Add --diagnose flag, remove obsolete helper scripts, fix docs

- Add --diagnose option that shows all PCI paths, storage controllers,
  block devices, and validates current mappings. Replaces the separate
  diagnose-drives.sh script.
- Remove diagnose-drives.sh (incorporated into --diagnose).
- Remove get-serials.sh (redundant with SMART data in main table).
- Remove test-paths.sh (referenced non-existent 0c:00.0 controller).
- Remove todo.md (massively outdated).
- Fix storage controller text overflowing box borders in large1 and
  micro layouts by adding truncation (%-69.69s, %-57.57s).
- Fix chassis name to CX4712 in README.
- Update server mapping statuses from "Requires mapping" to actual
  partially-mapped states.
- Add ⚠ health indicator to README output column docs.
- Update Claude.md metrics to match current state.

Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>

Claude.md

@@ -159,9 +159,9 @@ The project began with:
 
 ## Metrics
 
-- **Lines of Code:** ~330 (main script)
-- **Supported Chassis Types:** 4 (10-bay, large1, micro, spare)
-- **Mapped Servers:** 1 fully (compute-storage-01), 3 pending
+- **Lines of Code:** ~1178 (main script)
+- **Supported Chassis Types:** 3 (10bay, large1, micro)
+- **Mapped Servers:** 1 fully (compute-storage-01), 3 partially (storage-01, large1, compute-storage-gpu-01), 2 stubs (micro1, monitor-02)
 - **Features Added:** 10+
 - **Bugs Fixed:** 6 major, multiple minor
 - **Documentation:** Comprehensive README + this file
@@ -206,4 +206,4 @@ The result is a robust infrastructure management tool that provides instant visi
 - **Human Developer:** LotusGuild
 - **AI Assistant:** Claude Sonnet 4.5 (Anthropic)
 - **Development Date:** January 6, 2026
-- **Project:** Drive Atlas v1.0
+- **Project:** Drive Atlas v1.1.0