Summary

• fix(memory): spreading activation BFS fails — ESCAPE clause has 2 chars instead of 1 #2393 (P1): Spreading activation BFS alias query used ESCAPE '\\\\' (2 chars in SQL), which SQLite rejects. Changed to ESCAPE '\\' (1 char). Regression introduced in PR feat(db): introduce zeph-db crate with database abstraction layer (Phase 1, SQLite) #2371.
• feat(llm): PILOT bandit state not persisted — save_bandit_state() not called in save_router_state() #2394 (P2): save_router_state() was missing save_bandit_state(), causing PILOT LinUCB bandit to cold-start on every restart. Added the missing call.

Changes

• crates/zeph-memory/src/graph/store/mod.rs:1081 — fix ESCAPE clause
• crates/zeph-llm/src/any.rs — add save_bandit_state() to shutdown path
• CHANGELOG.md — document both fixes under [Unreleased]

Test plan

• cargo +nightly fmt --check — clean
• cargo clippy --workspace --features full -- -D warnings — 0 warnings
• cargo nextest run --workspace --features full --lib --bins — 7233 passed, 0 failed