rf-01: add ECONNREFUSED to isTransientNetworkError in anthropic-shared.ts,
aligning with the NETWORK_RE pattern in error-classifier.js
rf-02: add scripts/validate-model-cost-table.mjs to report coverage gaps
and price divergence between model-cost-table.js and models.generated.ts;
add 'validate-cost-table' script to package.json
rf-11: extract 10 pure resource-display utility functions from
interactive-mode.ts into packages/coding-agent/src/modes/interactive/
resource-display.ts, reducing interactive-mode.ts by ~282 lines
All 4375 tests pass.
Co-authored-by: Copilot <223556219+Copilot@users.noreply.github.com>
