plan oxidation

- add the drivers
 - add the uniffi build toolchain
 - create the plan document

scripts/sync-matrix-rtc-sdk.sh

@@ -0,0 +1,52 @@
+#!/usr/bin/env bash
+#
+# Copyright 2026 Element Creations Ltd.
+#
+# SPDX-License-Identifier: AGPL-3.0-only OR LicenseRef-Element-Commercial
+# Please see LICENSE in the repository root for full details.
+#
+# Vendors the matrix-rtc crate's uniffi web bindings into
+# src/matrix-rtc-sdk/generated/. Until the crate ships as an npm package this
+# is how Element Call picks up a new build of it: build it there, copy the
+# generated TypeScript, the wasm-bindgen glue and the wasm here.
+#
+#   scripts/sync-matrix-rtc-sdk.sh [path-to-MatrixSdkArchitectureDraft] [--no-build]
+#
+# The build uses web-test-app/ubrn.element-call.config.yaml (feature `uniffi`
+# only, release profile, its own output directory so the app's test build is
+# left alone). Pass --no-build to copy whatever was built last.
+
+set -euo pipefail
+
+DRAFT="${1:-../matrix-rust-rtc/MatrixSdkArchitectureDraft}"
+BUILD=1
+for arg in "$@"; do
+  [[ "$arg" == "--no-build" ]] && BUILD=0
+done
+
+APP="$DRAFT/web-test-app"
+GENERATED="$APP/src/generated-element-call"
+DEST="$(cd "$(dirname "$0")/.." && pwd)/src/matrix-rtc-sdk/generated"
+
+if [[ ! -f "$APP/ubrn.element-call.config.yaml" ]]; then
+  echo "No web-test-app/ubrn.element-call.config.yaml under $DRAFT" >&2
+  exit 1
+fi
+
+if [[ "$BUILD" == 1 ]]; then
+  (cd "$APP" && npx ubrn build web --config ubrn.element-call.config.yaml --release)
+fi
+
+mkdir -p "$DEST/wasm-bindgen"
+cp "$GENERATED/matrix_rtc.ts" "$GENERATED/matrix_rtc-ffi.ts" "$DEST/"
+cp "$GENERATED/wasm-bindgen/index.js" "$GENERATED/wasm-bindgen/index_bg.wasm" "$DEST/wasm-bindgen/"
+
+REV="$(git -C "$DRAFT" rev-parse --short HEAD 2>/dev/null || echo unknown)"
+DIRTY="$(git -C "$DRAFT" status --porcelain 2>/dev/null | grep -q . && echo '-dirty' || true)"
+cat > "$DEST/VERSION" <<VERSION
+matrix-rtc (MatrixSdkArchitectureDraft) ${REV}${DIRTY}
+built $(date -u +%Y-%m-%dT%H:%M:%SZ) by scripts/sync-matrix-rtc-sdk.sh
+VERSION
+
+echo "Synced matrix-rtc bindings from $DRAFT ($REV$DIRTY) into $DEST"
+ls -la "$DEST" "$DEST/wasm-bindgen"