Captures the 5 patterns that burned the most time in the
startup_speedup_20260606 sub-track 4 work:
1. ALWAYS use manual-slop_edit_file, not custom scripts
(custom scripts fail silently on indent/EOL/whitespace drift)
2. The decorator-orphan pitfall
(inserting before 'def foo' leaves @property decorating YOUR new method)
3. ast.parse() is not enough
(semantic errors aren't caught; import + instantiate + call after every edit)
4. The git restore trap
(don't run git status/restore while a user is mid-conversation)
5. Small verified edits beat big scripts
(edit_workflow says 3-10 lines; if you write 200 lines of script, wrong tool)
Also adds 2 new anti-patterns to the Critical list in AGENTS.md and
3 new sections to conductor/edit_workflow.md (decorator-orphan,
ast.parse-not-enough, set_file_slice-is-literal).
ed