diff --git a/package.json b/package.json
index d608978..f64ac51 100644
--- a/package.json
+++ b/package.json
@@ -10,7 +10,7 @@
     "build": "pnpm -r --if-present build && dotnet build supervisor/Dada.Supervisor/Dada.Supervisor.csproj --configuration Release",
     "typecheck": "pnpm -r --if-present typecheck",
     "test:unit:contract": "node --test tests/toolchain/frozen-toolchain.test.mjs",
-    "test:unit": "pnpm --filter @dada/shared-contracts build && pnpm run test:unit:contract && vitest run tests/unit",
+    "test:unit": "pnpm --filter @dada/asset-compiler build && pnpm --filter @dada/shared-contracts build && pnpm run test:unit:contract && vitest run tests/unit",
     "test:integration": "vitest run tests/integration",
     "test:api": "pnpm check:openapi && vitest run tests/api",
     "test:worker": "pnpm --filter @dada/worker build && node scripts/worker-smoke.mjs && vitest run tests/worker",
@@ -85,7 +85,9 @@
     "test:wp4-05": "node scripts/run-wp4-05-validation.mjs",
     "test:wp4-05:red": "node scripts/run-wp4-05-validation.mjs --phase red",
     "test:wp4-06": "node scripts/run-wp4-06-validation.mjs",
-    "test:wp4-06:red": "node scripts/run-wp4-06-validation.mjs --phase red"
+    "test:wp4-06:red": "node scripts/run-wp4-06-validation.mjs --phase red",
+    "test:wp5-01": "node scripts/run-wp5-01-validation.mjs",
+    "test:wp5-01:red": "node scripts/run-wp5-01-validation.mjs --phase red"
   },
   "devDependencies": {
     "@playwright/test": "1.62.0",
diff --git a/packages/asset-compiler/package.json b/packages/asset-compiler/package.json
new file mode 100644
index 0000000..0df8cbc
--- /dev/null
+++ b/packages/asset-compiler/package.json
@@ -0,0 +1,21 @@
+{
+  "name": "@dada/asset-compiler",
+  "version": "0.0.0",
+  "private": true,
+  "type": "module",
+  "exports": {
+    ".": "./dist/index.js"
+  },
+  "types": "./dist/index.d.ts",
+  "scripts": {
+    "build": "tsc -p tsconfig.json",
+    "typecheck": "tsc --noEmit -p tsconfig.json",
+    "compile": "node dist/cli.js"
+  },
+  "dependencies": {
+    "csv-parse": "7.0.2"
+  },
+  "devDependencies": {
+    "typescript": "7.0.2"
+  }
+}
diff --git a/packages/asset-compiler/src/cli.ts b/packages/asset-compiler/src/cli.ts
new file mode 100644
index 0000000..fc38a60
--- /dev/null
+++ b/packages/asset-compiler/src/cli.ts
@@ -0,0 +1,20 @@
+import { compileAssetArchive } from "./index.js";
+
+function argument(name: string): string {
+  const index = process.argv.indexOf(name);
+  const value = index >= 0 ? process.argv[index + 1] : undefined;
+  if (!value) throw new Error(`missing ${name}`);
+  return value;
+}
+
+try {
+  const result = compileAssetArchive({
+    manifestPath: argument("--manifest"),
+    outputDirectory: argument("--output"),
+    releaseVersion: argument("--release-version"),
+  });
+  process.stdout.write(`${JSON.stringify(result.report, null, 2)}\n`);
+} catch (error) {
+  process.stderr.write(`${error instanceof Error ? error.message : "asset compilation failed"}\n`);
+  process.exitCode = 1;
+}
diff --git a/packages/asset-compiler/src/index.ts b/packages/asset-compiler/src/index.ts
new file mode 100644
index 0000000..b8644f7
--- /dev/null
+++ b/packages/asset-compiler/src/index.ts
@@ -0,0 +1,379 @@
+import { createHash } from "node:crypto";
+import { existsSync, mkdirSync, readFileSync, realpathSync, statSync, writeFileSync } from "node:fs";
+import { isAbsolute, dirname, join, relative, resolve, sep } from "node:path";
+
+import { parse } from "csv-parse/sync";
+
+type JsonObject = Record<string, unknown>;
+type CsvRow = Record<string, string>;
+
+export interface AssetCompilerOptions {
+  manifestPath: string;
+  outputDirectory: string;
+  releaseVersion: string;
+}
+
+export interface AssetCompilerReport {
+  schema_version: "asset-compiler-report/v1";
+  release_version: string;
+  input_manifest_sha256: string;
+  source_files_read: number;
+  source_mutations: number;
+  executed_source_files: number;
+  copied_source_files: number;
+  derived_files: { created: number; reused: number; total: number };
+  status: "passed";
+}
+
+export interface AssetCompilerResult {
+  manifest: JsonObject;
+  report: AssetCompilerReport;
+}
+
+interface SourceRoot {
+  id: string;
+  path: string;
+}
+
+interface TrackedSource {
+  bytes: number;
+  mtime_ms: number;
+  path: string;
+  sha256: string;
+}
+
+interface SourceEntry {
+  canonical_id: string;
+  collection_id: string;
+  collection_root: string;
+  item_directory: string;
+  metadata: JsonObject;
+  metadata_path: string;
+  order: number;
+  row: CsvRow;
+}
+
+interface CollectionConfig {
+  catalogPaths: Array<{ category: string; path: string }>;
+  id: string;
+  root: SourceRoot;
+}
+
+const allowedCollections = new Set(["text_templates", "font_panel", "color_cards", "interactive_stickers"]);
+const releaseVersionPattern = /^[A-Za-z0-9][A-Za-z0-9._-]*$/;
+
+function isRecord(value: unknown): value is JsonObject {
+  return typeof value === "object" && value !== null && !Array.isArray(value);
+}
+
+function stableValue(value: unknown): unknown {
+  if (Array.isArray(value)) return value.map(stableValue);
+  if (!isRecord(value)) return value;
+  return Object.fromEntries(Object.keys(value).sort().map((key) => [key, stableValue(value[key])]));
+}
+
+function stableJson(value: unknown): string {
+  return `${JSON.stringify(stableValue(value), null, 2)}\n`;
+}
+
+function sha256(value: Uint8Array | string): string {
+  return createHash("sha256").update(value).digest("hex").toUpperCase();
+}
+
+function requireRecord(value: unknown, label: string): JsonObject {
+  if (!isRecord(value)) throw new Error(`${label} must be an object`);
+  return value;
+}
+
+function requireString(value: unknown, label: string): string {
+  if (typeof value !== "string" || value.trim() === "") throw new Error(`${label} must be a non-empty string`);
+  return value;
+}
+
+function inside(path: string, root: string): boolean {
+  const candidate = resolve(path);
+  const base = resolve(root);
+  const rest = relative(base, candidate);
+  return rest === "" || (rest !== ".." && !rest.startsWith(`..${sep}`) && !isAbsolute(rest));
+}
+
+function realDirectory(path: string, label: string): string {
+  if (!existsSync(path) || !statSync(path).isDirectory()) throw new Error(`${label} directory is unavailable`);
+  return realpathSync(path);
+}
+
+function resolveSourcePath(pathValue: string, base: string, root: string, label: string): string {
+  const candidate = isAbsolute(pathValue) ? resolve(pathValue) : resolve(base, pathValue);
+  if (!inside(candidate, root)) throw new Error(`${label} is outside the allowed source root`);
+  if (!existsSync(candidate)) throw new Error(`${label} is unavailable`);
+  const actual = realpathSync(candidate);
+  if (!inside(actual, root)) throw new Error(`${label} resolves outside the allowed source root`);
+  return actual;
+}
+
+function relativeReference(pathValue: string, label: string): string {
+  if (isAbsolute(pathValue)) throw new Error(`${label} must be relative`);
+  const normalized = pathValue.replaceAll("\\", "/");
+  if (normalized === "" || normalized === "." || normalized.split("/").includes("..")) throw new Error(`${label} has an unsafe relative path`);
+  return normalized.replace(/^\.\//, "");
+}
+
+function stringList(value: unknown, label: string): string[] {
+  if (value === undefined || value === null || value === "") return [];
+  if (Array.isArray(value)) return value.map((item, index) => requireString(item, `${label}[${index}]`));
+  return [requireString(value, label)];
+}
+
+function dynamicKeys(metadata: JsonObject, row: CsvRow): string[] {
+  const value = metadata.dynamic_keys ?? row.dynamic_keys ?? "";
+  if (value === "") return [];
+  if (Array.isArray(value)) return value.filter((item): item is string => typeof item === "string" && item.trim() !== "").map((item) => item.trim());
+  return requireString(value, "dynamic_keys").split("|").map((item) => item.trim()).filter(Boolean);
+}
+
+function numericOrder(row: CsvRow, fallback: number): number {
+  const value = row.display_order ?? row.panel_order;
+  const parsed = value ? Number(value) : Number.NaN;
+  return Number.isFinite(parsed) ? parsed : fallback;
+}
+
+function collectFiles(metadata: JsonObject, keys: string[], label: string): string[] {
+  const files = isRecord(metadata.files) ? metadata.files : {};
+  return [...new Set(keys.flatMap((key) => stringList(files[key], `${label}.${key}`)).map((item) => relativeReference(item, `${label}.files`)))];
+}
+
+function sourceRootLabel(collectionId: string, root: string, path: string): string {
+  return `${collectionId}/${relative(root, path).replaceAll("\\", "/")}`;
+}
+
+class SourceTracker {
+  private readonly entries = new Map<string, TrackedSource>();
+
+  constructor(private readonly roots: SourceRoot[]) {}
+
+  read(path: string, label: string): Buffer {
+    const root = this.roots.find((item) => inside(path, item.path));
+    if (!root) throw new Error(`${label} is outside tracked sources`);
+    const actual = realpathSync(path);
+    if (!inside(actual, root.path)) throw new Error(`${label} resolves outside tracked sources`);
+    const bytes = readFileSync(actual);
+    const stats = statSync(actual);
+    this.entries.set(actual, {
+      bytes: stats.size,
+      mtime_ms: stats.mtimeMs,
+      path: sourceRootLabel(root.id, root.path, actual),
+      sha256: sha256(bytes),
+    });
+    return bytes;
+  }
+
+  before(): TrackedSource[] {
+    return [...this.entries.values()].sort((left, right) => left.path.localeCompare(right.path));
+  }
+
+  after(): { entries: TrackedSource[]; mutations: number } {
+    const entries = this.before().map((entry) => {
+      const root = this.roots.find((item) => entry.path.startsWith(`${item.id}/`));
+      if (!root) return entry;
+      const actual = resolve(root.path, entry.path.slice(root.id.length + 1));
+      const bytes = readFileSync(actual);
+      const stats = statSync(actual);
+      return { ...entry, bytes: stats.size, mtime_ms: stats.mtimeMs, sha256: sha256(bytes) };
+    });
+    const mutations = entries.reduce((count, entry, index) => {
+      const before = this.before()[index];
+      return count + (before?.sha256 !== entry.sha256 || before?.mtime_ms !== entry.mtime_ms || before?.bytes !== entry.bytes ? 1 : 0);
+    }, 0);
+    return { entries, mutations };
+  }
+}
+
