
+ "quote",
+ "sqlx-core",
+ "sqlx-macros-core",
+ "syn 2.0.117",
+]
+
+[[package]]
+name = "sqlx-macros-core"
+version = "0.8.6"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "19a9c1841124ac5a61741f96e1d9e2ec77424bf323962dd894bdb93f37d5219b"
+dependencies = [
+ "dotenvy",
+ "either",
+ "heck 0.5.0",
+ "hex",
+ "once_cell",
+ "proc-macro2",
+ "quote",
+ "serde",
+ "serde_json",
+ "sha2 0.10.9",
+ "sqlx-core",
+ "sqlx-mysql",
+ "sqlx-postgres",
+ "sqlx-sqlite",
+ "syn 2.0.117",
+ "tokio",
+ "url",
+]
+
+[[package]]
+name = "sqlx-mysql"
+version = "0.8.6"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "aa003f0038df784eb8fecbbac13affe3da23b45194bd57dba231c8f48199c526"
+dependencies = [
+ "atoi",
+ "base64 0.22.1",
+ "bitflags 2.13.0",
+ "byteorder",
+ "bytes",
+ "crc",
+ "digest 0.10.7",
+ "dotenvy",
+ "either",
+ "futures-channel",
+ "futures-core",
+ "futures-io",
+ "futures-util",
+ "generic-array",
+ "hex",
+ "hkdf",
+ "hmac",
+ "itoa",
+ "log",
+ "md-5",
+ "memchr",
+ "once_cell",
+ "percent-encoding",
+ "rand",
+ "rsa",
+ "serde",
+ "sha1",
+ "sha2 0.10.9",
+ "smallvec",
+ "sqlx-core",
+ "stringprep",
+ "thiserror 2.0.18",
+ "tracing",
+ "whoami",
+]
+
+[[package]]
+name = "sqlx-postgres"
+version = "0.8.6"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "db58fcd5a53cf07c184b154801ff91347e4c30d17a3562a635ff028ad5deda46"
+dependencies = [
+ "atoi",
+ "base64 0.22.1",
+ "bitflags 2.13.0",
+ "byteorder",
+ "crc",
+ "dotenvy",
+ "etcetera",
+ "futures-channel",
+ "futures-core",
+ "futures-util",
+ "hex",
+ "hkdf",
+ "hmac",
+ "home",
+ "itoa",
+ "log",
+ "md-5",
+ "memchr",
+ "once_cell",
+ "rand",
+ "serde",
+ "serde_json",
+ "sha2 0.10.9",
+ "smallvec",
+ "sqlx-core",
+ "stringprep",
+ "thiserror 2.0.18",
+ "tracing",
+ "whoami",
+]
+
+[[package]]
+name = "sqlx-sqlite"
+version = "0.8.6"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "c2d12fe70b2c1b4401038055f90f151b78208de1f9f89a7dbfd41587a10c3eea"
+dependencies = [
+ "atoi",
+ "flume",
+ "futures-channel",
+ "futures-core",
+ "futures-executor",
+ "futures-intrusive",
+ "futures-util",
+ "libsqlite3-sys",
+ "log",
+ "percent-encoding",
+ "serde",
+ "serde_urlencoded",
+ "sqlx-core",
+ "thiserror 2.0.18",
+ "tracing",
+ "url",
+]
+
 [[package]]
 name = "stable_deref_trait"
 version = "1.2.1"
@@ -3480,6 +4100,17 @@ dependencies = [
  "quote",
 ]
 
+[[package]]
+name = "stringprep"
+version = "0.1.5"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "7b4df3d392d81bd458a8a621b8bffbd2302a12ffe288a9d931670948749463b1"
+dependencies = [
+ "unicode-bidi",
+ "unicode-normalization",
+ "unicode-properties",
+]
+
 [[package]]
 name = "strsim"
 version = "0.11.1"
@@ -4039,6 +4670,17 @@ dependencies = [
  "syn 2.0.117",
 ]
 
+[[package]]
+name = "tokio-stream"
+version = "0.1.19"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "a3d06f0b082ba57c26b79407372e57cf2a1e28124f78e9479fe80322cf53420b"
+dependencies = [
+ "futures-core",
+ "pin-project-lite",
+ "tokio",
+]
+
 [[package]]
 name = "tokio-util"
 version = "0.7.18"
@@ -4353,18 +4995,45 @@ dependencies = [
  "unic-common",
 ]
 
