[BUG] JetBrains plugin ignores --dangerously-skip-permissions and acceptEdits mode, shows diff approval dialogs

Description

When running Claude Code in a JetBrains IDE integrated terminal (RubyMine, IntelliJ, etc.) with --dangerously-skip-permissions enabled, the JetBrains plugin still opens diff approval dialogs for every file edit, requiring manual Accept/Reject.

This was previously reported as #12371, which was incorrectly closed as a duplicate of #11206. The comment closing it was wrong — this is a JetBrains plugin-specific bug, not a general auto-accept issue. #11206 is about the CLI's accept-all-edits mode not working; this bug is about the JetBrains plugin's openDiff MCP tool ignoring the CLI's permission mode entirely.

#12371 should not have been closed. It is still a bug that needs to be fixed.

Root Cause Analysis

The JetBrains plugin (claude-code-jetbrains-plugin) registers an openDiff MCP tool via DiffTools.kt that intercepts Edit tool calls and opens a diff viewer in the IDE with Accept/Reject buttons. This MCP tool operates independently of the CLI's permission mode — it does not check whether --dangerously-skip-permissions or acceptEdits is active before showing the dialog.

The plugin's PluginSettings$State class has no setting to control this behavior. The only configurable options are: claudeCommand, claudeConfigDir, enableAutoUpdates, enableOptEnterNewLine, enableWindowsDriveMapping, enableWslLocalhostMapping, skipClaudeNotFoundNotification.

Steps to Reproduce

1. Configure the JetBrains plugin with claude --dangerously-skip-permissions as the Claude command (Settings → Tools → Claude Code)
2. Open a terminal in the JetBrains IDE
3. Run Claude Code — confirm it shows "Bypass Permissions" mode
4. Ask Claude to edit a file
5. Observe: The IDE opens a diff tab with Accept/Reject buttons and the terminal shows a permission prompt, despite bypass mode being active

Expected Behavior

With --dangerously-skip-permissions active, the plugin should auto-accept edits without showing diff dialogs, matching the CLI's behavior.

Environment

• Claude Code: latest
• JetBrains plugin: 0.1.14-beta
• IDE: RubyMine 2025.3
• OS: macOS (darwin)

Related Issues

• #12371 — Original report (incorrectly closed as duplicate)
• #11206 — Unrelated general auto-accept bug (closed as Not Planned)
• #11756 — Feature request for auto-approve edits without IDE dialogs (closed as Not Planned)