feat: Add flb search command to list and search available extensions

- Add `flb search [query]` command with alias `list-extensions`
- Supports keyword filtering by name, slug, subtitle, description, and tags
- Supports category filtering via --category option
- Supports --free flag to show only free extensions
- Supports --json flag for machine-readable output
- Supports --simple flag for tab-separated scripting output
- Supports --host option for self-hosted Fleetbase instances
- Uses ANSI colour codes for clean terminal output (chalk v5 is ESM-only)
- Add extensionsListApi constant pointing to /~registry/v1/extensions
- Add displayExtensionsTable() helper for formatted terminal display
- Document new command in README.md with full examples

Author: roncodes

README.md

@@ -11,6 +11,7 @@ FLB (Fleetbase CLI) is a command-line interface tool designed for managing Fleet
 - Automatically convert `composer.json` to `package.json` for PHP packages
 - Scaffold new Fleetbase extensions
 - Set registry token to a Fleetbase instance
+- Search and list available extensions from the registry
 - Install and Uninstall extensions
 - Flexible registry configuration
 
@@ -247,6 +248,54 @@ flb scaffold
 - `-n, --namespace`: The PHP Namespace of the extension to scaffold
 - `-r, --repo`: The Repository URL of the extension to scaffold
 
+### Searching for Extensions
+
+Search and list all available extensions from the Fleetbase registry. Supports keyword search, category filtering, and multiple output formats.
+
+```bash
+flb search [query]
+```
+
+Alias: `flb list-extensions`
+
+**Options:**
+- `[query]`: (Optional) Search keyword to filter by name, slug, subtitle, description, or tags
+- `-c, --category <category>`: Filter by category name or slug
+- `-f, --free`: Show only free extensions
+- `--json`: Output results as raw JSON (useful for scripting)
+- `--simple`: Output one extension per line as tab-separated values: `slug`, `name`, `version`, `price`
+- `-h, --host <host>`: API host to fetch extensions from (default: `https://api.fleetbase.io`)
+
+**Examples:**
+```bash
+# List all available extensions
+flb search
+
+# Search by keyword
+flb search routing
+flb search "route optimization"
+
+# Filter by category
+flb search --category telematics
+
+# Show only free extensions
+flb search --free
+
+# Combine filters
+flb search --free --category telematics
+
+# JSON output for scripting
+flb search --json
+flb search routing --json | jq '.[].slug'
+
+# Simple tab-separated output
+flb search --simple
+
+# Search against a self-hosted instance
+flb search --host https://api.myfleetbase.com
+flb search routing --host http://localhost:8000
+```
+
 ### Installing a Extension
 
 To install a extension, use: 

index.js

@@ -16,6 +16,7 @@ const maxBuffer = 1024 * 1024 * 50; // 50MB
 const defaultRegistry = 'https://registry.fleetbase.io';
 const packageLookupApi = 'https://api.fleetbase.io/~registry/v1/lookup';
 const bundleUploadApi = 'https://api.fleetbase.io/~registry/v1/bundle-upload';
+const extensionsListApi = 'https://api.fleetbase.io/~registry/v1/extensions';
 const starterExtensionRepo = 'https://github.com/fleetbase/starter-extension.git';
 
 function publishPackage (packagePath, registry, options = {}) {
@@ -1293,6 +1294,138 @@ function loginCommand (options) {
     }
 }
 
