- Refactored chunk anchor format from bracket notation to marker-based syntax with +++ and --- delimiters.
- Renamed chunk edit regions from @container/@prologue/@body/@epilogue to @head/@inner/@tail for clearer semantics.
- Simplified line-number selector resolution to auto-convert line targets to chunk paths with checksum format.
- Removed PI_DEV debug addon loading logic; PI_DEV now only enables loader diagnostics without changing candidate filenames.
- Added full-name aliases for chunk kind patterns (decls, expr, fn, meth, mod, params, ret, stmts, var) alongside abbreviated forms.
- Refactored sanitize_node_kind() to return &str instead of String; adjusted identifier passing logic across AST modules.
can1357
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