chore(project-map): regenerate .pi-map artifacts across the repo

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

@@ -1,27 +1,13 @@
-# .
-dir: .
+# openspec/changes/archive
+dir: openspec/changes/archive
 
-index: ./.pi-map.index.md
-
-## 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.
+index: openspec/changes/archive/.pi-map.index.md
 
 ## role
-This is an empty package directory with no files to analyze.
+Provides historical record and backward compatibility for schema changes that have been archived or superseded.
 ## files
 ## arch
-N/A - no code or architecture patterns present
+Immutable archive pattern with versioned change records, likely using append-only storage for audit trails and rollback support.
 ## tags
 -
 ## symbols