v0.14.0 — column identity is the canonical expression, not a mechanical default

WP-NAME-1 (ratified 2026-07-30). Retires the §4 pin-eliding mechanical default. An unaliased series is now keyed by its canonical expression, verbatim — no invented name, no mangle.

• avg(revenue @ {day}) → keyed as avg(revenue @ {day}) (the input anchor is now visible in the key)
• revenue → revenue; revenue.sum → revenue.sum (not revenue_sum — the dot-to-underscore mangle retired with the default)
• One rule: identity = canonical expression, or an AS alias. Composite/nested/map/bracket expressions still take an AS.

WIRE CONTRACT BUMP: contract_version "1" → "2". No values, moods, disclosures, or reason codes change — only the default column key for the same utterance.

Migration — for consumers keying on column names

Unaliased column keys changed from mechanical defaults to canonical expressions (avg_revenue → avg(revenue), revenue_sum → revenue.sum). Key on AS aliases — an alias is author-owned and will never change under any future rule.

Triad: columna 0.14.0 · columna-core 0.14.0 · columna-server 0.8.2 (unchanged — the wire-schema text lives in core; the server re-exports it).