P10 (WIP): release build script, Dockerfile, conda recipes, fresh-VM acceptance task

scripts/build_dist.sh: sdist + pure wheel + manylinux_2_28 kernel wheels (maturin --zig,
both architectures). Dockerfile (multi-stage, kernels included, non-root user).
packaging/conda/{simurg,simurg-core}. scripts/p10/digest.py: platform-independent content
digests of GTC/VCF/summary outputs. Cloud task p10 installs the artifacts on a fresh
Ubuntu VM and runs the tutorial with pip, Docker and conda installs. trial.sh picks the
arm64/amd64 image from the instance type and can run instances in parallel (PARALLEL=1).
Licence files ship in both wheels; Rust crate notices added.

packaging/conda/simurg-core/meta.yaml

@@ -0,0 +1,40 @@
+# conda recipe for the optional compiled kernels of SimurgArray (Rust, PyO3; abi3 for Python >= 3.12).
+#   conda build packaging/conda/simurg-core -c conda-forge
+{% set version = load_file_regex(load_file="Cargo.toml", regex_pattern='version = "([^"]+)"', from_recipe_dir=False).group(1) %}
+
+package:
+  name: simurg-core
+  version: {{ version }}
+
+source:
+  path: ../../../rust/simurg-core
+
+build:
+  number: 0
+  skip: true  # [win]
+  script: {{ PYTHON }} -m pip install . --no-deps -vv
+
+requirements:
+  build:
+    - {{ compiler('c') }}
+    - {{ compiler('rust') }}
+  host:
+    - python >=3.12
+    - pip
+    - maturin >=1.7,<2
+  run:
+    - python >=3.12
+    - numpy >=1.26
+
+test:
+  imports:
+    - simurg_core
+  commands:
+    - python -c "import simurg_core, numpy as np; assert simurg_core.log10(np.array([0.0]))[0] == -np.inf"
+
+about:
+  summary: Optional compiled kernels of SimurgArray (results identical to the pure-Python paths)
+  license: MIT
+  license_file:
+    - LICENSE
+    - NOTICE