v0.3.0

What's Changed

• Refactor into per-tool files — split monolithic tools.go/resources.go into tool_bash.go, tool_file_read.go, tool_file_edit.go, tool_file_write.go, tool_grep.go, tool_glob.go, tool_upload.go, tool_parse.go, server.go
• New file_write tool — create or overwrite files with automatic parent directory creation
• New bash_status tool — check results of background bash commands
• bash upgrades — run_in_background, description parameter, MCP progress notifications during long-running commands
• file_edit upgrades — replace_all parameter for bulk replacements
• file_read upgrades — binary/image detection with base64 image content, PDF page range support via pdftotext
• grep upgrades — output modes (content/files_with_matches/count), context lines (-A/-B/-C), case-insensitive search, head_limit
• glob upgrades — recursive ** patterns, modification time sorting
• upload fix — proper data: URI base64 decoding
• Sandbox session persistence — survives server restarts via temp file, supports TENSORLAKE_SANDBOX_ID env var
• Harness engineering tool descriptions — instruct AI clients to prefer dedicated tools over bash
• Per-host MCP setup docs — Claude Desktop, Claude Code, and Cursor config examples
• Comprehensive tests — unit tests for pure functions (no API key needed) + integration tests for all tools
• Fix CleanupSession error handling and move API key check to main
• Fix nil pointer dereference in fetchParseResult

Full Changelog: v0.1.1...v0.3.0