Phase 5: breeding with Cobbreeding, Ditto a rare Deep Dark find

Adrian (2026-10-31): add Cobbreeding without a gate; only Ditto should
be rare, in an endgame area or gated behind something else.

- Cobbreeding 2.4.1 (Modrinth only) and Cloth Config (client) in the
  pack; Cobblebase's hatchery takes Cobbreeding's eggs.
- Ditto moved from Button Isle to the Deep Dark with both of Cobblemon's
  entries (rare in slime chunks, ultra-rare elsewhere): zone_spawns.py
  pins take {"zone", "all_entries"}; Deep Dark target +1, Button Isle -1
  so no other line moved; Southwold and Frostpeak guardians pinned (they
  tie on base stats and flipped between runs).
- HMs' Trainer Ditto is made uncatchable; it still trades.
- check_deps.py skips other-side dependencies; Cobbreeding's harmless
  client-mixin log line allowlisted.
- Self-tests cobbreeding_eggs_fit_the_hatchery, trainer_ditto_cant_be_caught;
  docs, balance table, Phase 5 checklist.

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

pack/index.toml

@@ -111,6 +111,11 @@ file = "mods/balm.pw.toml"
 hash = "603cdc47142b5aa5729cbbf265a473574c9e2b55561de4318e9842d3d4b3b995"
 metafile = true
 
+[[files]]
+file = "mods/cloth-config.pw.toml"
+hash = "66b2e57fad1d958893206d82ff878159b7fdfef64ccb74fe1232b71012409953"
+metafile = true
+
 [[files]]
 file = "mods/cobblebase.pw.toml"
 hash = "586a0c3388e78fea91123f6c88907cc2cc2c5f2b87a15d7c050787d2c8c78cee"
@@ -146,6 +151,11 @@ file = "mods/cobblemon_tp_pastures.pw.toml"
 hash = "2cb849c31c6c51e394b254850243112c6a1a93a3b3534de1ebb9add05a90dd2d"
 metafile = true
 
+[[files]]
+file = "mods/cobbreeding.pw.toml"
+hash = "aa8f86c0deec2e5ff6a20360be15748c5281faaa0acf45f15044eff42f182ad9"
+metafile = true
+
 [[files]]
 file = "mods/cold-sweat.pw.toml"
 hash = "96b2b071c1669e5f71237adc77d9474d0dc5544509cebc0b242478e40915a4d4"