feat(workflow): add zd command to list project directories

[pdegeeter]

Summary

• Refactor zd command to use native Rust instead of bash script for better performance
• Add "No results found" message when search returns empty results
• Support multiple project directories via projects_directories configuration

Changes

Performance improvement

The zd command now uses the compiled Rust binary (./alfred-zed --dirs) instead of a bash script with loops. This provides:

• Faster execution - Native Rust vs shell loops
• No external dependencies - No need for bash string manipulation
• Unified codebase - Same binary handles both zr and zd commands

Better UX

When no results match the search query, Alfred now displays "No results found" instead of falling back to web search suggestions.

CLI Usage

./alfred-zed [query] # List recent projects (zr)
./alfred-zed --dirs [query] # List project directories (zd)

Files changed

File	Description
src/main.rs	Add --dirs mode, list_directories() function, and empty results handling
workflow/info.plist	Replace bash script with ./alfred-zed --dirs $1
CLAUDE.md	Document new CLI usage and data flow

Test plan

• Install workflow and configure projects_directories with multiple paths
• Run zd - verify all subdirectories are listed
• Run zd - verify filtering works
• Run zd nonexistent - verify "No results found" appears instead of web search
• Run zr - verify recent projects still work (regression test)

[Copilot]

Pull request overview

This PR adds a new zd command to list and open project directories from configured folders, replacing a previous bash-based approach with native Rust implementation for improved performance and maintainability.

Key changes:

• Implements list_directories() function to scan subdirectories from user-configured paths
• Refactors CLI argument parsing to support both zr (recent projects) and zd (directories) modes via --dirs flag
• Adds "No results found" feedback when searches return empty results

Reviewed changes

Copilot reviewed 4 out of 6 changed files in this pull request and generated 7 comments.

Show a summary per file

File	Description
src/main.rs	Adds --dirs mode, list_directories() function, refactors to return Result types, and adds empty results handling
workflow/info.plist	Adds new zd script filter configuration, workflow connections, and projects_directories user configuration
README.md	Documents the new zd command and configuration instructions
CLAUDE.md	Updates project overview with CLI usage examples and data flow documentation
.gitignore	Adds *.alfredworkflow to ignore compiled workflow files

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