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* feat(cli): add HAPI_DISABLE_PEER_TOOLS to hide peer-session tools from agents Wrapped agents with peer tools can browse the session list and message other sessions, polluting peer contexts on busy runners. Setting HAPI_DISABLE_PEER_TOOLS=1 (true/yes also accepted) in the runner environment now removes the peer surface entirely instead of advertising it and refusing: - the session MCP server does not register list_peers / inspect_peer / ping_peer, and they are dropped from the toolNames consumed by Claude --allowedTools and the codex/generic bridge --tools lists - the stdio bridge filters peer names even when a stale --tools value lists them explicitly - flavor system prompts (claude/codex/opencode) swap the peer steer block for a short notice that keeps the hub-path-is-not-a-file guard while pointing citations at the user - the peer core (pingPeer/inspectPeer/listPeerSessions) refuses with a new 'disabled' error code before any network call, so shell `hapi ping-peer` / `inspect-peer` from inside a wrapped agent fails loudly as defense in depth Operators scope the variable to the runner (systemd/launchd/guard env); an interactive terminal without it keeps full CLI access. via [HAPI](https://hapi.run) Co-Authored-By: HAPI <noreply@hapi.run> Co-Authored-By: Claude Code <noreply@anthropic.com> * test(cli): cover peer-tool prompt steer and default bridge tool list Adds regression tests for the two surfaces the kill switch mutates beyond the explicit --tools path: - happyMcpStdioBridge: default tool list (no --tools) keeps the peer tools as a positive control, then HAPI_DISABLE_PEER_TOOLS=1 filters them out of the same default seed. - New cross-flavor prompt test: the citation steer baked into the claude/codex/opencode prompt consts swaps to the disabled notice under the env flag and keeps the flavor-specific "Call \"<tool>\"" instruction by default (module consts evaluate env at import, so each mode is imported fresh via vi.resetModules + dynamic import). via [HAPI](https://hapi.run) Co-Authored-By: HAPI <noreply@hapi.run> Co-Authored-By: Claude Code <noreply@anthropic.com> * test(cli): keep peer-tools env set through prompt assertions Keeps HAPI_DISABLE_PEER_TOOLS applied until after the assertions and restores it at test end. Some upstream shapes resolve the citation steer at call time (getSystemPrompt(env)) rather than baking it into the import-time const, so restoring the env inside the import helper made those shapes observe the enabled steer and fail. via [HAPI](https://hapi.run) Co-Authored-By: HAPI <noreply@hapi.run> Co-Authored-By: Claude Code <noreply@anthropic.com> --------- Co-authored-by: HAPI <noreply@hapi.run> Co-authored-by: Claude Code <noreply@anthropic.com>