[marcocaggioni]

Adds the two linear-polymer oscillatory sweeps missing from v0.1.0, extracted from the same TRIOS file (a_remake_dhr2.json) as the existing flow dataset:

• caggioni_linear_polymer_amplitude_sweep — 41 points, strain 1000 → 0.1 % at fixed ω = 1 rad/s, 25 °C. Locates the linear viscoelastic regime (G′/G″ strain-independent to γ₀ ≈ 10–25 %); feeds the Delaware–Rutgers rule.
• caggioni_linear_polymer_frequency_sweep — 31 points, ω 100 → 0.1 rad/s at γ₀ = 0.5 %, 25 °C. Feeds the Cox–Merz superposition.

Schema notes: both use the pre-existing amplitude_sweep / frequency_sweep measurement types (the G′/G″ plot path was already implemented, no library changes needed). Tidy columns strain_pct / omega_rad/s + Gp_Pa / Gpp_Pa, sorted ascending, no NaNs. Community provenance, no invented DOIs. The flow dataset's description now cross-references the companion sweeps.

Verification:

• pytest: 39 passed
• rheodata.list() → 14 datasets; load() + plot() verified on both new datasets
• rheodata.search(experiment='frequency_sweep') / tag='cox-merz' find the new data
• docs page generation: 14 pages + plots render clean
• wheel builds as rheopy_rheodata-0.1.1-py3-none-any.whl (14 datasets from installed wheel)
• no P&G references

This restores full executability of the Cox–Merz / Delaware–Rutgers sections of rheofit's Carreau walkthrough (follow-up rheofit/rheolite PRs come next).