[Nuulz]

Fixes #398. One commit per bug. Every fix has a test that fails without it, and the full stress run from the issue passes on a vanilla 26.2 server.

1. Global palette bit width (azalea-world)

1. Add global_bits_per_entry() to PalletedContainerKind.
2. BlockState: ceillog2(MAX_STATE + 1), which is 15 in 26.2 and matches vanilla's ceillog2(registry size).
3. Biome: 16. azalea doesn't know the biome registry size at compile time, and 16 bits covers any datapack.
4. In on_resize, when the new kind is Global, use max(requested, global_bits_per_entry()) instead of bits_per_entry + 1.

Test test_resize_to_global_fits_any_state: fill 256 states, set MAX_STATE, check the palette is global at 15 bits and every value reads back. Without the fix it hits the same panic as the live bot.

Live: the bot used to die around the 188th distinct block. It now gets through all 1200 setblocks.

2. Particle options (azalea-entity)

1. Add PowerParticle { power }, SpellParticle { color, power } and TrailParticle { target, color, duration }.
2. Give data to the eight variants: DragonBreath(PowerParticle), Effect / InstantEffect(SpellParticle), TintedLeaves / Flash(ColorParticle), Trail(Box<TrailParticle>), DustPillar / BlockCrumble(BlockParticle).
3. Box TrailParticle like VibrationParticle, so EntityDataValue stays at 24 bytes (there's a const assert for that).
4. Update From<ParticleKind> to use Default for the new data.

Tests: read flash with an ARGB int and check nothing is left over, plus a trail roundtrip.

Live: all eight particle kinds are received and parsed, with 0 errors (it was 7 Leftover data errors before).

3. Beehive occupants (azalea-inventory)

1. Change BeehiveOccupant::entity_data from NbtCompound to EntityData (entity kind + compound, same as vanilla's TypedEntityData).
2. Drop the skip_serializing_if = "is_default", since EntityData has no default and vanilla always writes it.

Test: a Bees roundtrip that checks the bee's entity type id goes on the wire.

Live: the beehive[bees=...] item no longer errors.

4. Styled number format (azalea-chat)

1. Read NumberFormat::Styled with Nbt::azalea_read (unnamed), matching the existing write.

Test: a styled roundtrip. Without the fix it fails with UnexpectedEof.

Live: all six set_objective packets from the scoreboard commands parse.

Breaking changes

• The eight Particle variants above now carry data, so matches need Particle::Flash(_), and so on.
• BeehiveOccupant::entity_data is now EntityData.
• PalletedContainerKind has a new required method.