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>

__init__.py

@@ -5,24 +5,24 @@ from loguru import logger
 
 from .crud import db
 from .tasks import wait_for_paid_invoices
-from .views import castle_generic_router
-from .views_api import castle_api_router
+from .views import libra_generic_router
+from .views_api import libra_api_router
 
-castle_ext: APIRouter = APIRouter(prefix="/castle", tags=["Castle"])
-castle_ext.include_router(castle_generic_router)
-castle_ext.include_router(castle_api_router)
+libra_ext: APIRouter = APIRouter(prefix="/libra", tags=["Libra"])
+libra_ext.include_router(libra_generic_router)
+libra_ext.include_router(libra_api_router)
 
-castle_static_files = [
+libra_static_files = [
     {
-        "path": "/castle/static",
-        "name": "castle_static",
+        "path": "/libra/static",
+        "name": "libra_static",
     }
 ]
 
 scheduled_tasks: list[asyncio.Task] = []
 
 
-def castle_stop():
+def libra_stop():
     """Clean up background tasks on extension shutdown"""
     for task in scheduled_tasks:
         try:
@@ -31,32 +31,32 @@ def castle_stop():
             logger.warning(ex)
 
 
-def castle_start():
-    """Initialize Castle extension background tasks"""
+def libra_start():
+    """Initialize Libra extension background tasks"""
     from lnbits.tasks import create_permanent_unique_task
     from .fava_client import init_fava_client
-    from .models import CastleSettings
+    from .models import LibraSettings
     from .tasks import wait_for_account_sync
 
     async def _init_fava():
         """Load saved settings from DB, fall back to defaults."""
-        from .crud import db as castle_db
+        from .crud import db as libra_db
 
         settings = None
         try:
-            row = await castle_db.fetchone(
+            row = await libra_db.fetchone(
                 "SELECT * FROM extension_settings LIMIT 1",
-                model=CastleSettings,
+                model=LibraSettings,
             )
             if row:
                 settings = row
-                logger.info(f"Loaded Castle settings from DB: {settings.fava_url}/{settings.fava_ledger_slug}")
+                logger.info(f"Loaded Libra settings from DB: {settings.fava_url}/{settings.fava_ledger_slug}")
         except Exception as e:
             logger.warning(f"Could not load settings from DB: {e}")
 
         if not settings:
-            settings = CastleSettings()
-            logger.info(f"Using default Castle settings: {settings.fava_url}/{settings.fava_ledger_slug}")
+            settings = LibraSettings()
+            logger.info(f"Using default Libra settings: {settings.fava_url}/{settings.fava_ledger_slug}")
 
         init_fava_client(
             fava_url=settings.fava_url,
@@ -69,16 +69,16 @@ def castle_start():
         asyncio.get_event_loop().create_task(_init_fava())
     except Exception as e:
         logger.error(f"Failed to initialize Fava client: {e}")
-        logger.warning("Castle will not function without Fava. Please configure Fava settings.")
+        logger.warning("Libra will not function without Fava. Please configure Fava settings.")
 
     # Start background tasks
-    task = create_permanent_unique_task("ext_castle", wait_for_paid_invoices)
+    task = create_permanent_unique_task("ext_libra", wait_for_paid_invoices)
     scheduled_tasks.append(task)
 
     # Start account sync task (runs hourly)
-    sync_task = create_permanent_unique_task("ext_castle_account_sync", wait_for_account_sync)
+    sync_task = create_permanent_unique_task("ext_libra_account_sync", wait_for_account_sync)
     scheduled_tasks.append(sync_task)
-    logger.info("Castle account sync task started (runs hourly)")
+    logger.info("Libra account sync task started (runs hourly)")
 
 
-__all__ = ["castle_ext", "castle_static_files", "db", "castle_start", "castle_stop"]
+__all__ = ["libra_ext", "libra_static_files", "db", "libra_start", "libra_stop"]