+function readJson(tracker: SourceTracker, path: string, label: string): JsonObject {
+  try {
+    return requireRecord(JSON.parse(tracker.read(path, label).toString("utf8")) as unknown, label);
+  } catch (error) {
+    if (error instanceof SyntaxError) throw new Error(`${label} is not valid JSON`);
+    throw error;
+  }
+}
+
+function readCsv(tracker: SourceTracker, path: string, label: string): CsvRow[] {
+  try {
+    return parse(tracker.read(path, label).toString("utf8"), { bom: true, columns: true, skip_empty_lines: true, trim: true }) as CsvRow[];
+  } catch {
+    throw new Error(`${label} is not valid CSV`);
+  }
+}
+
+function itemDirectoryFor(collection: CollectionConfig, catalogPath: string, row: CsvRow): { directory: string; metadataPath: string } {
+  if (collection.id === "font_panel") {
+    const resourceDir = requireString(row.resource_dir, "font resource_dir");
+    const directory = resolveSourcePath(resourceDir, collection.root.path, collection.root.path, "font resource_dir");
+    return { directory, metadataPath: resolveSourcePath("metadata.json", directory, collection.root.path, "font metadata") };
+  }
+  const canonicalDir = relativeReference(requireString(row.canonical_dir, "canonical_dir"), "canonical_dir");
+  const directory = resolveSourcePath(canonicalDir, dirname(catalogPath), collection.root.path, "canonical_dir");
+  return { directory, metadataPath: resolveSourcePath("metadata.json", directory, collection.root.path, "metadata") };
+}
+
+function collectionConfigs(manifest: JsonObject, manifestDirectory: string): { configs: CollectionConfig[]; roots: SourceRoot[] } {
+  if (!Array.isArray(manifest.collections)) throw new Error("manifest collections must be an array");
+  const configs: CollectionConfig[] = [];
+  const roots: SourceRoot[] = [{ id: "handoff", path: realDirectory(manifestDirectory, "handoff") }];
+  for (const raw of manifest.collections) {
+    const collection = requireRecord(raw, "collection");
+    const id = requireString(collection.id, "collection.id");
+    if (!allowedCollections.has(id)) throw new Error(`unsupported collection ${id}`);
+    const rootPath = resolve(manifestDirectory, requireString(collection.root, `${id}.root`));
+    const root = { id, path: realDirectory(rootPath, `${id}.root`) };
+    if (configs.some((item) => item.id === id)) throw new Error(`duplicate collection ${id}`);
+    roots.push(root);
+    const catalogPaths: Array<{ category: string; path: string }> = [];
+    if (id === "text_templates") {
+      const catalogs = requireRecord(collection.catalogs, `${id}.catalogs`);
+      for (const [category, value] of Object.entries(catalogs).sort(([left], [right]) => left.localeCompare(right))) {
+        const catalog = resolveSourcePath(requireString(value, `${id}.${category}`), root.path, root.path, `${id}.${category}`);
+        catalogPaths.push({ category, path: catalog });
+      }
+    } else {
+      const catalog = resolveSourcePath(requireString(collection.catalog, `${id}.catalog`), root.path, root.path, `${id}.catalog`);
+      catalogPaths.push({ category: id, path: catalog });
+    }
+    configs.push({ catalogPaths, id, root });
+  }
+  if (configs.length !== allowedCollections.size) throw new Error("manifest collections are incomplete");
+  return { configs, roots };
+}
+
+function buildModel(entry: SourceEntry, metadata: JsonObject): JsonObject {
+  const files = isRecord(metadata.files) ? metadata.files : {};
+  const fonts = collectFiles(metadata, ["fonts"], entry.collection_id);
+  const previews = collectFiles(metadata, ["preview"], entry.collection_id);
+  const layerFiles = collectFiles(metadata, ["layer", "package", "renderer_source", "images"], entry.collection_id);
+  const dynamicFiles = collectFiles(metadata, ["lua", "prefab"], entry.collection_id);
+  const fields = dynamicKeys(metadata, entry.row);
+  let nodes: JsonObject[];
+  if (entry.collection_id === "text_templates") {
+    nodes = [{ kind: "text", editable: true, font_references: fonts, slot: "content", text: metadata.default_text ?? entry.row.default_text ?? "" }, { kind: "asset_group", references: layerFiles }];
+  } else if (entry.collection_id === "color_cards") {
+    const runtime = isRecord(metadata.runtime) ? metadata.runtime : {};
+    nodes = [{ kind: "color_card_renderer", palette_slots: 5, renderer_id: typeof runtime.stable_style_id === "string" ? runtime.stable_style_id : entry.row.display_name }];
+  } else if (entry.collection_id === "interactive_stickers") {
+    nodes = [{ conversion_inputs: dynamicFiles, fields, kind: "dynamic_provider", provider: "declarative" }, { kind: "asset_group", references: [...fonts, ...previews] }];
+  } else {
+    const runtime = isRecord(metadata.runtime) ? metadata.runtime : {};
+    nodes = [{ family: entry.row.font_family ?? (typeof runtime.font_family === "string" ? runtime.font_family : ""), kind: "font", resource: entry.row.resource_dir ? "font_package" : "panel" }];
+  }
+  return {
+    family: entry.collection_id,
+    model_schema_version: "TemplateRenderModel/v1",
+    nodes,
+    template_id: entry.canonical_id,
+  };
+}
+
+function writeJson(path: string, value: unknown) {
