diff --git a/.github/workflows/ci.yml b/.github/workflows/ci.yml
index 70e9728..3d8540a 100644
--- a/.github/workflows/ci.yml
+++ b/.github/workflows/ci.yml
@@ -39,7 +39,9 @@ jobs:
           test -d memory-bank
 
       - name: Validate priming manifests
-        run: ruby tools/validate-priming-manifests.rb template/memory-bank
+        run: |
+          ruby tools/validate-priming-manifests-test.rb
+          ruby tools/validate-priming-manifests.rb template/memory-bank
 
       - name: Lint template
         run: memory-bank-cli lint --scope-root template/memory-bank --entrypoint template/memory-bank/README.md
diff --git a/docs/development.md b/docs/development.md
index 2540ae6..e3a7aca 100644
--- a/docs/development.md
+++ b/docs/development.md
@@ -10,6 +10,7 @@
 
 ```bash
 rg --files template/memory-bank
+ruby tools/validate-priming-manifests-test.rb
 ruby tools/validate-priming-manifests.rb template/memory-bank
 memory-bank-cli lint --scope-root template/memory-bank --entrypoint template/memory-bank/README.md
 memory-bank-cli doctor --profile template
diff --git a/template/memory-bank/flows/templates/feature/implementation-plan.md b/template/memory-bank/flows/templates/feature/implementation-plan.md
index da7c566..4a66028 100644
--- a/template/memory-bank/flows/templates/feature/implementation-plan.md
+++ b/template/memory-bank/flows/templates/feature/implementation-plan.md
@@ -89,12 +89,19 @@ Grounding выполняется до sequencing против конкретно
 Перед первым write implementing agent читает только этот manifest и проверяет,
 что рабочая tree начинается с grounded repository revision выше. Это
 исполняемая инструкция, а не пересказ `GRND-*` facts: перечисляй concrete
-repo-relative paths или stable external sources в порядке чтения. Category,
-glob, `TODO`, предполагаемый path и «изучи релевантное» не допускаются.
+repo-relative paths или stable external sources в порядке чтения. Для каждого
+input укажи точную section/symbol, подтверждающий `GRND-*`, цель чтения и
+`STEP-*`, до которого input обязателен. Category, glob, `TODO`, предполагаемый
+path, unresolved placeholder и «изучи релевантное» не допускаются.
 
-1. `memory-bank/domain/<rule>.md`
-2. `path/to/existing/module`
-3. `path/to/existing/tests`
+| Order | Exact path / stable source | Section / symbol | Grounding refs | Purpose | Required before |
+| --- | --- | --- | --- | --- | --- |
+| `1` | `memory-bank/domain/example-rule.md` | `# Example Rule` | `GRND-01` | Подтвердить применимое domain rule | `STEP-01` |
+| `2` | `path/to/existing/module` | `ExistingService` | `GRND-01` | Подтвердить текущий implementation pattern | `STEP-01` |
+| `3` | `path/to/existing/tests` | `ExistingServiceTest` | `GRND-02` | Подтвердить test conventions и regression surface | `STEP-02` |
+
+Замени все example rows фактическими inputs плана. Один input может ссылаться
+на несколько `GRND-*` и `STEP-*`; перечисли их явно.
 
 Перед первым write выполни `git rev-parse HEAD` и сравни с grounded immutable
 revision. Если revision расходится или один из перечисленных inputs недоступен,
diff --git a/tools/validate-priming-manifests-test.rb b/tools/validate-priming-manifests-test.rb
new file mode 100644
index 0000000..a614f05
--- /dev/null
+++ b/tools/validate-priming-manifests-test.rb
@@ -0,0 +1,40 @@
+# frozen_string_literal: true
+
+require "fileutils"
+require "minitest/autorun"
+require "pathname"
+require "tmpdir"
+require "yaml"
+
+require_relative "validate-priming-manifests"
+
+class PrimingManifestValidatorTest < Minitest::Test
+  def test_rejects_absolute_remainder_that_points_outside_scope
+    Dir.mktmpdir do |directory|
+      root = Pathname(directory)
+      scope_root = root.join("memory-bank")
+      manifest_directory = scope_root.join("flows/priming")
+      FileUtils.mkdir_p(manifest_directory)
+
+      outside_file = root.join("outside.md")
+      outside_file.write("outside scope")
+      manifest_directory.join("sample.yaml").write(
+        {
+          "version" => 1,
+          "process" => "sample",
+          "stages" => {
+            "entry" => ["memory-bank/#{outside_file}"]
+          }
+        }.to_yaml
+      )
+
+      result = nil
+      _stdout, stderr = capture_io do
+        result = PrimingManifestValidator.new(scope_root).run
+      end
+
+      refute result
+      assert_includes stderr, "must remain relative under memory-bank/"
+    end
+  end
+end
diff --git a/tools/validate-priming-manifests.rb b/tools/validate-priming-manifests.rb
index 57afe60..17f43b3 100644
--- a/tools/validate-priming-manifests.rb
+++ b/tools/validate-priming-manifests.rb
@@ -114,7 +114,13 @@ def validate_input(path, stage, input, template:)
     end
 
     relative = input.delete_prefix("memory-bank/")
-    if Pathname(relative).each_filename.include?("..")
+    relative_path = Pathname(relative)
+    if relative_path.absolute?
+      add_error(path, "stage #{stage.inspect}: #{input.inspect} must remain relative under memory-bank/")
+      return
+    end
+
+    if relative_path.each_filename.include?("..")
       add_error(path, "stage #{stage.inspect}: #{input.inspect} escapes the scope root")
       return
     end
@@ -169,5 +175,7 @@ def finish
   end
 end
 
-scope_root = ARGV.fetch(0, "template/memory-bank")
-exit 1 unless PrimingManifestValidator.new(scope_root).run
+if $PROGRAM_NAME == __FILE__
+  scope_root = ARGV.fetch(0, "template/memory-bank")
+  exit 1 unless PrimingManifestValidator.new(scope_root).run
+end