feat: Ekklesia Module Package v1, the canonical packager and verifier (ADR 0049)

A separately versioned module is now distributed as one deterministic
.tar.gz and its SHA-256, produced by an Ekklesia-owned packager and checked by
Core before anything is installed. This slice implements the portable `any`
target, with the module template as the end-to-end proof. ADR 0049 is
accepted.

@ekklesia/contracts: the Module Package v1 contract. The strict
ekklesia.package.json schema (packageFormat 1, identity, target, runtime,
provenance, incorporated Ekklesia packages, strict transitional facts, an
exact byte-wise-sorted file list with size and SHA-256), target names, and the
generated runtime package.json.

@ekklesia/module-pack (new, tooling): `ekklesia-pack-module --module <dir>
--target any --out <dir> --source-revision <commit>`.
- Bundles server, schema, and jobs with esbuild, SDK, contracts, and Drizzle
  included; only Node built-ins remain imports. Any warning, unresolved
  import, external dependency, or native or platform-specific package fails.
- Copies browser artifacts as built, after proving them current, and the
  migrations; generates package.json and ekklesia.package.json; never ships
  src, tests, declarations, source maps, or workspace ranges.
- THIRD_PARTY_NOTICES: every third-party package traced from the bundles'
  own inputs, credited once with its declared licence and every licence,
  copying, copyright, and notice file it ships. A missing licence fails; a
  missing text fails unless its standard text is complete without copyright
  lines (Apache-2.0, vendored, needed by drizzle-orm).
- Deterministic ustar and gzip: sorted paths, uid/gid 0, empty names, mtime
  0, 0755/0644, no links. Byte-identical across runs and machines.
- Writes only the archive and its .sha256; never deploys, links, or installs,
  so the workspace's install state is untouched.

Core: verifyModulePackage and `verify-module-package.js <archive>
[--sha256 | --sha256-file] [--extract-to <new dir>]`. Reads the archive in
memory and refuses links, special entries, setuid/setgid/sticky modes, unsafe
or escaping paths, and a second top-level directory; checks metadata, every
file, identity, target, Node.js range, SDK, and the transitional Drizzle
agreement; runs the platform's module and migration discovery; loads the
backend once in a forked process with an empty environment; only then
extracts, with normalized modes, into a new directory. Errors are sanitized.

@ekklesia/module-ui-build: analyzeModuleUi reports each artifact's inputs
and whether the built file is current. The nested stylesheet build now works
from the module directory, so artifacts no longer depend on the caller's
working directory.

The split deploy smoke builds the package with the canonical packager
(scripts/lib/build-module-package.Dockerfile replaces the test-only pnpm
deploy packaging), verifies it with the same generic image, installs the
verified tree, removes it, and reinstalls the exact same archive.

Co-Authored-By: Claude Opus 5.5 <[email protected]>

scripts/lib/build-module-package.Dockerfile

@@ -0,0 +1,31 @@
+# Builds the repository's module template and packages it with the canonical Ekklesia packager
+# (`@ekklesia/module-pack`, ADR 0049), in a clean container from a clean copy of the checkout. The
+# deploy smoke test uses it because a CI job that drives Docker has no Node.js of its own. The
+# packaging itself is exactly what a module's CI runs; this file only provides the environment.
+#
+#   DOCKER_BUILDKIT=1 docker build --file scripts/lib/build-module-package.Dockerfile \
+#     --build-arg SOURCE_REVISION=<full commit id> --output type=local,dest=<directory> .
+#
+# writes <directory>/example-<version>-any.tar.gz and its .sha256 line. No image is produced.
+#
+# The same pinned Node.js base as deploy/Dockerfile, so the package is built by the runtime it is
+# installed into.
+FROM node:24.18.0-trixie-slim@sha256:ae91dcc111a68c9d2d81ff2a17bda61be126426176fde6fe7d08ab13b7f50573 AS build
+ENV COREPACK_ENABLE_DOWNLOAD_PROMPT=0 \
+    PNPM_HOME=/pnpm \
+    TURBO_TELEMETRY_DISABLED=1 \
+    DO_NOT_TRACK=1
+WORKDIR /opt/source
+COPY package.json ./
+RUN corepack enable && corepack install
+COPY . .
+RUN --mount=type=cache,id=ekklesia-pnpm-store,target=/pnpm/store \
+    pnpm install --frozen-lockfile --store-dir /pnpm/store
+RUN pnpm exec turbo run build --filter=@ekklesia/module-template --filter=@ekklesia/module-pack
+ARG SOURCE_REVISION
+RUN test -n "$SOURCE_REVISION" && \
+    node packages/module-pack/bin/ekklesia-pack-module.mjs --module templates/module --target any \
+      --out /package --source-revision "$SOURCE_REVISION"
+
+FROM scratch AS package
+COPY --from=build /package/ /

