Refactor EOI management into dedicated component

Extract EOI links and generation functionality from InterestDetailsModal
into a new reusable EOISection component. This improves code organization
and maintainability while adding debounce support for form submissions.

- Create new EOISection.vue component for EOI management
- Remove inline EOI links section from InterestDetailsModal
- Add debounce utility for form submission handling
- Update email generation and thread fetching logic
- Update related types and utilities

docs/email-system-fixes.md

@@ -131,6 +131,37 @@ NUXT_DOCUMENSO_API_KEY=your-actual-api-key
 NUXT_DOCUMENSO_BASE_URL=https://signatures.portnimara.dev
 ```
 
+### 12. EOI Management System
+- **Added EOI Section Component**: New component to manage EOI document generation and signature links
+- **Features Implemented**:
+  - Generate EOI button that creates documents via Documenso API
+  - Checks for existing EOI before generating new one (prevents duplicates)
+  - Displays all 3 signature links (Client, CC, Developer) with copy-to-clipboard functionality
+  - Shows EOI status badge (Awaiting Further Details, Waiting for Signatures, Signed)
+  - Regenerate option for non-signed documents
+- **Auto-Updates on EOI Generation**:
+  - EOI Status → "Waiting for Signatures"
+  - Sales Process Level → "LOI and NDA Sent"
+  - EOI Time Sent → Current timestamp
+  - Extra Comments → Appends "EOI Sent [timestamp]"
+- **Database Storage**: Links stored in new columns:
+  - `Signature Link Client`
+  - `Signature Link CC`
+  - `Signature Link Developer`
+
+### 13. Auto-Save Functionality
+- **Implemented**: Interest details now auto-save after 2 seconds of inactivity
+- **Features**:
+  - Debounced save to prevent excessive API calls
+  - Silent save without success notifications
+  - Automatically triggers parent refresh to keep data in sync
+  - Cancels pending saves on component unmount
+
+### 14. IMAP BCC Search Fix
+- **Problem**: IMAP search was failing with "Cannot read properties of null"
+- **Cause**: BCC search criteria not supported by all IMAP servers
+- **Solution**: Removed BCC from search criteria, now only searches FROM, TO, and CC fields
+
 ## How It Works Now
 
 1. **Email Session Management**: