chore: Add research-method skill #855

Job	Run time
Build and test documentation	59s
Code quality (ty and pre-commit hooks)	54s
Tests (py3.12, ubuntu-latest, float32, full)	1m 23s
Tests (py3.10.0, ubuntu-latest, float32, full, lower_bounds)	1m 23s
Tests (py3.10, ubuntu-latest, float32, full)	1m 16s
Tests (py3.14, ubuntu-latest, float32, none)	56s
Tests (py3.13, ubuntu-latest, float32, full)	1m 27s
Tests (py3.14, macOS-latest, float32, full)	56s
Tests (py3.14, ubuntu-latest, float32, full, torch-nightly)	1m 31s
Tests (py3.11, ubuntu-latest, float32, full)	1m 17s
Tests (py3.14, ubuntu-latest, float64, full)	1m 4s
Tests (py3.14, ubuntu-latest, float32, full)	59s
Tests (py3.14, windows-latest, float32, full)	1m 54s
	15m 59s

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