[BUG] Fatal crash in file operations after executing SQLite database queries

Environment

• Platform (select one):
• [x] Anthropic API
• [ ] AWS Bedrock
• [ ] Google Vertex AI
• [ ] Other: <!-- specify -->
• Claude CLI version: 1.0.59 (Claude Code)
• Operating System: macOS (Darwin 24.5.0)
• Terminal: zsh
• Node.js version: 21.5.0

Bug Description

Claude Code crashes with a fatal V8 error (v8::ToLocalChecked Empty MaybeLocal) when working with SQLite database operations and file system operations in a SvelteKit
project. The crash occurs consistently when Claude attempts to read files after executing database queries.

Steps to Reproduce

1. Open a project with SQLite database and SvelteKit frontend
2. Execute SQLite queries to investigate duplicate records (e.g., SELECT keyword, country, device, COUNT(*) ... GROUP BY ...)
3. Claude attempts to continue working and read project files
4. Fatal crash occurs with V8 error in node::fs::ReadFileUtf8

Expected Behavior

Claude Code should be able to:

• Execute SQLite queries and continue working without crashing
• Read files normally after database operations
• Handle file system operations without V8 errors

Actual Behavior

Claude Code crashes with:

• FATAL ERROR: v8::ToLocalChecked Empty MaybeLocal
• Stack trace shows failure in node::fs::ReadFileUtf8
• The crash happens in the file reading operation at readFileSync (node:fs:453:20)
• Claude's internal file handling at file:///opt/homebrew/lib/node_modules/@anthropic-ai/claude-code/cli.js

Additional Context

### Related Information

• Project uses SQLite with SQLModel
• Frontend uses SvelteKit
• Database operations were working correctly before the crash
• The crash prevents completion of debugging tasks

### SQL Command Executed Before Crash

``sql
SELECT keyword, country, device, COUNT(*) as count, GROUP_CONCAT(id) as ids
FROM keyword_analyses
WHERE is_latest = 1
GROUP BY keyword, country, device
HAVING COUNT(*) > 1;
``

### Full Error Output

  FATAL ERROR: v8::ToLocalChecked Empty MaybeLocal
  ----- Native stack trace -----

