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).

apps/web/src/components/features/workspace/.pi-map.index.md

@@ -0,0 +1,25 @@
+# apps/web/src/components/features/workspace (index)
+dir: apps/web/src/components/features/workspace
+
+## role
+Provides the workspace UI shell and container components that orchestrate the repository browsing, editing, and tool execution environment for the web application.
+## parent
+index: apps/web/src/components/features/.pi-map.index.md
+map: apps/web/src/components/features/.pi-map.md
+## children
+-
+## files
+- FileBrowser.tsx
+- WorkspaceLayout.tsx
+- workspace-card.tsx
+- workspace-create-form.tsx
+- workspace-header.tsx
+- workspace-instance-chips.tsx
+## links
+index: apps/web/src/components/features/workspace/.pi-map.index.md
+map: apps/web/src/components/features/workspace/.pi-map.md
+## workflows
+- change workspace behavior
+  read: FileBrowser.tsx, WorkspaceLayout.tsx, workspace-card.tsx
+## dirty
+-