agent-resume v0.1.1

Fixes design issue

The model no longer needs to pass agent=codex|opencode|claude on every call.
Configure the MCP server once with:

AGENT_RESUME_AGENT=codex
AGENT_RESUME_AGENT=opencode
AGENT_RESUME_AGENT=claude

or use ~/.config/agent-resume/config.json:

{ "agent": "codex" }

Codex now prefers the real state DB:

~/.codex/state_5.sqlite
  table: threads
  id           -> SESSION_ID
  cwd          -> project match
  rollout_path -> transcript file

Fallback remains ~/.codex/session_index.jsonl.

OpenCode still uses SQLite session tables from ~/.local/share/opencode/*.db.
Claude Code still scans ~/.claude/projects/<encoded-cwd>/*.jsonl.

README now documents the exact source findings from: