[Docs]: Post–#55 agent bus — roadmap, user-settings Agents section, and cross-links

[rosspeili]

Doc location

• docs/development/roadmap.md - docs/user-settings.md - docs/agents/local-bus.md - docs/using-the-app.md (Settings → Agents pointer, if missing) - CHANGELOG.md (verify feat(agent-bus): local loopback command API for agents and scripts #55 entry is complete on main)

What kind of change?

Missing section

What’s wrong or missing?

Follow-up to #6 / #55 (local agent bus shipped: Settings → Agents, 127.0.0.1:47903, HTTP + WebSocket, six stage commands, encrypted token in agent-bus.json). Docs are partially updated but housekeeping remains:

1. Roadmap — #6 and #42 should be marked done on main; follow-ups (MCP, audio API, WebSocket events) should point at new issues instead of living under “future” wording.
2. User settings guide — docs/user-settings.md only has a table row for Agents; needs a short subsection: where the panel lives, token copy/regenerate, loopback URL, link to docs/agents/local-bus.md.
3. Cross-links — local-bus.md should link back to user-settings; README / using-the-app should mention Agents for integrators.
4. Screenshot — optional Agents panel capture; can ride [Docs]: Visual overhaul — reshoot companion screenshots & GIFs (batched)` #33 (docs visual overhaul) if still open, otherwise add a placeholder note in this PR.

Suggested fix (optional)

• Roadmap checkboxes: #6 ✅, #42 ✅; add bullets for MCP adapter, bus audio API, WebSocket events (link issue numbers once filed).
• User-settings subsection (~10–15 lines): panel location, token handling, default port, “see local-bus.md for curl/MCP”.
• No product code changes unless a broken doc link is found.

Checklist

• I searched existing issues for a duplicate