baselineExistingInstall marks 0000_initial as applied when it detects
pre-existing tables, on the assumption the install's schema matches the
0000 baseline. That assumption is false for dev DBs created under the
pre-drizzle manual migrate.ts system that skipped or never ran some of
its idempotent ALTER TABLE steps — for example the b9e4c65 migration
that added federation_peers.remote_max_upload_size. On such DBs, 0000
is marked done without the column actually existing, and a later
migration that recreates the table (0004_cooing_black_knight)
subsequently crashes with "no such column: remote_max_upload_size"
while building its __new_federation_peers SELECT.
Adds healInitialSchemaDrift(): walks every table in 0000_snapshot.json,
and for each table that already exists, ADDs any columns the snapshot
declares but the physical table is missing. Runs immediately after
baselining, before drizzle's migrate() — so later migrations find the
schema they expect. Columns that SQLite's ALTER TABLE ADD COLUMN can't
safely express (PRIMARY KEY; NOT NULL without a default) are skipped
with a warning rather than corrupting data.
Idempotent: on fresh installs and correctly-migrated DBs every column
is already present, so the loop is a no-op. Production Pi+VM instances
are unaffected.
Verification: local dev DB that previously crashed on 0004 now boots
cleanly — federation_peers gained remote_max_upload_size, nonce_supported,
pending_hmac_secret, secret_rotation_at, secret_rotated_at, and
auto_rotate_interval_days; __drizzle_migrations advanced from 4 to 5
entries; server binds :3005. 110/110 server tests + 131/131 web tests
still pass.
Not covered: a deeper drift on federation_outbox /
federation_mutation_log where the physical tables retain pre-rename
column names (message_id / dm_channel_id) instead of the current
entity_id / context_id. Heal skips those (NOT NULL without default)
and the outbox worker emits SQLITE_ERROR ticks post-boot. Both tables
are empty on affected dev DBs, but a clean fix requires DROP +
RECREATE with index reinstatement which is out of #29's stated scope
("column existing"). Flagged for a follow-up.
Closes backlog #29.
Jannis Braun
e703e29f8a