chore: archive completed OpenSpec changes

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

- tool-config-mount-cleanup
- config-profile-directory-mounts

Update archive README count and project map index/files accordingly.
openspec/changes/ now contains only the archive directory.

Quality gates: pytest 313 passed/34 skipped, npm run typecheck/lint clean,
npm test -- --run 87 passed

openspec/changes/archive/2026-06-12-completed-changes-archive/.pi-map.index.md

@@ -19,6 +19,9 @@ map: archive/.pi-map.md
 - archive/2026-06-12-completed-changes-archive/config-profile-multi-repo-mounts
   index: archive/2026-06-12-completed-changes-archive/config-profile-multi-repo-mounts/.pi-map.index.md
   map: archive/2026-06-12-completed-changes-archive/config-profile-multi-repo-mounts/.pi-map.md
+- archive/2026-06-12-completed-changes-archive/config-profile-directory-mounts
+  index: archive/2026-06-12-completed-changes-archive/config-profile-directory-mounts/.pi-map.index.md
+  map: archive/2026-06-12-completed-changes-archive/config-profile-directory-mounts/.pi-map.md
 - archive/2026-06-12-completed-changes-archive/container-monitoring-notifications
   index: archive/2026-06-12-completed-changes-archive/container-monitoring-notifications/.pi-map.index.md
   map: archive/2026-06-12-completed-changes-archive/container-monitoring-notifications/.pi-map.md
@@ -49,6 +52,9 @@ map: archive/.pi-map.md
 - archive/2026-06-12-completed-changes-archive/terminal-fullscreen-unified-header
   index: archive/2026-06-12-completed-changes-archive/terminal-fullscreen-unified-header/.pi-map.index.md
   map: archive/2026-06-12-completed-changes-archive/terminal-fullscreen-unified-header/.pi-map.md
+- archive/2026-06-12-completed-changes-archive/tool-config-mount-cleanup
+  index: archive/2026-06-12-completed-changes-archive/tool-config-mount-cleanup/.pi-map.index.md
+  map: archive/2026-06-12-completed-changes-archive/tool-config-mount-cleanup/.pi-map.md
 - archive/2026-06-12-completed-changes-archive/tool-session-progress-and-updates
   index: archive/2026-06-12-completed-changes-archive/tool-session-progress-and-updates/.pi-map.index.md
   map: archive/2026-06-12-completed-changes-archive/tool-session-progress-and-updates/.pi-map.md

openspec/changes/archive/2026-06-12-completed-changes-archive/.pi-map.md

@@ -7,8 +7,10 @@ index: archive/2026-06-12-completed-changes-archive/.pi-map.index.md
 Stores historical records of fully implemented and audited OpenSpec changes for reference and audit trail purposes.
 ## files
 - README.md | Documents archived completed OpenSpec changes that have been audited and confirmed as fully implemented
+- config-profile-directory-mounts | Completed OpenSpec change for directory-level config profile mounts
 - multi-session-terminal-ux | Completed OpenSpec change for multi-session terminal UX
 - reorganize-long-files | Completed OpenSpec change for reorganizing long files
+- tool-config-mount-cleanup | Completed OpenSpec change for cleaning up built-in tool config/state mounts
 - working-copies | Completed OpenSpec change for workspace-first working copies
 - workspace-first-ui | Completed OpenSpec change for workspace-first UI
 ## arch

openspec/changes/archive/2026-06-12-completed-changes-archive/README.md

@@ -8,6 +8,7 @@ These OpenSpec changes have been audited against the current source tree and con
 - config-profile-git-mounts
 - config-profile-includes-ui
 - config-profile-multi-repo-mounts
+- config-profile-directory-mounts
 - container-monitoring-notifications
 - git-mount-url-validation
 - home-path-expansion
@@ -18,13 +19,14 @@ These OpenSpec changes have been audited against the current source tree and con
 - session-list-overhaul
 - ssh-key-mounting
 - terminal-fullscreen-unified-header
+- tool-config-mount-cleanup
 - tool-session-progress-and-updates
 
 ## Audit summary
 
 | Status | Count |
 |--------|-------|
-| Fully implemented | 15 |
+| Fully implemented | 17 |
 | Partially implemented | 0 (in this archive) |
 
 Audit report: `/tmp/active-changes-implementation-audit.md` (generated before archiving).