chore(release): 0.2.1

- Imported `chalk` for terminal color support.
- Constructed a formatted list of previously used models, applying cyan coloring.
- Updated user prompt to include the colored model list for clearer visibility.

.opencode/plans/archive/1774250210640-eager-orchid.md

@@ -0,0 +1,73 @@
+---
+model: mimo-v2-pro-free
+---
+
+# Remember Last Used Models
+
+## Goal
+When CLI `open` is called without `-m` models, read last used models from `~/.config/opencode-multi-model/settings.json` and confirm with user (Y/n). Use `--force` to skip confirmation. After successful open from CLI, persist models to settings. Tool path is unchanged — always requires explicit values.
+
+## Files to Modify
+
+| File | Change |
+|---|---|
+| `src/core/utils.ts` | Add `loadSettings()`, `saveSettings()`, and move `promptUser` here |
+| `src/types.ts` | Add `MultiModelSettings` interface and `saveToSettings` to `MultiModelOptions` |
+| `src/core/open.ts` | Conditional save after success when `saveToSettings` is true |
+| `src/core/close.ts` | Remove local `promptUser`, import from utils |
+| `src/core/cleanup.ts` | Remove local `promptUser`, import from utils |
+| `src/cli.ts` | Load settings + confirmation (unless `--force`) |
+| `tests/utils.test.ts` | Add tests for loadSettings/saveSettings |
+| `tests/open.test.ts` | Add tests for settings save on success |
+
+## Implementation Details
+
+### 1. `src/types.ts` — Add settings interface and option flag
+
+```ts
+export interface MultiModelSettings {
+  lastModels: string[];
+}
+```
+
+Add `saveToSettings?: boolean` to `MultiModelOptions`.
+
+### 2. `src/core/utils.ts` — Settings read/write + shared promptUser
+
+Add three new exported functions:
+
+- `getSettingsPath(): string` — returns `~/.config/opencode-multi-model/settings.json`
+- `loadSettings(): Promise<MultiModelSettings>` — reads and parses the JSON file. Returns `{ lastModels: [] }` if file doesn't exist or is invalid.
+- `saveSettings(settings: MultiModelSettings): Promise<void>` — creates directory if needed, writes JSON with 2-space indent.
+
+Also move the `promptUser` function (currently duplicated in `close.ts:17-29` and `cleanup.ts:9-21`) into `utils.ts` as a shared export. Remove the local copies from both files and update imports.
+
+### 3. `src/core/open.ts` — Conditional save after full success
+
+Before the successful return at line 310, if `options.saveToSettings` is true, call `saveSettings({ lastModels: models })`. Only save on full success, not partial. CLI passes `saveToSettings: true`; tool passes nothing (defaults false).
+
+### 4. `src/cli.ts` — Settings load + confirmation + --force
+
+Add `-f, --force` option to the `open` command: `.option("-f, --force", "Skip confirmation prompts", false)` (matches close/cleanup pattern).
+
+In the `open` command action, before calling `openMultiModel`:
+1. If `options.models` is empty, call `loadSettings()`.
+2. If `settings.lastModels` is non-empty, use those. If empty, proceed with empty array (existing error from core function).
+3. If models were loaded from settings and `--force` is not set, confirm: `Use models [model1, model2]? (Y/n): ` using `promptUser` from utils.
+4. If user rejects (n, no), print error and exit.
+5. Pass `saveToSettings: true` to `openMultiModel` so successful runs persist the models.
+
+### 5. Tests
+
+- `utils.test.ts`: Test `loadSettings` returns defaults for missing file, parses valid JSON, handles corrupt JSON gracefully. Test `saveSettings` writes correct content.
+- `open.test.ts`: Test that `openMultiModel` calls `saveSettings` on success (mock `fs` / the save function).
+
+## Verification
+
+1. Run `bun run typecheck` — no type errors
+2. Run `bun run lint` — no lint errors
+3. Run `bun test` — all tests pass
+4. Manual CLI test:
+   - `opencode-multi-model open test1 -m model1 model2` → saves settings
+   - `opencode-multi-model open test2` → prompts with saved models, confirm with Enter → uses saved models
+   - `opencode-multi-model open test3` → prompt, type `n` → cancels

.opencode/tools/multi-model.ts

@@ -1,7 +1,8 @@
 // Re-export open and close tools for project-level use via relative paths.
 // For published package usage, change imports to "@username/opencode-multi-model".
 
+import { cleanupTool } from "../../src/tools/cleanup";
 import { closeTool } from "../../src/tools/close";
 import { openTool } from "../../src/tools/open";
 
-export { closeTool as close, openTool as open };
+export { cleanupTool as cleanup, closeTool as close, openTool as open };

