Improve history project navigation and usage

[woffko]

Summary

• add all-history token and activity aggregation to project details
• show explicit SCANNING n/m and READY states while project totals are calculated
• add CLASS, SCOMP, and SFULL number styles to History, including mouse controls
• improve project identification using structured session working directories, Git roots, and Windows/WSL path normalization
• add commander-style History navigation: single-click selection, double-click open, and .. to return

Details

• partial project totals stay hidden until the scan completes
• relative working directories are resolved against the session directory
• project identity prefers the dominant structured tool-call workdir and the nearest existing Git root
• cache schema is bumped so existing history is reparsed once with the improved project metadata
• keyboard and wheel navigation remain available alongside mouse navigation

Validation

• cargo test --all-targets --locked — 111 passed
• cargo clippy --all-targets --locked -- -D warnings -A clippy::collapsible-match -A clippy::redundant-guards
• bash scripts/check-ascii.sh
• git diff --check
• release build installed and exercised in the real TUI, including project scanning, style switching, double-click navigation, and .. return

The displayed version remains 0.4.4.