chore(template): clean-slate template snapshot from bb4a0c7

Curated, product-agnostic snapshot of the post-story-04 tree: demo
content deleted, auth-only reference feature, web-next shell, all gates
green. Product-specific docs, ADRs 027-029, PRDs/epics/archive, editor
library traces, and product naming are curated out; generic template
repairs (coverage provider devDeps, root test:coverage script, live
lint fixes, root-only release-please) are kept. See TEMPLATE.md for
provenance, curation list, and usage.

Co-Authored-By: Claude Fable 5 <noreply@anthropic.com>
Claude-Session: https://claude.ai/code/session_016j8z4VHjedXDTjEDNg7qHK

packages/core-eslint/rules/no-undeclared-event-publish.js

@@ -0,0 +1,87 @@
+import { parseManifestUseCases } from "./_manifest-ast.js";
+import { manifestPathForFeature } from "./_manifest-source.js";
+import { repoRootSchema } from "./_rule-schema.js";
+import { resolveRuleContext } from "./_rule-context.js";
+import { eventNameFromFile, resolveRelativeImport } from "./_event-ast.js";
+
+/** @type {import("eslint").Rule.RuleModule} */
+export default {
+  meta: {
+    type: "problem",
+    docs: {
+      description:
+        "bus.publish(event) inside a use-case factory must declare the event in manifest.useCases[name].publishes. Resolves both a string-literal event name and an imported event descriptor (defineEvent(...) or an inline { name } object).",
+    },
+    schema: repoRootSchema,
+    messages: {
+      undeclared:
+        '{{useCase}} publishes "{{event}}" via bus.publish but {{event}} is not declared in manifest.useCases.{{useCase}}.publishes. Add it to the manifest or remove the call.',
+    },
+  },
+  create(context) {
+    const rc = resolveRuleContext(context);
+    if (!rc) return {};
+    const { useCaseName, featureRoot } = rc;
+    const manifest = parseManifestUseCases(manifestPathForFeature(featureRoot));
+    if (!manifest || !manifest[useCaseName]) return {};
+    const declared = new Set(manifest[useCaseName].publishes);
+
+    // Local import name -> import source string. Populated as `ImportDeclaration`
+    // nodes are visited; imports always precede the use-case body, so the map
+    // is complete by the time a `bus.publish` call is reached.
+    const importSources = new Map();
+
+    /**
+     * Resolve a `bus.publish()` first argument to its event name. Returns null
+     * when the argument can't be statically analysed — an unresolvable case is
+     * skipped rather than reported, so the rule never false-positives.
+     */
+    function eventNameFor(arg) {
+      if (arg.type === "Literal" && typeof arg.value === "string") {
+        return arg.value;
+      }
+      if (arg.type === "Identifier") {
+        const source = importSources.get(arg.name);
+        if (!source) return null;
+        const file = resolveRelativeImport(source, context.filename);
+        if (!file) return null;
+        return eventNameFromFile(file, arg.name);
+      }
+      return null;
+    }
+
+    return {
+      ImportDeclaration(node) {
+        const source = node.source.value;
+        for (const spec of node.specifiers) {
+          if (
+            spec.type === "ImportSpecifier" ||
+            spec.type === "ImportDefaultSpecifier"
+          ) {
+            importSources.set(spec.local.name, source);
+          }
+        }
+      },
+      CallExpression(node) {
+        if (
+          node.callee.type === "MemberExpression" &&
+          node.callee.object.type === "Identifier" &&
+          node.callee.object.name === "bus" &&
+          node.callee.property.type === "Identifier" &&
+          node.callee.property.name === "publish" &&
+          node.arguments.length > 0
+        ) {
+          const event = eventNameFor(node.arguments[0]);
+          if (event === null) return;
+          if (!declared.has(event)) {
+            context.report({
+              node,
+              messageId: "undeclared",
+              data: { event, useCase: useCaseName },
+            });
+          }
+        }
+      },
+    };
+  },
+};