diff --git a/.github/workflows/coverage.yml b/.github/workflows/coverage.yml
index dcaeb355..097ae590 100644
--- a/.github/workflows/coverage.yml
+++ b/.github/workflows/coverage.yml
@@ -90,18 +90,32 @@ jobs:
         run: make test-coverage
       - name: Merge and generate coverage report
         run: |
-          llvm-profdata merge -sparse $(find . -type f -path '*/.build/*/debug/codecov/*.profdata') -o default.profdata
+          mapfile -t PROFDATA_FILES < <(find . -type f -path '*/codecov/*.profdata' -print)
+          if [ "${#PROFDATA_FILES[@]}" -eq 0 ]; then
+              echo "No coverage profile data found"
+              exit 1
+          fi
+          llvm-profdata merge -sparse "${PROFDATA_FILES[@]}" -o default.profdata
           for file in **/Tests; do
             BIN_PATH="$(swift build --show-bin-path --package-path "$(dirname "$file")")"
-            XCTEST_PATHS=$(find "${BIN_PATH}" -name '*.xctest')
-            for XCTEST_PATH in $XCTEST_PATHS; do
-                echo "Processing $XCTEST_PATH"
-                # Export the code coverage for the current subproject and append to coverage.lcov
-                llvm-cov export "${XCTEST_PATH}" \
-                -instr-profile=default.profdata \
-                -format lcov >> coverage.lcov \
-                -ignore-filename-regex=".build/repositories/.*|.*/JAMTests/.*"
-            done
+            while IFS= read -r TEST_BUNDLE; do
+                echo "Processing $TEST_BUNDLE"
+                llvm-cov export "${TEST_BUNDLE}" \
+                  -instr-profile=default.profdata \
+                  -format lcov >> coverage.lcov \
+                  -ignore-filename-regex=".build/repositories/.*|.*/JAMTests/.*"
+            done < <(find "${BIN_PATH}" -type d -name '*.xctest' -print)
+
+            while IFS= read -r TEST_LIBRARY; do
+                TEST_RUNNER="${TEST_LIBRARY%.so}-test-runner"
+                if [ -f "${TEST_RUNNER}" ]; then
+                    echo "Processing $TEST_LIBRARY"
+                    llvm-cov export "${TEST_LIBRARY}" \
+                      -instr-profile=default.profdata \
+                      -format lcov >> coverage.lcov \
+                      -ignore-filename-regex=".build/repositories/.*|.*/JAMTests/.*"
+                fi
+            done < <(find "${BIN_PATH}" -type f -name '*.so' -print)
           done
       - uses: codecov/codecov-action@v4
         with:
diff --git a/.github/workflows/polka-codes-review-pr.yml b/.github/workflows/polka-codes-review-pr.yml
index 87afe648..5144cc90 100644
--- a/.github/workflows/polka-codes-review-pr.yml
+++ b/.github/workflows/polka-codes-review-pr.yml
@@ -19,8 +19,8 @@ concurrency:
   cancel-in-progress: true
 
 jobs:
-  review_gemini:
-    name: Review With Gemini
+  review_polka:
+    name: Review With Polka Codes
     timeout-minutes: 40
     runs-on: ubuntu-latest
     steps:
@@ -29,19 +29,29 @@ jobs:
         with:
           fetch-depth: 0
 
-      - name: Google Auth
-        uses: google-github-actions/auth@v2
-        with:
-          credentials_json: ${{ secrets.GOOGLE_CREDENTIALS }}
+      - name: Check Polka Codes configuration
+        id: check-polka-config
+        shell: bash
+        env:
+          POLKA_BASE_URL: ${{ secrets.POLKA_BASE_URL }}
+          POLKA_API_KEY: ${{ secrets.POLKA_API_KEY }}
+        run: |
+          if [[ -n "$POLKA_BASE_URL" && -n "$POLKA_API_KEY" ]]; then
+            echo "enabled=true" >> "$GITHUB_OUTPUT"
+          else
+            echo "enabled=false" >> "$GITHUB_OUTPUT"
+            echo "Polka Codes secrets are not configured; skipping review."
+          fi
 
-      - name: Run Polka Codes (Gemini)
+      - name: Run Polka Codes
+        if: steps.check-polka-config.outputs.enabled == 'true'
         uses: polka-codes/action@master
         with:
           pr_number: ${{ github.event.inputs.pr_number || github.event.number }}
           review: true
         env:
-          POLKA_API_PROVIDER: google-vertex
-          POLKA_MODEL: gemini-3-pro-preview
+          POLKA_API_PROVIDER: openai-compatible
+          POLKA_BASE_URL: ${{ secrets.POLKA_BASE_URL }}
+          POLKA_API_KEY: ${{ secrets.POLKA_API_KEY }}
+          POLKA_MODEL: gpt-5.6-sol
           GITHUB_TOKEN: ${{ github.token }}
-          GOOGLE_VERTEX_LOCATION: global
-          GOOGLE_VERTEX_PROJECT: ${{ secrets.GOOGLE_VERTEX_PROJECT }}
diff --git a/Boka/Tests/BokaTests/BokaTests.swift b/Boka/Tests/BokaTests/BokaTests.swift
index 4ca754fa..8b19df04 100644
--- a/Boka/Tests/BokaTests/BokaTests.swift
+++ b/Boka/Tests/BokaTests/BokaTests.swift
@@ -6,6 +6,12 @@ import Logging
 import Node
 import Testing
 
+#if canImport(Darwin)
+import Darwin
+#elseif canImport(Glibc)
+import Glibc
+#endif
+
 struct BokaTests {
     @Test func commandWithInvalidPaths() async throws {
         let invalidChainPath = "/path/to/wrong/file.json"
@@ -314,7 +320,8 @@ struct BokaTests {
         }
     }
 
-    @Test func fuzzEnvironmentRejectsUnwritableDataDirectory() throws {
+    @Test(.disabled(if: geteuid() == 0, "requires a non-root user"))
+    func fuzzEnvironmentRejectsUnwritableDataDirectory() throws {
         let root = try makeTemporaryDirectory()
         defer {
             try? FileManager.default.removeItem(at: root)
diff --git a/Makefile b/Makefile
index c58f8462..cdf91a0a 100644
--- a/Makefile
+++ b/Makefile
@@ -63,10 +63,20 @@ test-all: test test-cargo
 
 .PHONY: test-coverage
 test-coverage:
-	@for pkg in $(TEST_PACKAGES); do \
+	@failed=""; \
+	for pkg in $(TEST_PACKAGES); do \
 		echo "Running coverage for $$pkg..."; \
-		swift test --enable-code-coverage --package-path "$$pkg"; \
-	done
+		if swift test --enable-code-coverage --package-path "$$pkg"; then \
+			echo "  ✓ PASS"; \
+		else \
+			echo "  ✗ FAIL"; \
+			failed="$$failed $$pkg"; \
+		fi; \
+	done; \
+	if [ -n "$$failed" ]; then \
+		echo "Failed packages:$$failed"; \
+		exit 1; \
+	fi
 
 .PHONY: build
 build: githooks deps