- Introduced advisory note output as `<advisory>` tags with optional severity and guidance.
- Updated session transcript formatting to `### Session update` and inline watched role labels.
- Added shared `escapeXmlText` utility and escaped XML-sensitive text in advisor outputs.
- Added one-shot success run token metrics and one-shot statistics reporting.
- Added an includeToolIntent option to session history formatting to control intent comments.
- Updated tool call rendering to prefix call lines with a leading comment when the tool argument contains a non-empty intent field.
- Enabled intent rendering in advisor history updates and added tests for intent-on and intent-off output paths.
Registers a HistoryProtocolHandler with the internal URL router: history:// lists every registered agent (id, status, kind, last activity) and history://<agentId> renders a concise markdown transcript (tool calls collapsed to one line each, thinking elided). Live refs render from the in-memory message array; parked refs load read-only from the JSONL session file via loadSessionMessagesReadOnly (no writer, no lock). System prompt + read tool prompt + docs/tools/read.md learn the new scheme.
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