Rename Castle Accounting extension to Libra

Full identifier rename: module path lnbits.extensions.castle →
lnbits.extensions.libra, DB ext_castle → ext_libra, URL prefix
/castle/ → /libra/, manifest id castle → libra, fava ledger slug
default castle-ledger → libra-ledger, Beancount source metadata
castle-api → libra-api and link prefixes castle-{entry,tx}- →
libra-{entry,tx}-, column castle_wallet_id → libra_wallet_id, all
Python/JS/HTML identifiers (castle_ext, CastleSettings,
castle_reference, castleWalletConfigured, etc.).

Display name "Castle Accounting" → "Libra" (the scales/balance
metaphor — fits double-entry bookkeeping).

No backward compat: production hosts will be force-updated. Old
castle-prefixed Beancount metadata in existing Fava ledgers is
historical; new entries use libra-* prefixes going forward.

Co-Authored-By: Claude Opus 4.7 (1M context) <noreply@anthropic.com>

docs/DAILY_RECONCILIATION.md

@@ -1,6 +1,6 @@
 # Automated Daily Reconciliation
 
-The Castle extension includes automated daily balance checking to ensure accounting accuracy.
+The Libra extension includes automated daily balance checking to ensure accounting accuracy.
 
 ## Overview
 
@@ -16,7 +16,7 @@ You can manually trigger the reconciliation check from the UI or via API:
 
 ### Via API
 ```bash
-curl -X POST https://your-lnbits-instance.com/castle/api/v1/tasks/daily-reconciliation \
+curl -X POST https://your-lnbits-instance.com/libra/api/v1/tasks/daily-reconciliation \
   -H "X-Api-Key: YOUR_ADMIN_KEY"
 ```
 
@@ -28,7 +28,7 @@ Add to your crontab:
 
 ```bash
 # Run daily at 2 AM
-0 2 * * * curl -X POST http://localhost:5000/castle/api/v1/tasks/daily-reconciliation -H "X-Api-Key: YOUR_ADMIN_KEY" >> /var/log/castle-reconciliation.log 2>&1
+0 2 * * * curl -X POST http://localhost:5000/libra/api/v1/tasks/daily-reconciliation -H "X-Api-Key: YOUR_ADMIN_KEY" >> /var/log/libra-reconciliation.log 2>&1
 ```
 
 To edit crontab:
@@ -38,22 +38,22 @@ crontab -e
 
 ### Option 2: Systemd Timer
 
-Create `/etc/systemd/system/castle-reconciliation.service`:
+Create `/etc/systemd/system/libra-reconciliation.service`:
 ```ini
 [Unit]
-Description=Castle Daily Reconciliation Check
+Description=Libra Daily Reconciliation Check
 After=network.target
 
 [Service]
 Type=oneshot
 User=lnbits
-ExecStart=/usr/bin/curl -X POST http://localhost:5000/castle/api/v1/tasks/daily-reconciliation -H "X-Api-Key: YOUR_ADMIN_KEY"
+ExecStart=/usr/bin/curl -X POST http://localhost:5000/libra/api/v1/tasks/daily-reconciliation -H "X-Api-Key: YOUR_ADMIN_KEY"
 ```
 
-Create `/etc/systemd/system/castle-reconciliation.timer`:
+Create `/etc/systemd/system/libra-reconciliation.timer`:
 ```ini
 [Unit]
-Description=Run Castle reconciliation daily
+Description=Run Libra reconciliation daily
 
 [Timer]
 OnCalendar=daily
@@ -66,8 +66,8 @@ WantedBy=timers.target
 
 Enable and start:
 ```bash
-sudo systemctl enable castle-reconciliation.timer
-sudo systemctl start castle-reconciliation.timer
+sudo systemctl enable libra-reconciliation.timer
+sudo systemctl start libra-reconciliation.timer
 ```
 
 ### Option 3: Docker/Kubernetes CronJob
@@ -78,7 +78,7 @@ For containerized deployments:
 apiVersion: batch/v1
 kind: CronJob
 metadata:
-  name: castle-reconciliation
+  name: libra-reconciliation
 spec:
   schedule: "0 2 * * *"  # Daily at 2 AM
   jobTemplate:
@@ -91,7 +91,7 @@ spec:
             args:
             - /bin/sh
             - -c
-            - curl -X POST http://lnbits:5000/castle/api/v1/tasks/daily-reconciliation -H "X-Api-Key: ${ADMIN_KEY}"
+            - curl -X POST http://lnbits:5000/libra/api/v1/tasks/daily-reconciliation -H "X-Api-Key: ${ADMIN_KEY}"
           restartPolicy: OnFailure
 ```
 
@@ -129,7 +129,7 @@ The endpoint returns:
 grep CRON /var/log/syslog
 
 # View custom log (if using cron with redirect)
-tail -f /var/log/castle-reconciliation.log
+tail -f /var/log/libra-reconciliation.log
 ```
 
 ### Success Criteria
@@ -142,7 +142,7 @@ tail -f /var/log/castle-reconciliation.log
 
 If `failed > 0`:
 1. Check the `failed_assertions` array for details
-2. Investigate discrepancies in the Castle UI
+2. Investigate discrepancies in the Libra UI
 3. Review recent transactions
 4. Check for data entry errors
 5. Verify exchange rate conversions (for fiat)
@@ -172,7 +172,7 @@ Planned features:
 
 3. **Check network connectivity**:
    ```bash
-   curl http://localhost:5000/castle/api/v1/reconciliation/summary -H "X-Api-Key: YOUR_KEY"
+   curl http://localhost:5000/libra/api/v1/reconciliation/summary -H "X-Api-Key: YOUR_KEY"
    ```
 
 ### Permission Denied
@@ -202,31 +202,31 @@ Planned features:
 
 ```bash
 #!/bin/bash
-# setup-castle-reconciliation.sh
+# setup-libra-reconciliation.sh
 
 # Configuration
 LNBITS_URL="http://localhost:5000"
 ADMIN_KEY="your_admin_key_here"
-LOG_FILE="/var/log/castle-reconciliation.log"
+LOG_FILE="/var/log/libra-reconciliation.log"
 
 # Create log file
 touch "$LOG_FILE"
 chmod 644 "$LOG_FILE"
 
 # Add cron job
-(crontab -l 2>/dev/null; echo "0 2 * * * curl -X POST $LNBITS_URL/castle/api/v1/tasks/daily-reconciliation -H 'X-Api-Key: $ADMIN_KEY' >> $LOG_FILE 2>&1") | crontab -
+(crontab -l 2>/dev/null; echo "0 2 * * * curl -X POST $LNBITS_URL/libra/api/v1/tasks/daily-reconciliation -H 'X-Api-Key: $ADMIN_KEY' >> $LOG_FILE 2>&1") | crontab -
 
 echo "Daily reconciliation scheduled for 2 AM"
 echo "Logs will be written to: $LOG_FILE"
 
 # Test the endpoint
 echo "Running test reconciliation..."
-curl -X POST "$LNBITS_URL/castle/api/v1/tasks/daily-reconciliation" \
+curl -X POST "$LNBITS_URL/libra/api/v1/tasks/daily-reconciliation" \
   -H "X-Api-Key: $ADMIN_KEY"
 ```
 
 Make executable and run:
 ```bash
-chmod +x setup-castle-reconciliation.sh
-./setup-castle-reconciliation.sh
+chmod +x setup-libra-reconciliation.sh
+./setup-libra-reconciliation.sh
 ```