ci: increase clippy timeout to 2h and cache target/ for incremental speedup

.gitlab-ci.yml

@@ -45,14 +45,20 @@ default:
     - rustup show
     - rustc --version && cargo --version
   cache:
-    key:
-      files:
-        - Cargo.lock
-        - rust-toolchain.toml
-    paths:
-      - .cargo/registry/
-      - .cargo/git/
-    policy: pull-push
+    - key:
+        files:
+          - Cargo.lock
+          - rust-toolchain.toml
+      paths:
+        - .cargo/registry/
+        - .cargo/git/
+      policy: pull-push
+    - key: "target-$CI_COMMIT_REF_SLUG"
+      paths:
+        - target/
+      policy: pull-push
+      fallback_keys:
+        - "target-$CI_DEFAULT_BRANCH"
   interruptible: true
 
 # ╔══════════════════════════════════════════════════════════════════════════════
@@ -163,7 +169,7 @@ clippy:
   needs: [fmt]
   variables:
     SKIP_WASM_BUILD: "1"
-  timeout: 90m
+  timeout: 2h
   script:
     - git config --global --add safe.directory '*'
     - |