AGENTS.md

@@ -0,0 +1,151 @@
+# AGENTS.md
+
+## Project Overview
+
+opencode-multi-model is a Bun/TypeScript project that provides multi-model tmux session management for AI coding assistants. It allows running multiple AI models simultaneously in isolated tmux windows with separate git worktrees.
+
+Available as three integration modes:
+- **OpenCode Plugin**: Loaded via `opencode.json` plugin array
+- **Standalone CLI**: Install globally and run `opencode-multi-model open <session> -m <models...>`
+- **Project Tool**: Import core functions from `"opencode-multi-model/core"` for project-level commands (used during development).
+
+Requires: tmux, git, opencode or kilo binary, Bun runtime.
+
+## Build, Lint, and Test Commands
+
+```bash
+# Install dependencies
+bun install
+
+# Build for production
+bun run build
+
+# Run tests
+bun test
+
+# Run tests with coverage (HTML report in ./coverage)
+bun run coverage
+# Run a specific test by name
+bun test --test-name-pattern "fails if session name is empty"
+
+# TypeScript type checking
+bun run typecheck
+
+# Lint with Biome
+bun run lint
+
+# Auto-fix lint issues
+bun run lint:fix
+
+# Format code with Biome
+bun run format
+
+# Full quality check
+bun run typecheck && bun run lint
+```
+
+## Code Style Guidelines
+
+### General
+
+- Use **TypeScript** with strict mode
+- Use **Bun** as the runtime and package manager
+- Use ESM modules (`"type": "module"` in package.json)
+- Use `node:` prefix for Node.js built-ins
+
+### Formatting (Biome)
+
+- **Indent**: 2 spaces (not tabs)
+- **Quote style**: Double quotes for JS strings
+- **Semicolons**: Required
+- Run `bun run format` to format files
+
+### TypeScript Conventions
+
+- Use `interface` for object shapes; avoid `type` aliases unless needed
+- Use explicit return types on exported functions
+- Avoid `any` when possible
+- Use `noUncheckedIndexedAccess: true` and `noImplicitOverride: true` in tsconfig
+- All types/interfaces go in `src/types.ts`
+
+### Naming Conventions
+
+- **Files**: kebab-case (`multi-model-open.ts`)
+- **Functions**: camelCase (`openMultiModel`)
+- **Types/Interfaces**: PascalCase (`MultiModelOptions`)
+- **Constants**: UPPER_SNAKE_CASE (e.g., `MAX_SUGGESTIONS`)
+
+### Imports
+
+- Use `import type` for type-only imports
+- Group imports: external packages, internal modules, types
+- Biome automatically organizes imports
+
+### Documentation
+
+- Use JSDoc for all exported functions
+- Include `@example`, `@param`, and `@returns` descriptions
+- Add inline comments for hard-to-understand code
+- Modify Readme.md, if implementation details have changed.
+
+### Error Handling
+
+- Return result objects (e.g., `MultiModelResult`, `CloseSessionResult`, `CleanupResult`) with `success: boolean`
+- Include descriptive error messages prefixed with `Error:`
+- Provide actionable error messages (e.g., suggest valid models on invalid model name)
+- Use `chalk` for colored terminal output (red for errors, dim for secondary info, bold for primary info)
+
+### Shell Commands
+
+- Use `Bun.$` template tag for shell commands
+- Always use `quiet().nothrow()` to capture output without throwing
+- Wrap command execution in `runCommand()` utility from `core/utils.ts`
+- Use `shellQuote()` for user-provided values in shell commands
+
+### Testing
+
+- Use `bun:test` framework
+- Mock `Bun.$` using the `mock()` function from `bun:test`
+- Use `spyOn()` for fs/os module mocking
+- Group tests with `describe()` blocks
+- Test file naming: `*.test.ts` in `tests/` directory
+
+## Project Structure
+
+```
+src/
+├── index.ts          # Plugin entry point (default export)
+├── cli.ts            # CLI entry point (commander setup)
+├── types.ts          # All TypeScript interfaces/types
+├── core/
+│   ├── index.ts      # Core exports
+│   ├── open.ts       # Session launch logic
+│   ├── close.ts      # Session close logic
+│   ├── cleanup.ts    # Archive tag cleanup logic
+│   └── utils.ts      # Shared utilities (runCommand, shellQuote, etc.)
+└── tools/
+    ├── open.ts       # OpenCode tool definition
+    ├── close.ts      # CloseCode tool definition
+    └── cleanup.ts    # Cleanup tool definition
+tests/
+├── open.test.ts         # Open command tests
+├── close.test.ts        # Close command tests
+├── cleanup.test.ts      # Cleanup command tests
+├── open_error.test.ts   # Open error handling tests
+├── close_error.test.ts  # Close error handling tests
+└── utils.test.ts        # Utility function tests
+```
+
+### Git Branch and Tag Naming
+
+- Session branches: `opencode/<session-name>/<window-name>`
+- Archive tags: `archive/<branch-name>-<timestamp>` (created by close command)
+- Worktrees: `~/.local/share/opencode/multi-model/<session>/<window>/`
+
+### Common Pitfalls
+
+- Tmux session names use raw input; git branches/paths use sanitized names
+- Window names must be unique; collisions get numeric suffixes (e.g., `gpt-5-2`, `gpt-5-2-2`)
+- Window names are truncated to 24 characters to fit tmux limits
+- Worktree paths are checked for existence before creation to avoid conflicts
+- Archive tags preserve branch state before deletion for recovery

