workspace: add cce-relief

The relief editors (cce-relief, cce-ramp) moved out of cce-ui into their own
crate.

Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>

 Cargo.lock | 9 +++++++++
 Cargo.toml | 1 +
 2 files changed, 10 insertions(+)

diff --git a/Cargo.lock b/Cargo.lock
index cd3afdc..e531017 100644
--- a/Cargo.lock
+++ b/Cargo.lock
@@ -1536,6 +1536,15 @@ dependencies = [
  "wayland-client",
 ]
 
+[[package]]
+name = "cce-relief"
+version = "0.1.0"
+dependencies = [
+ "cce-ui",
+ "kdl 4.7.1",
+ "serde_json",
+]
+
 [[package]]
 name = "cce-remote"
 version = "0.1.0"
diff --git a/Cargo.toml b/Cargo.toml
index d916cd2..f2bab83 100644
--- a/Cargo.toml
+++ b/Cargo.toml
@@ -39,6 +39,7 @@ members = [
     "cce-weather",
     "cce-model",
     "cce-mesh-io",
+    "cce-relief",
 ]
 
 # Every app declares cce-ui (and cce-compositor also cce-window-manager) as a git