docs(02-05): complete multimodal media support plan summary

- Add 02-05-SUMMARY.md with full task documentation and deviations
- Update STATE.md: advance to plan 5 of 5 in phase 02, add decisions
- Update ROADMAP.md: phase 2 now 5/5 plans complete (Complete status)

.planning/STATE.md

@@ -3,8 +3,8 @@ gsd_state_version: 1.0
 milestone: v1.0
 milestone_name: milestone
 status: planning
-stopped_at: Completed 02-agent-features/02-02-PLAN.md
-last_updated: "2026-03-23T21:02:15.263Z"
+stopped_at: Completed 02-agent-features/02-05-PLAN.md
+last_updated: "2026-03-23T21:35:00.000Z"
 last_activity: 2026-03-23 — Roadmap created, ready for Phase 1 planning
 progress:
   total_phases: 3
@@ -25,12 +25,12 @@ See: .planning/PROJECT.md (updated 2026-03-22)
 
 ## Current Position
 
-Phase: 1 of 3 (Foundation)
-Plan: 0 of 3 in current phase
-Status: Ready to plan
-Last activity: 2026-03-23 — Roadmap created, ready for Phase 1 planning
+Phase: 2 of 3 (Agent Features)
+Plan: 5 of 5 in current phase
+Status: In progress
+Last activity: 2026-03-23 — Completed 02-05 multimodal media support and WhatsApp outbound routing
 
-Progress: [░░░░░░░░░░] 0%
+Progress: [████████░░] 78%
 
 ## Performance Metrics
 
@@ -58,6 +58,7 @@ Progress: [░░░░░░░░░░] 0%
 | Phase 02-agent-features P02-01 | 9m 22s | 2 tasks | 15 files |
 | Phase 02-agent-features P04 | 5m | 2 tasks | 7 files |
 | Phase 02-agent-features P02 | 12m 22s | 3 tasks | 19 files |
+| Phase 02-agent-features P05 | ~25m | 2 tasks | 6 files |
 
 ## Accumulated Context
 
@@ -95,6 +96,10 @@ Recent decisions affecting current work:
 - [Phase 02-agent-features]: CAST(:metadata AS jsonb) for asyncpg JSONB params — :: cast syntax fails with named params
 - [Phase 02-agent-features]: Migration 004 (not 003) for audit_events — 003_escalation_fields.py claimed revision 003 first
 - [Phase 02-agent-features]: AuditLogger uses raw INSERT text() — ORM model would allow accidental SQLAlchemy UPDATE/DELETE on audit rows
+- [Phase 02-agent-features]: boto3 added to gateway pyproject.toml explicitly — was used via local import in whatsapp.py but never declared, causing ModuleNotFoundError in tests
+- [Phase 02-agent-features]: boto3 patched at import site patch('boto3.client') not patch('module.boto3') — local imports inside async functions require patching the actual module, not the module attribute
+- [Phase 02-agent-features]: build_messages_with_media() wraps build_messages_with_memory() — media enrichment is additive, all memory context preserved alongside image_url blocks
+- [Phase 02-agent-features]: AUDIO/VIDEO attachments text-referenced only in v1 — OpenAI image_url blocks support images only, not audio/video
 
 ### Pending Todos
 
@@ -106,6 +111,6 @@ None yet.
 
 ## Session Continuity
 
-Last session: 2026-03-23T21:02:15.260Z
-Stopped at: Completed 02-agent-features/02-02-PLAN.md
+Last session: 2026-03-23T21:35:00.000Z
+Stopped at: Completed 02-agent-features/02-05-PLAN.md
 Resume file: None