README.md

@@ -62,6 +62,11 @@ sessionName: my-session, models: ["openai/gpt-5.2", "anthropic/claude-3-5-sonnet
 call tool multi-model-close with sessionName: my-session
 ```
 
+**Cleanup archive tags (using tool):**
+```
+call tool multi-model-cleanup
+```
+
 **Close a session (using manual command):**
 ```bash
 tmux kill-session -t my-session && rm -rf ~/.local/share/opencode/multi-model/my-session && git worktree prune && git branch -D $(git branch --format='%(refname:short)' --list 'opencode/my-session/*')
@@ -88,6 +93,21 @@ opencode-multi-model open my-session -m openai/gpt-5.2
 opencode-multi-model close my-session
 ```
 
+**Cleanup archive tags (CLI command):**
+```bash
+# Delete all archive tags from local and remote repositories
+opencode-multi-model cleanup
+
+# Delete all archive tags without confirmation prompts
+opencode-multi-model cleanup --force
+
+# Delete only local archive tags, skip remote deletion
+opencode-multi-model cleanup --no-remote
+
+# Delete archive tags and push deletions to a specific remote
+opencode-multi-model cleanup --remote origin
+```
+
 **Close a session (manual command):**
 ```bash
 tmux kill-session -t my-session && rm -rf ~/.local/share/opencode/multi-model/my-session && git worktree prune && git branch -D $(git branch --format='%(refname:short)' --list 'opencode/my-session/*')
@@ -98,6 +118,7 @@ tmux kill-session -t my-session && rm -rf ~/.local/share/opencode/multi-model/my
 opencode-multi-model --help
 opencode-multi-model open --help
 opencode-multi-model close --help
+opencode-multi-model cleanup --help
 ```
 
 ## Configuration
@@ -151,6 +172,21 @@ opencode-multi-model close <session-name> [options]
 | `--no-tags` | Do not create archive tags before deleting branches |
 | `-f, --force` | Skip confirmation prompts |
 
+### `cleanup` - Delete all archive tags from local and remote repositories
+
+Archive tags have the format: `archive/<branch-name>-<timestamp>`. These are created by the close command to preserve branch state before deletion.
+
+```bash
+opencode-multi-model cleanup [options]
+```
+
+**Options:**
+| Option | Description |
+|--------|-------------|
+| `-f, --force` | Skip confirmation prompts |
+| `-r, --remote <remote>` | Remote name to push deletions to (default: first remote from git remote -v) |
+| `--no-remote` | Only delete local tags, skip remote |
+
 ### Global Options
 
 | Option | Description |
@@ -191,6 +227,20 @@ The `close` command performs the following steps:
 
 4. **Directory cleanup**: Removes the base session directory
 
+### `cleanup` command
+
+The `cleanup` command performs the following steps:
+
+1. **Archive tag discovery**: Finds all git tags matching the pattern `archive/*`
+
+2. **Local tag deletion**: Deletes all archive tags from the local repository
+
+3. **Remote tag deletion** (unless `--no-remote`):
+   - Determines which remote to use (user-specified, first available, or skip)
+   - Pushes tag deletions to the remote repository
+
+4. **Summary**: Reports the number of tags deleted locally and remotely
+
 ## Requirements
 
 - tmux
@@ -231,10 +281,12 @@ bun dist/cli.js close test-session
 │   │   ├── index.ts           # Core exports
 │   │   ├── open.ts            # Launch session logic
 │   │   ├── close.ts            # Close session logic
+│   │   ├── cleanup.ts         # Cleanup archive tags logic
 │   │   └── utils.ts           # Helper functions
 │   └── tools/
 │       ├── open.ts            # Open tool definition
-│       └── close.ts           # Close tool definition
+│       ├── close.ts            # Close tool definition
+│       └── cleanup.ts         # Cleanup tool definition
 ├── tests/
 │   └── multi-model.test.ts    # Tests
 ├── package.json

bun.lock

@@ -8,6 +8,7 @@
         "@opencode-ai/plugin": "^1.2.27",
         "chalk": "^5.3.0",
         "commander": "^12.0.0",
+        "ora": "^9.3.0",
       },
       "devDependencies": {
         "@biomejs/biome": "^2.4.8",
@@ -44,16 +45,48 @@
 
     "@types/node": ["@types/node@25.5.0", "", { "dependencies": { "undici-types": "~7.18.0" } }, "sha512-jp2P3tQMSxWugkCUKLRPVUpGaL5MVFwF8RDuSRztfwgN1wmqJeMSbKlnEtQqU8UrhTmzEmZdu2I6v2dpp7XIxw=="],
 
+    "ansi-regex": ["ansi-regex@6.2.2", "", {}, "sha512-Bq3SmSpyFHaWjPk8If9yc6svM8c56dB5BAtW4Qbw5jHTwwXXcTLoRMkpDJp6VL0XzlWaCHTXrkFURMYmD0sLqg=="],
+
     "bun-types": ["bun-types@1.3.11", "", { "dependencies": { "@types/node": "*" } }, "sha512-1KGPpoxQWl9f6wcZh57LvrPIInQMn2TQ7jsgxqpRzg+l0QPOFvJVH7HmvHo/AiPgwXy+/Thf6Ov3EdVn1vOabg=="],
 
     "chalk": ["chalk@5.6.2", "", {}, "sha512-7NzBL0rN6fMUW+f7A6Io4h40qQlG+xGmtMxfbnH/K7TAtt8JQWVQK+6g0UXKMeVJoyV5EkkNsErQ8pVD3bLHbA=="],
 
+    "cli-cursor": ["cli-cursor@5.0.0", "", { "dependencies": { "restore-cursor": "^5.0.0" } }, "sha512-aCj4O5wKyszjMmDT4tZj93kxyydN/K5zPWSCe6/0AV/AA1pqe5ZBIw0a2ZfPQV7lL5/yb5HsUreJ6UFAF1tEQw=="],
+
+    "cli-spinners": ["cli-spinners@3.4.0", "", {}, "sha512-bXfOC4QcT1tKXGorxL3wbJm6XJPDqEnij2gQ2m7ESQuE+/z9YFIWnl/5RpTiKWbMq3EVKR4fRLJGn6DVfu0mpw=="],
+
     "commander": ["commander@12.1.0", "", {}, "sha512-Vw8qHK3bZM9y/P10u3Vib8o/DdkvA2OtPtZvD871QKjy74Wj1WSKFILMPRPSdUSx5RFK1arlJzEtA4PkFgnbuA=="],
 
+    "get-east-asian-width": ["get-east-asian-width@1.5.0", "", {}, "sha512-CQ+bEO+Tva/qlmw24dCejulK5pMzVnUOFOijVogd3KQs07HnRIgp8TGipvCCRT06xeYEbpbgwaCxglFyiuIcmA=="],
+
+    "is-interactive": ["is-interactive@2.0.0", "", {}, "sha512-qP1vozQRI+BMOPcjFzrjXuQvdak2pHNUMZoeG2eRbiSqyvbEf/wQtEOTOX1guk6E3t36RkaqiSt8A/6YElNxLQ=="],
+
