bd-to-br-migration

<!-- TOC: Philosophy | THE EXACT PROMPT | Decision Tree | Command Map | Transform Patterns | Validation Loop | Risk Tiers | References -->

bd → br Migration

Core Philosophy: One behavioral change, mechanical transforms. The ONLY difference is git handling—everything else is find-replace.

Why This Matters

Incomplete migrations leave broken docs. Agents follow stale bd sync instructions, expect auto-commit, and lose work. This skill ensures complete, verified migrations.

---

THE EXACT PROMPT — Single File Migration

Migrate this file from bd (beads) to br (beads_rust).

Apply transforms IN THIS ORDER (order matters):
1. Section headers: "bd (beads)" → "br (beads_rust)"
2. Add non-invasive note after beads section header
3. Commands: `bd X` → `br X` for ready/list/show/create/update/close/dep/stats
4. Sync command: `bd sync` → `br sync --flush-only`
5. Add git steps after EVERY sync:
   git add .beads/
   git commit -m "sync beads"
6. Issue IDs: bd-### → br-### in thread_ids, subjects, reasons, commits
7. Links: beads_viewer → beads_rust (if present)

Remove completely:
- Daemon references
- Auto-commit assumptions
- Hook installation mentions
- RPC mode

Keep unchanged:
- SQLite/WAL cautions
- bv integration
- Priority system (P0-P4)

VERIFY after editing:
grep -c '`bd ' file.md     # Must be 0
grep -c 'bd sync' file.md  # Must be 0
grep -c 'br sync --flush-only' file.md  # Must be > 0

Why This Prompt Works

• Ordered transforms: Dependencies exist (sync must change before adding git steps)
• Explicit removals: Daemon/RPC don't exist in br—leaving them confuses agents
• Keep list: Prevents accidental removal of still-valid patterns
• Built-in verification: Grep commands catch missed transforms
• No degrees of freedom: This is a LOW freedom task—exact transforms required

---

Decision Tree: What Are You Migrating?

What are you migrating?
│
├─ Single file (AGENTS.md)
│  │
│  └─ Follow THE EXACT PROMPT above
│     Use: ./scripts/verify-migration.sh file.md
│
├─ Multiple files (batch)
│  │
│  ├─ <10 files → Sequential: apply prompt to each
│  │
│  └─ 10+ files → Parallel subagents
│     Batch ~10 files per agent
│     See: [BULK.md](references/BULK.md)
│
└─ Verify existing migration
   │
   └─ Run: ./scripts/find-bd-refs.sh /path
      Any output = incomplete migration

---

The One Behavioral Difference

┌─────────────────────────────────────────────────────────────────┐
│                    bd (Go)              br (Rust)               │
├─────────────────────────────────────────────────────────────────┤
│  bd sync                     →    br sync --flush-only          │
│  (auto-commits to git)            (exports JSONL only)          │
│                                                                 │
│                              +    git add .beads/               │
│                              +    git commit -m "..."           │
└─────────────────────────────────────────────────────────────────┘

Everything else is literally s/bd/br/g

---

Command Map

bd	br	Change Type
bd ready	br ready	Name only
bd list	br list	Name only
bd show <id>	br show <id>	Name only
bd create	br create	Name only
bd update	br update	Name only
bd close	br close	Name only
bd dep add	br dep add	Name only
bd stats	br stats	Name only
bd sync	br sync --flush-only + git	BEHAVIORAL

---

Transform Patterns

Pattern 1: The Non-Invasive Note

Add immediately after any beads section header:

**Note:** `br` is non-invasive and never executes git commands. After `br sync --flush-only`, you must manually run `git add .beads/ && git commit`.

