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/styles/pages/.pi-map.md

@@ -0,0 +1,25 @@
+# apps/web/src/styles/pages
+dir: apps/web/src/styles/pages
+
+index: apps/web/src/styles/pages/.pi-map.index.md
+
+## role
+Contains page-specific CSS stylesheets for distinct application views in the web frontend.
+## files
+- git-history.css | Stylesheet for a Git history visualization page with commit list, branch selector, and detail panel layout | dep: CSS custom properties (var(--border), var(--panel), var(--ink), var(--brand), var(--muted))
+- projects.css | Stylesheet for a projects page UI featuring expandable project toggles, repository listings, workspace grids, and repository creation radio controls. | dep: CSS custom properties (variables)
+- repo-workspace.css | Stylesheet for a repository workspace UI with git integration, file management, and code editing components | dep: CSS custom properties (variables), IBM Plex Mono font
+- sessions.css | Stylesheet for session management UI components including cards, dropdowns, forms, and responsive mobile layouts. | dep: CSS custom properties/variables (var(--border), var(--panel), var(--text), var(--space-*), var(--danger), var(--color-border))
+- ssh-keys.css | Styles a responsive SSH key list component that stacks vertically on mobile and switches to horizontal layout on larger screens | dep: CSS custom properties (var(--space-3), var(--space-2), var(--space-4), var(--bg), var(--border))
+- workspace-detail.css | Stylesheet for a workspace detail page with tabbed interface including files, git, tools, and settings views, plus a workspace creation form | dep: CSS custom properties (variables for colors, spacing, typography)
+- workspaces.css | Stylesheet for a workspaces page featuring a responsive grid of workspace cards with status badges, hover effects, and mobile adaptations. | dep: CSS custom properties (var(--space-*), var(--border), var(--panel), var(--muted), var(--success), var(--warning), var(--danger))
+## arch
+Modular page-scoped styling architecture with responsive design patterns (mobile-first breakpoints, grid/flex layouts, component-based organization) and consistent UI system conventions (cards, tabs, forms, badges, hover states).
+## tags
+var(, workspace, stylesheet, git, space, page, detail, history
+## symbols
+-
+## workflows
+-
+## dirty
+-