+// Helper: ANSI colour utilities (chalk v5 is ESM-only; use raw ANSI codes in this CJS file)
+const ansi = {
+    reset: '\x1b[0m',
+    bold: '\x1b[1m',
+    dim: '\x1b[2m',
+    green: '\x1b[32m',
+    yellow: '\x1b[33m',
+    cyan: '\x1b[36m',
+    white: '\x1b[37m',
+    brightWhite: '\x1b[97m',
+    colorize: (code, text) => `${code}${text}\x1b[0m`,
+};
+
+// Helper: format extension list for terminal display
+function displayExtensionsTable(extensions) {
+    const count = extensions.length;
+    console.log(ansi.colorize(ansi.bold + ansi.brightWhite, `Found ${count} extension${count !== 1 ? 's' : ''}:\n`));
+
+    extensions.forEach((ext, index) => {
+        const price = ext.payment_required
+            ? ansi.colorize(ansi.yellow, `$${ext.on_sale ? ext.sale_price : ext.price} ${(ext.currency || 'USD').toUpperCase()}`)
+            : ansi.colorize(ansi.green, 'Free');
+
+        const installs = ansi.colorize(ansi.dim, `\u2193 ${ext.installs_count ?? 0}`);
+        const category = ext.category?.name
+            ? ansi.colorize(ansi.cyan, `[${ext.category.name}]`)
+            : '';
+        const version = ansi.colorize(ansi.dim, `v${ext.version || '?'}`);
+        const publisher = ext.publisher?.name
+            ? ansi.colorize(ansi.dim, `by ${ext.publisher.name}`)
+            : '';
+
+        console.log(`${ansi.colorize(ansi.bold + ansi.brightWhite, ext.name)} ${version}  ${price}  ${installs}  ${category}`);
+        console.log(`  ${ansi.colorize(ansi.dim, ext.slug)}  ${publisher}`);
+        if (ext.subtitle) {
+            console.log(`  ${ext.subtitle}`);
+        }
+        console.log(`  ${ansi.colorize(ansi.dim, 'Install:')} flb install ${ext.slug}`);
+
+        if (index < extensions.length - 1) {
+            console.log('');
+        }
+    });
+
+    console.log(ansi.colorize(ansi.dim, '\n\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500'));
+    console.log(ansi.colorize(ansi.dim, `Use ${ansi.colorize(ansi.white, 'flb install <slug>')} to install an extension.`));
+    console.log(ansi.colorize(ansi.dim, `Use ${ansi.colorize(ansi.white, 'flb search --json')} for machine-readable output.\n`));
+}
+
+// Command: search and list available extensions
+async function searchExtensionsCommand(query, options) {
+    const host = options.host || 'https://api.fleetbase.io';
+    const apiHost = host.startsWith('http://') || host.startsWith('https://')
+        ? host
+        : `https://${host}`;
+    const endpoint = `${apiHost}/~registry/v1/extensions`;
+
+    if (!options.json && !options.simple) {
+        console.log('\n\u{1F50D} Searching Fleetbase Extensions...\n');
+    }
+
+    try {
+        const response = await axios.get(endpoint);
+        let extensions = response.data;
+
+        if (!Array.isArray(extensions) || extensions.length === 0) {
+            console.log('No extensions found.');
+            return;
+        }
+
+        // Filter by search query (name, slug, subtitle, description, tags)
+        if (query) {
+            const q = query.toLowerCase();
+            extensions = extensions.filter(ext =>
+                ext.name?.toLowerCase().includes(q) ||
+                ext.slug?.toLowerCase().includes(q) ||
+                ext.subtitle?.toLowerCase().includes(q) ||
+                ext.description?.toLowerCase().includes(q) ||
+                (Array.isArray(ext.tags) && ext.tags.some(t => t.toLowerCase().includes(q)))
+            );
+        }
+
+        // Filter by category
+        if (options.category) {
+            const cat = options.category.toLowerCase();
+            extensions = extensions.filter(ext =>
+                ext.category?.slug?.toLowerCase().includes(cat) ||
+                ext.category?.name?.toLowerCase().includes(cat)
+            );
+        }
+
+        // Filter to free only
+        if (options.free) {
+            extensions = extensions.filter(ext => !ext.payment_required);
+        }
+
+        if (extensions.length === 0) {
+            const qualifier = query || options.category;
+            console.log(`No extensions found${qualifier ? ` matching "${qualifier}"` : ''}.`);
+            return;
+        }
+
+        // JSON output mode
+        if (options.json) {
+            console.log(JSON.stringify(extensions, null, 2));
+            return;
+        }
+
+        // Simple one-per-line output mode (for scripting)
+        if (options.simple) {
+            extensions.forEach(ext => {
+                const price = ext.payment_required ? `$${ext.on_sale ? ext.sale_price : ext.price}` : 'free';
+                console.log(`${ext.slug}\t${ext.name}\tv${ext.version || '?'}\t${price}`);
+            });
+            return;
+        }
+
+        // Default: formatted table output
+        displayExtensionsTable(extensions);
+
+    } catch (error) {
+        if (error.response) {
+            console.error(`\nSearch failed: ${error.response.status} ${error.response.statusText}`);
+        } else if (error.request) {
+            console.error('\nSearch failed: No response from server. Check your --host or network connection.');
+        } else {
+            console.error(`\nSearch failed: ${error.message}`);
+        }
+        process.exit(1);
+    }
+}
+
 program.name('flb').description('CLI tool for managing Fleetbase Extensions').version(`${packageJson.name} ${packageJson.version}`, '-v, --version', 'Output the current version');
 program.option('-r, --registry [url]', 'Specify a fleetbase extension repository', defaultRegistry);
 
@@ -1333,6 +1466,17 @@ program
         await installPackage(packageName, fleetbasePath);
     });
 
+program
+    .command('search [query]')
+    .alias('list-extensions')
+    .description('Search and list available Fleetbase extensions')
+    .option('-c, --category <category>', 'Filter by category name or slug')
+    .option('-f, --free', 'Show only free extensions')
+    .option('--json', 'Output results as raw JSON')
+    .option('--simple', 'Output one extension per line: slug, name, version, price (for scripting)')
+    .option('-h, --host <host>', 'API host to fetch extensions from (default: https://api.fleetbase.io)')
+    .action(searchExtensionsCommand);
+
 program
     .command('uninstall [packageName]')
     .option('-p, --path <path>', 'Path of the Fleetbase instance to uninstall for')