chore: CoCo changelog updated — review cheatsheet

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The Cortex Code changelog has been updated.

Please review the changelog and update cortex-code-cheatsheet.md if any new features, commands, or behaviors should be reflected.

Changelog preview (first 40 lines)

# Cortex Code changelog

- [Cortex Code](/user-guide/cortex-code/cortex-code)
- [Cortex Code Desktop release notes](/user-guide/cortex-code/cortex-code-desktop/release-notes)
- [Cortex Code in Snowsight](/user-guide/cortex-code/cortex-code-snowsight)
- [Cortex Code CLI](/user-guide/cortex-code/cortex-code-cli)

This page documents notable changes to Cortex Code CLI.

## 1.0.77

### Added

- `/changelog` command: View release notes directly in the CLI.
- `/mcp` manager overhaul: Split-pane view with search and filter, add/edit/delete server controls, source badges, OAuth state display, invalid-tool diagnostics, and correct disable semantics.
- SQL read-only mode: `--sql-read-only` launch flag and `/sql-writes on%off%status` slash command to restrict write operations.
- Project skill discovery: Added `.agents/skills` as a project-level skill discovery directory alongside the existing `.snowflake/cortex/skills`.
- Clipboard shortcut: Added `ESC+C` to copy the current input to the clipboard.
- Fast in-repo search: Added `/index` command backed by an FTS5 trigram index for instant grep across large codebases.
- ACP session identity: Editor integrations can now supply a session ID via `_meta.sessionId` in ACP requests.
- GPT 5.5 model support: Added GPT 5.5 to available coding and reasoning models.
- Mac workspace acceleration: `ws create --hv=vz` uses the Apple Virtualization framework directly for ~1-second boots without Lima.
- Rule management: Session-scoped rule suppression and inline editing of rule text, category, and tags.
- Agent SDK: Support for custom MCP tool definitions and hook callbacks.

### Fixed

- Role switching: `USE ROLE` via `sql_execute` no longer causes 403 errors on subsequent agent API calls (dedicated connection isolation).
- Large command output: Bash commands producing more than 30K characters are no longer silently truncated; output between 30K–50K is preserved inline and output over 50K is offloaded to a file.
- Plan mode: Plan mode is now correctly disabled immediately after the user approves a plan.
- Memory search: No longer silently disabled when the snowmem embed endpoint returns a malformed response.
- Snowflake OAuth retry: Retrying OAuth no longer purges all stored credentials.
- `data_diff`: Now works correctly on user machines after bundling the required PBS Python runtime.
- Snowmem embed parsing: Fixed incorrect 1-dimensional response handling; responses are now correctly parsed as 1024-dimensional vectors.

### Changed

- Permission prompts: `tgrep` and `cron_create` now prompt for permission approval instead of auto-approving.

## 1.0.65

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This issue was opened automatically by the changelog-watcher workflow.