The acp-runtime plugin's onLoad now publishes the identity-pinned bundled
claude-code-cli-acp path to FUSION_CLAUDE_ACP_BRIDGE (when unset), so the
pi-claude-cli kill-switch resolves the bridge WITHOUT a manual env var — no
engine->plugin static coupling. Publishes the path only; the ACP transport stays
OFF until an operator sets FUSION_CLAUDE_ACP=1 (rollout gate). Explicit env
override wins; resolver is pinned to the plugin's node_modules/.bin shim.
204/204 plugin tests green (3 new KTD10 tests); typecheck clean.
Co-Authored-By: Claude Opus 4.8 <noreply@anthropic.com>
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