   1: 0x10030a528 node::OnFatalError(char const*, char const*) [/opt/homebrew/Cellar/node/21.5.0/bin/node]
   2: 0x100484d5c v8::Utils::ReportApiFailure(char const*, char const*) [/opt/homebrew/Cellar/node/21.5.0/bin/node]
   3: 0x100319604 node::fs::ReadFileUtf8(v8::FunctionCallbackInfo<v8::Value> const&) [/opt/homebrew/Cellar/node/21.5.0/bin/node]
   4: 0x100092a38 Builtins_CallApiCallbackGeneric [/opt/homebrew/Cellar/node/21.5.0/bin/node]
   5: 0x10858bb7c 
   6: 0x108365134 
   7: 0x10885bb54 
   8: 0x100090b84 Builtins_InterpreterEntryTrampoline [/opt/homebrew/Cellar/node/21.5.0/bin/node]
   9: 0x1001812d8 Builtins_PromiseFulfillReactionJob [/opt/homebrew/Cellar/node/21.5.0/bin/node]
  10: 0x1000b6654 Builtins_RunMicrotasks [/opt/homebrew/Cellar/node/21.5.0/bin/node]
  11: 0x10008e794 Builtins_JSRunMicrotasksEntry [/opt/homebrew/Cellar/node/21.5.0/bin/node]
  12: 0x1005a4a60 v8::internal::(anonymous namespace)::Invoke(v8::internal::Isolate*, v8::internal::(anonymous namespace)::InvokeParams const&) 
  [/opt/homebrew/Cellar/node/21.5.0/bin/node]
  13: 0x1005a5224 v8::internal::(anonymous namespace)::InvokeWithTryCatch(v8::internal::Isolate*, v8::internal::(anonymous namespace)::InvokeParams const&) 
  [/opt/homebrew/Cellar/node/21.5.0/bin/node]
  14: 0x1005c68d4 v8::internal::MicrotaskQueue::RunMicrotasks(v8::internal::Isolate*) [/opt/homebrew/Cellar/node/21.5.0/bin/node]
  15: 0x1005c670c v8::internal::MicrotaskQueue::PerformCheckpointInternal(v8::Isolate*) [/opt/homebrew/Cellar/node/21.5.0/bin/node]
  16: 0x100092b90 Builtins_CallApiCallbackOptimizedNoProfiling [/opt/homebrew/Cellar/node/21.5.0/bin/node]
  17: 0x1087b7fdc 
  18: 0x10008e8ac Builtins_JSEntryTrampoline [/opt/homebrew/Cellar/node/21.5.0/bin/node]
  19: 0x10008e594 Builtins_JSEntry [/opt/homebrew/Cellar/node/21.5.0/bin/node]
  20: 0x1005a4a88 v8::internal::(anonymous namespace)::Invoke(v8::internal::Isolate*, v8::internal::(anonymous namespace)::InvokeParams const&) 
  [/opt/homebrew/Cellar/node/21.5.0/bin/node]
  21: 0x1005a4480 v8::internal::Execution::Call(v8::internal::Isolate*, v8::internal::Handle<v8::internal::Object>, v8::internal::Handle<v8::internal::Object>, int, 
  v8::internal::Handle<v8::internal::Object>*) [/opt/homebrew/Cellar/node/21.5.0/bin/node]
  22: 0x10049893c v8::Function::Call(v8::Local<v8::Context>, v8::Local<v8::Value>, int, v8::Local<v8::Value>*) [/opt/homebrew/Cellar/node/21.5.0/bin/node]
  23: 0x100228c68 node::InternalCallbackScope::Close() [/opt/homebrew/Cellar/node/21.5.0/bin/node]
  24: 0x1002290e8 node::InternalMakeCallback(node::Environment*, v8::Local<v8::Object>, v8::Local<v8::Object>, v8::Local<v8::Function>, int, v8::Local<v8::Value>*, 
  node::async_context) [/opt/homebrew/Cellar/node/21.5.0/bin/node]
  25: 0x10024085c node::AsyncWrap::MakeCallback(v8::Local<v8::Function>, int, v8::Local<v8::Value>*) [/opt/homebrew/Cellar/node/21.5.0/bin/node]
  26: 0x1003eb124 node::StreamBase::CallJSOnreadMethod(long, v8::Local<v8::ArrayBuffer>, unsigned long, node::StreamBase::StreamBaseJSChecks) 
  [/opt/homebrew/Cellar/node/21.5.0/bin/node]
  27: 0x1003eb4dc node::EmitToJSStreamListener::OnStreamRead(long, uv_buf_t const&) [/opt/homebrew/Cellar/node/21.5.0/bin/node]
  28: 0x10045e0f0 node::crypto::TLSWrap::ClearOut() [/opt/homebrew/Cellar/node/21.5.0/bin/node]
  29: 0x10045e598 node::crypto::TLSWrap::Cycle() [/opt/homebrew/Cellar/node/21.5.0/bin/node]
  30: 0x10045cbb8 node::crypto::TLSWrap::OnStreamRead(long, uv_buf_t const&) [/opt/homebrew/Cellar/node/21.5.0/bin/node]
  31: 0x1003f19cc node::LibuvStreamWrap::OnUvRead(long, uv_buf_t const*) [/opt/homebrew/Cellar/node/21.5.0/bin/node]
  32: 0x1003f1674 node::LibuvStreamWrap::ReadStart()::$_1::__invoke(uv_stream_s*, long, uv_buf_t const*) [/opt/homebrew/Cellar/node/21.5.0/bin/node]
  33: 0x1034bb618 uv__stream_io [/opt/homebrew/Cellar/libuv/1.47.0/lib/libuv.1.dylib]
  34: 0x1034c21c0 uv__io_poll [/opt/homebrew/Cellar/libuv/1.47.0/lib/libuv.1.dylib]
  35: 0x1034b2bc8 uv_run [/opt/homebrew/Cellar/libuv/1.47.0/lib/libuv.1.dylib]
  36: 0x1002299dc node::SpinEventLoopInternal(node::Environment*) [/opt/homebrew/Cellar/node/21.5.0/bin/node]
  37: 0x100351ad4 node::NodeMainInstance::Run(node::ExitCode*, node::Environment*) [/opt/homebrew/Cellar/node/21.5.0/bin/node]
  38: 0x10035183c node::NodeMainInstance::Run() [/opt/homebrew/Cellar/node/21.5.0/bin/node]
  39: 0x1002cae80 node::Start(int, char**) [/opt/homebrew/Cellar/node/21.5.0/bin/node]
  40: 0x18b096b98 start [/usr/lib/dyld]

  ----- JavaScript stack trace -----

  1: readFileSync (node:fs:453:20)
  2: readFileSync (file:///opt/homebrew/lib/node_modules/@anthropic-ai/claude-code/cli.js:680:7096)
  3: QF (file:///opt/homebrew/lib/node_modules/@anthropic-ai/claude-code/cli.js:756:376)
  4: file:///opt/homebrew/lib/node_modules/@anthropic-ai/claude-code/cli.js:2239:997
  5: processTicksAndRejections (node:internal/process/task_queues:95:5)