+  mkdirSync(dirname(path), { recursive: true });
+  writeFileSync(path, stableJson(value));
+}
+
+export function compileAssetArchive(options: AssetCompilerOptions): AssetCompilerResult {
+  if (!releaseVersionPattern.test(options.releaseVersion)) throw new Error("release version is unsafe");
+  const manifestPath = realpathSync(options.manifestPath);
+  const manifestDirectory = realDirectory(dirname(manifestPath), "manifest");
+  const roots = collectionConfigs(readJson(new SourceTracker([{ id: "handoff", path: manifestDirectory }]), manifestPath, "manifest"), manifestDirectory);
+  const tracker = new SourceTracker(roots.roots);
+  const manifest = readJson(tracker, manifestPath, "manifest");
+  const handoff = requireString(manifest.web_handoff, "manifest.web_handoff");
+  const validation = requireString(manifest.validation, "manifest.validation");
+  tracker.read(resolveSourcePath(handoff, manifestDirectory, manifestDirectory, "web handoff"), "web handoff");
+  const validationReport = readJson(tracker, resolveSourcePath(validation, manifestDirectory, manifestDirectory, "validation"), "validation");
+  if (validationReport.all_valid !== true) throw new Error("source validation report is not all_valid");
+
+  const entries: SourceEntry[] = [];
+  for (const config of roots.configs) {
+    for (const catalog of config.catalogPaths) {
+      for (const [index, row] of readCsv(tracker, catalog.path, `${config.id}.${catalog.category}`).entries()) {
+        const identity = requireString(config.id === "font_panel" ? row.candidate_id : row.canonical_id, "canonical_id");
+        const item = itemDirectoryFor(config, catalog.path, row);
+        const metadata = readJson(tracker, item.metadataPath, `${identity}.metadata`);
+        const metadataId = requireString(config.id === "font_panel" ? metadata.candidate_id : metadata.canonical_id, `${identity}.metadata.canonical_id`);
+        if (metadataId !== identity) throw new Error(`${identity} metadata ID mismatch`);
+        entries.push({ canonical_id: identity, collection_id: config.id, collection_root: config.root.path, item_directory: item.directory, metadata, metadata_path: item.metadataPath, order: numericOrder(row, index + 1), row });
+      }
+    }
+  }
+  const ids = new Set<string>();
+  for (const entry of entries) {
+    if (ids.has(entry.canonical_id)) throw new Error(`duplicate canonical_id ${entry.canonical_id}`);
+    ids.add(entry.canonical_id);
+  }
+
+  const outputDirectory = resolve(options.outputDirectory);
+  const outputRoots = [manifestDirectory, ...roots.roots.map((item) => item.path)];
+  if (outputRoots.some((root) => inside(outputDirectory, root))) throw new Error("output directory is inside a source root");
+  mkdirSync(outputDirectory, { recursive: true });
+  const sourceBefore = tracker.before();
+  const derivedRoot = join(outputDirectory, "derived-assets", options.releaseVersion);
+  const derivedStats = { created: 0, reused: 0, total: 0 };
+  const items = entries.map((entry) => {
+    const metadataSha = sha256(stableJson(entry.metadata));
+    const model = buildModel(entry, entry.metadata);
+    const modelBytes = Buffer.from(stableJson(model));
+    const modelHash = sha256(modelBytes);
+    const derivedPath = join(derivedRoot, `${modelHash}.json`);
+    const existing = existsSync(derivedPath);
+    if (existing && !readFileSync(derivedPath).equals(modelBytes)) throw new Error("derived content hash collision");
+    if (existing) derivedStats.reused += 1; else { mkdirSync(derivedRoot, { recursive: true }); writeFileSync(derivedPath, modelBytes); derivedStats.created += 1; }
+    derivedStats.total += 1;
+    const files = isRecord(entry.metadata.files) ? entry.metadata.files : {};
+    const preview = stringList(files.preview, "preview")[0];
+    const defaultFont = stringList(files.fonts, "fonts")[0];
+    const runtime = isRecord(entry.metadata.runtime) ? entry.metadata.runtime : {};
+    const canonicalPath = relative(entry.collection_root, entry.item_directory).replaceAll("\\", "/");
+    const item: JsonObject = {
+      canonical_id: entry.canonical_id,
+      canonical_resource_reference: { collection: entry.collection_id, path: canonicalPath },
+      category: entry.row.category || entry.collection_id,
+      display_name: entry.metadata.display_name ?? entry.row.display_name ?? entry.row.canonical_id,
+      display_order: entry.order,
+      family: entry.metadata.family ?? entry.row.family ?? entry.collection_id,
+      model_reference: { path: `derived-assets/${options.releaseVersion}/${modelHash}.json`, sha256: modelHash },
+      release_status: "imported",
+      release_tier: "full_p0",
+      required_dynamic_fields: dynamicKeys(entry.metadata, entry.row),
+      resource_class: entry.metadata.resource_class ?? entry.row.resource_class ?? "declarative",
+      resource_version: metadataSha,
+      test_batch_ids: [],
+      validation_status: "metadata_validated",
+    };
+    if (entry.metadata.default_text !== undefined || entry.row.default_text !== undefined) item.default_text = entry.metadata.default_text ?? entry.row.default_text ?? "";
+    if (defaultFont) item.default_font_reference = relativeReference(defaultFont, "default font");
