docs: move the Meso-NH guide to tests/mnh/README.md

AGENTS.md

@@ -25,7 +25,7 @@ not part of routine development.
   parameters. Use `ForeFireRunner` for sweeps and parallel runs.
 - Browser: the WASM build has no NetCDF. Do not assume a native feature works
   there without running `bindings/wasm/smoke.mjs`.
-- Meso-NH coupling (`MPI_COUPLING`, `docs/mnh`, `tests/mnh_*`) is not built in
+- Meso-NH coupling (`MPI_COUPLING`, `tests/mnh`, `tests/mnh_*`) is not built in
   CI. Report coupled behaviour as untested unless you ran it.
 - Tests: CTest unit tests, `tests/runff` and `tests/python`, see TESTING.md.
   `*.ref` files are in Git LFS; configure with `-DFOREFIRE_CHECK_LFS=OFF` when

docs/source/user_guide/mesonh.rst

@@ -58,7 +58,7 @@ The repository includes two examples:
        It runs 20 minutes of simulated time using four MPI processes.
 
 Follow the `coupled installation and execution guide
-<https://github.com/forefireAPI/forefire/blob/dev/docs/mnh/coupledMNHInstall.md>`_
+<https://github.com/forefireAPI/forefire/blob/dev/tests/mnh/README.md>`_
 for prerequisites, compilation, linking the library and running either
 case. The guide was tested with Meso-NH 6.0.1 on Ubuntu 24.04 and also
 explains how to compare coupled results between ForeFire versions.

tests/README.md

@@ -33,7 +33,7 @@ ctest --test-dir build --output-on-failure
 * *(optional)* **Meso-NH**, for the `mnh_*` tests only. `mnh_coupled.bash`
   builds it, links ForeFire and runs `mnh_real_nested`; with `--compare` it
   runs the `dev` × PR check. See
-  [`docs/mnh/coupledMNHInstall.md`](../docs/mnh/coupledMNHInstall.md).
+  [`tests/mnh/README.md`](mnh/README.md).
 
   ```bash
   # sets SRC_MESONH and XYZ, which the mnh_* scripts use

tools/htdocs/js/mnh3d.js

@@ -1,5 +1,5 @@
 // Live 3D view of a ForeFire run coupled to Meso-NH, served by listenHTTP[]
-// (tools/htdocs/mnh3d.html, see docs/mnh/coupledMNHInstall.md).
+// (tools/htdocs/mnh3d.html, see tests/mnh/README.md).
 // Reads the fire front with print[], plume and wind with plot[], terrain and
 // fuel from the case's data.nc. Everything is placed in ForeFire metres.
 import * as THREE from 'three';