Pack candidate: spectacle — IEEE/ISO spec templates

[arcaven]

Context

spectacle is the IEEE/ISO standards-based spec projection system in the ArcavenAE ecosystem. It is the natural second pack for sideshow after bmad — same org, similar install model, already has a manifest.

Part of: #9 (SDD system survey)
Ref: kos finding-042

System Profile

• Repo: ArcavenAE/spectacle
• Fingerprint: spectacle.yaml at project root (in the spectacle repo); .claude/commands/spectacle/ in consumer projects
• Storage: YAML + Markdown (files only)
• Standards covered: ISO/IEC/IEEE 29148, IEEE 1016, ISO/IEC/IEEE 42010, arc42, MADR

Current Install Model

just install <target-dir>           # copies commands → <target>/.claude/commands/spectacle/
just install-templates <target-dir> # copies templates → <target>/docs/spec/

This is the same pattern sideshow already implements for bmad: copy files into .claude/commands/ with rewritten paths.

What Sideshow Would Manage

1. Commands — .claude/commands/spectacle/*.md (slash commands: /spectacle.srs, /spectacle.sdd, etc.)
2. Templates — templates/ directory (29148, 1016, 42010, arc42, MADR)
3. Profiles — profiles/ directory (viewpoint selection presets)

Version Detection

spectacle.yaml has a version field. Sideshow can check this for update detection.

Implementation Notes

• The install flow is nearly identical to bmad: copy commands, rewrite relative paths to absolute
• Templates are optional (user may want commands only, loading templates on demand)
• Consider two install modes: sideshow install spectacle (commands only) vs sideshow install spectacle --with-templates
• spectacle.yaml serves as both the pack manifest and the system fingerprint