[Bug] HeavySwarm accepts img, threads it down two levels, then never passes it to the agents

[ayaangazali]

HeavySwarm.run(task, img=...) accepts an image, documents it, threads it down two levels — and then neither executor passes it to the agents. Every visual-analysis task runs blind.

The path

run(task, img)                                    heavy_swarm.py:281
  -> _execute_agents_parallel(..., img=img)              :424
       -> _execute_agents_basic(questions, agents, img)  :557
            -> agent.run(question)                       :603   <- img dropped
       -> _execute_agents_with_dashboard(..., img)       :554
            -> agent.run(question)                       :930   <- img dropped

img is a declared parameter on all three functions and documented on each ("Image input if needed for visual analysis tasks"), so it looks wired up at every level except the last one that matters.

Verification

Stub agents that record what they receive, driving both executors directly:

BEFORE   basic executor     -> img seen by agents: {None}
         dashboard executor -> img seen by agents: {None}

AFTER    basic executor     -> img seen by agents: {'chart.png'}
         dashboard executor -> img seen by agents: {'chart.png'}

Both paths were broken and both are fixed; I checked the dashboard variant separately rather than assuming it followed the basic one.

Fix

agent.run(question, img=img) at both sites. img is already in the enclosing scope of each, and Agent.run's img defaults to None, so the no-image case is byte-for-byte what it was.

Same defect as #1822 (SequentialWorkflow.run accepted imgs and dropped it), which you merged — this is the HeavySwarm instance of it.

No test file: two-line change, no new function.

Adjacent finding

Filed as #1903 rather than folded in: execute_question_generation(self, task) has no img parameter at all, so the decomposer writes the four (or fifteen) sub-questions without ever seeing the image. That is a design change — the image has to reach the question schema and prompt — so it needs your call, not a quiet expansion of this diff.

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