Render ACP activity with native OpenCode tools

[intellectronica]

Summary

• project shared ACP tool activity onto native OpenCode shell/read/search/edit/web/todo/task cards
• preserve native reasoning and add Cursor-, Claude-, Codex-, and Grok-aware subagent activity with a shared fallback
• honour OpenCode ACP provider whitelist/blacklist filters, including parameterised Cursor model IDs
• correlate Cursor task notifications and suppress redundant internal interaction cards

Verification

• pnpm check
• pnpm test:coverage (193 tests)
• live Cursor 2026.08.11 model discovery and tool/reasoning/subagent smoke tests
• live acp.cursor whitelist verification: grok-4.6 resolves to the sole current parameterised catalogue entry