+    "is-unicode-supported": ["is-unicode-supported@2.1.0", "", {}, "sha512-mE00Gnza5EEB3Ds0HfMyllZzbBrmLOX3vfWoj9A9PEnTfratQ/BcaJOuMhnkhjXvb2+FkY3VuHqtAGpTPmglFQ=="],
+
+    "log-symbols": ["log-symbols@7.0.1", "", { "dependencies": { "is-unicode-supported": "^2.0.0", "yoctocolors": "^2.1.1" } }, "sha512-ja1E3yCr9i/0hmBVaM0bfwDjnGy8I/s6PP4DFp+yP+a+mrHO4Rm7DtmnqROTUkHIkqffC84YY7AeqX6oFk0WFg=="],
+
+    "mimic-function": ["mimic-function@5.0.1", "", {}, "sha512-VP79XUPxV2CigYP3jWwAUFSku2aKqBH7uTAapFWCBqutsbmDo96KY5o8uh6U+/YSIn5OxJnXp73beVkpqMIGhA=="],
+
+    "onetime": ["onetime@7.0.0", "", { "dependencies": { "mimic-function": "^5.0.0" } }, "sha512-VXJjc87FScF88uafS3JllDgvAm+c/Slfz06lorj2uAY34rlUu0Nt+v8wreiImcrgAjjIHp1rXpTDlLOGw29WwQ=="],
+
+    "ora": ["ora@9.3.0", "", { "dependencies": { "chalk": "^5.6.2", "cli-cursor": "^5.0.0", "cli-spinners": "^3.2.0", "is-interactive": "^2.0.0", "is-unicode-supported": "^2.1.0", "log-symbols": "^7.0.1", "stdin-discarder": "^0.3.1", "string-width": "^8.1.0" } }, "sha512-lBX72MWFduWEf7v7uWf5DHp9Jn5BI8bNPGuFgtXMmr2uDz2Gz2749y3am3agSDdkhHPHYmmxEGSKH85ZLGzgXw=="],
+
+    "restore-cursor": ["restore-cursor@5.1.0", "", { "dependencies": { "onetime": "^7.0.0", "signal-exit": "^4.1.0" } }, "sha512-oMA2dcrw6u0YfxJQXm342bFKX/E4sG9rbTzO9ptUcR/e8A33cHuvStiYOwH7fszkZlZ1z/ta9AAoPk2F4qIOHA=="],
+
+    "signal-exit": ["signal-exit@4.1.0", "", {}, "sha512-bzyZ1e88w9O1iNJbKnOlvYTrWPDl46O1bG0D3XInv+9tkPrxrN8jUUTiFlDkkmKWgn1M6CfIA13SuGqOa9Korw=="],
+
+    "stdin-discarder": ["stdin-discarder@0.3.1", "", {}, "sha512-reExS1kSGoElkextOcPkel4NE99S0BWxjUHQeDFnR8S993JxpPX7KU4MNmO19NXhlJp+8dmdCbKQVNgLJh2teA=="],
+
+    "string-width": ["string-width@8.2.0", "", { "dependencies": { "get-east-asian-width": "^1.5.0", "strip-ansi": "^7.1.2" } }, "sha512-6hJPQ8N0V0P3SNmP6h2J99RLuzrWz2gvT7VnK5tKvrNqJoyS9W4/Fb8mo31UiPvy00z7DQXkP2hnKBVav76thw=="],
+
+    "strip-ansi": ["strip-ansi@7.2.0", "", { "dependencies": { "ansi-regex": "^6.2.2" } }, "sha512-yDPMNjp4WyfYBkHnjIRLfca1i6KMyGCtsVgoKe/z1+6vukgaENdgGBZt+ZmKPc4gavvEZ5OgHfHdrazhgNyG7w=="],
+
     "typescript": ["typescript@5.9.3", "", { "bin": { "tsc": "bin/tsc", "tsserver": "bin/tsserver" } }, "sha512-jl1vZzPDinLr9eUt3J/t7V6FgNEw9QjvBPdysz9KfQDD41fQrC2Y4vKQdiaUpFT4bXlb1RHhLpp8wtm6M5TgSw=="],
 
     "undici-types": ["undici-types@7.18.2", "", {}, "sha512-AsuCzffGHJybSaRrmr5eHr81mwJU3kjw6M+uprWvCXiNeN9SOGwQ3Jn8jb8m3Z6izVgknn1R0FTCEAP2QrLY/w=="],
 
+    "yoctocolors": ["yoctocolors@2.1.2", "", {}, "sha512-CzhO+pFNo8ajLM2d2IW/R93ipy99LWjtwblvC1RsoSUMZgyLbYFr221TnSNT7GjGdYui6P459mw9JH/g/zW2ug=="],
+
     "zod": ["zod@4.1.8", "", {}, "sha512-5R1P+WwQqmmMIEACyzSvo4JXHY5WiAFHRMg+zBZKgKS+Q1viRa0C1hmUKtHltoIFKtIdki3pRxkmpP74jnNYHQ=="],
   }
 }

package.json

@@ -1,6 +1,6 @@
 {
   "name": "opencode-multi-model",
-  "version": "0.0.10",
+  "version": "0.2.1",
   "description": "Launch multiple AI models in tmux sessions - OpenCode Plugin, CLI, and Project Tool",
   "type": "module",
   "main": "./dist/index.js",
@@ -29,9 +29,10 @@
     "typecheck": "tsc --noEmit"
   },
   "dependencies": {
-    "chalk": "^5.3.0",
     "@opencode-ai/plugin": "^1.2.27",
-    "commander": "^12.0.0"
+    "chalk": "^5.3.0",
+    "commander": "^12.0.0",
+    "ora": "^9.3.0"
   },
   "devDependencies": {
     "@biomejs/biome": "^2.4.8",

src/cli.ts

@@ -1,16 +1,18 @@
 #!/usr/bin/env bun
 import { Command } from "commander";
+import pkg from "../package.json";
 import { cleanupMultiModel } from "./core/cleanup";
 import { closeMultiModel } from "./core/close";
 import { openMultiModel } from "./core/open";
-import { getBinaryName } from "./core/utils";
+import { getBinaryName, loadSettings, promptUser } from "./core/utils";
+import chalk from "chalk";
 
 const program = new Command();
 
 program
   .name("opencode-multi-model")
   .description("Launch multiple OpenCode models in tmux sessions")
-  .version("1.0.0");
+  .version(pkg.version);
 
 program
   .command("open")
@@ -25,19 +27,43 @@ program
     "-b, --binary <binary>",
     "Binary to use (opencode or kilo). Defaults to env var OPENCODE_MULTI_MODEL_BINARY or 'opencode'",
   )
+  .option("-f, --force", "Skip confirmation prompts", false)
   .action(
     async (
       sessionName: string,
-      options: { models: string[]; binary?: string },
+      options: { models: string[]; binary?: string; force: boolean },
     ) => {
       try {
+        let models = options.models;
+
+        if (models.length === 0) {
+          const settings = await loadSettings();
+          if (settings.lastModels.length > 0) {
+            if (!options.force) {
+              const modelList = settings.lastModels
+                .map((m) => `  - ${chalk.cyan(m)}`)
+                .join("\n");
+              const answer = await promptUser(
+                `Continue with last used models?\n${modelList}\n(Y/n): `,
+              );
+              if (answer.toLowerCase() === "y" || answer.toLowerCase() === "yes") {
+                models = settings.lastModels;
+
+              }
+            } else {
+              models = settings.lastModels;
+            }
+          }
+        }
+
         const binaryName = options.binary || getBinaryName();
 
         const result = await openMultiModel({
           sessionName,
-          models: options.models,
+          models,
           binaryName,
           mode: "cli",
+          saveToSettings: true,
         });
 
         if (result.success) {
@@ -77,6 +103,7 @@ program
