diff --git a/.github/workflows/build-genecluster-runner.yml b/.github/workflows/build-genecluster-runner.yml
index 68416ee..372de72 100644
--- a/.github/workflows/build-genecluster-runner.yml
+++ b/.github/workflows/build-genecluster-runner.yml
@@ -19,7 +19,8 @@ permissions:
 
 env:
   REGISTRY: ghcr.io
-  IMAGE_NAME: ${{ github.repository_owner }}/genecluster-runner
+  # IMAGE_NAME is computed (lowercased) in the "Normalize image name" step below.
+  # GHCR rejects tags containing uppercase characters and the owner is "BioSymphony".
 
 jobs:
   build:
@@ -29,6 +30,12 @@ jobs:
       digest: ${{ steps.build.outputs.digest }}
 
     steps:
+      - name: Normalize image name
+        # GHCR repository names must be lowercase; github.repository_owner is "BioSymphony".
+        env:
+          OWNER: ${{ github.repository_owner }}
+        run: echo "IMAGE_NAME=${OWNER,,}/genecluster-runner" >> "$GITHUB_ENV"
+
       - name: Checkout
         uses: actions/checkout@v6
 
diff --git a/.github/workflows/build-genecluster-superpowers.yml b/.github/workflows/build-genecluster-superpowers.yml
index c614776..4decafa 100644
--- a/.github/workflows/build-genecluster-superpowers.yml
+++ b/.github/workflows/build-genecluster-superpowers.yml
@@ -39,7 +39,8 @@ permissions:
 
 env:
   REGISTRY: ghcr.io
-  IMAGE_NAME: ${{ github.repository_owner }}/genecluster-superpowers
+  # IMAGE_NAME is computed (lowercased) in the "Normalize image name" step below.
+  # GHCR rejects tags containing uppercase characters and the owner is "BioSymphony".
 
 jobs:
   build:
@@ -49,6 +50,12 @@ jobs:
       digest: ${{ steps.build.outputs.digest }}
 
     steps:
+      - name: Normalize image name
+        # GHCR repository names must be lowercase; github.repository_owner is "BioSymphony".
+        env:
+          OWNER: ${{ github.repository_owner }}
+        run: echo "IMAGE_NAME=${OWNER,,}/genecluster-superpowers" >> "$GITHUB_ENV"
+
       - name: Checkout
         uses: actions/checkout@v6
 
@@ -79,7 +86,7 @@ jobs:
           BASE_IMAGE_INPUT: ${{ inputs.base_runner_image }}
           GITHUB_REPOSITORY_OWNER: ${{ github.repository_owner }}
         run: |
-          DEFAULT_BASE_IMAGE="${REGISTRY}/${GITHUB_REPOSITORY_OWNER}/genecluster-runner:v0.1"
+          DEFAULT_BASE_IMAGE="${REGISTRY}/${GITHUB_REPOSITORY_OWNER,,}/genecluster-runner:v0.1"
           {
             echo "args<<EOF"
             echo "BASE_IMAGE=${BASE_IMAGE_INPUT:-$DEFAULT_BASE_IMAGE}"
diff --git a/Makefile b/Makefile
index c85be50..88f8404 100644
--- a/Makefile
+++ b/Makefile
@@ -22,7 +22,7 @@ skill-audit:
 	PYTHONDONTWRITEBYTECODE=1 python3 -B skills/biosymphony/scripts/biosymphony_public_skill_audit.py --skill-root skills/biosymphony
 
 capability:
-	PYTHONDONTWRITEBYTECODE=1 python3 -B skills/biosymphony/scripts/capability_probe.py --json
+	PYTHONDONTWRITEBYTECODE=1 python3 -B skills/biosymphony/scripts/capability_probe.py --json --no-fail
 
 artifact-scan:
 	PYTHONDONTWRITEBYTECODE=1 python3 -B skills/biosymphony/scripts/genecluster_preflight.py \
diff --git a/skills/biosymphony/scripts/capability_probe.py b/skills/biosymphony/scripts/capability_probe.py
index e4f6145..2e60254 100755
--- a/skills/biosymphony/scripts/capability_probe.py
+++ b/skills/biosymphony/scripts/capability_probe.py
@@ -92,6 +92,16 @@ def conda_envs(conda_path: str | None) -> dict[str, Any]:
 def main() -> int:
     parser = argparse.ArgumentParser(description="Probe local BioSymphony capability tiers.")
     parser.add_argument("--json", action="store_true", help="Emit machine-readable JSON.")
+    parser.add_argument(
+        "--no-fail",
+        action="store_true",
+        help=(
+            "Report-only: always exit 0 even when Tier A is not locally ready. "
+            "Used by `make capability` so CI (which lacks local GUI apps / tooling / "
+            "the ValarTTS server) does not fail. Direct invocation without this flag "
+            "keeps the exit-1 signal for local readiness checks."
+        ),
+    )
     args = parser.parse_args()
 
     path_commands = {cmd: shutil.which(cmd) for cmd in PATH_COMMANDS}
@@ -173,6 +183,8 @@ def main() -> int:
         if missing_mods:
             print("Missing Python modules: " + ", ".join(missing_mods))
 
+    if args.no_fail:
+        return 0
     return 0 if tier_a_ready else 1