+    if (preview) item.preview_reference = relativeReference(preview, "preview");
+    if (typeof runtime.stable_style_id === "string") item.renderer_id = runtime.stable_style_id;
+    return item;
+  }).sort((left, right) => String(left.canonical_id).localeCompare(String(right.canonical_id)));
+  const inputManifestSha = sha256(readFileSync(manifestPath));
+  const after = tracker.after();
+  const sourceMutations = after.mutations;
+  const report: AssetCompilerReport = {
+    copied_source_files: 0,
+    derived_files: derivedStats,
+    executed_source_files: 0,
+    input_manifest_sha256: inputManifestSha,
+    release_version: options.releaseVersion,
+    schema_version: "asset-compiler-report/v1",
+    source_files_read: sourceBefore.length,
+    source_mutations: sourceMutations,
+    status: "passed",
+  };
+  const releaseManifest: JsonObject = { compiler: "dada-asset-compiler", input_manifest_sha256: inputManifestSha, items, release_version: options.releaseVersion, schema_version: "asset-release-compiler/v1" };
+  writeJson(join(outputDirectory, "source-before.json"), { schema_version: "source-snapshot/v1", files: sourceBefore });
+  writeJson(join(outputDirectory, "source-after.json"), { files: after.entries, schema_version: "source-snapshot/v1" });
+  writeJson(join(outputDirectory, "compiler-report.json"), report);
+  writeJson(join(outputDirectory, "output-manifest.json"), releaseManifest);
+  if (sourceMutations > 0) throw new Error("source changed during compilation");
+  return { manifest: releaseManifest, report };
+}
+
+export type { JsonObject };
diff --git a/packages/asset-compiler/tsconfig.json b/packages/asset-compiler/tsconfig.json
new file mode 100644
index 0000000..5bb4903
--- /dev/null
+++ b/packages/asset-compiler/tsconfig.json
@@ -0,0 +1,12 @@
+{
+  "extends": "../../tsconfig.base.json",
+  "compilerOptions": {
+    "module": "NodeNext",
+    "moduleResolution": "NodeNext",
+    "lib": ["ES2024"],
+    "declaration": true,
+    "outDir": "dist",
+    "rootDir": "src"
+  },
+  "include": ["src"]
+}
diff --git a/pnpm-lock.yaml b/pnpm-lock.yaml
index 9f8411b..81a8a58 100644
--- a/pnpm-lock.yaml
+++ b/pnpm-lock.yaml
@@ -126,6 +126,16 @@ importers:
         specifier: 7.0.2
         version: 7.0.2
 
+  packages/asset-compiler:
+    dependencies:
+      csv-parse:
+        specifier: 7.0.2
+        version: 7.0.2
+    devDependencies:
+      typescript:
+        specifier: 7.0.2
+        version: 7.0.2
+
   packages/shared-contracts:
     dependencies:
       '@sinclair/typebox':
@@ -615,6 +625,9 @@ packages:
   csstype@3.2.3:
     resolution: {integrity: sha512-z1HGKcYy2xA8AGQfwrn0PAy+PB7X/GSj3UVJW9qKyn43xWa+gl5nXmU4qqLMRzWVLFC8KusUX8T/0kCiOYpAIQ==}
 
+  csv-parse@7.0.2:
+    resolution: {integrity: sha512-uKZghv9UmPkMVLYy//KZ9HFAIJsl7wkhoEdIL0+rhuSY9pZQlhaeGEDPIe+/w7eh81MOql8Q/9+inAGWG6ZHYA==}
+
   data-urls@5.0.0:
     resolution: {integrity: sha512-ZYP5VBHshaDAiVZxjbRVcFJpc+4xGgT0bK3vzy1HLN8jTO975HEbuYzZJcHoQEY5K1a0z8YayJkyVETa08eNTg==}
     engines: {node: '>=18'}
@@ -1792,6 +1805,8 @@ snapshots:
 
   csstype@3.2.3: {}
 
+  csv-parse@7.0.2: {}
+
   data-urls@5.0.0:
     dependencies:
       whatwg-mimetype: 4.0.0
diff --git a/scripts/frozen-versions.mjs b/scripts/frozen-versions.mjs
index 23f5fc6..8c3b65d 100644
--- a/scripts/frozen-versions.mjs
+++ b/scripts/frozen-versions.mjs
@@ -52,6 +52,14 @@ export const frozenPackages = {
       typescript: "7.0.2",
     },
   },
+  "packages/asset-compiler/package.json": {
+    dependencies: {
+      "csv-parse": "7.0.2",
+    },
+    devDependencies: {
+      typescript: "7.0.2",
+    },
+  },
 };
 
 export const frozenRuntime = {
diff --git a/scripts/run-wp5-01-validation.mjs b/scripts/run-wp5-01-validation.mjs
new file mode 100644
index 0000000..c4c567e
--- /dev/null
+++ b/scripts/run-wp5-01-validation.mjs
@@ -0,0 +1,65 @@
+import { createHash } from "node:crypto";
+import { spawnSync } from "node:child_process";
+import { existsSync, mkdirSync, readFileSync, writeFileSync } from "node:fs";
+import { resolve } from "node:path";
+
+const phaseIndex = process.argv.indexOf("--phase");
+const phase = phaseIndex >= 0 ? process.argv[phaseIndex + 1] : "green";
+const manualReviewed = process.argv.includes("--manual-reviewed");
+if (!["red", "green"].includes(phase)) throw new Error(`Unsupported phase: ${phase}`);
+const runId = process.env.DADA_TDD_RUN_ID ?? `wp5-01-${phase}-${new Date().toISOString().replace(/[^0-9]/g, "")}`;
+const runDirectory = resolve("artifacts", "tdd", runId);
+const caseDirectory = resolve(runDirectory, "cases", "TDD-WP5-MAN-001-readonly-compiler");
+if (existsSync(runDirectory)) throw new Error(`Evidence run already exists: ${runId}`);
+mkdirSync(caseDirectory, { recursive: true });
+
+const environment = { ...process.env, DADA_EVIDENCE_DIR_ASSET_COMPILER: caseDirectory };
+const commands = phase === "red" ? [] : [
+  ["unit", "pnpm test:unit"],
+  ["security", "pnpm test:security"],
+  ["package", "pnpm test:package"],
+  ["tdd-trace", "pnpm validate:tdd-trace"],
+];
+const commandResults = [];
+for (const [name, command] of commands) {
+  const started_at = new Date().toISOString();
