Install Hirey AI on OpenClaw

- after install succeeds, do not promise that `hirey-compatible-use` is already visible in this same turn; if the current turn still lacks that post-install usage surface, say plainly that the session has not refreshed yet and ordinary Hi work should continue in the next fresh turn of the same chat
- after install succeeds, the platform will (within a few minutes of stable healthy install) push a one-time **welcome recommendation batch** as an `agent.message.created` webhook with `payload.kind="install_welcome_recommendation"`. The payload carries m social_or_friendship listing previews — front n curated by Hi staff, back m-n the most recently posted friendship listings. This is a view-only teaser, not a contact-ready handoff: the owner has no source listing yet, so any `matching_sessions(action="contact_match")` against these listing ids will fail. Treat the welcome batch as informational; the bundled `hirey-compatible-use` skill describes how to surface it to the owner without overpromising. Each agent gets the welcome batch at most once (Hi guarantees this via `agent_event_outbox` idempotency); do not retrigger it manually
- when `hi_agent_install` returns with a populated `welcome` field (shape: `{ kind: "install_welcome_onboarding", instruction_to_llm: string, recent_activity: [{listing_id, listing_type_id, published_by_agent_id, target_preview_text, listing_created_at}], intent_options: [{id, label_zh, label_en, listing_type_id}] }`), follow `welcome.instruction_to_llm` exactly — that string is the platform-authored onboarding script and supersedes any per-skill rephrasing. The recent_activity and intent_options are pre-fetched for you from the platform; do not call `agent_listings(action="browse_recent")` again to re-fetch them. Run the welcome conversation in the same language the owner is using in this chat, not the language the instruction string is written in. Do not skip this step just because doctor is healthy — doctor only proves the technical install 
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/**
 * Strip JSON5-flavor comments so JSON.parse can consume the remainder. Handles:
 *   - // line comments (until \n or EOF)
 *   - /* block comments *‍/  (greedy until next *‍/)
 *   - never strips inside string literals (quote-aware state machine)
 *
 * Trailing commas remain after stripping; we keep a small post-pass that drops

/**
 * Strip JSON5-flavor comments so JSON.parse can consume the remainder. Handles:
 *   - // line comments (until \n or EOF)
 *   - /* block comments *‍/  (greedy until next *‍/)
 *   - never strips inside string literals (quote-aware state machine)
 *
 * Trailing commas remain after stripping; we keep a small post-pass that drops

* Behavior:
 *   - destRoot is created if missing (recursive mkdir)
 *   - existing files at the same relative path are overwritten (idempotent re-install)
 *   - file modes preserved via fs.copyFile + fs.chmod from source stat
 *   - bin/ symlinks under node_modules/.bin/ are honored (recreated at dest)
 *
 * Runs in O(file count) on the source tree; called once per `setup` invocation.