feat: seed the http database on up

[jravani]

A bare docker compose up -d in environment/http now leaves ignis ready to serve. An empty database is seeded, a populated one is left unchanged, and a failed seed makes up fail.

build_db

Errors now stop the run. build_db discarded the error from every Exec, and a rejected insert was only logged, so it exited 0 when seeding had failed. Schema creation, drop, create, insert and the dropdown update each return an error naming the table (and the workbook row, for an insert), and build_db exits non-zero.

One transaction. The whole seed runs in a single transaction. A failure commits nothing, so the previous tables stay and no partly populated schema is ever left behind. That makes "the tabula schema holds tables" a reliable test for "a seed completed", exposed as importer.IsSeeded.

-if-empty. With the flag, build_db exits 0 without changes when the schema already holds tables. Without it, behaviour is unchanged, so make create-db still rebuilds.

environment/http

Both compose files run build-db with -if-empty on every up, and ignis depends on it with service_completed_successfully. The seed profile is removed from http, so pull fetches build-db without it.

Situation	Result of up -d
empty volume	seeded, then ignis starts
populated volume	seed skipped, ignis starts
seed fails	exit 1, service "build-db" didn't complete successfully, ignis not started

A populated database is rebuilt with docker compose run --rm build-db -if-empty=false. environment/https keeps the seed profile and its manual step. docker-compose.prod.yml needs build-db images from v0.7.0 or later; older ones reject the flag and up fails.

docs/getting-started.md and the seeder dockerfile comment describe the http and https behaviour separately.

Checks

• New integration test TestTableConstructor_Run_failedInsert_returnsErrorAndLeavesNoTables failed on main (Run() returned nil for a row Postgres rejects) and passes here. TestIsSeeded_reportsWhetherSchemaHasTables covers the check before and after a seed.
• go test ./..., go test -tags integration ./internal/db/, go vet ./... and mkdocs build --strict pass.
• environment/http/docker-compose.yml run end to end under a separate project name: an empty volume seeded in 7.4 s with 2147 rows and /calculate answered; a second up skipped the seed; run --rm build-db -if-empty=false rebuilt; with a wrong DB_PASSWORD on build-db, up exited 1 and ignis stayed in Created.

[codecov-commenter]

Codecov Report

❌ Patch coverage is 48.07692% with 27 lines in your changes missing coverage. Please review.

Files with missing lines	Patch %	Lines
internal/db/table_constructor.go	58.13%	9 Missing and 9 partials ⚠️
cmd/build_db/main.go	0.00%	9 Missing ⚠️

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