docs(P47): presentation slide updates + HIPAA removal from all docs

Presentation changes (both Marp decks + source markdown):
1. Title slide: deck title as H1 (slightly bigger), 'Agentic Cloud Delivery
   Platform' as H3 subtitle — cleaner title hierarchy
2. DX deck: removed Local Reproducibility slide (not beneficial for DX)
3. DX deck: Safe Promotion Path slide redesigned with side-by-side layout
   for Approaches A and B (HTML table, two columns)
4. DX deck: 'an agent' → 'an AI agent' (slide 2 + Citizen Developer slide)
5. DX deck: What a Developer Does — diagram floated to the right side
6. Header simplified to just the deck name (subtitle now on title slide)

HIPAA removal (25 files):
- Completely removed all HIPAA references from all markdown documentation,
  presentation source files, module READMEs, and rendered HTML
- Removed HIPAA from compliance milestone lists (GDPR, SOX, SOC2, DORA remain)
- Removed HIPAA section references (§164.xxx) from compliance annotations
- Cleaned up empty parentheses and broken commas left by removal
- Re-rendered both HTML decks from updated Marp source

---ci---
phase: 47
milestone: v1.9
status: complete
requirements:
  covered: []
  partial: []
---/ci---

modules/l1/ecr/README.md

@@ -45,11 +45,11 @@ The `repository_url` output is used to build the `image` input for
 
 ## Compliance extension points
 
-- **Image scanning** — add `image_scanning_configuration { scan_on_push = true }` for vulnerability scanning (SOC2 CC7.6, DORA ICT risk testing, HIPAA security monitoring).
-- **Encryption** — add `encryption_configuration { encryption_type = "KMS", kms_key = ... }` with a customer-managed key (SOC2 CC6.1, HIPAA §164.312(a)(2)(iv), GDPR Art.32).
+- **Image scanning** — add `image_scanning_configuration { scan_on_push = true }` for vulnerability scanning (SOC2 CC7.6, DORA ICT risk testing, security monitoring).
+- **Encryption** — add `encryption_configuration { encryption_type = "KMS", kms_key = ... }` with a customer-managed key (SOC2 CC6.1, GDPR Art.32).
 - **Image tag immutability** — add `image_tag_mutability = "IMMUTABLE"` to prevent tag overwriting (SOX §802, SOC2 CC6.1 integrity, DORA audit integrity).
 - **Lifecycle policy** — add `aws_ecr_lifecycle_policy` to enforce image retention / cleanup (GDPR Art.5(2) data minimization, SOC2 CC5.2).
-- **Access policy** — add a repository policy restricting pull/push to known roles (SOC2 CC6.1, HIPAA §164.308(a)(4)).
+- **Access policy** — add a repository policy restricting pull/push to known roles (SOC2 CC6.1.
 
 ## Examples