Issue #012: iTerm2 Terminal Backend

[fbbp]

Description

Implement backend for iTerm2 integration using iTerm2's AppleScript API for split panes.

Acceptance Criteria

• Detects if running in iTerm2
• Creates new tab or split pane for session
• Writes commands to pane via AppleScript
• Graceful fallback when API unavailable

Sub-issues

• docs: Comprehensive documentation improvements for agents, commands, and contexts #12.1 Implement iTerm2 AppleScript integration
• docs: Comprehensive documentation improvements for agents, commands, and contexts #12.2 Implement pane/session creation
• docs: Comprehensive documentation improvements for agents, commands, and contexts #12.3 Implement I/O handling and fallback

Dependencies

• Blocked by: feat: Add OpenCode Expert Suite for platform operations #10

Priority

P1

[affaan-m]

See discussion in #122 - these issues appear to be for a separate TeammateTool project.

[affaan-m]

Closing: This is a feature request for a separate TeammateTool project, not a bug/feature for ECC. Please create these issues in your own repository. Feel free to reference ECC patterns!