run: replay session history on interactive resume (#26880)

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

@@ -218,6 +218,15 @@ export const RunCommand = effectCmd({
         type: "boolean",
         describe: "show thinking blocks",
       })
+      .option("replay", {
+        type: "boolean",
+        default: false,
+        describe: "replay visible session history on interactive resume",
+      })
+      .option("replay-limit", {
+        type: "number",
+        describe: "cap visible interactive replay to the newest N messages",
+      })
       .option("interactive", {
         alias: ["i"],
         type: "boolean",
@@ -269,6 +278,21 @@ export const RunCommand = effectCmd({
         die("--interactive cannot be used with --format json")
       }
 
+      if (args.replay && !args.interactive) {
+        die("--replay requires --interactive")
+      }
+
+      if (args["replay-limit"] !== undefined && !args.interactive) {
+        die("--replay-limit requires --interactive")
+      }
+
+      if (
+        args["replay-limit"] !== undefined &&
+        (!Number.isInteger(args["replay-limit"]) || args["replay-limit"] <= 0)
+      ) {
+        die("--replay-limit must be a positive integer")
+      }
+
       if (args.interactive && !process.stdout.isTTY) {
         die("--interactive requires a TTY stdout")
       }
@@ -281,6 +305,8 @@ export const RunCommand = effectCmd({
         }
       }
 
+      const replay = args.replay || args["replay-limit"] !== undefined
+
       const root = Filesystem.resolve(process.env.PWD ?? process.cwd())
       const directory = (() => {
         if (!args.dir) return args.attach ? undefined : root
@@ -786,6 +812,8 @@ export const RunCommand = effectCmd({
             sessionID,
             sessionTitle: sess.title,
             resume: Boolean(args.session || args.continue) && !args.fork,
+            replay,
+            replayLimit: args["replay-limit"],
             agent,
             model,
             variant: args.variant,
@@ -821,6 +849,8 @@ export const RunCommand = effectCmd({
             agent: args.agent,
             model,
             variant: args.variant,
+            replay,
+            replayLimit: args["replay-limit"],
             files,
             initialInput,
             thinking,