update import command to accept share links

packages/opencode/src/cli/cmd/import.ts

@@ -8,26 +8,73 @@ import { EOL } from "os"
 
 export const ImportCommand = cmd({
   command: "import <file>",
-  describe: "import session data from JSON file",
+  describe: "import session data from JSON file or URL",
   builder: (yargs: Argv) => {
     return yargs.positional("file", {
-      describe: "path to JSON file to import",
+      describe: "path to JSON file or opencode.ai share URL",
       type: "string",
       demandOption: true,
     })
   },
   handler: async (args) => {
     await bootstrap(process.cwd(), async () => {
-      const file = Bun.file(args.file)
-      const exportData = (await file.json().catch(() => {})) as {
+      let exportData: {
         info: Session.Info
         messages: Array<{
           info: any
           parts: any[]
         }>
+      } | undefined
+
+      const isUrl = args.file.startsWith("http://") || args.file.startsWith("https://")
+
+      if (isUrl) {
+        const urlMatch = args.file.match(/https?:\/\/opencode\.ai\/s\/([a-zA-Z0-9_-]+)/)
+        if (!urlMatch) {
+          process.stdout.write(`Invalid URL format. Expected: https://opencode.ai/s/<slug>`)
+          process.stdout.write(EOL)
+          return
+        }
+
+        const slug = urlMatch[1]
+        const response = await fetch(`https://api.opencode.ai/share_data?id=${slug}`)
+
+        if (!response.ok) {
+          process.stdout.write(`Failed to fetch share data: ${response.statusText}`)
+          process.stdout.write(EOL)
+          return
+        }
+
+        const data = await response.json()
+
+        if (!data.info || !data.messages || Object.keys(data.messages).length === 0) {
+          process.stdout.write(`Share not found: ${slug}`)
+          process.stdout.write(EOL)
+          return
+        }
+
+        exportData = {
+          info: data.info,
+          messages: Object.values(data.messages).map((msg: any) => {
+            const { parts, ...info } = msg
+            return {
+              info,
+              parts,
+            }
+          }),
+        }
+      } else {
+        const file = Bun.file(args.file)
+        exportData = await file.json().catch(() => {})
+        if (!exportData) {
+          process.stdout.write(`File not found: ${args.file}`)
+          process.stdout.write(EOL)
+          return
+        }
       }
+
       if (!exportData) {
-        process.stdout.write(`File not found: ${args.file}`)
+        process.stdout.write(`Failed to read session data`)
         process.stdout.write(EOL)
         return
       }