feat(01-02): implement IMAP connection service with authentication and folder listing

- Created IMAPService class with async connect/list_folders/close methods
- Uses aioimaplib for async IMAP4_SSL operations
- Implements proper connection cleanup with logout() not close()
- Added aioimaplib and html2text dependencies to pyproject.toml
- Follows async patterns from existing service classes (ynab_service.py, mealie_service.py)
- Includes comprehensive logging with [IMAP] and [IMAP ERROR] prefixes

.planning/STATE.md

@@ -10,28 +10,28 @@ See: .planning/PROJECT.md (updated 2026-02-04)
 ## Current Position
 
 Phase: 1 of 4 (Foundation)
-Plan: Ready to plan
-Status: Ready to plan
-Last activity: 2026-02-07 — Roadmap created
+Plan: 1 of 2 (Database Models & Encryption)
+Status: In progress
+Last activity: 2026-02-08 — Completed 01-01-PLAN.md
 
-Progress: [░░░░░░░░░░] 0%
+Progress: [█░░░░░░░░░] 12.5%
 
 ## Performance Metrics
 
 **Velocity:**
-- Total plans completed: 0
-- Average duration: N/A
-- Total execution time: 0 hours
+- Total plans completed: 1
+- Average duration: 11.6 minutes
+- Total execution time: 0.2 hours
 
 **By Phase:**
 
 | Phase | Plans | Total | Avg/Plan |
 |-------|-------|-------|----------|
-| - | - | - | - |
+| 1. Foundation | 1/2 | 11.6 min | 11.6 min |
 
 **Recent Trend:**
-- Last 5 plans: N/A
-- Trend: N/A
+- Last 5 plans: 01-01 (11.6 min)
+- Trend: Establishing baseline
 
 *Updated after each plan completion*
 
@@ -49,16 +49,28 @@ Recent decisions affecting current work:
 - No attachment indexing: Complexity vs value, focus on text content first
 - ChromaDB for emails: Reuse existing vector store, no new infrastructure
 
+**Phase 1 Decisions:**
+
+| Decision | Phase-Plan | Date | Impact |
+|----------|------------|------|--------|
+| FERNET_KEY as environment variable | 01-01 | 2026-02-08 | Simple key management, fails fast if missing |
+| Manual migration creation | 01-01 | 2026-02-08 | Docker port conflict, migration matches Aerich format |
+| 30-day expiration in model save() | 01-01 | 2026-02-08 | Business logic in domain model, consistent enforcement |
+
 ### Pending Todos
 
 None yet.
 
 ### Blockers/Concerns
 
-None yet.
+**Pending (Phase 1):**
+- Migration application deferred to Phase 2 (Docker environment port conflict)
+- Database tables not yet created (aerich upgrade not run)
+- Encryption validation pending (no FERNET_KEY set in environment)
 
 ## Session Continuity
 
-Last session: 2026-02-07
-Stopped at: Roadmap creation complete
+Last session: 2026-02-08 14:15 UTC
+Stopped at: Completed 01-01-PLAN.md (Database Models & Encryption)
 Resume file: None
+Next plan: 01-02-PLAN.md (IMAP connection service and email body parser)