Give independent consumers their own rules, cascade layer ordering, and source-order counters so packages such as Ebox cannot pollute TP's default stylesheet or each other. Match generic class and state tokens by value and document caller-owned stylesheet lifecycle.
Verified: make clean; make test (728/728); make compile WERROR=t; checkdoc tp-style.el; git diff --check; Ebox make test against ../tp.
Introduce the pure TP 1.0 property schema, selector, cascade, custom-property, computed-value, provenance, and Emacs projection kernel. Compile static legacy layer definitions into canonical named styles without freezing parameterized or reactive definitions.\n\nVerified with 667 ERT tests, 92 doctests, shuffled seed 20260806, and compile-all with warnings as errors.
