Balance scalable electricity generation in Factory Scenario

[ApocDev]

Problem

Factory Scenario treats pyops-electricity as a free boundary. It excludes electricity goal response columns, retains existing generator goals unchanged, and reports the remaining grid demand as an external raw import even when a configured electricity block has scalable generation.

In the active factory, block 35 produces 300 MW: 190 count-pinned fish turbines provide a fixed 228 MW while unpinned steam generation supplies 72 MW. The block solver already supports this mixed fixed/scalable goal, but Scenario discards its electricity response and leaves a 401.4005 MW deficit.

Expected behavior

• Preserve count-pinned generation as fixed output.
• Scale unpinned generation in configured electricity blocks to meet remaining grid demand.
• Include induced electricity demand from scaled fuel/material suppliers and iterate to convergence.
• Keep an external import only when configured generation cannot cover demand.
• Keep heat block-local/free unless separately redesigned.

Acceptance criteria

• Active factory Scenario proposes a higher electricity goal for block 35 and closes the grid deficit within validation tolerance.
• Existing mixed pinned/unpinned block semantics are preserved.
• Cyclic power-production dependencies converge or produce a clear validation failure.
• Focused solver and browser coverage passes, with solver documentation updated.

[ApocDev]

Implemented and verified in commit b5b1d2b. Factory Scenario now scales configured electricity suppliers while retaining count-pinned generation and iterating coupled power demand to convergence.