Bundle the first-party Python scripting plugin

plugins/opencad-python/Cargo.toml

@@ -0,0 +1,47 @@
+[package]
+name = "opencad-python"
+version = "0.1.0"
+edition = "2021"
+description = "Python scripting for Open CAD Studio (embeds RustPython)."
+license = "GPL-3.0-only"
+
+[workspace]
+resolver = "2"
+
+# A plugin is a C-ABI dynamic library the host loads at runtime.
+[lib]
+crate-type = ["cdylib"]
+
+[features]
+default = []
+# Requires an external HostApi patch providing run_command/set_selection.
+# Never enable against the released OCS host: nested command replay can hang.
+experimental-command-replay = []
+# Requires the general HostApi system-variable methods in this OCS fork.
+experimental-host-settings = []
+# Requires the in-tree OCS host API v7.
+experimental-host-model = ["dep:serde_json"]
+
+[dependencies]
+# The stable contract, with the runtime `host` surface (HostApi / BuiltinPlugin).
+ocs_plugin_api = { path = "../../crates/ocs_plugin_api", features = ["host"] }
+# Embedded interpreter for Phase 1 (see this crate's PLUGIN.md and ROADMAP.md).
+# default-features = false, no "host_env": that default feature bakes `posix`
+# (full filesystem access, confirmed: open('/etc/passwd').read() works with
+# it on) and `_ctypes` (raw native-code-calling primitives) into every
+# interpreter unconditionally, regardless of never adding rustpython-stdlib —
+# see this crate's PLUGIN.md's sandboxing section for the audit that found
+# this. "compiler" is required (Vm::compile); "gc" matches the default set
+# for normal memory behavior. "wasmbind"/"stdio" are irrelevant off-web.
+rustpython-vm = { version = "0.5", default-features = false, features = ["compiler", "gc"] }
+serde_json = { version = "1", optional = true }
+
+[build-dependencies]
+# No "host" feature: `type_registry`/`type_registry_types` (the only modules
+# build.rs touches, via `get_embedded_type_registry_json`) are unconditionally
+# compiled and depend on nothing but `serde` — the "host" feature only adds
+# the acadrust-typed runtime surface build.rs has no use for. See this crate's
+# own `src/lib.rs` doc comment on the module split.
+ocs_plugin_api = { path = "../../crates/ocs_plugin_api" }
+serde = { version = "1", features = ["derive"] }
+serde_json = "1"