add env example

testdata/secrets/Taskfile.yml

@@ -50,3 +50,17 @@ tasks:
       - echo "Starting task"
       - defer: echo "Cleanup with secret={{.DEFERRED_SECRET}} and app={{.APP_NAME}}"
       - echo "Main command executed"
+
+  test-env-secret-limitation:
+    desc: Test showing that env vars with secret flag are NOT masked (limitation)
+    env:
+      SECRET_TOKEN:
+        value: "env-secret-token-123"
+        secret: true  # This flag does NOT work for env vars!
+      PUBLIC_ENV: "public-value"
+    cmds:
+      # Templates {{.VAR}} don't work with env - they're empty
+      - echo "Token via template is {{.SECRET_TOKEN}}"
+      # Shell $VAR works but is NOT masked (env vars not in template system)
+      - echo "Token via shell is $SECRET_TOKEN"
+      - echo "Public env is {{.PUBLIC_ENV}}"

testdata/secrets/testdata/TestSecretVars-env_secret_limitation.golden

@@ -0,0 +1,6 @@
+task: [test-env-secret-limitation] echo "Token via template is "
+Token via template is 
+task: [test-env-secret-limitation] echo "Token via shell is $SECRET_TOKEN"
+Token via shell is env-secret-token-123
+task: [test-env-secret-limitation] echo "Public env is "
+Public env is