# Gruppenunterhaltungen — fun factor & chemistry

**Das Ganze ist mehr als die Summe seiner Teile.** The product must make the **ensemble** feel stronger than any single Oo — emergent capability from distinct specialists, not a mega-agent wearing many hats.

When strong Oo personalities meet, it should get **funny** sometimes. **Fun factor is essential.** Group chats must spark — character friction, banter, chemistry — not a sterile multi-bot committee.

## Product bar

| Do | Don't |
|----|-------|
| Playful disagreement when useful | Corporate-dull consensus voice |
| Distinct personas riffing in-lane | Same tone from every bot |
| Useful outcomes after the spark | Chaos for its own sake |
| Grandma-simple entry (see PERSONA-SELECTION) | Jargon gate or “meeting mode” UI |

**Useful + lively.** Banter serves the user; it is not performative noise.

## Persona prompts & group dynamics

Group roster context (`renderGroupMembersContext` in `packages/core/src/bot-messages.ts`) tells each Oo:

- Strong personalities may **disagree playfully** — humor and chemistry welcome when it helps.
- Never **sterile committee** tone; never condescending Wunderwuzzi.
- One bot owns each stage; handoffs are baton passes, not ping-pong reports.

When writing specialist instructions: allow **geek-peer depth** and **respectful pushback** between specialists; defer out-of-lane work, don’t flatten voice.

## Stage & ensemble (`OoGroupStage`)

| Signal | Stage |
|--------|-------|
| **Active speaker** | Full hero — who has the floor |
| **Peer reply / riff** | `extractGroupSpark` → **Riffing** phase label + spark subtitle (same stage grammar as 1:1) |
| **Multi-working** | Higher bloom energy; subtitle names count on the floor |
| **Handoff** | Awareness strip + handoff sound — baton pass, not boardroom |

Ensemble row: **working pulse only** — no extra chrome (mantra: weniger ist mehr). Chemistry lives in copy + sound, not one-off UI.

## Sound & motion

| Cue | When |
|-----|------|
| `group-spark` | Peer Oo reply in group thread — lighter, playful staccato |
| `handoff` | Stage ownership transfer |
| `work-complete` | Run settles — calm exhale |

Respects `prefers-reduced-motion: reduce`. Lively ≠ loud; energy caps stay procedural.

## Implementation map

| Layer | Path |
|-------|------|
| Spark detection | `apps/web/src/lib/group-stage.ts` — `extractGroupSpark`, `resolveRiffingBotId` |
| Group narration | `apps/web/src/lib/bot-persona.ts` — `narrateGroupSpark` |
| Stage UI | `apps/web/src/components/stage/OoStage.tsx` — `OoGroupStage`, `StageEnsemble` |
| Sound | `apps/web/src/lib/oo-sound.ts` — `group-spark` |
| Shell wiring | `apps/web/src/pages/Shell.tsx` — play spark on `bot_message_received` in groups |
| Bot prompts | `packages/core/src/bot-messages.ts` |