Batch of 5+1 facades converted from star re-exports to explicit symbol lists.
defs/mod.nu:
about.nu [about_info]
lists.nu [6 symbols]
integrations/mod.nu:
ecosystem * (already selective — its re-exports are bounded)
iac * (fixed in same commit)
integrations/iac/mod.nu (bonus fix):
Former `use iac_orchestrator *` was TWO bugs: (1) missing `./` prefix made
the import path ambiguous, (2) plain `use` vs `export use` meant the facade
never actually re-exported anything. Converted to
`export use ./iac_orchestrator.nu [5 symbols]`.
Side-effect: nu --ide-check errors went 2 -> 4 because iac_orchestrator.nu
now actually loads and its pre-existing bugs become visible. Not a
regression — bugs were hidden, now surfaced.
kms/mod.nu:
lib.nu [5 symbols]
client.nu [6 symbols including multi-word "main"]
mode/mod.nu:
commands.nu [8 multi-word "mode X"]
validator.nu [2 symbols]
oci/mod.nu:
client.nu [12 symbols]
commands.nu [11 multi-word "oci X"]
Validation: errors match baseline for all 5 (defs, integrations, kms, mode,
oci). integrations/iac/mod.nu +2 errors are pre-existing bugs in
iac_orchestrator.nu revealed by correct facade behaviour.
Refs: ADR-025
