fix(infra): use inputs.parameters for Argo template tag passing

Argo Workflows can't resolve {{tasks.X.outputs}} inside template
bodies — only in DAG task arguments. Pass tag via arguments →
inputs.parameters in compile-services, compile-training,
upload-release, and deploy-services templates.

Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>

infra/k8s/argo/ci-pipeline-template.yaml

@@ -57,11 +57,19 @@ spec:
           - name: compile-services
             dependencies: [create-tag]
             template: compile-services
+            arguments:
+              parameters:
+                - name: tag
+                  value: "{{tasks.create-tag.outputs.parameters.tag}}"
             when: "{{tasks.detect-changes.outputs.parameters.needs-services}} == true"
 
           - name: compile-training
             dependencies: [create-tag]
             template: compile-training
+            arguments:
+              parameters:
+                - name: tag
+                  value: "{{tasks.create-tag.outputs.parameters.tag}}"
             when: "{{tasks.detect-changes.outputs.parameters.needs-training}} == true"
 
           - name: gpu-warmup
@@ -77,11 +85,19 @@ spec:
           - name: upload-release
             dependencies: [compile-services, compile-training]
             template: upload-release
+            arguments:
+              parameters:
+                - name: tag
+                  value: "{{tasks.create-tag.outputs.parameters.tag}}"
             when: "{{tasks.detect-changes.outputs.parameters.needs-code}} == true"
 
           - name: deploy-services
             dependencies: [upload-release]
             template: deploy-services
+            arguments:
+              parameters:
+                - name: tag
+                  value: "{{tasks.create-tag.outputs.parameters.tag}}"
             when: "{{tasks.detect-changes.outputs.parameters.needs-services}} == true"
 
           - name: rebuild-ci-builder
@@ -392,6 +408,9 @@ spec:
     # ── compile-services: CPU-only, runs on ci-compile-cpu alongside compile-training ──
     # sccache backed by MinIO (s3://foxhunt-sccache/cpu/) — shared across nodes
     - name: compile-services
+      inputs:
+        parameters:
+          - name: tag
       nodeSelector:
         k8s.scaleway.com/pool-name: ci-compile-cpu
       tolerations:
@@ -470,7 +489,7 @@ spec:
             cd "$WORKSPACE"
             echo "Checked out $(git rev-parse --short HEAD)"
 
-            export FOXHUNT_BUILD_VERSION="{{tasks.create-tag.outputs.parameters.tag}}"
+            export FOXHUNT_BUILD_VERSION="{{inputs.parameters.tag}}"
             export RUSTC_WRAPPER=sccache
             sccache --zero-stats || true
 
@@ -509,6 +528,9 @@ spec:
     # ── compile-training: CUDA build, needs POP2 for speed ──
     # sccache backed by MinIO (s3://foxhunt-sccache/cuda/sm_XX/) — persists across ephemeral nodes
     - name: compile-training
+      inputs:
+        parameters:
+          - name: tag
       nodeSelector:
         k8s.scaleway.com/pool-name: ci-compile-cpu
       tolerations:
@@ -585,7 +607,7 @@ spec:
             cd "$WORKSPACE"
             echo "Checked out $(git rev-parse --short HEAD)"
 
-            export FOXHUNT_BUILD_VERSION="{{tasks.create-tag.outputs.parameters.tag}}"
+            export FOXHUNT_BUILD_VERSION="{{inputs.parameters.tag}}"
             export RUSTC_WRAPPER=sccache
             export CUDA_COMPUTE_CAP={{workflow.parameters.cuda-compute-cap}}
             export SCCACHE_S3_KEY_PREFIX="cuda/sm_${CUDA_COMPUTE_CAP}"
@@ -625,6 +647,9 @@ spec:
 
     # ── upload-release: create GitLab Release with package links ──
     - name: upload-release
+      inputs:
+        parameters:
+          - name: tag
       nodeSelector:
         k8s.scaleway.com/pool-name: platform
       container:
@@ -648,7 +673,7 @@ spec:
             set -e
             GITLAB="http://gitlab-webservice-default.foxhunt.svc.cluster.local:8181"
             PROJECT_ID=1
-            TAG="{{tasks.create-tag.outputs.parameters.tag}}"
+            TAG="{{inputs.parameters.tag}}"
 
             echo "=== Creating GitLab Release ${TAG} ==="
 
@@ -742,6 +767,9 @@ spec:
 
     # ── deploy-services: rolling restart after new binaries are uploaded ──
     - name: deploy-services
+      inputs:
+        parameters:
+          - name: tag
       serviceAccountName: argo-workflow
       nodeSelector:
         k8s.scaleway.com/pool-name: platform
@@ -765,7 +793,7 @@ spec:
               export PATH="/tmp:$PATH"
             fi
 
-            TAG="{{tasks.create-tag.outputs.parameters.tag}}"
+            TAG="{{inputs.parameters.tag}}"
             echo "=== Deploying release ${TAG} ==="
 
             SERVICES="api trading-service ml-training-service backtesting-service trading-agent-service broker-gateway data-acquisition-service"