Records the verified design before implementing: keep dsh-bash agent-side
execution and render Zed's terminal tool-call card via the `_meta` convention
(terminal_info/terminal_output/terminal_exit), capability-gated on
clientCapabilities._meta.terminal_output, with the ```console text block as the
no-capability fallback. Rejects the spec's client-side terminal/create path (it
would bypass dsh-bash's sandbox/env-scrub/ownership/cwd). Studied
claude-agent-acp, codex-acp, and Zed's renderer to ground the wire contract.
Live streaming and command classification are noted as separate follow-ups.