refactor: rename .oikb.yaml top-level key from sync: to sources:

Backward compatible — both sync: and sources: are accepted,
sources: takes precedence.

README.md

@@ -52,7 +52,7 @@ Features:
 
 ```yaml
 # .oikb.yaml
-sync:
+sources:
   - source: github:owner/repo
     kb-id: team-wiki
     interval: 1h
@@ -119,7 +119,7 @@ Some connectors need an optional extra: `pip install oikb[gdrive]`, `pip install
 Route files from a single source to different Knowledge Bases by glob pattern:
 
 ```yaml
-sync:
+sources:
   - source: github:owner/repo
     routes:
       "docs/**/*.md": docs-kb
@@ -131,7 +131,7 @@ sync:
 Narrow what gets synced with include/exclude globs:
 
 ```yaml
-sync:
+sources:
   - source: github:owner/repo
     kb-id: docs-only
     filter:

src/oikb/cli.py

@@ -282,10 +282,12 @@ def _load_oikb_yaml() -> list[dict] | None:
     with open(yaml_path) as f:
         data = yaml.safe_load(f)
 
-    if not data or "sync" not in data:
+    if not data:
         return None
 
-    return data["sync"]
+    # Prefer sources: (new), fall back to sync: (legacy).
+    entries = data.get("sources") or data.get("sync")
+    return entries or None
 
 
 # ── sync ────────────────────────────────────────────────────────
@@ -747,7 +749,7 @@ def daemon(port: int, no_server: bool, config_file: str | None):
         import yaml
         with open(config_file) as f:
             data = yaml.safe_load(f)
-        entries = data.get("sync", []) if data else []
+        entries = (data.get("sources") or data.get("sync", [])) if data else []
     else:
         entries = _load_oikb_yaml()