v0.3.0

Added

• A session-source interface separating discovery and log normalization from
  analysis, rendering, configuration, and MCP transport.
• Codex rollout support via CLI --source codex and MCP source: "codex".
  CODEX_HOME controls discovery, project filtering uses metadata cwd, and
  portable --file imports detect Claude Code or Codex automatically.
• Codex message/tool normalization, apply-patch file paths, public reasoning
  summaries, compaction markers, duplicate-notification suppression, and
  deterministic event identities. Thread IDs remain distinct from root
  session IDs. Discovery excludes subagent sessions and symlink entries.
• Source identity in JSON mindmaps and catalogs; source-preserving CLI
  snapshot hints and optional source filters for pick history.
• Synthetic adapter, CLI, MCP, and installed-tarball regressions for both
  sources. No private rollout fixtures are distributed.

Fixed

• Tool and file labels redact credentials before truncation, preventing
  partial tokens from surviving shorter heuristic labels.
• Interactive picker and discovery fallback messages apply output redaction.

Breaking

• Pick history is now stored at
  ~/.cache/agent-tree/picks/<source>/<session-id>.jsonl. Flat-directory
  history is neither read nor migrated; Claude and Codex UUIDs cannot share
  or remove one another's stars.
• Nonempty unrecognized imports require an explicit source instead of
  silently producing an empty Claude tree.

This release also includes the 0.2.1 changes.