feat: add project-first session explorer for v0.2.0

[halilneed]

AgentMemora v0.2.0

This release makes the dashboard easier to read and navigate before broader launch.

Project-first context browsing

• groups Claude Code history by project instead of showing one long full-width session stream
• shows project-level counts for primary sessions, subagents, prompts and tool calls
• opens each project into a compact two-column session grid
• keeps Resume, Fork, Context Capsule and readable transcript actions inside each session

Complete subagent visibility

• removes the previous 8-subagent truncation in the detailed browser
• lists every indexed subagent under its project
• keeps the small Subagent Comms panel as a recent preview only

Usability

• narrower project/session workspace instead of edge-to-edge rows
• project cards provide a clear first navigation step
• search now filters projects and nested session/subagent cards without turning table rows into block elements
• responsive layout collapses cleanly on smaller screens

Release

• bumps npm package to 0.2.0
• updates README to document project-level context inventory

No scanner safety boundary changes: vendor JSONL remains read-only and memory writes remain explicitly guarded.