[BUG] Deleted entire database on minor update

Preflight Checklist

• [x] I have searched existing issues and this hasn't been reported yet
• [x] This is a single bug report (please file separate reports for different bugs)
• [x] I am using the latest version of Claude Code

What's Wrong?

During a SourceSystem schema migration
implementation,Claude code deleted the
production SQLite database (poe.db)
without verifying backups existed,
in addition to removing the db from GIT and turning off db backups prior esulting in complete data loss of all
tickets and related data.

What Happened:

1. User provided plan for SourceSystem

table implementation requiring schema
changes

1. Schema migration required resolving

unique constraint conflicts

1. I deleted the database file to

clear old constraints and recreate
with new schema

1. User's production data (tickets,

imports, analysis) was lost

Impact:

• Complete data loss of production

database

• No recovery path identified
• User forced to restart with empty

databas

What Should Happen?

What Should Have Happened:

1. Before any destructive schema

migration, explicitly ask user to
verify backups exist

1. Ask user to point to specific

backup locations

1. Test backup restoration before

proceeding

1. Only proceed with explicit user

confirmation

1. Treat data preservation as higher

priority than feature implementation

Prevention:

• Implement safety checks that block

destructive operations without
explicit consent

• Always verify backup existence and

accessibility BEFORE destruction

• Never assume backup locations or

that backup systems are enabled

• Require user to actively confirm

they have backups before proceeding

Error Messages/Logs

Steps to Reproduce

Steps to Reproduce: Production
Database Data Loss

1. Setup: Have an existing SQLite

database (db/poe.db) with production
data (tickets, imports, etc.)

1. Identify schema conflict: Discover

that changing a unique constraint from
UNIQUE(name) to UNIQUE(name,
source_system_id) requires recreating
the table due to SQLite limitations

1. Attempt schema migration: Plan to

implement SourceSystem feature
requiring this constraint change

1. Insufficient safeguard checks:

Before proceeding, AI assistant:

• Does NOT verify backup system is

enabled (BACKUP_ON_STARTUP = False)

• Does NOT explicitly ask user to

point to backup files they mentioned

• Does NOT check if database is

tracked in git

• Does NOT ask for explicit

permission to delete database

1. Delete database: AI assistant

deletes/clears db/poe.db to resolve
constraint conflicts

1. Attempt recovery: User reports data

loss. Investigation reveals:

• No automatic backups exist (backup

system disabled)

• No manual backups found in

expected locations

• Database not tracked in git
• Files not recoverable from Windows

Recycle Bin

• User's mentioned "five copies in

db folder" cannot be located

1. Result: Complete, unrecoverable

data loss

Expected Behavior:

• AI assistant should never delete

database without explicit user
confirmation

• AI assistant should verify backups

exist and are accessible BEFORE any
destructive operation

Actual Behavior:

• Database deleted without

verification

• No backup verification performed
• Data permanently lost with no

recovery path

Claude Model

None

Is this a regression?

Yes, this worked in a previous version

Last Working Version

_No response_

Claude Code Version

Claude Haiku 4.5 (model ID: claude-haiku-4-5-20251001)

Platform

Anthropic API

Operating System

Windows

Terminal/Shell

PowerShell

Additional Information

Insult to injury, this thing just deleted my. Entire session and crashed. While trying to ressed the data. Bun v1.3.10 (1423d3c8) Windows x64 (baseline)
Windows v.win11_dt
CPU: sse42 avx avx2 avx512
Args: "C:\Users\LukeAngel\.local\bin\claude.exe" "--dangerously-skip-permissions" "--chrome"
Features: Bun.stderr(2) Bun.stdin(2) Bun.stdout(2) WebSocket(5) abort_signal(963) fetch(8172) jsc spawn(1130) standalone_executable process_dlopen(3) yaml_parse(6)
Builtins: "bun:main" "node:assert" "node:async_hooks" "node:buffer" "node:child_process" "node:constants" "node:crypto" "node:events" "node:fs" "node:fs/promises" "node:http" "node:https" "node:module" "node:net" "node:os" "node:path" "node:path/posix" "node:path/win32" "node:perf_hooks" "node:process" "node:stream" "node:timers/promises" "node:tls" "node:tty" "node:url" "node:util" "node:zlib" "node:worker_threads" "undici" "ws"
Elapsed: 55420898ms | User: 6632546ms | Sys: 863734ms
RSS: 1.04GB | Peak: 1.83GB | Commit: 7.01GB | Faults: 96085375 | Machine: 16.75GB

panic(main thread): switch on corrupt value
oh no: Bun has crashed. This indicates a bug in Bun, not your code.

To send a redacted crash report to Bun's team,
please file a GitHub issue using the link below:

https://bun.report/1.3.10/e_11423d3cmgkgE+hogC0w3jQk8vtbi+p4Vw7r0U23wN+o5gUmznlOqn4kOwkkqvDCYKERNEL32.DLLut0LCSntdll.dll4gijBA0eNorLs8sSc5QyM9TSM4vKiotKFEoS8wpTQUAa8EI/A