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).

openspec/changes/.pi-map.index.md

@@ -0,0 +1,74 @@
+# openspec/changes (index)
+dir: openspec/changes
+
+## role
+Implements a version control and change tracking system for managing schema evolution and data migrations in the OpenSpec framework.
+## parent
+index: openspec/.pi-map.index.md
+map: openspec/.pi-map.md
+## children
+- openspec/changes/archive
+  index: openspec/changes/archive/.pi-map.index.md
+  map: openspec/changes/archive/.pi-map.md
+- openspec/changes/backend-frontend-refactoring
+  index: openspec/changes/backend-frontend-refactoring/.pi-map.index.md
+  map: openspec/changes/backend-frontend-refactoring/.pi-map.md
+- openspec/changes/config-profile-git-mounts
+  index: openspec/changes/config-profile-git-mounts/.pi-map.index.md
+  map: openspec/changes/config-profile-git-mounts/.pi-map.md
+- openspec/changes/config-profile-includes-ui
+  index: openspec/changes/config-profile-includes-ui/.pi-map.index.md
+  map: openspec/changes/config-profile-includes-ui/.pi-map.md
+- openspec/changes/config-profile-multi-repo-mounts
+  index: openspec/changes/config-profile-multi-repo-mounts/.pi-map.index.md
+  map: openspec/changes/config-profile-multi-repo-mounts/.pi-map.md
+- openspec/changes/container-monitoring-notifications
+  index: openspec/changes/container-monitoring-notifications/.pi-map.index.md
+  map: openspec/changes/container-monitoring-notifications/.pi-map.md
+- openspec/changes/git-mount-url-validation
+  index: openspec/changes/git-mount-url-validation/.pi-map.index.md
+  map: openspec/changes/git-mount-url-validation/.pi-map.md
+- openspec/changes/home-path-expansion
+  index: openspec/changes/home-path-expansion/.pi-map.index.md
+  map: openspec/changes/home-path-expansion/.pi-map.md
+- openspec/changes/mobile-terminal-ux
+  index: openspec/changes/mobile-terminal-ux/.pi-map.index.md
+  map: openspec/changes/mobile-terminal-ux/.pi-map.md
+- openspec/changes/mount-specificity-ordering
+  index: openspec/changes/mount-specificity-ordering/.pi-map.index.md
+  map: openspec/changes/mount-specificity-ordering/.pi-map.md
+- openspec/changes/multi-session-terminal-ux
+  index: openspec/changes/multi-session-terminal-ux/.pi-map.index.md
+  map: openspec/changes/multi-session-terminal-ux/.pi-map.md
+- openspec/changes/notification-center
+  index: openspec/changes/notification-center/.pi-map.index.md
+  map: openspec/changes/notification-center/.pi-map.md
+- openspec/changes/persistent-terminal-sessions
+  index: openspec/changes/persistent-terminal-sessions/.pi-map.index.md
+  map: openspec/changes/persistent-terminal-sessions/.pi-map.md
+- openspec/changes/reorganize-long-files
+  index: openspec/changes/reorganize-long-files/.pi-map.index.md
+  map: openspec/changes/reorganize-long-files/.pi-map.md
+- openspec/changes/session-list-overhaul
+  index: openspec/changes/session-list-overhaul/.pi-map.index.md
+  map: openspec/changes/session-list-overhaul/.pi-map.md
+- openspec/changes/ssh-key-mounting
+  index: openspec/changes/ssh-key-mounting/.pi-map.index.md
+  map: openspec/changes/ssh-key-mounting/.pi-map.md
+- openspec/changes/terminal-fullscreen-unified-header
+  index: openspec/changes/terminal-fullscreen-unified-header/.pi-map.index.md
+  map: openspec/changes/terminal-fullscreen-unified-header/.pi-map.md
+- openspec/changes/working-copies
+  index: openspec/changes/working-copies/.pi-map.index.md
+  map: openspec/changes/working-copies/.pi-map.md
+- openspec/changes/workspace-first-ui
+  index: openspec/changes/workspace-first-ui/.pi-map.index.md
+  map: openspec/changes/workspace-first-ui/.pi-map.md
+## files
+## links
+index: openspec/changes/.pi-map.index.md
+map: openspec/changes/.pi-map.md
+## workflows
+-
+## dirty
+-