Intrastate operating authority is state-specific + application-based like IRP, so
it reuses the same email/POA + invoice-reconciliation flow:
- intrastate_filing.send_intrastate_submission: emails the state PSC/PUC the
authority application with the signed POA attached (subject tag [PW-ISA CO-..]),
reusing irp_filing's MinIO download + census enrich helpers.
- The shared poller (irp_invoice_poller) now matches BOTH [PW-IRP] and [PW-ISA]
tags, parses the fee, Telegram-alerts, and bills the customer the exact amount
with the correct service slug.
- state_trucking gov-fee gate routes intrastate-authority to the PSC/PUC email
path; if no submission email is configured for the base state it falls back
to a manual todo (safe default — no emailing guessed agency addresses).
Per-state ISA_<ST>_EMAIL env (blank until the exact agency address is verified).
SC/GA/TX scaffolded. Customer still only sees an exact-fee payment link; you only
approve the final filing.