scripts/lib/test-module-package.Dockerfile

@@ -1,50 +0,0 @@
-# TEST-ONLY. Builds the repository's module template as one self-contained installed-module directory
-# for scripts/smoke-deploy.sh, which installs it into a deployment's module storage (ADR 0048). It is
-# not a module package format and defines none: the archive format, signing, and transport of real
-# module packages are deferred. No image is produced; the build's only output is the directory:
-#
-#   DOCKER_BUILDKIT=1 docker build --file scripts/lib/test-module-package.Dockerfile \
-#     --output type=local,dest=<directory> .
-#
-# writes <directory>/example: the module's package.json, manifest, built artifacts, migrations, and a
-# node_modules holding exactly its production dependencies, including its own copies of the Module
-# SDK, the contracts, and Drizzle. Nothing in it resolves to anything outside it, because the
-# platform lends an installed module nothing.
-#
-# The same pinned Node.js base as deploy/Dockerfile, so the package targets the runtime it is
-# installed into. Drizzle comes from the platform's own lockfile, which is what keeps it the exact
-# version the platform uses: a constraint of the current implementation (ADR 0048), not a contract.
-FROM node:24.18.0-trixie-slim@sha256:ae91dcc111a68c9d2d81ff2a17bda61be126426176fde6fe7d08ab13b7f50573 AS build
-ENV COREPACK_ENABLE_DOWNLOAD_PROMPT=0 \
-    PNPM_HOME=/pnpm \
-    TURBO_TELEMETRY_DISABLED=1 \
-    DO_NOT_TRACK=1
-WORKDIR /opt/source
-COPY package.json ./
-RUN corepack enable && corepack install
-COPY . .
-RUN --mount=type=cache,id=ekklesia-pnpm-store,target=/pnpm/store \
-    pnpm install --frozen-lockfile --store-dir /pnpm/store
-RUN pnpm exec turbo run build --filter=@ekklesia/module-template
-# `--legacy` deploys from this workspace without switching it to injected workspace packages; the
-# Module SDK and every other workspace dependency are still copied into the package, built.
-RUN --mount=type=cache,id=ekklesia-pnpm-store,target=/pnpm/store \
-    set -eu; \
-    pnpm --filter @ekklesia/module-template deploy --prod --legacy --store-dir /pnpm/store \
-      /package/example; \
-    rm -f /package/example/README.md; \
-    # pnpm's hoisted self-reference points back into this workspace; an installed module has none.
-    rm -f /package/example/node_modules/.pnpm/node_modules/@ekklesia/module-template; \
-    escaping=""; \
-    for link in $(find /package/example -type l); do \
-      case "$(realpath -m "$link")" in \
-        /package/example/*) ;; \
-        *) escaping="$escaping $link" ;; \
-      esac; \
-    done; \
-    if [ -n "$escaping" ]; then echo "Links escape the package:$escaping" >&2; exit 1; fi; \
-    chmod -R a+rX,go-w /package/example; \
-    cd /package/example && node -e 'import("./dist/server/index.js").then((m) => { if (m.default.id !== "example") process.exit(1); })'
-
-FROM scratch AS package
-COPY --from=build /package/ /