diff --git a/.github/workflows/unit_integration_test.yaml b/.github/workflows/unit_integration_test.yaml
index b51dfaa8fc2..1856162c76c 100644
--- a/.github/workflows/unit_integration_test.yaml
+++ b/.github/workflows/unit_integration_test.yaml
@@ -49,6 +49,8 @@ jobs:
         steps:
             - name: Checkout
               uses: actions/checkout@v4
+              with:
+                fetch-depth: 0  # Required for PR diff to work
             - name: Checkout submodules & Bootstrap
               uses: ./.github/actions/checkout-submodules-and-bootstrap
               with:
@@ -74,11 +76,16 @@ jobs:
                      *) ;;
                   esac
 
-                  scripts/build/gn_gen.sh --args="$GN_ARGS chip_data_model_check_die_on_failure=true"
+                  scripts/build/gn_gen.sh --args="$GN_ARGS chip_data_model_check_die_on_failure=true use_coverage=true is_debug=true"
             - name: Run Build
               run: scripts/run_in_build_env.sh "ninja -C out/$BUILD_TYPE"
             - name: Run Tests
-              run: scripts/tests/gn_tests.sh
+              run: scripts/tests/gn_modified_code_tests.sh
+            - name: Run Code Coverage
+              run: scripts/build_coverage.sh --code=all
+            - name: Upload Code Coverage
+              shell: bash
+              run: bash <(curl -s https://codecov.io/bash)
             # TODO Log Upload https://github.com/project-chip/connectedhomeip/issues/2227
             # TODO https://github.com/project-chip/connectedhomeip/issues/1512
             # - name: Run Code Coverage
diff --git a/examples/platform/silabs/provision/BUILD.gn b/examples/platform/silabs/provision/BUILD.gn
index e08cd4938e5..871b01d10c7 100644
--- a/examples/platform/silabs/provision/BUILD.gn
+++ b/examples/platform/silabs/provision/BUILD.gn
@@ -22,12 +22,9 @@ if (wifi_soc) {
   import("${silabs_sdk_build_root}/efr32_sdk.gni")
 }
 
-# Seperate import since the matter_support_root is defined in the ef32_sdk.gni / SiWx917_sdk.gni
+# Separate import since the matter_support_root is defined in the ef32_sdk.gni / SiWx917_sdk.gni
 import("${matter_support_root}/provision/args.gni")
 source_set("storage") {
-  # SL-TEMP: CHIP_DEVICE_CONFIG_ENABLE_EXAMPLE_CREDENTIALS  is required for credentials fallback in ProvisionStorageXXX.
-  # The define is replaced by SL_MATTER_ENABLE_EXAMPLE_CREDENTIALS in matter 1.5.
-  defines = [ "CHIP_DEVICE_CONFIG_ENABLE_EXAMPLE_CREDENTIALS=1" ]
   sources = [ "ProvisionStorageCustom.cpp" ]
 
   if (use_provision_flash_storage) {
diff --git a/scripts/tests/gn_modified_code_tests.sh b/scripts/tests/gn_modified_code_tests.sh
new file mode 100755
index 00000000000..fa6ade01a80
--- /dev/null
+++ b/scripts/tests/gn_modified_code_tests.sh
@@ -0,0 +1,87 @@
+#!/usr/bin/env bash
+
+#
+# Copyright (c) 2020 Project CHIP Authors
+#
+# Licensed under the Apache License, Version 2.0 (the "License");
+# you may not use this file except in compliance with the License.
+# You may obtain a copy of the License at
+#
+#     http://www.apache.org/licenses/LICENSE-2.0
+#
+# Unless required by applicable law or agreed to in writing, software
+# distributed under the License is distributed on an "AS IS" BASIS,
+# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+# See the License for the specific language governing permissions and
+# limitations under the License.
+#
+
+set -e
+
+# Paths and environment
+CHIP_ROOT="$(cd "$(dirname "$0")/../.." && pwd)"
+BUILD_DIR="$CHIP_ROOT/out/$BUILD_TYPE"
+CHECK_ALL=false
+
+source "$CHIP_ROOT/scripts/activate.sh"
+
+# Enable dmalloc if configured
+dmalloc=$(gn --root="$CHIP_ROOT" args "$BUILD_DIR" --short --list=chip_config_memory_debug_dmalloc)
+
+case "$dmalloc" in
+    "chip_config_memory_debug_dmalloc = true")
+        eval "$(dmalloc -b -i 1 high)"
+        export G_SLICE=always-malloc
+        ;;
+    "chip_config_memory_debug_dmalloc = false") ;;
+    *)
+        echo >&2 "Invalid dmalloc output: \"$dmalloc\""
+        exit 1
+        ;;
+esac
+
+echo "🔍 Detecting if this is a PR build with file diff support..."
+
+# Only try differential logic if in PR context
+if [[ -n "$GITHUB_EVENT_NAME" && "$GITHUB_EVENT_NAME" == "pull_request" && -n "$GITHUB_BASE_REF" ]]; then
+    echo "📂 Fetching changed files..."
+    git fetch origin "$GITHUB_BASE_REF" --depth=1 || true
+    CHANGED_FILES=$(git diff --name-only origin/"$GITHUB_BASE_REF"...HEAD)
+
+    echo "🔍 Changed files:"
+    echo "$CHANGED_FILES"
+
+    TESTS_TO_RUN=()
+
+    for f in "$CHANGED_FILES"; do
+        base=$(basename "$f" .cpp)
+
+        # Loop through test binaries and try to match with changed source file
+        for test in "$BUILD_DIR"/tests/Test*; do
+            test_name=$(basename "$test")
+            if [[ "$test_name" == *"$base"* && -x "$test" ]]; then
+                TESTS_TO_RUN+=("$test")
+            fi
+        done
+    done
+
+    if [ ${#TESTS_TO_RUN[@]} -eq 0 ]; then
+        echo "⚠️ No matching test binaries found for changed files. Running all tests instead."
+        CHECK_ALL=true
+    fi
+else
+    echo "ℹ️ Not a PR build or missing base ref — running all tests."
+    CHECK_ALL=true
+fi
+
+set -x
+
+if [ "$CHECK_ALL" = true ]; then
+    ninja -v -C "$BUILD_DIR" -k 0 check
+else
+    echo "✅ Running selected test(s) only:"
+    for t in "${TESTS_TO_RUN[@]}"; do
+        echo "▶️  $t"
+        "$t"
+    done
+fi