Clean up runtime boundary naming

[chubes4]

Summary

• Replace WPSG/Data Machine-specific fixtures and public examples with neutral sample runtime names.
• Remove the --data-machine and --data-machine-code public CLI aliases; document --component <slug>=<path> as the neutral replacement.
• Tighten production boundary enforcement to catch hyphenated Data Machine names in package sources.

Tests

• npm run test:production-boundary-enforcement
• npx tsx scripts/component-plugin-entrypoint-contract-smoke.ts
• npx tsx scripts/agent-runtime-diagnostics-summary-smoke.ts
• npm run test:runtime-recipe-resolver
• npx tsx scripts/task-input-contract-smoke.ts
• npm run test:materialize-replay-package-command
• npm run build

AI assistance

• AI assistance: Yes
• Tool(s): OpenCode (gpt-5.5)
• Used for: Drafted and applied the runtime boundary naming cleanup, fixture updates, and focused verification steps. Chris remains responsible for review and merge.