docs(diagrams): refresh strategy and PITWALL diagrams

[VforVitorio]

What

• Restore the detailed editable diagrams and align their strategy, agent-schema, and PITWALL paths with the current implementation.
• Update the multi-agent reference and diagram fidelity notes.
• Audit scripts/ for dead or low-value measurement files. No safe deletions were identified.

Why

The previous diagrams described stale data contracts, scoring semantics, and PITWALL transport behavior. This refresh preserves the full engineering detail while correcting those contracts.

Scripts audit

• Inventory: 53 files (48 Python), including 12 measure_*.py scripts.
• Removed: 0 files, 0 lines. The measurement scripts are tied to current issues, reports, tests, reproducibility, or distinct diagnostics. Two small duplicated helpers were retained because the scripts serve separate reproducibility/trace workflows.

Validation

• uv run pytest -q tests/surfaces/test_diagrams_no_retired_surface.py: 20 passed.
• All six changed Draw.io sources parse with zero dangling edges.
• Visible text matches across all three HTML/SVG export pairs.
• The published strategy pipeline was opened in diagrams.net; a-n29-r is routed around N27 and enters the router from the side. The orchestrator HTML render also confirms the fallback fits its card.
• Independent Astra gate: D1-D8 GO for diagram commit 11ea8aa.
• Browser console and a new full render of every export were not captured in the final gate; no claim is made about those checks.
• git diff --check: clean.

Related: #1253

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[chatgpt-codex-connector]

Codex Review Summary

This comment shows the latest Codex review activity on this pull request.

Review	Status	Commit	Review trigger
📝 Code Review	✅ Completed 2026-09-27T16:59:13.095261Z	881df7f	PR opened

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[chatgpt-codex-connector]

💡 Codex Review

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Reviewed commit: 881df7fe92

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[chatgpt-codex-connector]

Show all agent inputs to rich synthesis

The rich pipeline does not split inputs this way: _build_orchestrator_prompt serializes the N25 pace, N26 tyre, N27 situation, and N28 pit blocks—including their reasoning—directly into SUB-AGENT OUTPUTS, in addition to supplying the Monte Carlo scores. This new description and the matching flow imply that N25–N28 affect synthesis only through Monte Carlo, which is particularly misleading for N25 because its sampled pace is currently unused by the scorer. Add a direct N25–N28 input to synthesis or revise the description and corresponding diagram/export.

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