chore: track all project map and index files

Add generated .pi-map.md and .pi-map.index.md files across the repository
so the project navigation maps are shared and versioned. These artifacts
are maintained by project_map_init/patch/validate and must be kept in
sync with source edits.

Note: .cache/ remains ignored (added in previous commit).

apps/web/src/test/.pi-map.index.md

@@ -0,0 +1,20 @@
+# apps/web/src/test (index)
+dir: apps/web/src/test
+
+## role
+Provides shared testing infrastructure and configuration for the web application's test suite
+## parent
+index: apps/web/src/.pi-map.index.md
+map: apps/web/src/.pi-map.md
+## children
+-
+## files
+- setup.ts
+## links
+index: apps/web/src/test/.pi-map.index.md
+map: apps/web/src/test/.pi-map.md
+## workflows
+- change test behavior
+  read: setup.ts
+## dirty
+-

apps/web/src/test/.pi-map.md

@@ -0,0 +1,20 @@
+# apps/web/src/test
+dir: apps/web/src/test
+
+index: apps/web/src/test/.pi-map.index.md
+
+## role
+Provides shared testing infrastructure and configuration for the web application's test suite
+## files
+- setup.ts | Configures Vitest testing environment with Jest DOM matchers for enhanced DOM assertions | dep: @testing-library/jest-dom/vitest
+## arch
+Minimal utility module pattern - single configuration file exporting Vitest setup with Jest DOM matchers integration
+## tags
+dom, vitest, jest, setup, configures, testing, environment, matchers
+## symbols
+-
+## workflows
+- change test behavior
+  read: setup.ts
+## dirty
+-