feat(ai): services partages A2 + SSE streaming B4 + confirmations UI B5 (#79)

backend/services/search.py

@@ -0,0 +1,41 @@
+"""Search services shared by REST routes and the AI tool layer."""
+
+from __future__ import annotations
+
+from typing import Any
+
+
+def search_vaults(
+    q: str,
+    vault: str = "all",
+    tag: str | None = None,
+    limit: int = 50,
+    offset: int = 0,
+) -> dict[str, Any]:
+    """Full-text search with pagination, returned as the API response payload.
+
+    No permission filtering is applied here: callers that need it (the tool
+    layer) filter the ``results`` list themselves.
+    """
+    from backend.search import search
+
+    all_results = search(q, vault_filter=vault, tag_filter=tag)
+    total = len(all_results)
+    page = all_results[offset: offset + limit]
+    return {
+        "query": q,
+        "vault_filter": vault,
+        "tag_filter": tag,
+        "count": len(page),
+        "total": total,
+        "offset": offset,
+        "limit": limit,
+        "results": page,
+    }
+
+
+def list_tags(vault: str | None = None) -> dict[str, int]:
+    """Return tag → count, optionally restricted to a single vault."""
+    from backend.search import get_all_tags
+
+    return get_all_tags(vault_filter=vault)