- Renamed subagent completion flow from `submit_result` to `yield` across SDK tools, prompts, and docs.
- Updated executor/task handling to require and parse `yield` calls, replacing legacy submit-result extraction and state flags.
- Added `subagent-yield-reminder` and updated system prompts to require `yield` with `result.data` or `result.error`.
- Renamed hidden-tool and registration plumbing to `yield`, including discovery helpers and renderer/test surface.
- Fixed `G`/`gg` motions to distinguish "no count" (go to last/first line) from explicit count.
- Added parsing for literal `\x1b`/`\r` bytes and backslash escape sequences (`\r`, `\e`, `\n`, `\t`).
- Updated `#readCount` to return `hasCount` flag propagated through operator and motion resolution.
- Synced vim buffer fingerprint from disk on reuse to handle LSP writethrough reformats.
- Added richer session-export HTML rendering for tool calls, metadata badges, and todo trees.
- Added a persistent JavaScript execution tool backed by node:vm with cross-session KV/pubsub support.
- Replaced pythonExecution paths with jsExecution handling across tool labels and message rendering.
- Refactored tool-call rendering into dedicated renderers with shared helpers and fallback error handling.
- Added RedactedThinkingContent type to support secure encrypted reasoning blocks in Anthropic messages.
- Updated message transformation logic to preserve signed thinking blocks and redacted thinking for latest assistant messages in Anthropic conversations.
- Added handling for redacted_thinking events in Anthropic stream processing with type, data, and index fields.
- Added comprehensive tests validating redacted thinking block preservation and Anthropic thinking immutability during message transformation.
- Added ModeChangeEntry type export to public API for tracking agent mode transitions.
- Added mode and modeData fields to SessionContext to track active agent mode state across sessions.
- Added appendModeChange() method to SessionManager for recording mode transition entries.
- Added plan mode state restoration from session entries when resuming interactive mode sessions.
- Updated HTML export filter to treat mode_change entries as settings entries alongside model changes and thinking level changes.
- Added type validation for tool arguments in HTML export template with error handling for invalid values.
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