FastEdit 0.4.0

Added

• fast_rename_all MCP tool + fastedit rename-all CLI — cross-file symbol rename. Walks every supported code file under a directory, applies word-boundary rename, skips matches inside strings/comments/docstrings via tree-sitter. Prunes .git, node_modules, __pycache__, target, dist, vendor, and other common vendor/build dirs. Also prunes any directory containing a pyvenv.cfg (PEP 405 venv marker) so non-standard venv names like .venv311, myenv, virtualenv don't escape the filter. Pass --dry-run / dry_run=True to preview. Symlinks are not followed (prevents double-rename). Same-name rename is a guarded no-op. Not scope-aware (text matching with string/comment skip zones, not LSP) — unique names are safer than short common identifiers. Instant, no model. 11-case test suite covers substring collisions, dotfile dirs, binary files, and venv pruning.

Fixed

• Multi-line signature auto-preserve bug. fast_edit with replace='func_name' and a body-only snippet corrupted output when the target had a multi-line parameter list. The auto-preserve path at chunked_merge.py:496 grabbed only the first line (def foo() and dropped the continuation, producing unclosed parens. Replaced the line-grab heuristic with a tree-sitter lookup of the function's body field. Verified across all 13 supported languages: Python, JavaScript, TypeScript, Rust, Go, Java, Ruby, Swift, C, C++, C#, PHP, plus Kotlin (uses unnamed function_body child — handled by fallback) and Elixir (parses def foo(a) do ... end as a call with a do_block child — handled by fallback). 14-case parametrized regression lock plus 5 scenario tests.