           cleanupWorktrees: !options.keepWorktrees,
           force: options.force,
           createArchiveTags: options.tags,
+          mode: "cli",
         });
 
         if (result.success) {
@@ -106,6 +133,7 @@ program
       const result = await cleanupMultiModel({
         force: options.force,
         remote: options.remote === true ? undefined : options.remote,
+        mode: "cli",
       });
 
       if (result.success) {

src/core/cleanup.ts

@@ -1,23 +1,6 @@
-import * as readline from "node:readline";
 import chalk from "chalk";
 import type { CleanupOptions, CleanupResult } from "../types";
-import { runCommand } from "./utils";
+import { promptUser, runCommand } from "./utils";
-
-/**
- * Prompts the user for confirmation on the terminal.
- */
-async function promptUser(question: string): Promise<string> {
-  const rl = readline.createInterface({
-    input: process.stdin,
-    output: process.stdout,
-  });
-  return new Promise((resolve) => {
-    rl.question(question, (answer) => {
-      rl.close();
-      resolve(answer);
-    });
-  });
-}
 
 /**
  * Lists all archive tags matching the pattern archive/*.
@@ -38,8 +21,14 @@ export async function getAvailableRemotes(): Promise<string[]> {
 /**
  * Deletes a local git tag.
  */
-async function deleteLocalTag(tagName: string): Promise<boolean> {
+async function deleteLocalTag(
-  const result = await runCommand(["git", "tag", "-d", tagName]);
+  tagName: string,
+  mode?: "cli" | "tool",
+): Promise<boolean> {
+  const result = await runCommand(["git", "tag", "-d", tagName], {
+    mode,
+    spinnerMsg: `Deleting local tag ${tagName}...`,
+  });
   return result.ok;
 }
 
@@ -49,14 +38,15 @@ async function deleteLocalTag(tagName: string): Promise<boolean> {
 async function deleteRemoteTag(
   tagName: string,
   remoteName: string,
+  mode?: "cli" | "tool",
 ): Promise<{ ok: boolean; error: string }> {
-  const result = await runCommand([
+  const result = await runCommand(
-    "git",
+    ["git", "push", remoteName, "--delete", tagName],
-    "push",
+    {
-    remoteName,
+      mode,
-    "--delete",
+      spinnerMsg: `Deleting remote tag ${tagName} from ${remoteName}...`,
-    tagName,
+    },
-  ]);
+  );
   return {
     ok: result.ok,
     error: result.ok ? "" : result.stderr,
@@ -73,9 +63,9 @@ async function deleteRemoteTag(
  * @returns Result with counts and details of deleted tags.
  */
 export async function cleanupMultiModel(
-  options: CleanupOptions = {},
+  options: CleanupOptions,
 ): Promise<CleanupResult> {
-  const { force = false, remote } = options;
+  const { force = false, remote, mode } = options;
 
   // Get available remotes and archive tags first
   const availableRemotes = await getAvailableRemotes();
@@ -165,7 +155,7 @@ export async function cleanupMultiModel(
 
   // Delete local tags
   for (const tag of archiveTags) {
-    const deleted = await deleteLocalTag(tag);
+    const deleted = await deleteLocalTag(tag, mode);
     if (deleted) {
       localTagNames.push(tag);
     }
@@ -174,7 +164,7 @@ export async function cleanupMultiModel(
   // Delete from remote (if remote is specified and exists)
   if (shouldPushToRemote && remoteToDeleteFrom) {
     for (const tag of localTagNames) {
-      const result = await deleteRemoteTag(tag, remoteToDeleteFrom);
+      const result = await deleteRemoteTag(tag, remoteToDeleteFrom, mode);
       if (result.ok) {
         remoteTagNames.push(tag);
       } else {

src/core/close.ts

@@ -1,33 +1,13 @@
-import * as readline from "node:readline";
 import chalk from "chalk"; // removed console usage
 import type { CloseSessionOptions, CloseSessionResult } from "../types";
 import {
   getSessionPath,
   getWorktreesForSession,
+  promptUser,
   runCommand,
   sanitizeName,
 } from "./utils";
 
-/**
- * Prompts the user for input on the terminal.
- *
- * @param question The question to display.
- * @returns The user's answer.
- */
-async function promptUser(question: string): Promise<string> {
-  const rl = readline.createInterface({
-    input: process.stdin,
-    output: process.stdout,
-  });
-
-  return new Promise((resolve) => {
-    rl.question(question, (answer) => {
-      rl.close();
-      resolve(answer);
-    });
-  });
-}
-
 /**
  * Closes a multi-model tmux session and optionally cleans up worktrees and branches.
  *
@@ -56,6 +36,7 @@ export async function closeMultiModel(
   const instructionsArr: string[] = [];
   const branchesDeleted: string[] = [];
   const tagsCreated: string[] = [];
+  const mode = options.mode;
 
   const safeSessionName = sanitizeName(options.sessionName);
   try {
@@ -112,19 +93,20 @@ export async function closeMultiModel(
       for (const worktree of worktrees) {
         try {
           // Remove worktree
-          await runCommand(["git", "worktree", "remove", "-f", worktree.path]);
+          await runCommand(["git", "worktree", "remove", "-f", worktree.path], {
+            mode,
+            spinnerMsg: `Removing worktree ${worktree.path}...`,
+          });
           worktreesRemoved.push(worktree.path);
 
           // Optionally create an archive tag before deleting the branch for safe recovery
           if (options.createArchiveTags !== false) {
             const timestamp = new Date().toISOString().replace(/[:.]/g, "-");
             const archiveTag = `archive/${worktree.branch}-${timestamp}`;
-            const tagResult = await runCommand([
+            const tagResult = await runCommand(
-              "git",