+  const result = spawnSync(process.env.ComSpec ?? "cmd.exe", ["/d", "/s", "/c", command], { encoding: "utf8", env: environment });
+  if (result.stdout) process.stdout.write(result.stdout);
+  if (result.stderr) process.stderr.write(result.stderr);
+  commandResults.push({ command, exit_code: result.status ?? 1, finished_at: new Date().toISOString(), name, started_at });
+}
+
+if (phase === "red") {
+  writeFileSync(resolve(caseDirectory, "red-observation.json"), `${JSON.stringify({
+    expected_failure: "asset compiler entry and readonly conversion boundary are not implemented",
+    observed_command: "pnpm vitest run tests/unit/wp5-01-asset-compiler.test.ts",
+    observed_error: "Cannot find module packages/asset-compiler/src/index.js",
+    status: "red_confirmed",
+  }, null, 2)}\n`);
+}
+
+const automaticEvidence = ["compiler-report.json", "source-before.json", "source-after.json", "output-manifest.json"];
+const missing = phase === "red" ? [] : automaticEvidence.filter((file) => !existsSync(resolve(caseDirectory, file)));
+const commandState = phase === "red" || commandResults.every((result) => result.exit_code === 0);
+const status = phase === "red"
+  ? commandState && missing.length === 0 ? "red_confirmed" : "failed"
+  : !commandState || missing.length > 0 ? "failed" : manualReviewed ? "passed" : "awaiting_manual_review";
+const manualReview = manualReviewed
+  ? { checks: ["source directories and source mtimes remain unchanged", "output manifest contains only declarative JSON and no source binary copies", "Lua/Prefab are represented only as non-executed conversion references"], reviewer: "user_confirmation", status: "passed" }
+  : { checks: ["source directories and source mtimes remain unchanged", "output manifest contains only declarative JSON and no source binary copies", "Lua/Prefab are represented only as non-executed conversion references"], reviewer: "human_required", status: "pending" };
+writeFileSync(resolve(caseDirectory, "manual-review.json"), `${JSON.stringify(manualReview, null, 2)}\n`);
+const manifest = { path: "tasks.manifest.json", sha256: createHash("sha256").update(readFileSync("tasks.manifest.json")).digest("hex").toUpperCase() };
+const commit = spawnSync("git", ["rev-parse", "--short", "HEAD"], { encoding: "utf8" }).stdout.trim();
+const dirty = spawnSync("git", ["status", "--porcelain"], { encoding: "utf8" }).stdout.trim().length > 0;
+const evidenceRefs = [...automaticEvidence, "manual-review.json"];
+writeFileSync(resolve(caseDirectory, "commands.json"), `${JSON.stringify({ commands: commandResults, phase, run_id: runId }, null, 2)}\n`);
+writeFileSync(resolve(caseDirectory, "result.json"), `${JSON.stringify({
+  acceptance_criteria: ["AC-32", "AC-42"], automation: ["automated", "manual_review"], commit, evidence_refs: evidenceRefs,
+  layer: ["UNIT", "PKG-SEC", "MANUAL"], manifest, missing_evidence: missing, phase, requirements: ["COL-01", "COL-02", "COL-03", "COL-04", "COL-05", "DYN-01", "DYN-02", "DYN-03", "DYN-04", "DYN-05", "DYN-06", "DYN-07", "DYN-08", "DYN-09", "STATIC-01", "STATIC-02", "STATIC-03", "STATIC-04", "TEXT-01", "TEXT-02", "TEXT-03", "TEXT-04", "TEXT-05", "TEXT-06", "TEXT-07", "TEXT-08", "TEXT-09", "TEXT-10", "TEXT-11", "TEXT-12", "TEXT-13", "TEXT-14"],
+  run_id: runId, status, task_id: "TASK-WP5-01", test_id: "TDD-WP5-MAN-001-readonly-compiler", work_package: "WP-5",
+  worktree_under_test: dirty ? "uncommitted implementation" : "clean committed implementation",
+}, null, 2)}\n`);
+writeFileSync(resolve(runDirectory, "commands.json"), `${JSON.stringify({ commands: commandResults, phase, run_id: runId }, null, 2)}\n`);
+writeFileSync(resolve(runDirectory, "evidence.json"), `${JSON.stringify({ cases: [{ missing_evidence: missing, status, test_id: "TDD-WP5-MAN-001-readonly-compiler" }], phase, run_id: runId, status }, null, 2)}\n`);
+console.log(JSON.stringify({ cases: [{ missing_evidence: missing, status, test_id: "TDD-WP5-MAN-001-readonly-compiler" }], phase, run_id: runId, status }, null, 2));
+if (status === "failed") process.exit(1);
diff --git a/tests/unit/wp5-01-asset-compiler.test.ts b/tests/unit/wp5-01-asset-compiler.test.ts
new file mode 100644
index 0000000..41acb8e
--- /dev/null
+++ b/tests/unit/wp5-01-asset-compiler.test.ts
@@ -0,0 +1,205 @@
+import { createHash } from "node:crypto";
+import {
+  copyFileSync,
+  existsSync,
+  mkdirSync,
+  mkdtempSync,
+  readFileSync,
+  readdirSync,
+  rmSync,
+  statSync,
+  writeFileSync,
+} from "node:fs";
+import { tmpdir } from "node:os";
+import { basename, dirname, join, relative, resolve } from "node:path";
+
+import { afterEach, describe, expect, it } from "vitest";
+
+import { compileAssetArchive } from "../../packages/asset-compiler/src/index.js";
+
+const temporaryRoots: string[] = [];
+
+afterEach(() => {
+  for (const root of temporaryRoots.splice(0)) rmSync(root, { force: true, recursive: true });
+});
+
+function json(path: string, value: unknown) {
+  mkdirSync(dirname(path), { recursive: true });
+  writeFileSync(path, `${JSON.stringify(value, null, 2)}\n`);
+}
+
+function csv(path: string, rows: Array<Record<string, string>>) {
+  const headers = [...new Set(rows.flatMap((row) => Object.keys(row)))];
+  const encode = (value: string) => `"${value.replaceAll('"', '""')}"`;
