feat: add Cursor and Grok as native providers (superseded by #584)

CONTRIBUTING.md

@@ -97,10 +97,11 @@ is derived from it. **Process** is how to build, check and submit work.
 ### Reporting bugs and asking for features
 
 Open an [issue](https://github.com/Tryanks/tcode/issues). For a bug, include
-your OS, which agent (Claude Code / Codex / which ACP agent), what you did, what
-happened and what you expected. A screenshot beats a paragraph for anything
-visual. If you are unsure whether something is a bug or intended, open an issue
-anyway — the answer is worth writing down either way.
+your OS, which agent (Claude Code, Codex, pi, OpenCode, Cursor, Grok, or which
+ACP agent), what you did, what happened and what you expected. A screenshot
+beats a paragraph for anything visual. If you are unsure whether something is a
+bug or intended, open an issue anyway — the answer is worth writing down either
+way.
 
 ### Building
 
@@ -121,8 +122,8 @@ Platform prerequisites:
   `libwayland-dev`, `libxcb*`, `libssl-dev`, `libasound2-dev`, `libfontconfig-dev`).
   The embedded preview browser is compiled out on Linux.
 
-Provider CLIs are resolved from `PATH` (`claude`, `codex`, `pi`, `opencode`) and
-can be overridden in **Settings → Providers**.
+Provider CLIs are resolved from `PATH` (`claude`, `codex`, `pi`, `opencode`,
+`cursor-agent`, `grok`) and can be overridden in **Settings → Providers**.
 
 ### Before you open a pull request
 
@@ -275,7 +276,8 @@ crates/ios, crates/android, crates/web
                          `tcode_ui::run_shell`
 crates/platform/*        GPUI platform backends for iOS and Android
 crates/agent             provider clients (no GPUI) — claude.rs, codex.rs, pi.rs,
-                         opencode.rs, acp.rs
+                         opencode.rs, cursor.rs, grok.rs, acp.rs; the ACP
+                         session they share is acp_session.rs
 crates/term              terminal implementation (PTY, host-side emulator)
 crates/mcp-host          shared authenticated loopback host for in-process MCP servers
 crates/preview-mcp       MCP server exposing the preview browser to the agent

README.md

@@ -6,7 +6,7 @@
 
 **A native GUI for the terminal coding agents you already use.**
 
-Claude Code, Codex, pi, OpenCode, and any agent that speaks ACP — one window,
+Claude Code, Codex, pi, OpenCode, Cursor, Grok, and any agent that speaks ACP — one window,
 on your desktop, your phone, or in a browser.
 
 [Download](https://github.com/Tryanks/tcode/releases) ·
@@ -78,6 +78,8 @@ and a live plan/task panel.
 | [Codex](https://developers.openai.com/codex/cli) | `codex` on your `PATH` |
 | [pi](https://github.com/earendil-works/pi) | `pi` on your `PATH` |
 | [OpenCode](https://opencode.ai) | `opencode` on your `PATH` |
+| [Cursor](https://cursor.com/cli) | `cursor-agent` on your `PATH` |
+| [Grok](https://x.ai) | `grok` on your `PATH` |
 
 **Everything else, over [ACP](https://agentclientprotocol.com).** Tcode ships a
 marketplace backed by the official ACP registry.
@@ -179,7 +181,7 @@ also include a `SHA256SUMS.txt` file.
 | Browser | Embedded in the headless release; open the HTTP link it prints (HTTPS only through your own tunnel). No separate signed app package |
 
 **2. Have an agent installed.** Tcode drives the CLIs, it doesn't bundle them.
-Make sure `claude`, `codex`, `pi` or `opencode` is on your `PATH` — or install an ACP agent from
+Make sure `claude`, `codex`, `pi`, `opencode`, `cursor-agent` or `grok` is on your `PATH` — or install an ACP agent from
 the marketplace once Tcode is running.
 
 **3. Add a project and start a thread.** Point Tcode at a directory, type, send.

crates/agent/Cargo.toml

@@ -8,6 +8,7 @@ default = ["process"]
 process = [
     "dep:agent-client-protocol",
     "dep:base64",
+    "dep:sha2",
     "dep:smol",
     "dep:ureq",
     "dep:uuid",
@@ -22,6 +23,7 @@ log = "0.4"
 base64 = { version = "0.23", optional = true }
 serde = { version = "1", features = ["derive"] }
 serde_json = "1"
+sha2 = { version = "0.11", optional = true }
 smol = { version = "2", optional = true }
 ureq = { version = "2", default-features = false, features = ["tls", "gzip"], optional = true }
 uuid = { version = "1", features = ["v4"], optional = true }