+[[package]]
+name = "unicode-bidi"
+version = "0.3.18"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "5c1cb5db39152898a79168971543b1cb5020dff7fe43c8dc468b0885f5e29df5"
+
 [[package]]
 name = "unicode-ident"
 version = "1.0.24"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "e6e4313cd5fcd3dad5cafa179702e2b244f760991f45397d14d4ebf38247da75"
 
+[[package]]
+name = "unicode-normalization"
+version = "0.1.25"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "5fd4f6878c9cb28d874b009da9e8d183b5abc80117c40bbd187a1fde336be6e8"
+dependencies = [
+ "tinyvec",
+]
+
+[[package]]
+name = "unicode-properties"
+version = "0.1.4"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "7df058c713841ad818f1dc5d3fd88063241cc61f49f5fbea4b951e8cf5a8d71d"
+
 [[package]]
 name = "unicode-segmentation"
 version = "1.13.3"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "c6f5d3c3b1bf09027a88a6bc961fc00497d651009560b5463668dc81b0fa87a8"
 
+[[package]]
+name = "untrusted"
+version = "0.9.0"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "8ecb6da28b8a351d773b68d5825ac39017e680750f980f3a1a85cd8dd28a47c1"
+
 [[package]]
 name = "url"
 version = "2.5.8"
@@ -4414,6 +5083,12 @@ dependencies = [
  "wasm-bindgen",
 ]
 
+[[package]]
+name = "vcpkg"
+version = "0.2.15"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "accd4ea62f7bb7a82fe23066fb0957d48ef677f6eeb8215f372f52e48bb32426"
+
 [[package]]
 name = "version-compare"
 version = "0.2.1"
@@ -4480,6 +5155,12 @@ dependencies = [
  "wit-bindgen",
 ]
 
+[[package]]
+name = "wasite"
+version = "0.1.0"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "b8dad83b4f25e74f184f64c43b150b91efe7647395b42289f38e50566d82855b"
+
 [[package]]
 name = "wasm-bindgen"
 version = "0.2.122"
@@ -4614,6 +5295,24 @@ dependencies = [
  "system-deps",
 ]
 
+[[package]]
+name = "webpki-roots"
+version = "0.26.11"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "521bc38abb08001b01866da9f51eb7c5d647a19260e00054a8c7fd5f9e57f7a9"
+dependencies = [
+ "webpki-roots 1.0.9",
+]
+
+[[package]]
+name = "webpki-roots"
+version = "1.0.9"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "7dcd9d09a39985f5344844e66b0c530a33843579125f23e21e9f0f220850f22a"
+dependencies = [
+ "rustls-pki-types",
+]
+
 [[package]]
 name = "webview2-com"
 version = "0.38.2"
@@ -4650,6 +5349,16 @@ dependencies = [
  "windows-core 0.61.2",
 ]
 
+[[package]]
+name = "whoami"
+version = "1.6.1"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "5d4a4db5077702ca3015d3d02d74974948aba2ad9e12ab7df718ee64ccd7e97d"
+dependencies = [
+ "libredox",
+ "wasite",
+]
+
 [[package]]
 name = "winapi"
 version = "0.3.9"
@@ -4917,6 +5626,24 @@ dependencies = [
  "windows-targets 0.42.2",
 ]
 
+[[package]]
+name = "windows-sys"
+version = "0.48.0"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "677d2418bec65e3338edb076e806bc1ec15693c5d0104683f2efe857f61056a9"
+dependencies = [
+ "windows-targets 0.48.5",
+]
+
+[[package]]
+name = "windows-sys"
+version = "0.52.0"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "282be5f36a8ce781fad8c8ae18fa3f9beff57ec1b52cb3de0789201425d9a33d"
+dependencies = [
+ "windows-targets 0.52.6",
+]
+
 [[package]]
 name = "windows-sys"
 version = "0.59.0"
@@ -5240,6 +5967,7 @@ dependencies = [
  "serde_json",
  "specta",
  "specta-typescript",
+ "sqlx",
  "tauri",
  "tauri-build",
  "tauri-plugin-opener",
@@ -5361,6 +6089,26 @@ dependencies = [
  "zvariant",
 ]
 
