feat: add find command for catalog search

.changes/unreleased/added-20260209-171617.yaml

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+kind: added
+body: Add new 'fab find' command for searching the Fabric catalog across workspaces
+time: 2026-02-09T17:16:17.2056327+02:00
+custom:
+    Author: nschachter
+    AuthorLink: https://github.com/nschachter

src/fabric_cli/client/fab_api_catalog.py

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+# Copyright (c) Microsoft Corporation.
+# Licensed under the MIT License.
+
+"""Catalog API client for searching Fabric items across workspaces.
+
+API Reference: POST https://api.fabric.microsoft.com/v1/catalog/search
+Required Scope: Catalog.Read.All
+"""
+
+from argparse import Namespace
+
+from fabric_cli.client import fab_api_client as fabric_api
+from fabric_cli.client.fab_api_types import ApiResponse
+
+
+def catalog_search(args: Namespace, payload: dict) -> ApiResponse:
+    """Search the Fabric catalog for items.
+
+    https://learn.microsoft.com/en-us/rest/api/fabric/core/catalog/search
+
+    Args:
+        args: Namespace with request configuration
+        payload: Dict with search request body:
+            - search (required): Text to search across displayName, description, workspaceName
+            - pageSize: Number of results per page
+            - continuationToken: Token for pagination
+            - filter: OData filter string, e.g., "Type eq 'Report' or Type eq 'Lakehouse'"
+
+    Returns:
+        ApiResponse with search results containing:
+            - value: List of ItemCatalogEntry objects
+            - continuationToken: Token for next page (if more results exist)
+
+    Note:
+        The following item types are NOT searchable via this API:
+        Dashboard
+
+        Note: Dataflow Gen1 and Gen2 are currently not searchable; only Dataflow Gen2
+        CI/CD items are returned (as type 'Dataflow').
+        Scorecards are returned as type 'Report'.
+    """
+    args.uri = "catalog/search"
+    args.method = "post"
+    # Use raw_response to avoid auto-pagination (we handle pagination in display)
+    args.raw_response = True
+    return fabric_api.do_request(args, json=payload)
+

src/fabric_cli/commands/find/__init__.py

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+# Copyright (c) Microsoft Corporation.
+# Licensed under the MIT License.