Close patch 0.1.1 Rust publication

[docushell-dev]

Summary

• record closeout evidence for published Rust crates ethos-doc-core, ethos-verify, and ethos-pdf at 0.1.1
• add live crates.io closeout guard and wire it into release-candidate-prep
• retain public installation wording and unrelated public/support blockers

Registry evidence

• ethos-doc-core = 0.1.1
• ethos-verify = 0.1.1
• ethos-pdf = 0.1.1

Boundaries

• keeps public installation wording pending a separate wording/availability record
• keeps hosted surfaces, production positioning, Windows artifacts, bundled PDFium, ethos-doc, ethos-rag, public benchmark reports, and public benchmark claims blocked

Tests

• python3 .github/scripts/test_patch_0_1_1_crates_publication_closeout.py
• python3 .github/scripts/test_patch_0_1_1_crates_publication_approval_decision.py
• python3 .github/scripts/test_patch_0_1_1_crates_publication_approval_request.py
• cargo search ethos-doc-core --limit 1
• cargo search ethos-verify --limit 1
• cargo search ethos-pdf --limit 1
• make light-check PYTHON=python3
• make release-candidate-prep PYTHON=python3
• git diff --check