fix(ci): quote YAML strings containing colons

GitHub Actions workflow was failing at YAML parse because step names
like 'Smoke test: --help works' contain a colon followed by a space,
which YAML interprets as a mapping key separator. The same issue
affected the 'rm -f ~/.ado_cli/...' run script (tilde + slash).

Fixed by:
- Quoting all step names that contain ': '
- Quoting run values that contain '--' flags or start with '~'
- Using $HOME instead of ~ for the user config path

YAML now parses cleanly. Re-running the workflow.

Author: gilbertwong96

.github/workflows/ci.yml

@@ -122,15 +122,16 @@ jobs:
       - name: Build escript
         run: mix escript.build
 
-      - name: Smoke test: --help works
-        run: ./ado --help
+      - name: "Smoke test: --help works"
+        run: "./ado --help"
 
-      - name: Smoke test: whoami with no auth returns friendly error
+
+      - name: "Smoke test: whoami with no auth returns friendly error"
         run: |
-          rm -f ~/.ado_cli/config.json
+          rm -f "$HOME/.ado_cli/config.json"
           ./ado whoami || true
 
-      - name: Smoke test: logout is idempotent
+      - name: "Smoke test: logout is idempotent"
         run: ./ado logout
 
       - name: Run tests