Brings the wiki-expansion pages onto current main WITHOUT the stale baggage the
original feature/wiki-expansion branch carried (it predated the rename + date
PRs and would have reverted them). Cherry-picked only the 9 genuinely-new pages:
contracts, store-schema, external-mcp, operator-cli, tui, runtime-inventory,
skills-catalog, vault-provision, deployment. Added them to index.md.
Fixed on the way in: vault-provision referenced the pre-rename
VAULT-PROVISION-FIRST-PROOF → repointed to VAULT-PROVISION-RUNBOOK. (No US dates
in these pages.)
Gates: wiki-lint --strict clean (131 pass); markdown format clean.
