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v1 → v2 Migration — Development Guide

docs/migration-dev.md

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v1 → v2 Migration — Development Guide

How to test, develop, and debug the migration flow.

Quick start

bash
# Full cycle: reset → migrate → Claude finishes
bash migrate-v2-reset.sh && bash migrate-v2.sh

Architecture

Two-part migration:

  1. migrate-v2.sh — deterministic bash script. Handles prerequisites, DB seeding, file copies, channel install, container build, service switchover. Writes logs/setup-migration/handoff.json then execs into Claude.

  2. /migrate-from-v1 skill — Claude-driven. Reads the handoff, seeds owner/roles, cleans up CLAUDE.local.md, validates container configs, ports fork customizations.

File layout

migrate-v2.sh                        # Entry point
migrate-v2-reset.sh                  # Wipe v2 state for re-testing
setup/migrate-v2/
  env.ts                             # Phase 1a: merge .env
  db.ts                              # Phase 1b: seed v2 DB
  groups.ts                          # Phase 1c: copy group folders + container.json
  sessions.ts                        # Phase 1d: copy sessions + set continuation
  tasks.ts                           # Phase 1e: port scheduled tasks
  channel-auth.ts                    # Phase 2b: copy channel auth state
  select-channels.ts                 # Phase 2a: clack multiselect
  switchover-prompt.ts               # Service switch prompts
setup/migrate-v2/shared.ts           # Shared helpers (JID parsing, trigger mapping, etc.)
.claude/skills/migrate-from-v1/      # The Claude skill
logs/setup-migration/handoff.json    # Written by migrate-v2.sh, read by skill
logs/migrate-steps/*.log             # Per-step raw output

Development loop

bash
# Reset v2 to clean state (keeps node_modules)
bash migrate-v2-reset.sh

# Run migration with non-interactive channel selection
NANOCLAW_CHANNELS="telegram" bash migrate-v2.sh

# Or run interactively (clack multiselect)
bash migrate-v2.sh

migrate-v2-reset.sh wipes: data/, logs/, .env, groups/ (restores git-tracked), container/skills/ (restores git-tracked), src/channels/ (restores git-tracked).

It does NOT wipe node_modules/ (expensive to reinstall).

Testing individual steps

Each step is a standalone TypeScript file:

bash
# Run a single step (after pnpm install)
pnpm exec tsx setup/migrate-v2/env.ts /path/to/v1
pnpm exec tsx setup/migrate-v2/db.ts /path/to/v1
pnpm exec tsx setup/migrate-v2/groups.ts /path/to/v1
pnpm exec tsx setup/migrate-v2/sessions.ts /path/to/v1
pnpm exec tsx setup/migrate-v2/tasks.ts /path/to/v1
pnpm exec tsx setup/migrate-v2/channel-auth.ts /path/to/v1 telegram discord

Each prints OK:<details>, SKIPPED:<reason>, or errors to stdout. Exit 0 on success/skip, non-zero on failure.

Debugging

Check what was migrated

bash
# Agent groups
sqlite3 data/v2.db "SELECT * FROM agent_groups"

# Messaging groups + wiring
sqlite3 data/v2.db "SELECT mg.id, mg.channel_type, mg.platform_id, mg.unknown_sender_policy, mga.engage_mode, mga.engage_pattern FROM messaging_groups mg JOIN messaging_group_agents mga ON mga.messaging_group_id = mg.id"

# Sessions
sqlite3 data/v2.db "SELECT * FROM sessions"

# Users and roles
sqlite3 data/v2.db "SELECT * FROM users"
sqlite3 data/v2.db "SELECT * FROM user_roles"

# Session continuation (which Claude Code session will be resumed)
AG_ID=$(sqlite3 data/v2.db "SELECT id FROM agent_groups LIMIT 1")
SESS_ID=$(sqlite3 data/v2.db "SELECT id FROM sessions LIMIT 1")
sqlite3 data/v2-sessions/$AG_ID/$SESS_ID/outbound.db "SELECT * FROM session_state"

# Scheduled tasks
sqlite3 data/v2-sessions/$AG_ID/$SESS_ID/inbound.db "SELECT id, kind, recurrence, status FROM messages_in WHERE kind='task'"

Check handoff

bash
python3 -m json.tool logs/setup-migration/handoff.json

Common issues

Bot doesn't respond after switchover:

  1. Check both services aren't running: systemctl --user list-units 'nanoclaw*'
  2. Check error log: tail logs/nanoclaw.error.log
  3. Check sender policy: sqlite3 data/v2.db "SELECT unknown_sender_policy FROM messaging_groups" — must be public before owner is seeded
  4. Check engage pattern: sqlite3 data/v2.db "SELECT engage_mode, engage_pattern FROM messaging_group_agents" — should be pattern / . for respond-to-everything

Session not continuing from v1:

  1. Check continuation is set: see "Session continuation" query above
  2. Check JSONL exists at the right path: ls data/v2-sessions/<ag_id>/.claude-shared/projects/-workspace-agent/
  3. The v1 session JSONL should be copied from -workspace-group/ to -workspace-agent/ (v2 container CWD is /workspace/agent)

Service switchover revert didn't work:

  1. The v2 service name is nanoclaw-v2-<hash> — find it: systemctl --user list-units 'nanoclaw*'
  2. Manually stop: systemctl --user stop <unit> && systemctl --user disable <unit>
  3. Restart v1: systemctl --user start nanoclaw

Step logs

Each step writes raw output to logs/migrate-steps/<step>.log. Read these when a step fails:

bash
cat logs/migrate-steps/1b-db.log
cat logs/migrate-steps/1d-sessions.log

Key decisions

  • unknown_sender_policy is set to public during migration so the bot responds immediately. The /migrate-from-v1 skill tightens it after seeding the owner.
  • requires_trigger=0 in v1 takes priority over a non-empty trigger_pattern — it means "respond to everything."
  • v1 container_config.additionalMounts is written directly to v2 container.json (same shape).
  • v1 Claude Code sessions are copied from -workspace-group/ to -workspace-agent/ and the session ID is written to outbound.db as continuation:claude so the agent-runner resumes the same conversation.
  • exec claude "/migrate-from-v1" at the end replaces the bash process — write_handoff is called explicitly before exec since EXIT traps don't fire on exec.