Phase 9: Iris and Complementary Reimagined, off by default

Adrian, 2026-11-09: set up the shader but keep it disabled by default. Iris
1.8.14-beta.1 (built for the pack's Sodium 0.8.13) and Complementary Reimagined
r5.9.3, both client only and fetched from Modrinth. Default Options' extra
folder ships config/iris.properties with shaders off and Complementary
preselected, copied only when a player has none. Toggle Shaders is on M, the
only free letter; Iris's other keys are unbound. tools/build.py fails if the
settings name a shader file the pack doesn't install.

Smoke test passes; client dependencies are satisfied. Not launched on a client.

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

pack/shaderpacks/complementary-reimagined.pw.toml

@@ -0,0 +1,13 @@
+name = "Complementary Shaders - Reimagined"
+filename = "ComplementaryReimagined_r5.9.3.zip"
+side = "client"
+
+[download]
+url = "https://cdn.modrinth.com/data/HVnmMxH1/versions/Bqen1mJX/ComplementaryReimagined_r5.9.3.zip"
+hash-format = "sha512"
+hash = "45304b1d7862afdb2177b7e6226fc9c6737911d17a4ad46cc9c519ca4deb935f05072cd337cd8b19a15bb8062b57b54eceec7bdee4cd572d94858e2946d37d85"
+
+[update]
+[update.modrinth]
+mod-id = "HVnmMxH1"
+version = "Bqen1mJX"