Workflow history and analytics command

[codevibesmatter]

Add a kata history command that reviews past workflow sessions with filtering, aggregation, and cross-project inspection.

Motivation

Session state.json files contain rich timeline and completion data, but nothing reads it back for review. Users can't answer questions like:

• What workflows have I run in this project?
• How long did planning mode take on issue Thorough template system: user/project/package layers for mode & spec templates #12?
• Which phases tend to fail verification?

Rough scope

• kata history — list past sessions with mode, issue, timestamps, status
• Filtering by mode, date range, status (completed/abandoned/active)
• --json output for programmatic use
• --cwd=PATH for cross-project inspection
• Aggregation/summary stats (optional, stretch)
• Correlation with verification evidence (optional, stretch)