v1.1.0

Tracks the MCP server's 1.1.0 release. Two of that release's tool changes break
skills written against the old behaviour, and one documented recipe stopped working
outright, so this is a correctness pass over the skills and harness rather than new
capability.

Changed

• The event verification recipe no longer subscribes to events that do not exist.
  events_subscribe now rejects the 11 event types the server declares but never
  emits, and the rejection covers the whole call — one stale name takes the valid
  types in the same array with it. The deliverable set is block.break, block.use,
  player.chat, player.join, player.leave, and the five server.* lifecycle
  events.
• system-redstone/reference/verification.md: the file's only worked example
  subscribed to entity.death and failed at step one. Replaced with a block.use
  example that runs. The mob-farm and sorter bullets were built entirely on rejected
  types and could not be reworded — there is no entity or container event, so both now
  point at sampling (entity_query, inventory_count_items), which is the only thing
  that actually verifies those outcomes.
• exec-inspect/SKILL.md, reference/contract-checks.md and
  system-redstone/reference/java-redstone.md: same substitution. The
  java-redstone bullet mattered disproportionately — it is the index an agent reads
  before opening verification.md, so it seeded the bad names first.
• reference/terrain/palettes.md: biome examples extended with the fields the
  server now returns (precipitation, waterColor, colour overrides), and a note
  that a flat downfall: 0 across every biome means an older mod jar.

Fixed

• tools/builder/harness.py pre-filters event types against the deliverable set.
  A legacy contract row previously failed as "could not subscribe", which is
  indistinguishable from a transport failure — so a stale row read as a broken
  mechanism rather than a stale row.
• tools/itest/cases/level.py was asserting only that plains appeared in the
  biome listing, which passed even with no dimension filtering at all because the
  scratch dimension is the overworld. It now also asserts no foreign biomes leak in,
  and a new case checks the nether returns its own small set.
• tools/itest/cases/loot.py described the old "Definition not available" bug as
  current behaviour.
• Tool counts in reference/execution/engine-limits.md and skills/setup-server
  were off by one: 194 tools declared (188 server endpoint plus 6 client-side), with a
  lean default surface of ~104.