+              ["git", "tag", archiveTag, worktree.branch],
-              "tag",
+              { mode, spinnerMsg: `Creating archive tag ${archiveTag}...` },
-              archiveTag,
+            );
-              worktree.branch,
-            ]);
 
             if (tagResult.ok) {
               tagsCreated.push(archiveTag);
@@ -136,7 +118,10 @@ export async function closeMultiModel(
             }
           }
 
-          await runCommand(["git", "branch", "-D", worktree.branch]);
+          await runCommand(["git", "branch", "-D", worktree.branch], {
+            mode,
+            spinnerMsg: `Deleting branch ${worktree.branch}...`,
+          });
           branchesDeleted.push(worktree.branch);
         } catch (err) {
           instructionsArr.push(

src/core/open.ts

@@ -10,6 +10,7 @@ import {
   normalizeModels,
   runCommand,
   sanitizeName,
+  saveSettings,
   undoWorktree,
 } from "./utils";
 
@@ -41,7 +42,7 @@ export async function openMultiModel(
   const safeSessionName = sanitizeName(sessionName);
   const models = normalizeModels(options.models);
   const binaryName = options.binaryName || "opencode";
-  const mode = options.mode || "cli";
+  const mode = options.mode;
 
   if (!sessionName) {
     return {
@@ -99,7 +100,10 @@ export async function openMultiModel(
     };
   }
 
-  const modelListResult = await runCommand([binaryName, "models"]);
+  const modelListResult = await runCommand([binaryName, "models"], {
+    mode,
+    spinnerMsg: `Fetching available models using \`${binaryName} models\`...`,
+  });
   if (!modelListResult.ok) {
     return {
       success: false,
@@ -184,14 +188,10 @@ export async function openMultiModel(
       }
     }
 
-    const worktreeResult = await runCommand([
+    const worktreeResult = await runCommand(
-      "git",
+      ["git", "worktree", "add", "-b", branchName, worktreePath],
-      "worktree",
+      { mode, spinnerMsg: `Creating worktree for ${plan.model}...` },
-      "add",
+    );
-      "-b",
-      branchName,
-      worktreePath,
-    ]);
     if (!worktreeResult.ok) {
       if (!isFirst) {
         failedModels.push(
@@ -208,7 +208,8 @@ export async function openMultiModel(
     }
 
     if (isFirst) {
-      const sessionCreateResult = await runCommand([
+      const sessionCreateResult = await runCommand(
+        [
           "tmux",
           "new-session",
           "-d",
@@ -218,7 +219,9 @@ export async function openMultiModel(
           plan.windowName,
           "-c",
           worktreePath,
-      ]);
+        ],
+        { mode, spinnerMsg: `Starting tmux session '${sessionName}'...` },
+      );
 
       if (!sessionCreateResult.ok) {
         const undoErrors = await undoWorktree(worktreePath, branchName);
@@ -229,7 +232,8 @@ export async function openMultiModel(
         return { success: false, sessionName, error: errorMsg };
       }
     } else {
-      const windowCreateResult = await runCommand([
+      const windowCreateResult = await runCommand(
+        [
           "tmux",
           "new-window",
           "-d",
@@ -239,7 +243,9 @@ export async function openMultiModel(
           plan.windowName,
           "-c",
           worktreePath,
-      ]);
+        ],
+        { mode, spinnerMsg: `Creating tmux window '${plan.windowName}'...` },
+      );
 
       if (!windowCreateResult.ok) {
         failedModels.push(
@@ -259,6 +265,7 @@ export async function openMultiModel(
       sessionName,
       plan,
       binaryName,
+      mode,
     );
     if (launchResult.ok) {
       succeededModels.push(plan.model);
@@ -307,6 +314,10 @@ export async function openMultiModel(
     };
   }
 
+  if (options.saveToSettings) {
+    await saveSettings({ lastModels: models });
+  }
+
   return {
     success: true,
     sessionName,

src/core/utils.ts

@@ -1,6 +1,17 @@
+import * as fs from "node:fs";
 import * as os from "node:os";
 import * as path from "node:path";
-import type { CommandResult, WindowLaunchPlan, WorktreeInfo } from "../types";
+import * as readline from "node:readline";
+import ora, { type Ora } from "ora";
+import type {
+  CommandResult,
+  MultiModelSettings,
+  RunCommandOptions,
+  WindowLaunchPlan,
+  WorktreeInfo,
+} from "../types";
+
+let sharedSpinner: Ora | undefined;
 
 const MAX_SUGGESTIONS = 3;
 const WINDOW_NAME_LIMIT = 24;
@@ -9,6 +20,7 @@ const WINDOW_NAME_LIMIT = 24;
  * Runs a command and captures its output without throwing on non-zero exit codes.
  *
  * @param parts Command segments to pass to the shell.
+ * @param options Additional options for running the command (e.g., mode, spinnerMsg).
  * @returns The exit status plus captured stdout and stderr.
  *
  * @example
@@ -19,9 +31,32 @@ const WINDOW_NAME_LIMIT = 24;
  * }
  * ```
  */
-export async function runCommand(parts: string[]): Promise<CommandResult> {
+export async function runCommand(
+  parts: string[],
+  options?: RunCommandOptions,
+): Promise<CommandResult> {
+  let spinner: Ora | undefined;
+  const isTest =
+    process.env.NODE_ENV === "test" || process.env.BUN_ENV === "test";
+  if (options?.mode === "cli" && !isTest) {
+    const msg = options.spinnerMsg || `Running ${parts[0]}...`;
+    if (!sharedSpinner) {
+      sharedSpinner = ora(msg).start();
+    } else {
+      sharedSpinner.text = msg;
+      if (!sharedSpinner.isSpinning) {
+        sharedSpinner.start();
+      }
+    }
+    spinner = sharedSpinner;
+  }
+
   const result = await Bun.$`${parts}`.quiet().nothrow();
 
