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/.pi-map.md

@@ -0,0 +1,30 @@
+# apps/web/src
+dir: apps/web/src
+
+index: apps/web/src/.pi-map.index.md
+
+## role
+Frontend web application entry point and core infrastructure for a React-based single-page application with authentication, routing, and domain type definitions.
+## files
+- main.tsx | Entry point that bootstraps a React SPA with routing, authentication, and session management context providers. | dep: react, react-dom/client, react-router-dom, ./router, ./state/auth, ./state/sessions, ./styles/tokens.css, ./styles/global.css, ./styles/utilities.css, ./styles/syntax-highlight.css, ./styles/pages/git-history.css, ./styles/pages/repo-workspace.css, ./styles/pages/projects.css, ./styles/pages/sessions.css, ./styles/pages/ssh-keys.css, ./styles/pages/workspace-detail.css, ./styles/pages/workspaces.css, react-dom, ./styles/*
+- router.tsx | Defines the React Router configuration for a web application with protected routes, nested layouts, and redirects. | exp: AppRouter | dep: react-router-dom, ./components/app-shell, ./components/protected-route, ./pages/DashboardPage, ./pages/PlaceholderPage, ./pages/ProfilePage, ./pages/ProjectsPage, ./pages/GitRepositoriesPage, ./pages/GitHistoryPage, ./pages/ProjectSettingsPage, ./pages/SettingsPage, ./pages/TerminalPage, ./pages/ToolWorkshopPage, ./pages/SshKeysPage, ./pages/ConfigProfilesPage, ./pages/SessionsPage, ./pages/WorkspacesPage, ./pages/WorkspaceDetailPage
+- types.ts | Defines TypeScript type definitions for user sessions, projects, repositories, and workspaces in an application. | exp: SessionUser, SessionPayload, Project, WorkspaceSummary, RepositorySummary, ProjectWithRepos
+## arch
+Layered React SPA architecture using context providers for cross-cutting concerns (auth/session), declarative routing with protected route guards and nested layouts, and centralized TypeScript type definitions for domain models.
+## tags
+pages, styles, css, router, react, session, dom, workspace
+## symbols
+- AppRouter
+- SessionUser
+- SessionPayload
+- Project
+- WorkspaceSummary
+- RepositorySummary
+- ProjectWithRepos
+## workflows
+- change src behavior
+  read: main.tsx, router.tsx, types.ts
+- explore src subdirectories
+  index: apps/web/src/api/.pi-map.index.md, apps/web/src/components/.pi-map.index.md, apps/web/src/hooks/.pi-map.index.md
+## dirty
+-