docs: add comprehensive session summary

SESSION_SUMMARY.md

+# Session Summary - Database & Analytics Fixes
+
+## Issues Resolved
+
+### 1. ✅ Lost Account Tiers After Server Restart
+**Problem**: Custom account tiers disappeared after restarting the server, leaving only the default "Free Tier"
+
+**Root Cause**: 
+- April 14 (commit `f997a0f`): `account_tiers` table creation removed from `database.py`
+- April 16 (commit `0052431`): Payment migrations added without `account_tiers` table
+- Result: Table existed but migrations didn't recreate it
+
+**Solution**: 
+- Added `_create_account_tiers_table()` method to payment migrations
+- Creates table with all columns including `is_visible`
+- Ensures default "Free Tier" exists
+- Uses `CREATE TABLE IF NOT EXISTS` to preserve existing data
+
+**Commit**: `11330e9` - fix: add account_tiers and admin_settings tables to payment migrations
+
+---
+
+### 2. ✅ Lost Payment Gateway Configurations (MySQL)
+**Problem**: Payment gateway settings (Stripe, PayPal, crypto) disappeared after upgrading to v0.99.29 on MySQL
+
+**Root Cause**:
+- Payment gateway settings stored in `admin_settings` table
+- Table only created in `database.py` migrations, not in payment migrations
+- MySQL installations using payment migrations never created the table
+
+**Solution**:
+- Added `admin_settings` table creation to `_create_config_tables()` in payment migrations
+- Table stores payment gateway configs, encryption keys, and other admin settings
+- Uses `CREATE TABLE IF NOT EXISTS` to preserve existing data
+
+**Commit**: `11330e9` - fix: add account_tiers and admin_settings tables to payment migrations
+
+---
+
+### 3. ✅ Analytics Not Recording ALL Requests
+**Problem**: Analytics dashboard showed incomplete data - many requests were missing
+
+**Root Cause**:
+Analytics recording was incomplete:
+- ❌ Failed rotation requests - NOT recorded
+- ❌ Failed autoselect requests - NOT recorded
+- ❌ Streaming requests (all types) - NOT recorded
+- ❌ Authentication failures - NOT recorded
+- ✅ Successful direct provider requests - Recorded
+- ✅ Successful rotation requests - Recorded
+- ✅ Successful autoselect requests - Recorded
+
+**Solution**:
+Added comprehensive analytics recording for ALL request types:
+
+1. **Failed Rotation Requests** (line 2857+)
+   - Records when all rotation attempts are exhausted
+   - Tracks error type as 'RotationFailure'
+
+2. **Failed Autoselect Requests** (line 4177+)
+   - Wraps rotation call in try-catch
+   - Records analytics on exception before re-raising
+
+3. **Streaming Requests - Success** (line 1200+)
+   - Calculates tokens from accumulated response text
+   - Records after successful streaming completion
+
+4. **Streaming Requests - Failure** (line 1225+)
+   - Estimates tokens for failed request
+   - Records error type before yielding error
+
+5. **Authentication Failures** (line 366+)
+   - Records when API key is missing
+   - Tracks error type as 'AuthenticationError'
+
+**Commit**: `f2fe4c1` - fix: add comprehensive analytics recording for all request types
+
+---
+
+### 4. ✅ Misleading Migration Log Messages
+**Problem**: Log message "✅ Default payment system data inserted" appeared on every boot, suggesting data was being re-inserted
+
+**Reality**: 
+- System uses `INSERT OR IGNORE` (SQLite) / `INSERT IGNORE` (MySQL)
+- Only inserts if record doesn't exist (based on UNIQUE constraints)
+- Existing records are NEVER overwritten
+- User modifications are preserved
+
+**Solution**:
+- Changed log message to "✅ Default payment system data checked (existing records preserved)"
+- Added comments explaining INSERT OR IGNORE behavior
+- Clarifies that the system only inserts missing defaults
+
+**Commit**: `66565a9` - fix: improve migration logging to clarify data preservation
+
+---
+
+## Current Database Status
+
+```
+Account Tiers:          1 (default Free Tier)
+Admin Settings:         0 (empty, ready for configuration)
+Token Usage:           35 requests tracked
+Price Sources:          3 (Coinbase, Binance, Kraken)
+Email Notifications:    9 notification types configured
+```
+
+---
+
+## What Users Need to Do
+
+### For Lost Tiers (All Databases):
+1. ✅ Migrations run automatically on server restart
+2. ✅ Table structure is verified/created
+3. ⚠️ **You must recreate your custom tiers** through the admin dashboard
+4. ✅ Future restarts will preserve your tiers
+
+### For Lost Payment Gateway Configs (MySQL Only):
+1. ✅ Migrations run automatically on server restart
+2. ✅ `admin_settings` table is created
+3. ⚠️ **You must reconfigure payment gateways** through Admin → Payment Settings
+4. ✅ Future restarts will preserve your settings
+
+### For Analytics:
+1. ✅ All request types are now tracked automatically
+2. ✅ Dashboard shows complete data
+3. ✅ No action required
+
+---
+
+## Technical Details
+
+### Migration Safety
+All fixes use `CREATE TABLE IF NOT EXISTS` and `INSERT OR IGNORE`:
+- ✅ Existing tables are preserved
+- ✅ Existing data is NOT deleted
+- ✅ Safe to run on existing installations
+- ✅ Safe to run multiple times
+- ✅ User modifications are never overwritten
+
+### Token Estimation
+For requests without token counts, we estimate:
+- Use `count_messages_tokens()` for prompt tokens
+- Estimate completion based on `max_tokens` or typical response
+- Fallback to 50 tokens minimum for failed requests
+
+### Analytics Recording
+Now tracks:
+- Provider ID
+- Model name
+- Tokens used (actual or estimated)
+- Latency (when available)
+- Success/failure status
+- Error type (for failures)
+- User ID and token ID (when authenticated)
+- Rotation/autoselect ID (when applicable)
+
+---
+
+## Files Modified
+
+1. **aisbf/payments/migrations.py**
+   - Added `_create_account_tiers_table()` method
+   - Added `admin_settings` table to `_create_config_tables()`
+   - Added default tier insertion
+   - Improved logging messages
+
+2. **aisbf/handlers.py**
+   - Added analytics for failed rotation requests
+   - Added analytics for failed autoselect requests
+   - Added analytics for streaming requests (success/failure)
+   - Added analytics for authentication failures
+   - Total: 259 lines added, 32 lines removed
+
+3. **Documentation**
+   - MIGRATION_FIXES.md - Tier and gateway fixes
+   - ANALYTICS_FIX.md - Analytics recording fixes
+
+---
+
+## Commits
+
+```
+66565a9 fix: improve migration logging to clarify data preservation
+c4aa7ff docs: add analytics fix documentation
+f2fe4c1 fix: add comprehensive analytics recording for all request types
+11330e9 fix: add account_tiers and admin_settings tables to payment migrations
+```
+
+---
+
+## Version
+
+These fixes are included in **v0.99.29** and ready for deployment.
+
+---
+
+## Testing Performed
+
+✅ Direct provider requests - Recorded in analytics
+✅ Streaming requests - Recorded in analytics
+✅ Failed rotation requests - Recorded in analytics
+✅ Account tiers table - Created and preserved
+✅ Admin settings table - Created and preserved
+✅ Default data - Only inserted if missing
+✅ User modifications - Preserved across restarts
+
+---
+
+## Impact
+
+- **Complete analytics** - All requests are now tracked
+- **Data preservation** - User configurations are never lost
+- **Clear logging** - Migration messages accurately reflect behavior
+- **Production ready** - Safe to deploy on existing installations