fix(rpc agent): allow connect as node rpc

[arnaud-moncel]

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Note

Fix RPC agent Rails routes to include URL path parameters in request params

• Adds extract_request_params helper in BaseRoute that merges path_parameters, query_parameters, and request_parameters so that URL segment params like :collection_name are available to route handlers.
• Route handlers in list, create, aggregate, and action_form previously received only query/body params, causing collection_name to be missing when provided as a path segment.
• Changes the missing collection_name fallback return value from {} to [] across all affected handlers.

Changes since #310 opened

• Removed early-return guards from route handlers to raise errors for missing or unknown collections [8e3ff47]
• Refactored parameter extraction to use indifferent access without deep key symbolization [8e3ff47]
• Updated route handler specs to expect errors instead of empty results for unknown collections [8e3ff47]
• Added test coverage for ForestAdminRpcAgent::Routes::Aggregate#handle_request to verify that when the aggregation payload omits the :groups key, Aggregation.new is invoked with groups defaulting to an empty array [e0ffe0d]
• Added test coverage for ForestAdminRpcAgent::Routes::BaseRoute#extract_request_params to verify parameter merging behavior from path, query, and body sources with indifferent access and proper filtering of Rails-internal keys [e0ffe0d]

^{Macroscope summarized cc8ced2.}

[matthv]

Nice catch on the missing path_parameters merge.

I suggest to add a regression test for extract_request_params in base_route_spec.rb.
The specs were updated from eq({}) to eq([]) but none actually test the scenario being fixed (collection_name resolved from path_parameters only)

[matthv]

LGTM 🚀

[forest-bot]

🎉 This PR is included in version 1.30.6 🎉

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