Pattern 2: Sync Command Transform

Before:

bd sync

After:

br sync --flush-only
git add .beads/
git commit -m "sync beads"

Pattern 3: Session End Transform

Before:

git add <files>
bd sync
git push

After:

git add <files>
br sync --flush-only
git add .beads/
git commit -m "..."
git push

Pattern 4: Issue ID Transform

Before:

thread_id: bd-123
subject: [bd-123] Feature implementation
reason: bd-123

After:

thread_id: br-123
subject: [br-123] Feature implementation
reason: br-123

---

Validation Loop

┌─────────────────────────────────────────────────────────────────┐
│                     VALIDATION IS MANDATORY                     │
├─────────────────────────────────────────────────────────────────┤
│                                                                 │
│  1. Apply transforms                                            │
│                    ↓                                            │
│  2. Run verification:                                           │
│     ./scripts/verify-migration.sh file.md                       │
│                    ↓                                            │
│  3. If FAIL → read error → fix specific issue → goto 2          │
│                    ↓                                            │
│  4. Only proceed when PASS                                      │
│                                                                 │
│  ⚠️ Never skip verification. Incomplete migrations break agents.│
└─────────────────────────────────────────────────────────────────┘

Quick Verification Commands

# MUST return 0:
grep -c '`bd ' file.md
grep -c 'bd sync' file.md
grep -c 'bd ready' file.md

# MUST return > 0 (if file has sync sections):
grep -c 'br sync --flush-only' file.md
grep -c 'git add .beads/' file.md

---

Risk Tiers

Operation	Risk	Freedom
Command renames (bd → br)	Low	Mechanical—no judgment
Sync transform + git steps	Medium	MUST add git steps
Removing daemon refs	Medium	Verify not removing valid content
Bulk migration (10+ files)	High	Use subagents with verification

Degrees of Freedom: LOW

This is a deterministic transformation. There is ONE correct output for each input.

• No creative interpretation
• No optional improvements
• No stylistic choices
• Apply transforms EXACTLY as specified

---

What Gets Removed

Pattern	Why Remove	Verify Absent
"bd daemon"	br has no daemon	grep -i daemon
"auto-commits"	br never commits	grep -i "auto.*commit"
"git hooks"	br installs none	grep -i "hook"
"RPC mode"	br has no RPC	grep -i "rpc"

---

What Stays Unchanged

Pattern	Why Keep
SQLite/WAL cautions	br still uses WAL
bv integration	Works with both
Priority P0-P4	Same system
Issue types	Same system
Dependency tracking	Same system
.beads/ as source of truth	Same system

---

Before/After Example

Before (bd)

## Issue Tracking with bd (beads)

Key invariants:
- `.beads/` is authoritative

### Agent workflow:
1. `bd ready` to find work
2. `bd update <id> --status in_progress`
3. Implement
4. `bd close <id>`
5. `bd sync` commits changes

After (br)

## Issue Tracking with br (beads_rust)

**Note:** `br` is non-invasive and never executes git commands. After `br sync --flush-only`, you must manually run `git add .beads/ && git commit`.

Key invariants:
- `.beads/` is authoritative

### Agent workflow:
1. `br ready` to find work
2. `br update <id> --status in_progress`
3. Implement
4. `br close <id>`
5. Sync and commit:
   ```bash
   br sync --flush-only
   git add .beads/
   git commit -m "sync beads"

---

## References

| Need | Reference |
|------|-----------|
| Complete before/after examples | [TRANSFORMS.md](references/TRANSFORMS.md) |
| Bulk migration strategy | [BULK.md](references/BULK.md) |
| Common mistakes & fixes | [PITFALLS.md](references/PITFALLS.md) |

---

## Scripts

| Script | Purpose |
|--------|---------|
| `./scripts/find-bd-refs.sh /path` | Find files needing migration |
| `./scripts/verify-migration.sh file.md` | Verify migration complete |

---

## Validation

```bash
# Full verification
./scripts/verify-migration.sh /path/to/AGENTS.md

# Quick check (should return nothing)
grep '`bd ' /path/to/AGENTS.md

If any bd references remain → migration incomplete → re-apply transforms.