feat(s011): slice 011 approved

Owner's word, 2026-09-20, after PROOF.md at G4. ROADMAP row 011 reads
approved; the merge is 02a0ee3 and the tag slice/011 points at it.

Signed-off-by: Ayla Croft <aylacroft@proton.me>

Author: HackTuah

ROADMAP.md

@@ -34,7 +34,7 @@ standards register names the rows that ask for them.
 | 002 | Supply chain, early: SBOM, build provenance, the TLS floor | 0 Foundation | S | 000 | planned |
 | 003 | FIPS build leg in CI, from source | 0 Foundation | M | 000 | planned |
 | 010 | Core domain + persistence (Ecto/SQLite, schemas, Repo owner) | 1 Core loop | M | 000 | approved |
-| 011 | LLM provider layer (req_llm behind `Trinity.LLM` behaviour) | 1 Core loop | M | 010 | done |
+| 011 | LLM provider layer (req_llm behind `Trinity.LLM` behaviour) | 1 Core loop | M | 010 | approved |
 | 012 | Session process + agent loop (gen_statem, DynamicSupervisor, rehydration) | 1 Core loop | L | 010, 011 | planned |
 | 013 | LiveView chat UI with streaming | 1 Core loop | M | 012 | planned |
 | 020 | Tool protocol + registry | 2 Tools | M | 012 | planned |