submodule: bump my-lang to ca440a0 (Rocq proof-debt closure)

hyperpolymath · hyperpolymath · commit 569d10d62eb0 · 2026-04-17T20:29:56.000+01:00
Advances my-lang from bf34f4c to ca440a0. New-on-my-lang:

  ca440a0  proofs(coq): land has_type_ind_strong — full Typing.v now builds
  0f3210f  proofs(coq): fix buildability of Syntax.v + T_BinOp cases

These close the my-lang Typing.v weakening+subsumption+substitution
item from proof-debt-plan.md (the ~130-LOC custom induction scheme
that threads nested Forall IH through T_Array).
diff --git a/my-lang b/my-lang
@@ -1 +1 @@
-Subproject commit a464e4a918b10487c38ac65993def55b633e05a4
+Subproject commit ca440a0b12d0d76de8d38b9647d4227bf0abd798
