`graphify affected` (blast radius) was blind to a function passed BY NAME as
a call argument — `executor.submit(fn)`, `Thread(target=fn)`, `map(fn, xs)`,
callbacks — so those callers were silently dropped from the affected set (an
under-counting blast radius reads complete while missing exactly where
regressions hide). Capture them as a distinct `indirect_call` relation
(INFERRED, context "argument"), kept separate from `calls` so strict
call-graph queries stay precise, and add it to DEFAULT_AFFECTED_RELATIONS.
Hardened over the original PR against the name-collision false edge (the
Doxygen #3748 trap): emit only when the argument identifier resolves to a
callable definition AND is not shadowed by a parameter or local binding in
the enclosing function. So `def via(pool, handler): pool.submit(handler)`
(handler is the param, not the module function) and `process(config)` where
`config` is local data emit no edge, while a genuine module function passed
by name still resolves. Dedup-safe against existing direct `calls` edges.
Python only; dict-literal / getattr-by-string / decorator dispatch deferred.
Co-Authored-By: Claude Opus 4.8 (1M context) <noreply@anthropic.com>
