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/specs/tool-instances/.pi-map.md

@@ -0,0 +1,19 @@
+# openspec/specs/tool-instances
+dir: openspec/specs/tool-instances
+
+index: openspec/specs/tool-instances/.pi-map.index.md
+
+## role
+Defines requirements for managing tool instances with health monitoring, tunnel connectivity, clone mode, and SSH key operations.
+## files
+- spec.md | Define modified and added requirements for a tool instance management system including status monitoring, health checks, tunnel management, clone mode operations, and SSH key handling
+## arch
+Specification-driven requirements document using structured markdown with sections for status, health checks, tunnels, clone mode, and SSH keys.
+## tags
+management, spec, define, modified, added, requirements, tool, instance
+## symbols
+-
+## workflows
+-
+## dirty
+-