docs: add Cursor Cloud dev environment instructions to AGENTS.md

[jepegit]

Summary

Sets up and documents the Cursor Cloud development environment for cellpy. The only code change is a new ## Cursor Cloud specific instructions section in AGENTS.md; no source code was modified.

Environment was provisioned and verified end-to-end:

• Installed uv (Python toolchain) and the mdbtools system package (needed to read Arbin .mdb/.res files on Linux).
• uv sync installs Python 3.13 + project and dev deps from uv.lock (cellpycore==0.1.5 from PyPI).
• Configured the startup update script to run uv sync (idempotent, works from repo root or workspace root).

Verification

• ✅ uv run cellpy setup --silent — 2/2 checks passed (found mdb-export)
• ✅ uv run cellpy info --check — 3/3 checks passed
• ✅ uv run pytest -m essential --ignore=tests/test_plotutils_summary_plot.py — 71 passed
• ✅ uv run black --check cellpy / uv run flake8 cellpy — run successfully (pre-existing findings only, not from this change)
• ✅ Hello-world library task: loaded a real Arbin dataset via example_data.raw_file() → 10,261 raw rows, 103-row step table, 18-cycle summary, capacity curve computed

cellpy_hello_world.log

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Approved: documentation-only AGENTS.md update adding Cursor Cloud dev instructions. Cursor Bugbot was not present on this PR (signal skipped); no reviewers assigned.

  

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