Extends the pump beyond top-level vars: when a var's declared type
resolves to another mirror .st file, we descend one level and read
each of that type's vars as <var>.<member>.
Parser: parseVarDecls(text) now returns name + declared type per
decl. ARRAY/POINTER/REFERENCE wrappers stripped to the inner type.
parseVarNames is kept as a thin wrapper for the existing callers.
Pump: new resolveTypeMirror(typeName, deviceRoot) dep. Pump itself
doesn't know how to find a type's source -- the caller plugs in a
strategy. server.ts wires a recursive walk under the device root
looking for '<typeName>.st'; the mirror layout guarantees stable
filenames for POU/FB/DUT (every code-bearing object).
Pump's deviceRootFor(absPath) parses the abs path back to the
device root by locating the '/mcp-mirror/<device>/' segment. If
that fails we fall back to the file's parent dir (still works for
same-folder type lookups, just won't find types in sibling folders).
Constructor now accepts partial deps and fills in safe defaults
(no-op resolveTypeMirror -> never descend, matching v0.3
top-level-only behaviour). Existing tests don't need to change.
407/407 tests pass; new coverage:
- parseVarDecls: name+type extraction, ARRAY/POINTER/REFERENCE
stripping, AT %loc prefix, missing-type pathological case
- LiveValuesPump.tick: descends when resolver returns content;
doesn't descend when resolver returns null (primitives)
614a8458f0