Add Kimi Coding Plan provider

Cargo.toml

@@ -7,6 +7,7 @@ members = [
   "crates/daemon",
   "crates/desktop",
   "crates/providers-cursor",
+  "crates/providers-kimi",
   "crates/providers-openai",
   "crates/providers-opencode-go",
   "crates/providers-zai",
@@ -26,14 +27,15 @@ assert_cmd = "2.2.2"
 async-trait = "0.1.89"
 clap = { version = "4.6.1", features = ["derive"] }
 directories = "6.0.0"
+fs4 = "1.1.0"
 gtk = { package = "gtk4", version = "0.11.4" }
 insta = { version = "1.47.2", features = ["json"] }
 jsonwebtoken = { version = "10.4.0", default-features = false }
 keyring = { version = "4.1.2", default-features = false, features = ["v1"] }
 libadwaita = { version = "0.9.1" }
 predicates = "3.1.4"
 relm4 = { version = "0.11.0", features = ["libadwaita", "gnome_50"] }
-reqwest = { version = "0.13.4", default-features = false, features = ["json", "rustls"] }
+reqwest = { version = "0.13.4", default-features = false, features = ["form", "json", "rustls"] }
 rpassword = "7.3"
 serde = { version = "1.0.228", features = ["derive"] }
 serde_json = "1.0.150"

README.md

@@ -0,0 +1,28 @@
+# BrainDrain
+
+BrainDrain shows coding-agent subscription usage in its CLI and desktop
+frontends.
+
+## Kimi Coding Plan
+
+Install and sign in with the first-party
+[Kimi Code CLI](https://github.com/MoonshotAI/kimi-cli), then run:
+
+```console
+braindrain check kimi
+```
+
+BrainDrain reads the OAuth credentials that Kimi Code stores at
+`~/.kimi/credentials/kimi-code.json` (or under `KIMI_SHARE_DIR`), refreshes an
+expiring token using the same cross-process lock and OAuth protocol, and fetches
+subscription usage from `https://api.kimi.com/coding/v1/usages`. It preserves
+unknown credential fields when Kimi rotates tokens. `KIMI_CODE_BASE_URL` can
+override the API base for testing or compatible deployments; `KIMI_API_KEY` is
+used only when no Kimi Code credential file exists.
+
+Usage is subscription-wide and does not depend on a selected inference model, so
+BrainDrain does not hard-code or rewrite Kimi's dynamic model catalog.
+
+The implementation tracks the first-party protocol and storage layout at
+MoonshotAI/kimi-cli commit
+[`4a550eff`](https://github.com/MoonshotAI/kimi-cli/tree/4a550effdfcb29a25a5d325bf935296cc50cd417).

apps/linux/src/app.rs

@@ -28,6 +28,7 @@ pub fn provider_title(id: &str) -> &str {
     match id {
         "openai" => "OpenAI",
         "cursor" => "Cursor",
+        "kimi" => "Kimi Code",
         "zai" => "z.ai",
         "opencode-go" => "OpenCode Go",
         other => other,

apps/macos/Sources/BrainDrainApp/ProviderListModel.swift

@@ -117,6 +117,8 @@ struct ProviderViewState: Identifiable {
             "OpenAI"
         case "cursor":
             "Cursor"
+        case "kimi":
+            "Kimi Code"
         case "zai":
             "z.ai"
         case "opencode-go":

apps/plasma/package/contents/ui/main.qml

@@ -534,6 +534,9 @@ PlasmoidItem {
     if (provider === "cursor") {
       return "Cursor";
     }
+    if (provider === "kimi") {
+      return "Kimi Code";
+    }
     if (provider === "zai") {
       return "z.ai";
     }

crates/core/src/lib.rs

@@ -18,6 +18,7 @@ pub struct ProviderId(String);
 impl ProviderId {
     pub const OPENAI: &'static str = "openai";
     pub const CURSOR: &'static str = "cursor";
+    pub const KIMI: &'static str = "kimi";
     pub const ZAI: &'static str = "zai";
     pub const OPENCODE_GO: &'static str = "opencode-go";
 
@@ -33,6 +34,10 @@ impl ProviderId {
         Self::new(Self::CURSOR)
     }
 
+    pub fn kimi() -> Self {
+        Self::new(Self::KIMI)
+    }
+
     pub fn zai() -> Self {
         Self::new(Self::ZAI)
     }

crates/providers-kimi/Cargo.toml

@@ -0,0 +1,20 @@
+[package]
+name = "braindrain-providers-kimi"
+version.workspace = true
+edition.workspace = true
+license.workspace = true
+
+[dependencies]
+braindrain-core = { path = "../core" }
+fs4 = { workspace = true }
+reqwest = { workspace = true }
+serde = { workspace = true }
+serde_json = { workspace = true }
+thiserror = { workspace = true }
+time = { workspace = true }
+tokio = { workspace = true }
+url = { workspace = true }
+
+[dev-dependencies]
+tempfile = { workspace = true }
+wiremock = { workspace = true }