Checkpoint the party/runtime stack before share-program and malicious-mode work.

Ship the TLS mesh, composer, Beaver/Yao/leaf MPC, prep/online paths, apps, and docs so the tree is pushable before elevating share_expr, security_mode, and prep resume.

Co-authored-by: Cursor <cursoragent@cursor.com>

include/dpf/keyword.hpp

@@ -389,6 +389,10 @@ class basic_fixed_length_string : public dpf::modint<static_cast<std::size_t>(st
 ///        uses `char` (i.e., bytes) as its **character type**, with its
 ///        default `char_traits` and `allocator` types (see
 ///        `dpf::basic_fixed_length_string` for more info on the template).
+/// @note A fixed-alphabet domain. The successor is `dpf::keyword2`, which
+///       stores a rank in a pattern language and is also not a leaf.
+/// @see dpf::keyword2
+/// @see dpf::alphabets
 template <std::size_t MaxLen,
           const char * Alphabet = alphabets::lowercase_alpha>
 using keyword = basic_fixed_length_string<MaxLen, char, Alphabet>;