[FEATURE] Allow seamless session resumption by name across directories

Preflight Checklist

• [x] I have searched existing requests and this feature hasn't been requested yet
• [x] This is a single feature request (not multiple features)

Problem Statement

Description:
Currently, resuming sessions across directories requires significant mental overhead:

1. Finding the session ID (not memorable)
2. Exiting Claude and running a terminal command
3. Manually changing directories

When using /resume, Claude displays:
This conversation is from a different directory.

To resume, run:
cd 'path/to/directory' && claude --resume

This workflow is cumbersome, especially when managing multiple active sessions across different projects.

Proposed Solution

## Proposed Enhancement

### 1. Resume by Session Name
Allow users to resume sessions using their custom names (set via /rename):
/resume "seattle desserts"
/resume "laptop troubleshooting"

Instead of requiring the session ID:
/resume 435047f4-db88-4032-8bd3-97060db07b2c

### 2. Seamless Directory Switching
When resuming a session in a different directory:

• Claude automatically changes to that directory context
• The session resumes without requiring CLI restart
• No manual terminal commands needed

### 3. Session Discovery
Add a command to list recent/active sessions across all directories:
/sessions

Output:
Recent Sessions:

1. seattle desserts (dessert specials/) - 5 days ago
2. Laptop Power Issues (home/) - 2 weeks ago
3. OKR Review Tool (work/projects/) - 1 week ago

Alternative Solutions

_No response_

Priority

High - Significant impact on productivity

Feature Category

CLI commands and flags

Use Case Example

## Use Case

A user working on multiple projects:

• Has a dessert tracker project in ~/Documents/projects/desserts/
• Has a work dashboard in ~/work/analytics/
• Has personal scripts in ~/scripts/

Currently, to switch between these sessions after closing Claude:

1. Remember which session was which
2. Find the session ID somehow
3. Exit current session
4. Navigate to correct directory
5. Run resume command with session ID

## Expected Behavior

From any Claude session:
/sessions
Recent Sessions:

1. seattle desserts (Documents/projects/desserts/) - Active
2. kusto dashboard (work/analytics/) - 3 hours ago
3. home automation (scripts/) - Yesterday

/resume "kusto dashboard"
[Claude seamlessly switches to that session and directory]
✓ Resumed session: kusto dashboard
Working directory: ~/work/analytics/

## Benefits

• Reduces mental overhead of remembering session IDs
• Makes Claude more usable for multi-project workflows
• Eliminates friction when returning to previous conversations
• Aligns with how users naturally think about their work (by project name, not ID)

Additional Context

_No response_