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/mobile-terminal-ux/.pi-map.md

@@ -0,0 +1,22 @@
+# openspec/changes/mobile-terminal-ux
+dir: openspec/changes/mobile-terminal-ux
+
+index: openspec/changes/mobile-terminal-ux/.pi-map.index.md
+
+## role
+Defines specifications and implementation plans for a mobile-responsive web-based terminal interface with touch controls and virtual keyboard optimization.
+## files
+- .openspec.yaml | Defines an OpenSpec configuration file with schema version and creation date metadata
+- design.md | Design document for making a web-based terminal mobile-friendly by addressing virtual keyboard handling, maximizing screen real estate, and providing special key access without adding new dependencies. | dep: React, xterm.js, browser APIs (Visual Viewport API, Clipboard API, WebSocket)
+- proposal.md | Proposes a mobile-optimized terminal interface with special keys toolbar, dynamic viewport handling, and touch gestures to make terminal sessions usable on mobile devices. | dep: xterm.js, React, visualViewport API
+- tasks.md | Task tracking checklist for implementing a mobile-responsive terminal interface with WebSocket connectivity, touch-friendly controls, and virtual keyboard handling. | dep: React, Visual Viewport API, WebSocket, Visibility API, localStorage, CSS transitions, npm
+## arch
+Documentation-driven specification pattern using OpenSpec metadata with separate design, proposal, and task-tracking documents to progressively define mobile UX requirements.
+## tags
+terminal, mobile, design, handling, react, .openspec, friendly, virtual
+## symbols
+-
+## workflows
+-
+## dirty
+-