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/components/features/ssh-keys/.pi-map.index.md

@@ -0,0 +1,21 @@
+# apps/web/src/components/features/ssh-keys (index)
+dir: apps/web/src/components/features/ssh-keys
+
+## role
+Provides UI components for SSH key lifecycle management including creation and list operations with cryptographic signing/verification features.
+## parent
+index: apps/web/src/components/features/.pi-map.index.md
+map: apps/web/src/components/features/.pi-map.md
+## children
+-
+## files
+- SSHKeyCreateForm.tsx
+- SSHKeyList.tsx
+## links
+index: apps/web/src/components/features/ssh-keys/.pi-map.index.md
+map: apps/web/src/components/features/ssh-keys/.pi-map.md
+## workflows
+- change ssh-keys behavior
+  read: SSHKeyCreateForm.tsx, SSHKeyList.tsx
+## dirty
+-