Documents the 2 crates (gsh binary + libgsh library), the GSH_*
env-var contract that bascule sets and forge-fuse reads (Phase 3
shell-IS-session), the cross-workspace dependency on
forge-core::CorpusCapabilityCeiling for the runtime three-way
intersection, and the local dev-environment/ playbook for the
WSL2 + Bascule + Hetzner Keycloak + Entra federation flow.
Co-Authored-By: Claude Opus 4.7 (1M context) <noreply@anthropic.com>
Signed-off-by: Tyler J King <tking@guildhouse.dev>