+  if (spinner) {
+    spinner.stop().clear();
+  }
+
   return {
     ok: result.exitCode === 0,
     stdout: result.stdout.toString().trim(),
@@ -274,17 +309,21 @@ export async function launchModelInWindow(
   sessionName: string,
   plan: WindowLaunchPlan,
   binaryName: string = "opencode",
+  mode?: "cli" | "tool",
 ): Promise<CommandResult> {
   const launchCommand = `${binaryName} --model ${shellQuote(plan.model)}`;
 
-  return runCommand([
+  return runCommand(
+    [
       "tmux",
       "send-keys",
       "-t",
       `${sessionName}:${plan.windowName}`,
       launchCommand,
       "C-m",
-  ]);
+    ],
+    { mode, spinnerMsg: `Launching model ${plan.model}...` },
+  );
 }
 
 /**
@@ -453,3 +492,49 @@ export async function undoWorktree(
 export function getBinaryName(): string {
   return process.env.OPENCODE_MULTI_MODEL_BINARY || "opencode";
 }
+
+export function getSettingsPath(): string {
+  const homedir = os.homedir();
+  return path.join(homedir, ".config", "opencode-multi-model", "settings.json");
+}
+
+export async function loadSettings(): Promise<MultiModelSettings> {
+  const settingsPath = getSettingsPath();
+  try {
+    const content = await fs.promises.readFile(settingsPath, "utf-8");
+    const parsed = JSON.parse(content) as MultiModelSettings;
+    if (!Array.isArray(parsed.lastModels)) {
+      return { lastModels: [] };
+    }
+    return parsed;
+  } catch {
+    return { lastModels: [] };
+  }
+}
+
+export async function saveSettings(
+  settings: MultiModelSettings,
+): Promise<void> {
+  const settingsPath = getSettingsPath();
+  const dir = path.dirname(settingsPath);
+  await fs.promises.mkdir(dir, { recursive: true });
+  await fs.promises.writeFile(
+    settingsPath,
+    JSON.stringify(settings, null, 2),
+    "utf-8",
+  );
+}
+
+export async function promptUser(question: string): Promise<string> {
+  const rl = readline.createInterface({
+    input: process.stdin,
+    output: process.stdout,
+  });
+
+  return new Promise((resolve) => {
+    rl.question(question, (answer) => {
+      rl.close();
+      resolve(answer);
+    });
+  });
+}

src/index.ts

@@ -30,6 +30,3 @@ const OpenCodeMultiModelPlugin: Plugin = async (_ctx) => {
 };
 
 export default OpenCodeMultiModelPlugin;
-export * from "./core/index";
-export * from "./types";
-export { cleanupTool, closeTool, openTool };

src/tools/cleanup.ts

@@ -8,30 +8,30 @@ import { cleanupMultiModel } from "../core/cleanup";
  * Used to clean up recovery tags created by the close command.
  */
 export const cleanupTool = tool({
-  description:
+  description: `Delete all archive tags from the local repository and, optionally, from a remote.
-    "Delete all archive tags from local and optionally remote repository",
+
+Arguments:
+-\`remote\` (string, optional): Specify a remote name to which deletions should be pushed. If omitted, the first available remote is used.
+- \`noRemote\` (boolean, optional): When true, only delete local tags and do not push deletions to any remote.`,
   args: {
     remote: tool.schema
-      .union([
-        tool.schema
       .string()
-          .describe(
-            "Remote name to push deletions to. Error if doesn't exist.",
-          ),
-        tool.schema
-          .literal(false)
-          .describe("Only delete local tags, don't push to remote."),
-      ])
       .optional()
       .describe(
-        "Remote handling: string=specific remote, false=local-only, undefined=first available remote",
+        "Remote handling: string=specific remote, undefined=first available remote",
       ),
+    noRemote: tool.schema
+      .boolean()
+      .default(false)
+      .describe("Only delete local tags, don't push to remote.")
+      .optional(),
   },
   async execute(args, _context) {
     // In plugin mode, we skip confirmation (force=true)
     const result = await cleanupMultiModel({
       force: true,
-      remote: args.remote,
+      remote: args.noRemote ? false : args.remote,
+      mode: "tool",
     });
 
