v0.7.9 - Cloudflare Bulk Redirects (account-level)

Adds cf_bulk_redirect_upsert: create/append many redirects at once via an account-level Bulk Redirect List, wired into the account http_request_redirect ruleset (for site migrations). Gated behind SEO_MCP_ALLOW_DESTRUCTIVE and a confirm value equal to list_name. Pre-validates every item locally and rejects the whole batch on any bad item (never half-applies); validates list_name against Cloudflare's allowed charset; supports dry_run. cf_list_redirects now also surfaces account Bulk Redirect lists. Completes CF redirect support (single redirects shipped in 0.7.8). 55 -> 56 tools. New scopes: Account Rulesets:Edit + Account Filter Lists:Edit. See CHANGELOG.md.