+[[package]]
+name = "zerocopy"
+version = "0.8.55"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "b5a105cd7b140f6eeec8acff2ea38135d3cab283ada58540f629fe51e46696eb"
+dependencies = [
+ "zerocopy-derive",
+]
+
+[[package]]
+name = "zerocopy-derive"
+version = "0.8.55"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "0fe976fb70c78cd64cccfe3a6fc142244e8a77b70959b30faf9d0ac37ee228eb"
+dependencies = [
+ "proc-macro2",
+ "quote",
+ "syn 2.0.117",
+]
+
 [[package]]
 name = "zerofrom"
 version = "0.1.8"
diff --git a/src-tauri/Cargo.toml b/src-tauri/Cargo.toml
index e7e21bd..5130e4f 100644
--- a/src-tauri/Cargo.toml
+++ b/src-tauri/Cargo.toml
@@ -28,6 +28,7 @@ ed25519-dalek = "3.0.0"
 getrandom = "0.4.3"
 device_query = "4.0.1"
 tokio = "1.53.1"
+sqlx = { version = "0.8.6", features = ["runtime-tokio-rustls", "sqlite", "migrate"] }
 tauri-specta = { version = "2.0.0-rc.21", features = ["derive", "typescript"] }
 specta = "2.0.0-rc.21"
 specta-typescript = { version = "0.0.9" }
diff --git a/src-tauri/migrations/20260731000000_create_friends.sql b/src-tauri/migrations/20260731000000_create_friends.sql
new file mode 100644
index 0000000..49fe549
--- /dev/null
+++ b/src-tauri/migrations/20260731000000_create_friends.sql
@@ -0,0 +1,4 @@
+CREATE TABLE friends (
+    id TEXT PRIMARY KEY NOT NULL,
+    display_name TEXT NOT NULL
+);
diff --git a/src-tauri/src/db/mod.rs b/src-tauri/src/db/mod.rs
new file mode 100644
index 0000000..096cec9
--- /dev/null
+++ b/src-tauri/src/db/mod.rs
@@ -0,0 +1,48 @@
+use sqlx::sqlite::{SqliteConnectOptions, SqliteJournalMode, SqlitePoolOptions};
+use sqlx::{Pool, Sqlite};
+use std::error::Error;
+use tauri::{AppHandle, Manager};
+
+const DATABASE_FILE: &str = "wyd.sqlite";
+
+pub struct AppDatabase {
+    pool: Pool<Sqlite>,
+}
+
+impl AppDatabase {
+    pub fn new(pool: Pool<Sqlite>) -> Self {
+        Self { pool }
+    }
+
+    pub fn pool(&self) -> &Pool<Sqlite> {
+        &self.pool
+    }
+}
+
+pub async fn init(app: &AppHandle) -> Result<(), Box<dyn Error>> {
+    let app_data_dir = app.path().app_data_dir()?;
+    std::fs::create_dir_all(&app_data_dir)?;
+
+    let db_path = app_data_dir.join(DATABASE_FILE);
+    let options = SqliteConnectOptions::new()
+        .filename(db_path)
+        .create_if_missing(true)
+        .journal_mode(SqliteJournalMode::Wal)
+        .foreign_keys(true);
+
+    let pool = SqlitePoolOptions::new()
+        .max_connections(5)
+        .connect_with(options)
+        .await?;
+
+    sqlx::migrate!("./migrations").run(&pool).await?;
+
+    app.manage(AppDatabase::new(pool));
+
+    Ok(())
+}
+
+#[inline]
+pub fn command_error(error: impl std::fmt::Display) -> String {
+    error.to_string()
+}
diff --git a/src-tauri/src/friends/mod.rs b/src-tauri/src/friends/mod.rs
new file mode 100644
index 0000000..569a397
--- /dev/null
+++ b/src-tauri/src/friends/mod.rs
@@ -0,0 +1,63 @@
+use crate::db::{self, AppDatabase};
+use serde::{Deserialize, Serialize};
+use specta::Type;
+use tauri::State;
+
+#[derive(Debug, Clone, Serialize, Deserialize, Type, sqlx::FromRow)]
+#[serde(rename_all = "camelCase")]
+pub struct Friend {
+    pub id: String,
+    pub display_name: String,
+}
+
+#[tauri::command]
+#[specta::specta]
+pub async fn create_friend(
+    database: State<'_, AppDatabase>,
+    friend: Friend,
+) -> Result<Friend, String> {
+    sqlx::query("INSERT INTO friends (id, display_name) VALUES (?1, ?2)")
+        .bind(&friend.id)
+        .bind(&friend.display_name)
+        .execute(database.pool())
+        .await
+        .map_err(db::command_error)?;
+
+    Ok(friend)
+}
+
+#[tauri::command]
+#[specta::specta]
+pub async fn list_friends(database: State<'_, AppDatabase>) -> Result<Vec<Friend>, String> {
+    sqlx::query_as::<_, Friend>(
+        "SELECT id, display_name FROM friends ORDER BY display_name COLLATE NOCASE, id",
+    )
+    .fetch_all(database.pool())
+    .await
+    .map_err(db::command_error)
+}
+
+#[tauri::command]
+#[specta::specta]
+pub async fn get_friend(
+    database: State<'_, AppDatabase>,
+    id: String,
+) -> Result<Option<Friend>, String> {
+    sqlx::query_as::<_, Friend>("SELECT id, display_name FROM friends WHERE id = ?1")
+        .bind(id)
+        .fetch_optional(database.pool())
+        .await
+        .map_err(db::command_error)
+}
+
+#[tauri::command]
+#[specta::specta]
+pub async fn delete_friend(database: State<'_, AppDatabase>, id: String) -> Result<bool, String> {
+    let result = sqlx::query("DELETE FROM friends WHERE id = ?1")
+        .bind(id)
+        .execute(database.pool())
+        .await
+        .map_err(db::command_error)?;
+
+    Ok(result.rows_affected() > 0)
+}
diff --git a/src-tauri/src/lib.rs b/src-tauri/src/lib.rs
index 7818866..f1fa0f0 100644
--- a/src-tauri/src/lib.rs
+++ b/src-tauri/src/lib.rs
@@ -1,17 +1,28 @@
 mod cursor;
+mod db;
+mod friends;
 mod ufa;
+mod windowing;
 
