refactor(tool-input): eliminate SyncWrappers, add canonical toggle and dependsOn gating

Replace 17+ individual SyncWrapper components with a single centralized
ToolSubBlockRenderer that bridges the subblock store with StoredTool.params
via synthetic store keys. This reduces ~1000 lines of duplicated wrapper
code and ensures tool-input renders subblock components identically to
the standalone SubBlock path.

- Add ToolSubBlockRenderer with bidirectional store sync
- Add basic/advanced mode toggle (ArrowLeftRight) using collaborative functions
- Add dependsOn gating via useDependsOnGate (fields disable instead of hiding)
- Add paramVisibility field to SubBlockConfig for tool-input visibility control
- Pass canonicalModeOverrides through getSubBlocksForToolInput
- Show (optional) label for non-user-only fields (LLM can inject at runtime)

Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>

Author: waleedlatif1