From 0000000000000000000000000000000000000000 Mon Sep 17 00:00:00 2001
From: iceBear67 <icebear67@sfclub.cc>
Date: Fri, 14 Aug 2026 04:47:50 +0000
Subject: [PATCH] Brand fork builds in --version output

Adds FORK_NAME/fork_tag() to xai-grok-version and splices the tag into
the pager's version line, so a locally built binary reads

    grok [newgrok] 1.0.3 (abc1234)

and is never mistaken for an official xAI release.

The tag is placed immediately after "grok " rather than appended,
because main.rs's version_output_writer_preserves_channel_aware_contract
test asserts the line still ends with the channel label (or ")").

[EXAMPLE PATCH] Demonstrates patching upstream Rust source. Safe to drop:
delete the patch file and run 'make apply'.

diff --git a/crates/codegen/xai-grok-pager-bin/src/main.rs b/crates/codegen/xai-grok-pager-bin/src/main.rs
index ac1adc4fc7800e507742d4ae4bb7067edf2959f5..19238e835bb37d8d9670c70b0402d43caf248827 100644
--- a/crates/codegen/xai-grok-pager-bin/src/main.rs
+++ b/crates/codegen/xai-grok-pager-bin/src/main.rs
@@ -1788,7 +1788,8 @@ fn install_heap_profile_hooks() {
 }
 fn version_text(channel_label: &str) -> String {
     format!(
-        "grok {}\n",
+        "grok {} {}\n",
+        xai_grok_version::fork_tag(),
         xai_grok_version::display_version_with_commit(env!("VERSION_WITH_COMMIT"), channel_label,)
     )
 }
diff --git a/crates/codegen/xai-grok-version/src/lib.rs b/crates/codegen/xai-grok-version/src/lib.rs
index 29fdfc1e64ea1df96f0ca3e1afe78c9ac37843bd..f56d96d34b828a0c10267fca407bc0b14e0c2a55 100644
--- a/crates/codegen/xai-grok-version/src/lib.rs
+++ b/crates/codegen/xai-grok-version/src/lib.rs
@@ -9,6 +9,15 @@ pub const VERSION: &str = match option_env!("GROK_VERSION") {
     None => env!("CARGO_PKG_VERSION"),
 };
 
+/// Name of this downstream fork. Builds from this tree are not official xAI
+/// releases, so every user-facing version line carries the tag below.
+pub const FORK_NAME: &str = "newgrok";
+
+/// Bracketed fork marker for version output, e.g. `"[newgrok]"`.
+pub fn fork_tag() -> String {
+    format!("[{FORK_NAME}]")
+}
+
 /// [`TEST_VERSION_ENV`] override first, then [`VERSION`]. Trimmed so
 /// non-semver-aware callers can pass the result straight into parsing.
 pub fn installed() -> String {
@@ -72,4 +81,12 @@ mod tests {
         assert_eq!(display_version(""), VERSION);
         assert!(display_version(" [stable]").ends_with("[stable]"));
     }
+
+    /// The fork marker must stay non-empty and bracketed -- the pager splices it
+    /// into `--version` output, whose format test asserts the surrounding shape.
+    #[test]
+    fn test_fork_tag_is_bracketed_fork_name() {
+        assert!(!FORK_NAME.is_empty());
+        assert_eq!(fork_tag(), format!("[{FORK_NAME}]"));
+    }
 }