-fn launch_app(app: &tauri::App) {
+async fn launch_app(app: &tauri::App) -> Result<(), Box<dyn std::error::Error>> {
     let handle = app.handle();
+    crate::db::init(handle).await?;
     crate::ufa::init();
     crate::cursor::init(handle);
+    crate::windowing::init(handle);
+    Ok(())
 }
 
 #[cfg_attr(mobile, tauri::mobile_entry_point)]
 pub fn run() {
     let specta_builder = tauri_specta::Builder::<tauri::Wry>::new()
         .error_handling(tauri_specta::ErrorHandlingMode::Throw)
-        .commands(tauri_specta::collect_commands![])
+        .commands(tauri_specta::collect_commands![
+            crate::friends::create_friend,
+            crate::friends::list_friends,
+            crate::friends::get_friend,
+            crate::friends::delete_friend
+        ])
         .events(tauri_specta::collect_events![]);
 
     #[cfg(debug_assertions)]
@@ -26,7 +37,7 @@ pub fn run() {
         .plugin(tauri_plugin_opener::init())
         .invoke_handler(specta_builder.invoke_handler())
         .setup(|app| {
-            launch_app(app);
+            tauri::async_runtime::block_on(launch_app(app))?;
             Ok(())
         })
         .build(tauri::generate_context!())
diff --git a/src/lib/bindings.ts b/src/lib/bindings.ts
index 7d34a9c..8f472ae 100644
--- a/src/lib/bindings.ts
+++ b/src/lib/bindings.ts
@@ -5,7 +5,18 @@
 
 
 export const commands = {
-
+async createFriend(friend: Friend) : Promise<Friend> {
+    return await TAURI_INVOKE("create_friend", { friend });
+},
+async listFriends() : Promise<Friend[]> {
+    return await TAURI_INVOKE("list_friends");
+},
+async getFriend(id: string) : Promise<Friend | null> {
+    return await TAURI_INVOKE("get_friend", { id });
+},
+async deleteFriend(id: string) : Promise<boolean> {
+    return await TAURI_INVOKE("delete_friend", { id });
+}
 }
 
 /** user-defined events **/
@@ -18,7 +29,7 @@ export const commands = {
 
 /** user-defined types **/
 
-
+export type Friend = { id: string; displayName: string }
 
 /** tauri-specta globals **/