SESDB v0.2.0-alpha.0

First SESDB alpha: durable L1-backed daemon, disposable FTS5 projection, opt-in Claude/Codex providers, bounded CJK search, authenticated localhost API, SDK/CLI, and real local Console.\n\nI0 remains in progress. This alpha does not claim five-provider support or full Obelisk parity. The acceptance baseline remains pinned to tommy0103/obelisk@f256668.