Empirical failure: rename_object Application/ST_Sample -> ST_SampleRenamed updated the struct's own TYPE header but Application/PLC_PRG kept 's : ST_Sample;' -- the old name -- breaking the project.
Root cause: scriptengine.ScriptObject.rename()/set_name() is a node-local rename only; the IDE's project-wide Rename refactor lives above the scripting layer (no documented find_references() / refactor variant).
Fix: after the local rename succeeds, walk every text-bearing object (textual_declaration / textual_implementation), word-boundary regex-replace \bOldName\b -> NewName via a callback (so backslashes in NewName don't get interpreted as backrefs), set_text the changed nodes, save once. New optional updateReferences param defaults to true; pass false for the legacy minimal-rename behaviour.
Docs: https://content.helpme-codesys.com/en/ScriptingEngine/ScriptObject.html
Risk: false positives in comments / string literals are theoretically
possible but rare for IEC identifiers. Documented in the tool description.
The target node itself is skipped during the references walk (matched by
get_id()) so the rename's already-updated TYPE/FUNCTION_BLOCK/PROGRAM
header isn't double-rewritten.
Two new vitest e2e checks added: assert UPDATE_REFERENCES=1 renders the
re.escape + word-boundary regex, and UPDATE_REFERENCES=0 still produces
a fully-substituted script with no leftover placeholders.
### Manual smoke test
1. Open a project with: a DUT 'ST_Sample', a POU 'PLC_PRG' with
'VAR s : ST_Sample; END_VAR', and a third POU referencing 'ST_Sample.foo'.
2. mcp__codesys__rename_object objectPath=Application/ST_Sample
newName=ST_SampleRenamed.
3. Expect SCRIPT_SUCCESS with 'References Updated In: 2 node(s)'.
4. mcp__codesys__compile_project should succeed (no unresolved-symbol
errors for ST_Sample).
5. With updateReferences=false, the same rename should leave PLC_PRG
stale and compile_project should fail -- validates the opt-out.
6. Word-boundary check: rename 'Foo' -> 'Bar' must NOT touch 'FooBar'
or 'BarFoo' anywhere.
0f8981d6bd