+  mkdirSync(dirname(path), { recursive: true });
+  writeFileSync(path, `${headers.map(encode).join(",")}\n${rows.map((row) => headers.map((header) => encode(row[header] ?? "")).join(",")).join("\n")}\n`);
+}
+
+function hash(path: string) {
+  return createHash("sha256").update(readFileSync(path)).digest("hex").toUpperCase();
+}
+
+function filesBelow(root: string): string[] {
+  return readdirSync(root, { withFileTypes: true }).flatMap((entry) => {
+    const path = join(root, entry.name);
+    return entry.isDirectory() ? filesBelow(path) : [path];
+  });
+}
+
+function snapshot(roots: string[]) {
+  return roots.flatMap((root) => filesBelow(root).map((path) => {
+    const stats = statSync(path);
+    return { path: `${basename(root)}/${relative(root, path).replaceAll("\\", "/")}`, sha256: hash(path), size: stats.size, mtime_ms: stats.mtimeMs };
+  })).sort((left, right) => left.path.localeCompare(right.path));
+}
+
+interface Fixture {
+  evidenceTrap: string;
+  handoffRoot: string;
+  manifestPath: string;
+  outputRoot: string;
+  root: string;
+  sourceRoot: string;
+}
+
+function createFixture(): Fixture {
+  const root = mkdtempSync(join(tmpdir(), "dada-wp5-01-"));
+  temporaryRoots.push(root);
+  const handoffRoot = join(root, "handoff");
+  const sourceRoot = join(root, "sources");
+  const outputRoot = join(root, "output");
+  const evidenceTrap = join(root, "evidence", "executed.txt");
+  mkdirSync(handoffRoot, { recursive: true });
+  writeFileSync(join(handoffRoot, "HANDOFF.md"), "fixture handoff\n");
+  json(join(handoffRoot, "validation.json"), { all_valid: true, schema_version: 1 });
+
+  const textRoot = join(sourceRoot, "text");
+  csv(join(textRoot, "flower", "catalog.csv"), [{
+    canonical_dir: "templates/FLOWER001", canonical_id: "FLOWER001", category: "flower", default_text: "春日,计划",
+    display_name: "春日,计划", family: "text_template", font_paths: "fonts/original.ztf", preview_path: "preview.png",
+    resource_class: "zip_template",
+  }]);
+  json(join(textRoot, "flower", "templates", "FLOWER001", "metadata.json"), {
+    canonical_id: "FLOWER001", category: "flower", default_text: "春日,计划", display_name: "春日,计划",
+    dynamic_keys: [], family: "text_template",
+    files: { fonts: ["fonts/original.ztf"], layer: "layer.pb", package: "package", preview: "preview.png" },
+    resource_class: "zip_template", runtime: { editable_text: true }, schema_version: 1,
+    source: { archive: join(root, "evidence", "historical") },
+  });
+  writeFileSync(join(textRoot, "unreferenced-source.bin"), Buffer.alloc(128 * 1024, 7));
+
+  const fontRoot = join(sourceRoot, "fonts");
+  const fontDirectory = join(fontRoot, "resources", "font_packages", "FONT001_Test");
+  csv(join(fontRoot, "reports", "font_panel_catalog.csv"), [{
+    candidate_id: "FONT001", display_name: "Test Font", font_family: "Dada Test", local_sha256: "A".repeat(64),
+    panel_order: "1", resource_dir: fontDirectory, resource_status: "verified_extracted",
+  }]);
+  json(join(fontDirectory, "metadata.json"), {
+    candidate_id: "FONT001", display_name: "Test Font", font_family: "Dada Test", font_file_count: 1,
+    local_sha256: "A".repeat(64), panel_order: 1, resource_status: "verified_extracted",
+  });
+
+  const colorRoot = join(sourceRoot, "colors");
+  csv(join(colorRoot, "catalog.csv"), [{
+    canonical_dir: "styles/COLOR001", canonical_id: "COLOR001", category: "color", default_text: "",
+    display_name: "style_01", family: "color_card", preview_path: "preview.png", resource_class: "parameter_renderer",
+  }]);
+  json(join(colorRoot, "styles", "COLOR001", "metadata.json"), {
+    canonical_id: "COLOR001", category: "color", default_text: "", display_name: "style_01", dynamic_keys: [],
+    family: "color_card", files: { preview: "preview.png", renderer_source: "renderer_source.py" },
+    resource_class: "parameter_renderer", runtime: { stable_style_id: "style_01" }, schema_version: 1,
+  });
+
+  const dynamicRoot = join(sourceRoot, "dynamic");
+  csv(join(dynamicRoot, "catalog.csv"), [{
+    canonical_dir: "templates/DYN001", canonical_id: "DYN001", category: "location", default_text: "",
+    display_name: "location", dynamic_keys: "title", family: "interactive_sticker", resource_class: "dynamic_resource",
+  }]);
+  const dynamicDirectory = join(dynamicRoot, "templates", "DYN001");
+  json(join(dynamicDirectory, "metadata.json"), {
+    canonical_id: "DYN001", category: "location", default_text: "", display_name: "location", dynamic_keys: ["title"],
+    family: "interactive_sticker", files: { lua: ["resource/trap.lua"], prefab: ["resource/trap.prefab"] },
+    resource_class: "dynamic_resource", runtime: { has_dynamic_binding: true }, schema_version: 1,
+  });
+  mkdirSync(join(dynamicDirectory, "resource"), { recursive: true });
+  writeFileSync(join(dynamicDirectory, "resource", "trap.lua"), `io.open([[${evidenceTrap}]], "w")`);
+  writeFileSync(join(dynamicDirectory, "resource", "trap.prefab"), "must remain conversion evidence only");
+
+  const manifestPath = join(handoffRoot, "sticker_web_catalog_manifest.json");
+  json(manifestPath, {
+    collections: [
