diff --git a/PUBLISHING.md b/PUBLISHING.md
index 898f169..5c17df4 100644
--- a/PUBLISHING.md
+++ b/PUBLISHING.md
@@ -59,6 +59,6 @@ testing; it is not a user install path (see README).
 
 ## Current release posture
 
-`VERSION` is `0.2.0`, the first stable release on npm (`0.2.0-dev` was the initial prerelease).
+`VERSION` is `0.3.0`, which adds the Knowledge module; `0.2.0` was the first stable release on npm.
 Fresh Claude/Codex/Copilot discovery checks are still to be recorded. Linux is the tested platform. The project is MIT;
 `THIRD_PARTY_NOTICES.md` retains the notices for the skills attributed to Matt Pocock.
diff --git a/README.md b/README.md
index 6207e34..0c761cf 100644
--- a/README.md
+++ b/README.md
@@ -206,7 +206,7 @@ bash agent-workflow-kit/module.sh update --target /path/to/my-project
 
 ## Project status
 
-**Version `0.2.0`, published on npm as [`ants-kit`](https://www.npmjs.com/package/ants-kit).**
+**Version `0.3.0`, published on npm as [`ants-kit`](https://www.npmjs.com/package/ants-kit).**
 
 Local tests, GitHub CI and publication archive checks pass; Linux is the tested platform. Checks in
 fresh Claude Code, Codex, and Copilot sessions are still to be recorded.
diff --git a/VERSION b/VERSION
index 0ea3a94..0d91a54 100644
--- a/VERSION
+++ b/VERSION
@@ -1 +1 @@
-0.2.0
+0.3.0
diff --git a/package.json b/package.json
index 42ae62b..8b14ad5 100644
--- a/package.json
+++ b/package.json
@@ -1,6 +1,6 @@
 {
   "name": "ants-kit",
-  "version": "0.2.0",
+  "version": "0.3.0",
   "description": "Modular task, memory and quality workflow for Claude Code, Codex and Copilot, installed into a single project directory.",
   "license": "MIT",
   "author": "Pierre Dillard",
diff --git a/templates/project/.workflow/runtime/catalog.mjs b/templates/project/.workflow/runtime/catalog.mjs
index 7406ca6..ce20dc6 100644
--- a/templates/project/.workflow/runtime/catalog.mjs
+++ b/templates/project/.workflow/runtime/catalog.mjs
@@ -108,14 +108,15 @@ export function resolveModules(catalog, selected, installed = []) {
   const ordered = [];
   const visiting = new Set();
   const visited = new Set();
-  function visit(moduleId, requiredVersion = '*') {
+  function visit(moduleId, requiredVersion = '*', requiredBy = null) {
     const manifest = known.get(moduleId) ?? catalog.get(moduleId)?.manifest;
-    if (!manifest) throw new Error(`Missing module dependency: ${moduleId}`);
+    if (!manifest && requiredBy) throw new Error(`Missing module dependency: ${moduleId} (required by ${requiredBy})`);
+    if (!manifest) throw new Error(`Unknown module: ${moduleId} (not in the installed modules or available catalogs)`);
     if (!satisfiesVersion(manifest.version, requiredVersion)) throw new Error(`Incompatible version: ${moduleId} requires ${requiredVersion}, found ${manifest.version}`);
     if (visiting.has(moduleId)) throw new Error(`Module dependency cycle: ${moduleId}`);
     if (visited.has(moduleId)) return;
     visiting.add(moduleId);
-    for (const [dependency, version] of Object.entries(manifest.requires ?? {}).sort()) visit(dependency, version);
+    for (const [dependency, version] of Object.entries(manifest.requires ?? {}).sort()) visit(dependency, version, moduleId);
     visiting.delete(moduleId);
     visited.add(moduleId);
     ordered.push(manifest);
diff --git a/tests/modules.test.mjs b/tests/modules.test.mjs
index 3749d8c..e7e2291 100644
--- a/tests/modules.test.mjs
+++ b/tests/modules.test.mjs
@@ -23,7 +23,8 @@ function command(executable, args, expectedSuccess = true, environment = {}) {
 
 function fixture(context, configuration = '') {
   const root = mkdtempSync(join(tmpdir(), 'workflow-module-test-'));
-  context.after(() => rmSync(root, { recursive: true, force: true }));
+  // Retries absorb a Git process still writing in a fixture repository when cleanup starts.
+  context.after(() => rmSync(root, { recursive: true, force: true, maxRetries: 5 }));
   const project = join(root, 'project with spaces');
   const user = join(root, 'user with spaces');
   mkdirSync(project); mkdirSync(user);
@@ -287,7 +288,7 @@ test('module dependencies accept compatible versions of the same major and refus
 });
 
 for (const [label, overrides, expected] of [
-  ['missing dependency', { requires: { missing: '*' } }, /Missing module dependency/],
+  ['missing dependency', { requires: { missing: '*' } }, /Missing module dependency: missing \(required by /],
   ['incompatible dependency', { requires: { memory: '99.0.0' } }, /Incompatible version/],
   ['incompatible dependency major', { requires: { memory: '^99.0.0' } }, /Incompatible version/],
   ['unsupported dependency range', { requires: { memory: '~1.1.0' } }, /Invalid dependency/],
@@ -360,7 +361,7 @@ test('mid-add failure restores files, inventory, shared rules, directories and u
 
 test('unknown selection and invalid configuration leave first install untouched', context => {
   const setup = fixture(context); const before = snapshot(setup.project);
-  assert.match(install(setup, ['--modules', 'unknown'], false), /Missing module dependency/);
+  assert.match(install(setup, ['--modules', 'unknown'], false), /Unknown module: unknown \(not in the installed modules or available catalogs\)/);
   assert.match(install(setup, ['--profile', 'unknown'], false), /Unknown profile/);
   assert.deepEqual(snapshot(setup.project), before);
 });
@@ -458,7 +459,7 @@ function updateFixture(context, extra = [], configuration = '') {
   command('git', ['-C', source, 'init', '-q']);
   command('git', ['-C', source, 'add', '.']);
   command('git', ['-C', source, '-c', 'user.name=Workflow fixture', '-c', 'user.email=fixture@example.invalid',
-    '-c', 'commit.gpgsign=false', 'commit', '-qm', 'Fixture baseline']);
+    '-c', 'commit.gpgsign=false', '-c', 'gc.auto=0', '-c', 'maintenance.auto=false', 'commit', '-qm', 'Fixture baseline']);
   const workflow = join(source, 'core/skills/project-workflow/SKILL.md');
   writeFileSync(workflow, '---\nname: project-workflow\ndescription: Previous fixture router.\n---\n\nPrevious fixture route.\n');
   command('bash', [join(source, 'install.sh'), '--target', setup.project, '--user-root', setup.user,