refactor(vm): add host-agnostic resource scope

.github/workflows/ci.yml

@@ -69,6 +69,17 @@ jobs:
       - name: Tests
         working-directory: rustscript
         run: cargo test --workspace
+      - name: External host-extension fixture
+        working-directory: rustscript
+        run: |
+          # The standalone fixture consumes only the public host-extension SDK.
+          # It is its own (detached) workspace, so both commands run against
+          # the job-level CARGO_TARGET_DIR (gitignored) — never a nested
+          # target/ inside tests/fixtures/external-host-extension. --locked
+          # pins the committed fixture Cargo.lock so drift in the pd-vm
+          # dependency edge set fails CI instead of silently re-resolving.
+          cargo check --locked --manifest-path tests/fixtures/external-host-extension/Cargo.toml
+          cargo test --locked --manifest-path tests/fixtures/external-host-extension/Cargo.toml
 
   pd-vm-cli:
     name: pd-vm CLI (${{ matrix.os }})

Cargo.toml

@@ -5,6 +5,7 @@ members = [
     "pd-vm-nostd",
     "pd-vm-wasm",
     "crates/rustscript",
+    "crates/pd-host-schema",
 ]
 resolver = "2"
 
@@ -86,14 +87,14 @@ edge_abi = { package = "pd-edge-abi", version = "0.1.1", default-features = fals
 futures-channel = "0.3"
 paste = "1"
 regex = "1"
-serde = "1"
+serde = { version = "1", features = ["derive"] }
 serde_json = "1"
 rt-format = "0.3.1"
 self_cell = "1"
 rustyline = { version = "14", optional = true }
 
 [target.'cfg(windows)'.dependencies]
-windows-sys = { version = "0.59", features = ["Win32_System_Diagnostics_Debug", "Win32_System_Memory", "Win32_System_ProcessStatus", "Win32_System_Threading"] }
+windows-sys = { version = "0.59", features = ["Win32_System_Diagnostics_Debug", "Win32_System_Diagnostics_ToolHelp", "Win32_System_Memory", "Win32_System_ProcessStatus", "Win32_System_Threading"] }
 
 [target.'cfg(unix)'.dependencies]
 libc = "0.2"
@@ -103,12 +104,24 @@ futures-util = "0.3"
 rcgen = "0.13"
 syn = { version = "2", features = ["full"] }
 tokio = { version = "1", features = ["macros", "rt", "time", "sync"] }
+trybuild = "1"
+pd-host-schema = { path = "./crates/pd-host-schema" }
 
 [[test]]
 name = "host_binding_generation_tests"
 path = "tests/host_binding_generation_tests.rs"
 required-features = ["cranelift-jit"]
 
+[[test]]
+name = "host_resource_table_tests"
+path = "tests/host_resource_table_tests.rs"
+required-features = ["runtime"]
+
+[[test]]
+name = "execution_scope_tests"
+path = "tests/execution_scope_tests.rs"
+required-features = ["runtime"]
+
 [[test]]
 name = "http_host_tests"
 path = "tests/vm/http_host_tests.rs"
@@ -119,12 +132,52 @@ name = "http_sse_tests"
 path = "tests/vm/http_sse_tests.rs"
 required-features = ["runtime", "http-client"]
 
+[[test]]
+name = "io_http_coexistence_tests"
+path = "tests/vm/io_http_coexistence_tests.rs"
+required-features = ["runtime", "http-client"]
+
 
 
 [[test]]
 name = "sqlite_host_tests"
 path = "tests/vm/sqlite_host_tests.rs"
 required-features = ["sqlite"]
 
+[[test]]
+name = "standard_staging_tests"
+path = "tests/vm/standard_staging_tests.rs"
+required-features = ["runtime", "http-client", "sqlite"]
+
+[[test]]
+name = "core_host_boundary_tests"
+path = "tests/core_host_boundary_tests.rs"
+required-features = ["runtime"]
+
+[[test]]
+name = "host_context_arch_tests"
+path = "tests/host_context_arch_tests.rs"
+required-features = ["runtime"]
+
+[[test]]
+name = "host_context_execution_scope_tests"
+path = "tests/host_context_execution_scope_tests.rs"
+required-features = ["runtime"]
+
+[[test]]
+name = "host_resource_type_inference_tests"
+path = "tests/host_resource_type_inference_tests.rs"
+
+[[test]]
+name = "vm_resource_ownership_consumer_tests"
+path = "tests/vm_resource_ownership_consumer_tests.rs"
+required-features = ["runtime"]
+
+[[test]]
+name = "vm_execution_scope_reset_tests"
+path = "tests/vm_execution_scope_reset_tests.rs"
+required-features = ["runtime"]
+
 [build-dependencies]
 syn = { version = "2", features = ["full"] }
+pd-host-schema = { path = "./crates/pd-host-schema" }

README.md

@@ -16,6 +16,7 @@ The complete language, runtime, and implementation guides live on the [RustScrip
 - [Runtime controls and artifacts](https://rustscript.org/docs/reference/runtime-controls/)
 - [Callable-driven HTTP client contract](docs/http-client.md)
 - [Script call frames and callable values](docs/callable-runtime.md)
+- [Scoped host resources and the host extension SDK](docs/scoped-host-resources.md)
 - [Compiler frontend syntax and feature support](src/compiler/frontends/README.md)
 
 ## Crate usage