+      { catalogs: { flower: relative(textRoot, join(textRoot, "flower", "catalog.csv")) }, id: "text_templates", root: relative(handoffRoot, textRoot) },
+      { catalog: relative(fontRoot, join(fontRoot, "reports", "font_panel_catalog.csv")), id: "font_panel", root: relative(handoffRoot, fontRoot) },
+      { catalog: "catalog.csv", id: "color_cards", root: relative(handoffRoot, colorRoot) },
+      { catalog: "catalog.csv", id: "interactive_stickers", root: relative(handoffRoot, dynamicRoot) },
+    ],
+    schema_version: 1,
+    validation: "validation.json",
+    web_handoff: "HANDOFF.md",
+  });
+  return { evidenceTrap, handoffRoot, manifestPath, outputRoot, root, sourceRoot };
+}
+
+describe("TDD-WP5-MAN-001 readonly asset compiler", () => {
+  it("produces declarative, redacted, content-addressed output without changing or copying source", () => {
+    const fixture = createFixture();
+    const before = snapshot([fixture.handoffRoot, fixture.sourceRoot]);
+    const result = compileAssetArchive({ manifestPath: fixture.manifestPath, outputDirectory: fixture.outputRoot, releaseVersion: "fixture-v1" });
+    const after = snapshot([fixture.handoffRoot, fixture.sourceRoot]);
+
+    expect(after).toEqual(before);
+    expect(existsSync(fixture.evidenceTrap)).toBe(false);
+    expect(result.report).toMatchObject({ copied_source_files: 0, executed_source_files: 0, source_mutations: 0 });
+
+    const manifestText = readFileSync(join(fixture.outputRoot, "output-manifest.json"), "utf8");
+    const outputManifest = JSON.parse(manifestText) as { items: Array<Record<string, unknown>>; schema_version: string };
+    expect(outputManifest.schema_version).toBe("asset-release-compiler/v1");
+    expect(outputManifest.items.map((item) => item.canonical_id)).toEqual(["COLOR001", "DYN001", "FLOWER001", "FONT001"]);
+    expect(outputManifest.items.every((item) => item.release_status === "imported" && item.validation_status === "metadata_validated")).toBe(true);
+
+    const allOutput = filesBelow(fixture.outputRoot);
+    expect(allOutput.every((path) => path.endsWith(".json"))).toBe(true);
+    expect(allOutput.some((path) => path.endsWith(".lua") || path.endsWith(".prefab") || path.endsWith(".bin"))).toBe(false);
+    const serializedOutput = allOutput.map((path) => readFileSync(path, "utf8")).join("\n");
+    expect(serializedOutput).not.toContain(resolve(fixture.root));
+    expect(serializedOutput).not.toContain("file://");
+    expect(serializedOutput).not.toContain("historical");
+    expect(serializedOutput).not.toContain("unreferenced-source.bin");
+
+    const evidenceDirectory = process.env.DADA_EVIDENCE_DIR_ASSET_COMPILER;
+    if (evidenceDirectory) {
+      mkdirSync(evidenceDirectory, { recursive: true });
+      for (const file of ["compiler-report.json", "source-before.json", "source-after.json", "output-manifest.json"]) {
+        copyFileSync(join(fixture.outputRoot, file), join(evidenceDirectory, file));
+      }
+    }
+  });
+
+  it("is reproducible and reuses existing derived JSON by content hash", () => {
+    const fixture = createFixture();
+    const secondOutput = join(fixture.root, "second-output");
+    compileAssetArchive({ manifestPath: fixture.manifestPath, outputDirectory: fixture.outputRoot, releaseVersion: "fixture-v1" });
+    compileAssetArchive({ manifestPath: fixture.manifestPath, outputDirectory: secondOutput, releaseVersion: "fixture-v1" });
+    expect(readFileSync(join(fixture.outputRoot, "output-manifest.json"), "utf8")).toBe(readFileSync(join(secondOutput, "output-manifest.json"), "utf8"));
+
+    const repeated = compileAssetArchive({ manifestPath: fixture.manifestPath, outputDirectory: fixture.outputRoot, releaseVersion: "fixture-v1" });
+    expect(repeated.report.derived_files).toEqual({ created: 0, reused: 4, total: 4 });
+  });
+
+  it("rejects evidence collections, traversal and output inside a source root", () => {
+    const fixture = createFixture();
+    const manifest = JSON.parse(readFileSync(fixture.manifestPath, "utf8")) as { collections: unknown[] };
+    manifest.collections.push({ catalog: "../evidence/catalog.csv", id: "evidence", root: "../evidence" });
+    json(fixture.manifestPath, manifest);
+    expect(() => compileAssetArchive({ manifestPath: fixture.manifestPath, outputDirectory: fixture.outputRoot, releaseVersion: "fixture-v1" })).toThrow(/unsupported collection/i);
+
+    const clean = createFixture();
+    const catalogPath = join(clean.sourceRoot, "dynamic", "catalog.csv");
+    const row = { canonical_dir: "../../evidence", canonical_id: "DYN001", category: "location", default_text: "", display_name: "location", dynamic_keys: "title", family: "interactive_sticker", resource_class: "dynamic_resource" };
+    csv(catalogPath, [row]);
+    expect(() => compileAssetArchive({ manifestPath: clean.manifestPath, outputDirectory: clean.outputRoot, releaseVersion: "fixture-v1" })).toThrow(/unsafe relative path|outside.*source root/i);
+
+    const nested = createFixture();
+    expect(() => compileAssetArchive({ manifestPath: nested.manifestPath, outputDirectory: join(nested.sourceRoot, "text", "derived"), releaseVersion: "fixture-v1" })).toThrow(/output.*source root/i);
+  });
+});