chore(skills): add team-agent mapping to plan-sprint skill

Defines default agents per team so sprint briefings name the
right agents to spawn. Registers Inigo for the audio team.

Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>

.claude/skills/plan-sprint/SKILL.md

@@ -14,8 +14,21 @@ allowed-tools: Bash, Read, Grep, Glob, Write, AskUserQuestion
 
 Generate sprint briefing files for each active team (e.g. `server.md`,
 `client.md`, `copy.md`, `joint.md`) for the next sprint based on current
-project state. Valid teams: `server`, `client`, `copy`, `audio`, `visual`,
-`ci`. Only generate briefings for teams that have tickets in the sprint.
+project state. Only generate briefings for teams that have tickets in the sprint.
+
+## Teams and Default Agents
+
+| Team | Branch | Default Agents | Focus |
+|------|--------|----------------|-------|
+| `server` | `server` | Dudley (dev), Tyre (arch), Hoshe (QA) | Rust/bevy_ecs simulation, ECS systems, knowledge graph, perception |
+| `client` | `client` | Stig (dev), Tyre (arch), Hoshe (QA) | Godot 4 client, rendering, UI, HUD, input handling |
+| `copy` | `copy` | Mellanie (author), Paula (narrative), Gestalt (systems) | Dialogue, monologue, UI text, knowledge vocabulary, lore |
+| `audio` | `audio` | Inigo (sound design) | Soundscapes, ambient layers, diegetic cues, audio propagation |
+| `visual` | `visual` | Araminta (art direction) | Art assets, sprites, visual consistency, style guides |
+| `ci` | `ci` | Justine (build/deploy) | Build pipelines, CI/CD, tooling, packaging |
+
+When writing briefings, name the assigned agents in the **Agents** line of each
+file so the team knows who to spawn.
 
 ## Workflow