New tabs inherit working directory from active tab

[stevenvo]

Summary

Makes new tab creation more intuitive by inheriting the current working directory from the active tab.

Problem

When creating a new tab (Cmd+T), it always starts in the home directory, requiring users to cd back to their project directory. This breaks workflow continuity.

Solution

• Extract cmd:cwd from the active tab's first terminal block
• Pass inherited cwd as metadata to the new tab's terminal block
• Terminal starts in the same directory as the previous tab

Behavior

• With active tab in /projects/myapp: New tab starts in /projects/myapp
• No active tab or no cwd: Falls back to home directory (~)
• Initial launch: Not affected (uses default behavior)

Implementation

• Modified CreateTab in pkg/wcore/workspace.go
• Reads active tab's block metadata for cmd:cwd
• Merges inherited cwd into new tab's terminal block
• Backward compatible (doesn't break existing tab creation)

Test Plan

• cd to project directory
• Press Cmd+T to create new tab
• Verify pwd shows same directory
• Test with no active tab (home directory)
• Test initial app launch (unchanged)

🤖 Generated with Claude Code

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📥 Commits

Reviewing files that changed from the base of the PR and between fbb0c4d and 4a622b7.

📒 Files selected for processing (1)

• pkg/wcore/workspace.go (2 hunks)

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