0.5.0

0.5.0 — 2026-04-23

Added

• fast_move_to_file MCP tool + fastedit move-to-file CLI — relocate a symbol cross-file with automatic import rewrites across all 13 supported languages (Python, TS/JS, Java, Kotlin, Rust, Go, Swift, C#, Ruby, PHP, Scala, Elixir, Lua, C/C++). Rust use trees handled via tree-sitter: simple, braced, arbitrary-depth nested, aliased (as Name), and wildcard (*) — the wildcard case appends an explicit import alongside the glob and surfaces an advisory note. Pass --dry-run for preview.
• --only <kind> on fast_rename_all / kind_filter on fast_rename_all MCP tool — restrict rename to class | function | method | variable. Resolved via tldr's structural classification, not regex.
• --dry-run on fastedit rename / dry_run=True on fast_rename MCP tool — parity with rename-all.
• --force on fastedit delete / force=True on fast_delete — override the new cross-file caller safety check.

Changed

• fast_rename and fast_rename_all AST-verified across all 13 supported languages via tldr references. Strings/comments/docstrings are structurally skipped using tldr's confidence axis — real code hits at 1.0, string/comment substring noise at 0.5. On AST-native langs (Python, TS/JS, Go, Rust), refs are classified as function/method/call/import/read/variable; on the other langs the same confidence filter still gives AST-verified-quality matching. No per-language AST walk in fastedit.
• fast_delete runs a cross-file caller safety check before deleting. Refuses with a structured caller-location message (file:line:kind, up to 10 rows) if the symbol has references in other files, and suggests fast_rename_all as a migration path. Pass --force / force=True to bypass. Falls open with a warning note when tldr is unavailable — infra failures never fail-closed. Works across all 13 languages.
• fast_edit appends an impact note when replace=<name> changes the function's signature line. Reports caller counts and points at tldr impact / fast_search for detailed review. Purely informational — the edit always proceeds. Signature detection outsourced to tldr structure (13/13 lang coverage via tldr's per-definition signature field). Hot path stays subprocess-free for body-only edits (0.052ms p50 overhead verified on unchanged-signature edits).
• Architectural refactor: fastedit now outsources per-language AST work to tldr wherever tldr already exposes the primitive. Kind classification, signature extraction, reference discovery, and import location all go through tldr. Net code reduction in caller_safety.py and rename.py despite the feature additions.
• MCP server instructions, per-tool descriptions, CLI help, README, and claude-skill/SKILL.md all synchronized to reflect the new capabilities.

Fixed

• UTF-8 BOM line-1 rename bug — _char_col_to_byte_offset was translating character index to byte offset while tldr already emits byte columns, causing an off-by-3 misalignment on line-1 symbols of BOM-prefixed files. Replaced with _tldr_col_to_byte_offset that uses tldr's column directly. Multi-byte chars before the symbol on later lines are handled correctly too.
• delete_symbol no longer drops @decorator / @annotation lines above the deleted symbol. Root cause: upstream tldr structure reported the wrong line-span for decorated defs. Switched to in-memory AST via get_ast_map_from_source.
• get_ast_map debug log no longer leaks to stdout on empty/near-empty files (surfaced during fast_move_to_file smoke testing). Demoted from _log.warning to _log.debug; a regression test locks stdout cleanliness.
• Zero-match rename-all message no longer says "word-boundary" (stale from the pre-AST-verified impl). Updated to "AST-verified via tldr — strings/comments/vendor dirs excluded"; regression test locks the wording for both the MCP and CLI surfaces.
• Rust use tree rewriting for fast_move_to_file now handles nested (arbitrary depth), aliased (as Name), and wildcard (*) cases via tree-sitter-rust. Wildcard case appends an explicit import for the moved symbol alongside the existing glob and surfaces an advisory note in the plan.

Tests

• 756 passed (up from 598 in 0.4.1, +158 new). Zero failures, zero xfails. 29 skipped (all intentional — per-language paths where a subsystem genuinely doesn't apply, not hidden failures).
• 91 tests from the hardening milestone (65 cross-language parametrized, 15 adversarial, 5 property/invariant, 6 tool-integration), 24 from the outsource refactor, plus regression locks on message wording, BOM line-1, decorator preservation, and Rust complex use cases.
• Language coverage matrix published at docs/testing-matrix.md: M1, M2, M3, and M4 all verified at 13/13 languages.