feat(cli): add session delete command

.opencode/agent/translator.md

@@ -359,6 +359,7 @@ opencode serve --hostname 0.0.0.0 --port 4096
 opencode serve [--port <number>] [--hostname <string>] [--cors <origin>]
 opencode session [command]
 opencode session list
+opencode session delete <sessionID>
 opencode stats
 opencode uninstall
 opencode upgrade

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

@@ -38,10 +38,34 @@ function pagerCmd(): string[] {
 export const SessionCommand = cmd({
   command: "session",
   describe: "manage sessions",
-  builder: (yargs: Argv) => yargs.command(SessionListCommand).demandCommand(),
+  builder: (yargs: Argv) => yargs.command(SessionListCommand).command(SessionDeleteCommand).demandCommand(),
   async handler() {},
 })
 
+export const SessionDeleteCommand = cmd({
+  command: "delete <sessionID>",
+  describe: "delete a session",
+  builder: (yargs: Argv) => {
+    return yargs.positional("sessionID", {
+      describe: "session ID to delete",
+      type: "string",
+      demandOption: true,
+    })
+  },
+  handler: async (args) => {
+    await bootstrap(process.cwd(), async () => {
+      try {
+        await Session.get(args.sessionID)
+      } catch {
+        UI.error(`Session not found: ${args.sessionID}`)
+        process.exit(1)
+      }
+      await Session.remove(args.sessionID)
+      UI.println(UI.Style.TEXT_SUCCESS_BOLD + `Session ${args.sessionID} deleted` + UI.Style.TEXT_NORMAL)
+    })
+  },
+})
+
 export const SessionListCommand = cmd({
   command: "list",
   describe: "list sessions",