boost v1.2.209

What's changed

Other changes

• fix(mcp): name the seed and the rule offer in register --dry-run (#1261)
• fix(taps): handle stale git locks, local edits and planted files in tap clones (#1260)
• fix(agents): sweep each aliased skills dir once, and judge boost links with both sides resolved (#1259)
• fix(uninstall): refuse a rule/workflow uninstall under a read-only store (#1258)
• fix(state): an unreadable lock or config is not corrupt — refuse, and name the chmod (#1257)
• Release train 2026-10-24a: round-27 fixes (#1263)