Anyone who ran hermes between Apr 15 (42aeb4ec) and Apr 22 (a7d78d3b)
has schema_version=7 from the pre-renumber api_call_count migration.
When a7d78d3b inserted reasoning_content as the new v7 and pushed
api_call_count to v8, the 'if current_version < 7' gate was already
false for those users, so reasoning_content was never created —
sqlite3.OperationalError: no such column: reasoning_content on any
/continue or /resume touching assistant replays.
Replaces the version-gated ADD COLUMN chain with _reconcile_columns():
on every startup, parse SCHEMA_SQL via an in-memory SQLite and diff
against PRAGMA table_info; ALTER TABLE ADD COLUMN for anything missing.
Follows the Beets / sqlite-utils pattern — SCHEMA_SQL becomes the single
source of truth for declared columns. Self-healing and idempotent.
v10 trigram FTS backfill is retained in a version-gated block — that
migration isn't a column add, it inserts existing message rows into
the new FTS virtual table, so reconciliation can't express it.
schema_version is also kept for future row-data migrations.
Salvaged from #14097 (@kshitijk4poor) onto current main; v10 trigram
preservation and the v9 codex_message_items column (stale-missed by
the original branch) are covered automatically by reconciliation.
Tests:
- Regression: DB at old v7 with api_call_count but no reasoning_content
gets the column on open
- Idempotency: reopening the same DB is a no-op
- Structural invariant: every SCHEMA_SQL column is in the live DB
- Existing v2 migration test still passes
- E2E verified against fresh / v1 / old-v7 / v9 DBs, plus v10 trigram
backfill preserved
461ef88705