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/archive/2026-05-22-ui-redesign-home-settings/.pi-map.md

@@ -0,0 +1,22 @@
+# openspec/changes/archive/2026-05-22-ui-redesign-home-settings
+dir: openspec/changes/archive/2026-05-22-ui-redesign-home-settings
+
+index: openspec/changes/archive/2026-05-22-ui-redesign-home-settings/.pi-map.index.md
+
+## role
+Preserves historical design documents and planning artifacts for a May 2026 UI redesign focused on consolidating navigation around a Home overview and tabbed Settings hub.
+## files
+- .openspec.yaml | Defines an OpenSpec configuration file with schema type and creation date metadata
+- design.md | Design specification document for a UI redesign covering information architecture, page layouts, visual direction, routing, and component strategy.
+- proposal.md | Proposes a UI redesign to consolidate the authenticated frontend around a Home overview and a tabbed Settings hub while keeping existing functionality and APIs unchanged.
+- tasks.md | Task checklist tracking completed work for a UI redesign project involving navigation restructuring, home page redesign, and settings hub reorganization
+## arch
+Simple archival directory structure using date-prefixed naming convention with standard markdown documentation (design spec, proposal, task tracking) and YAML metadata for change record identification.
+## tags
+redesign, design, .openspec, page, home, settings, hub, proposal
+## symbols
+-
+## workflows
+-
+## dirty
+-