Package portable grid agent operation (#134)

docs/grid-agent-release-evidence.md

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+# Grid-agent release evidence
+
+This checked-in measurement is the packaging baseline for milestone 14. It is
+not a downloadable artifact or a substitute for regenerating evidence for each
+release candidate.
+
+- Measured: 2026-08-18
+- Host: `aarch64-unknown-linux-gnu`
+- Rust: `rustc 1.97.1 (8bab26f4f 2026-07-14)`
+- Command: `cargo build --locked --release -p metacrate-grid-agent --features live-grid`
+- Profile: workspace `release` (`opt-level=1`, `debug=0`, incremental disabled,
+  256 codegen units to stay within the packaging memory ceiling)
+- Binary: `target/release/metacrate-grid-agent`
+- Size: 28,658,000 bytes
+- SHA-256: `c8ed694c6817ce9a897897f521e174fc8d90378ddf46565336c747e22d876dfc`
+- Normal/build dependency inventory: 192 unique Cargo package/version/path
+  identities from `cargo tree --locked -p metacrate-grid-agent --features
+  live-grid -e normal,build`
+- Dynamic ELF dependencies: the AArch64 loader, `libc`, `libm`, and `libgcc_s`
+  only. TLS's declared `aws-lc-sys` component is statically linked.
+
+The audited tree contains the MetaCrate agent, the original compatibility
+crates it consumes, the pure-Rust J2K/meshing/rendering path, Tokio, Reqwest,
+Rustls, AWS-LC, terminal/serialization/bounds utilities, and their build-time
+Rust tooling. It contains no CLR/Mono/.NET runtime, Python/Node/Lua scripting
+runtime, provider SDK, Skia/GPU stack, OpenJPEG feature, shell/subprocess
+adapter, or dynamically loaded undeclared application library.
+
+Regenerate for a release candidate with the commands in
+[grid-agent-operations.md](grid-agent-operations.md), retain the full unabridged
+`cargo tree` output as CI/release evidence, compare size intentionally, and run
+the dependency-policy and consolidated required gates. Binary hashes and sizes
+will change when source, compiler, target, profile, or dependency versions
+change.