fix: workflow-authoring flat schema, bootstrap PATH guidance

- #110.3: flat schema example uses enum: [done] instead of bare const
  (bare const fails validate-semantic hasStatusEnum check)
- #110.4: bootstrap adds 'which hermes' PATH check and venv guidance
- #110.1: already fixed in rc.1 (inline hello.yaml)
- #110.2: already fixed in rc.1 (capabilities: [] present)

Fixes #110

packages/cli/src/commands/prompt.ts

@@ -48,6 +48,11 @@ Install an agent adapter (at least one is required):
 pip install hermes-agent[acp]   # or: pip install -e .[acp] if installed from source
 \`\`\`
 
+Verify \`hermes\` is in your PATH: \`which hermes\`. If Hermes is installed in a virtualenv (e.g. \`~/.hermes/hermes-agent/.venv/\`), activate it or add the bin directory to PATH:
+\`\`\`bash
+export PATH="$HOME/.hermes/hermes-agent/.venv/bin:$PATH"
+\`\`\`
+
 Verify the adapter is installed: \`uwf-hermes --version\` (or whichever you chose).
 
 ### Step 2 — Configure provider and model