Replace placeholder issue-123 style IDs with realistic bead ID format
(prefix + 5-char alphanumeric, e.g., gt-abc12). Add explanation of bead
ID format in Beads Integration section. Update command references and
mermaid diagrams to use consistent "bead" terminology.
Co-Authored-By: Claude Opus 4.5 <noreply@anthropic.com>
`gt rig add` no longer takes in a flag for --remote its just the
parameter of the github url.
`gt crew add` requires a --rig but the instructions don't specify the
flag
Full setup guide covering:
- Prerequisites for macOS and Linux
- Step-by-step installation
- Minimal vs Full Stack mode setup
- Verification with gt doctor
- Troubleshooting common issues
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Co-Authored-By: Claude Opus 4.5 <noreply@anthropic.com>
