feat(sofiia-console): add docs index and runbook search API (FTS5)

adds SQLite docs index (files/chunks + FTS5) and CLI rebuild

exposes authenticated runbook search/preview/raw endpoints

Made-with: Cursor

services/sofiia-console/app/main.py

@@ -56,6 +56,7 @@ from .nodes import get_nodes_dashboard
 from .monitor import collect_all_nodes
 from .ops import run_ops_action, OPS_ACTIONS
 from .docs_router import docs_router
+from .runbooks_router import runbooks_router
 from . import db as _app_db
 from .metrics import (
     SOFIIA_SEND_REQUESTS_TOTAL,
@@ -462,6 +463,8 @@ app.add_middleware(
 
 # Projects + Documents + Sessions + Dialog Map API
 app.include_router(docs_router)
+# Runbooks / docs index (read-only search & preview, PR1.1)
+app.include_router(runbooks_router)
 
 # ── WebSocket event bus ───────────────────────────────────────────────────────
 _ws_clients: Set[WebSocket] = set()