Started a lift log

Lifts joined the Body wing alongside the Mat. The discipline is the same: a page exists because the session was real. No "planned this week" entries, no programmed-but-skipped placeholders, no future-tense anything. Each session is its own MDX file under content/docs/body/lifts/ named by date — the body walks through every lift in order with set-rep-weight and a few sentences on phenomenology (what felt easy, what cheated, what left gains on the table).

Underneath, this also shipped the first Tier 1b event stream — content/data/lifts/2026.jsonl — backed by three foundational pieces every future JSONL category will use: a Zod schema (src/lib/schemas/lift.ts) for the session_logged and lift_logged events, a canonical-path registry (src/lib/data-registry.ts) so MDX never hardcodes data paths, and a ULID-stamping event writer (src/lib/write-event.ts) that validates on every append. Two sessions are live so far. The narrative MDX is the human-readable record; the JSONL is the queryable shadow that lets analysis scripts and MCP tools answer questions like what did I bench last month without parsing prose.