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).

e2e/tests/.pi-map.index.md

@@ -0,0 +1,20 @@
+# e2e/tests (index)
+dir: e2e/tests
+
+## role
+End-to-end test suite for authentication flows using Playwright
+## parent
+index: e2e/.pi-map.index.md
+map: e2e/.pi-map.md
+## children
+-
+## files
+- login.spec.ts
+## links
+index: e2e/tests/.pi-map.index.md
+map: e2e/tests/.pi-map.md
+## workflows
+- update tests tests
+  read: login.spec.ts
+## dirty
+-

e2e/tests/.pi-map.md

@@ -0,0 +1,20 @@
+# e2e/tests
+dir: e2e/tests
+
+index: e2e/tests/.pi-map.index.md
+
+## role
+End-to-end test suite for authentication flows using Playwright
+## files
+- login.spec.ts | End-to-end tests for authentication flow using Playwright, verifying login page accessibility, OAuth redirect behavior, and protected route enforcement. | dep: @playwright/test
+## arch
+Specification-style testing with Playwright page object model, covering OAuth redirect flows and route protection guards
+## tags
+end, login.spec, tests, authentication, flow, playwright, verifying, login
+## symbols
+-
+## workflows
+- update tests tests
+  read: login.spec.ts
+## dirty
+-