Phase 9: crafted summons for the legendaries

Adrian, 2026-11-09: legendaries, mythicals, Ultra Beasts and Paradox Pokemon
come from crafted summons. 22 Sigils (Naganadel evolves from Poipole), one
item told apart by custom data, from world/summons.json through
tools/summons.py: late-game recipes in three tiers (Lv 70, 80, 90), each used
in a fitting zone. A summoned legend fights as a boss (area attacks by level
and type, arena 32, the Guardian's Ward) but can be caught; on capture it
loses every boss mark. One at a time within 96 blocks.

Quest book: a Legends chapter, one quest per Sigil (97 quests). JEI lists each
Sigil as its own item, and Island Drops says where a legend is summoned; drops
Cobblemon names but doesn't have (Ho-Oh's Sacred Ash) get no slot.

Self-tests every_implemented_pokemon_is_obtainable (spawn, fossil or Sigil for
every implemented species) and sigil_summons_a_catchable_legend. Self-tests
and the island check pass.

Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>

README.md

@@ -118,6 +118,13 @@ python3 tools/quests.py
 ```
 Generates the quest book (Phase 8) from `docs/quests.yaml` into `pack/config/ftbquests/quests/`, and the hidden advancements quests check. `tools/build.py` runs it. `--pull <FTB Quests folder>` first copies node positions moved in the in-game editor back into `docs/quests.yaml` (`tools/prism_instance.py` does it from the instance before each sync); `--check` fails if the generated files are out of date.
 
+## Legend summons
+
+```bash
+python3 tools/summons.py && python3 tools/zone_bosses.py
+```
+Writes the Sigils' recipes and data and their fights (Phase 9) from `world/summons.json`. Then run `tools/jei_sources.py` and rebuild.
+
 ## JEI drop sources
 
 ```bash