Synced from monorepo

Changes:
- Resolve relative markdown links to existing cwd files
- Set GROK_SESSION_ID for tool commands and MCP servers
- Heal sessions poisoned by invalid images by persisting the strip
- Accept legacy Ctrl+4 for dashboard open
- Surface the first stderr line on hook failures
- Paste Flameshot image-only screenshots
- Capture and persist bound image capabilities
- Auth straddle hardening with consumed-token sentinel and failure poisoning
- Fix PromptMetadata construction under feature unification
- Select wrapped words across soft-wrap rows
- Finalize stale live children and return wait when already terminal
- Wake the model when a UI kill never delivered a tool result
- [stop] in a subagent overlay cancels the child turn
- Default doom-loop max_threshold to 32
- Honor explicit user grants and narrow allow rules in auto permission mode
- Preserve startup type-ahead into the composer
- Paste and drag images into the composer while the prompt is unfocused
- Subagent-view [stop]/Ctrl+C kills the focused subagent
- Block queue promote while the front row is under edit
- Enable display-refresh auto-cadence by default
- Skip sessions-root scan on live subagent spawn
- Default prompt_cache_key to the conversation id on the Responses backend
- Copyable /session-info with per-row click-to-copy and copy-all
- Frame post-cancel follow-up like an interjection
- Kill and reap ripgrep children when tool calls are cancelled
- Advertise MCP protocol version 2025-11-25
- Add a communication section to the system prompt
- Name the subagent in the wait spinner and count parallel prompt writes
- Hide zero-score first-turn memory
- Render browser verification policy in the prompt template
- Make boundary commits dirty trees for real
- Walk every provisioned mount for prompt, graph, and fs-notify
- Retire the grok-code Direct Mode documentation
- Workspace EnsureBinding, MergeToMain, Push, and start-from-bindings
- Disable inline citations for backend search
- Add UI verification and project rules to grok-build-plan
- Share image byte budgets with compaction
- Show tool-call writing activity instead of waiting for response
- Preserve Auto-mode user intent context