fix(engine/rocky-compiler): import-dbt correctness — SELECT* microbatch, wrong profile, seed-backed project

[hugocorreia90]

rocky import-dbt had three correctness defects when converting a dbt project into a runnable Rocky repo. This fixes all three.

Bugs fixed

1. Microbatch SELECT * failed rocky compile with E020

A microbatch model imported with --microbatch-as=time_interval whose compiled body is SELECT * FROM <up> got wrapped as SELECT * FROM (SELECT * FROM up) AS _rocky_microbatch and failed compilation with E020 — the outer star resolved to an empty output schema because SELECT * expansion didn't recurse through a derived table whose own body is itself a SELECT *. The inner subquery's source-table names are now carried on the lineage TableReference (derived_sources) and resolved transitively against the model/source graph in the semantic-graph builder, so the event_time column is present in the output schema. This only fires when the inner columns can't be enumerated, so the explicit-projection case is untouched and E020 still fires when the upstream genuinely omits the time column.

2. Wrong profile / adapter selected

The importer ignored dbt_project.yml's profile: key and picked the alphabetically-first profile in profiles.yml, emitting the wrong adapter type and catalog/schema. It now reads the named profile and selects it; a named profile that is absent from profiles.yml is a loud fallback, never a silent alphabetical pick.

3. Seed-backed project failed rocky seed / bare-name rocky run

An emitted seed-backed project failed rocky seed ("Catalog main does not exist") and bare-name rocky run, because the importer wrote no seed sidecar and rocky seed defaults a transformation pipeline to main.seeds. The importer now writes a per-seed <stem>.toml sidecar pinning the seed target to the project's default catalog/schema, so seeds land where bare-name model refs resolve. Existing sidecars are left untouched so hand-tuned overrides survive a re-import.

How verified

• cargo test -p rocky-compiler (370 tests, green) — transitive inner-star resolution plus E020 regression guards (must-not-fire when upstream projects the column / must-still-fire when it omits it); named-profile selection (named wins over alphabetical / named-but-absent surfaces a loud fallback / no profile: key uses the sole profile); seed sidecar written + does-not-clobber-existing.
• cargo test -p rocky-sql lineage (green) — derived_sources recorded for an inner-star derived table.
• cargo test -p rocky-cli --test import_dbt_emit (green) — end-to-end emit from the rich dbt fixture, honoring the profile: key.