DOT D&A binder: editable DOCX output, all 6 forms each full-page, service-aware delivery email

- Rewrite dot_da_binder_generator.py to emit an editable .docx (was reportlab PDF)
  so carriers/counsel can review and adapt the program. ~4000 words, 10 sections.
- Render all six required forms (A-F); previously only A, D, E existed. Each form
  starts on its own page (page break) and fills a page.
- Mode-aware policy text for FMCSA/FRA/PHMSA/FTA/FAA/USCG with correct CFR parts
  and random-testing rates; optional single-state Drug-Free Workplace addendum
  (federal DOT program is nationwide; only the optional DFWP addendum is state-keyed).
- Handler now outputs .docx instead of .pdf.
- job_server instant-delivery: attach DOCX (correct MIME) as well as PDF, and use
  DOT-specific email copy + CTA instead of the FCC/telecom boilerplate.

scripts/workers/services/dot_drug_alcohol.py

@@ -2,20 +2,24 @@
 DOT Drug & Alcohol Compliance Program handler ($149).
 
 Instant-delivery service: when a motor carrier orders the program we
-generate a complete, print-ready PDF "binder" and email it to them
-automatically (no admin step). The binder bundles the written testing
-policy, program-management instructions, supervisor-training materials and
-access, EAP / rehab / SAP resources, regulation citations, random-testing
-instructions, required forms, and recordkeeping guidance.
+generate a complete, editable Word (.docx) "binder" and email it to them
+automatically (no admin step). DOCX is used so the carrier and its counsel
+can review and adapt the program before adopting it. The binder bundles the
+written testing policy, program-management instructions, supervisor-training
+materials and access, EAP / rehab / SAP resources, regulation citations,
+random-testing instructions, all required forms (A-F, each on its own page),
+and recordkeeping guidance.
 
 Policy variant (DOT operating administration) selection:
   For a trucking carrier the program is FMCSA (49 CFR Part 382) — that is
   the default. If the customer's operation falls under a different DOT mode
   (FRA, PHMSA, FTA, FAA, USCG) we honor an explicit ``dot_da_mode`` value in
   the intake data. An optional ``state_dfwp`` value appends a state
-  Drug-Free Workplace addendum.
+  Drug-Free Workplace addendum (keyed to the carrier's home/principal state,
+  not per-employee — the federal DOT program itself is nationwide and not
+  state-specific).
 
-Returns the local PDF path so job_server uploads it to MinIO and the
+Returns the local DOCX path so job_server uploads it to MinIO and the
 INSTANT_DELIVERY path emails it to the customer.
 """
 from __future__ import annotations
@@ -92,7 +96,7 @@ class DrugAlcoholProgramHandler(BaseServiceHandler):
             c for c in carrier_name if c.isalnum() or c in (" ", "-", "_")
         ).strip().replace(" ", "_")[:40] or "carrier"
         out_path = os.path.join(
-            work_dir, f"DOT_DA_Compliance_Binder_{safe_name}_{date_str}.pdf"
+            work_dir, f"DOT_DA_Compliance_Binder_{safe_name}_{date_str}.docx"
         )
 
         from scripts.document_gen.templates.dot_da_binder_generator import (