Fix recursion SVG loop rendering for _~_ diagrams

[Copilot]

process = _~_; SVG output omitted the visible feedback loop because recursive connections were not marked as real endpoints and lacked a leftward offset, so the collector pruned the traits.

• Changes

  • Mark feedback and feedforward endpoints as real inputs/outputs during trait collection in recSchema so recursive links are retained.
  • Apply a consistent negative horizontal offset for feedback/feedforward wiring to render the loop visibly.

• Illustration

  process = _~_;  // now produces an SVG with a visible leftward feedback loop

Original prompt

---

This section details on the original issue you should resolve

<issue_title>Incorrect SVG diagram</issue_title>
<issue_description>For this codeprocess = _~_;</issue_description>

Comments on the Issue (you are @copilot in this section)

• Fixes Incorrect SVG diagram #1154

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[sletz]

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