docs: audit CLAUDE.md instructions across repos for stale cprr commands

## Summary

Multiple repos reference cprr commands/flags that don't exist, causing agent failures.

## Findings (2026-03-28 audit)

Across ~30 projects with `.cprr/` directories:

| Ghost Command | Found In | Actual Equivalent |
|---------------|----------|-------------------|
| \`cprr register --id --claim --prediction\` | emacs-mcp-maximalist | \`cprr add --hypothesis\` |
| \`cprr measure --id --result --status\` | emacs-mcp-maximalist | \`cprr evidence\` + \`cprr next\` |
| \`bd create --template conjecture\` | CLAUDE.md (this repo) | \`bd create\` (templates may not exist) |
| \`bd status conjecture-stated\` | CLAUDE.md | \`bd status\` (status names unverified) |

## Action Items

- [ ] Grep all `aygp-dr/*` and `jwalsh/*` CLAUDE.md files for `cprr` references
- [ ] Verify each referenced command/flag actually exists
- [ ] Update or remove stale references
- [ ] Consider adding a `cprr help ` that's easily parseable by agents

Start by grepping the referenced CLAUDE.md files across aygp-dr/* and jwalsh/*, then inspect the .cprr directories and verify each cprr and bd command or flag against the available CLI help. Update or remove stale documentation, and consider the requested parseable cprr help only if the audit shows it is needed. Done means the audited references use existing commands and flags.

Written by the indexing model from the issue text.