diff --git a/ci-requirements.md b/ci-requirements.md
index a443498..a0e4e6b 100644
--- a/ci-requirements.md
+++ b/ci-requirements.md
@@ -159,14 +159,27 @@ backend/frontend push.
 - No Postgres lane (unchanged): the desktop app's local store + sync behavior is
   verified on the operator's machine, not in CI.
 
-## Android lane — REMOVED 2026-08-17
+## Android lane — being rebuilt (M12)
 
 The Tauri-mobile Android lane is gone. Android is a native Kotlin/Compose client
 over the shared `thoughtsync-core` crate instead — see Scribe note 2730 for the
-decision and milestone M12 for the arc. Its CI lane and image will be rebuilt on
-that basis; `ci-tauri-android` is being repurposed (drop `tauri-cli`, add
-`cargo-ndk`) rather than deleted, because its NDK binutils symlinks and PATH fix
-are load-bearing for any Rust-on-Android cross-compile.
+decision and milestone M12 for the arc.
+
+The image it will run on already exists: **`ci-rust-android:1.97`**, repurposed
+from `ci-tauri-android` rather than deleted (CI-runner `dc802f2`, Scribe #2732).
+`tauri-cli` is out and `cargo-ndk` is in; the NDK binutils symlinks and the PATH
+append stayed, because they were never Tauri problems — NDK r23 removed the
+triple-prefixed binutils that autotools, and so vendored OpenSSL, invokes by bare
+name. It also carries `ktlint` + `detekt` so the Kotlin analyzer lane needs no
+second image, and JDK 25 (which requires **Gradle 9.1+** in this repo's wrapper —
+the old JDK 17 pin existed only because Tauri generated a Gradle 8.x project).
+
+The Rust pin is in LOCKSTEP with `ci-tauri` and `ci-tauri-win`. All three build
+`thoughtsync-core` from one workspace `Cargo.lock` under `--locked`, so a
+mismatched Rust minor across the lanes would mean divergent resolution for no
+reason. Bump the three together or not at all.
+
+No workflow consumes it yet; the lane arrives with the app skeleton (M12 step 5).
 
 ## Formatting the Rust lane before pushing