fix: harden reader residue and support wording guards

[Stahl-G]

Summary

• treat Evidence Span Registry span IDs (ESP-###-##) as reader-facing residue before delivery bundling
• reject Claim Ledger entries with non-string required fields before support-wording projection
• add regressions for direct reader residue detection, bundle archive refusal, and support_wording status/Quality Panel propagation

Validation

• python3 -m pytest -q tests/test_reader_final_gate.py tests/test_report_bundles.py tests/test_support_wording.py
• python3 -m pytest -q tests/test_quality_panel.py tests/test_status.py -k "support_wording or reader"
• python3 scripts/check_release_consistency.py --no-tag
• python3 scripts/check_product_baseline.py
• python3 scripts/check_briefloop_skill_freshness.py
• python3 scripts/check_skill_contract.py
• python3 scripts/check_version_consistency.py
• PYTHONPATH=src python3 scripts/check_capabilities.py
• python3 scripts/check_runtime_asset_parity.py
• python3 scripts/generate_agent_configs.py --check
• python3 scripts/sync_hermes_plugin_skills.py --check
• python3 -m compileall -q src tests
• git diff --check
• python3 -m pytest -q