chore: archive 15 completed OpenSpec changes

Move the following audited-and-implemented changes into
openspec/changes/archive/2026-06-12-completed-changes-archive/:

- backend-frontend-refactoring
- config-profile-git-mounts
- config-profile-includes-ui
- config-profile-multi-repo-mounts
- container-monitoring-notifications
- git-mount-url-validation
- home-path-expansion
- mobile-terminal-ux
- mount-specificity-ordering
- notification-center
- persistent-terminal-sessions
- session-list-overhaul
- ssh-key-mounting
- terminal-fullscreen-unified-header
- tool-session-progress-and-updates

Also regenerated .pi-map*.md files for openspec/changes so the
remaining active changes (multi-session-terminal-ux, reorganize-long-files,
working-copies, workspace-first-ui) reflect the new layout.

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

@@ -1,73 +1,44 @@
-# openspec/changes (index)
-dir: openspec/changes
+# . (index)
+dir: .
+
+## Project Map Protocol
+
+1. Read this protocol and the root `.pi-map.index.md` first.
+2. Use `index:` / `map:` references to open relevant directory indexes and maps.
+3. Load indexes before rich maps during task-start navigation.
+4. Read the local rich map and actual source before editing.
+5. Treat non-empty `## dirty` sections in either artifact as stale.
+6. If source and generated artifacts disagree, trust source.
+7. If map and index disagree, trust neither blindly; verify from source and regenerate the pair.
+8. After editing source, run `project_map_patch` for each changed file.
+9. Before broad architectural claims or final handoff, run `project_map_validate` when freshness matters.
+
+Trust boundary: index routes, map orients, source decides.
 
 ## role
-Implements a version control and change tracking system for managing schema evolution and data migrations in the OpenSpec framework.
+Empty root directory awaiting package initialization or content.
 ## 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
+- archive
+  index: archive/.pi-map.index.md
+  map: archive/.pi-map.md
+- multi-session-terminal-ux
+  index: multi-session-terminal-ux/.pi-map.index.md
+  map: multi-session-terminal-ux/.pi-map.md
+- reorganize-long-files
+  index: reorganize-long-files/.pi-map.index.md
+  map: reorganize-long-files/.pi-map.md
+- working-copies
+  index: working-copies/.pi-map.index.md
+  map: working-copies/.pi-map.md
+- workspace-first-ui
+  index: workspace-first-ui/.pi-map.index.md
+  map: workspace-first-ui/.pi-map.md
 ## files
 ## links
-index: openspec/changes/.pi-map.index.md
-map: openspec/changes/.pi-map.md
+index: ./.pi-map.index.md
+map: ./.pi-map.md
 ## workflows
 -
 ## dirty