     if (!result.success) {

src/tools/close.ts

@@ -8,8 +8,12 @@ import { closeMultiModel } from "../core/close";
  * creates archive tags, and deletes associated branches.
  */
 export const closeTool = tool({
-  description:
+  description: `Close a multi-model tmux session and optionally clean up worktrees and branches.
-    "Close a multi-model tmux session and optionally cleanup worktrees and branches",
+
+Arguments:
+- \`sessionName\` (string, required): tmux session name to close.
+- \`cleanupWorktrees\` (boolean, optional, default: true): Whether to remove worktrees and delete branches.
+- \`createArchiveTags\` (boolean, optional, default: true): Whether to create archive tags before deleting branches.`,
   args: {
     sessionName: tool.schema
       .string()
@@ -35,6 +39,7 @@ export const closeTool = tool({
       cleanupWorktrees: args.cleanupWorktrees,
       createArchiveTags: args.createArchiveTags,
       force: true,
+      mode: "tool",
     });
 
     if (!result.success) {

src/tools/open.ts

@@ -9,7 +9,11 @@ import { getBinaryName } from "../core/utils";
  * Returns instructions for attaching to and cleaning up the session.
  */
 export const openTool = tool({
-  description: "Launch multiple OpenCode models in tmux",
+  description: `Launch multiple OpenCode models in tmux.
+
+Arguments:
+- \`sessionName\` (string, required): tmux session name to create.
+- \`models\` (array of strings, required): one or more OpenCode model IDs to launch.`,
   args: {
     sessionName: tool.schema
       .string()

src/types.ts

@@ -1,3 +1,10 @@
+/**
+ * Settings stored in ~/.config/opencode-multi-model/settings.json
+ */
+export interface MultiModelSettings {
+  lastModels: string[];
+}
+
 /**
  * Options for launching a multi-model tmux session.
  */
@@ -9,7 +16,9 @@ export interface MultiModelOptions {
   /** Binary name to use ('opencode' or 'kilo'). Defaults to 'opencode'. */
   binaryName?: string;
   /** Caller context: 'cli' shows shell commands, 'tool' shows tool instructions. */
-  mode?: "cli" | "tool";
+  mode: "cli" | "tool";
+  /** Save models to settings file on successful launch (CLI only). */
+  saveToSettings?: boolean;
 }
 
 /**
@@ -40,6 +49,8 @@ export interface CloseSessionOptions {
   cleanupWorktrees?: boolean;
   /** Skip confirmation prompts. */
   force?: boolean;
+  /** Caller context: 'cli' shows shell commands, 'tool' shows tool instructions. */
+  mode: "cli" | "tool";
 }
 
 /**
@@ -87,6 +98,8 @@ export interface CleanupOptions {
    * - If false: only local cleanup (--no-remote flag)
    */
   remote?: string | false;
+  /** Caller context: 'cli' shows shell commands, 'tool' shows tool instructions. */
+  mode: "cli" | "tool";
 }
 
 /**
@@ -125,6 +138,16 @@ export interface CommandResult {
   stderr: string;
 }
 
+/**
+ * Options for running a shell command.
+ */
+export interface RunCommandOptions {
+  /** Caller context: 'cli' shows spinner, 'tool' does not. */
+  mode?: "cli" | "tool";
+  /** Message to display in the spinner while the command runs. */
+  spinnerMsg?: string;
+}
+
 /**
  * Information about a git worktree.
  */

tests/cleanup.test.ts

@@ -70,7 +70,7 @@ describe("cleanupMultiModel", () => {
       stderr: "",
     };
 
-    const result = await cleanupMultiModel({ force: true });
+    const result = await cleanupMultiModel({ mode: "cli", force: true });
 
     expect(result.success).toBe(true);
     expect(result.localTagsDeleted).toBe(0);
@@ -96,7 +96,7 @@ describe("cleanupMultiModel", () => {
     } as any;
     spyOn(readline, "createInterface").mockImplementation(() => mockInterface);
 
-    const result = await cleanupMultiModel({ force: false });
+    const result = await cleanupMultiModel({ mode: "cli", force: false });
 
     expect(result.success).toBe(false);
     expect(result.error).toBe("Cleanup cancelled by user");
@@ -126,7 +126,7 @@ describe("cleanupMultiModel", () => {
       stderr: "",
     };
 
-    const result = await cleanupMultiModel({ force: true });
+    const result = await cleanupMultiModel({ mode: "cli", force: true });
 
     expect(result.success).toBe(true);
     expect(result.localTagsDeleted).toBe(1);
@@ -150,7 +150,11 @@ describe("cleanupMultiModel", () => {
       stderr: "",
     };
 
-    const result = await cleanupMultiModel({ force: true, remote: false });
+    const result = await cleanupMultiModel({
+      mode: "cli",
+      force: true,
+      remote: false,
+    });
 
     expect(result.success).toBe(true);
     expect(result.localTagsDeleted).toBe(1);
@@ -191,7 +195,7 @@ describe("cleanupMultiModel", () => {
       stderr: "",
     };
 
-    const result = await cleanupMultiModel({ force: true });
+    const result = await cleanupMultiModel({ mode: "cli", force: true });
 
     expect(result.success).toBe(true);
     expect(result.localTagsDeleted).toBe(2);
@@ -222,7 +226,11 @@ describe("cleanupMultiModel", () => {
       stderr: "",
     };
 
-    const result = await cleanupMultiModel({ force: true, remote: undefined });
+    const result = await cleanupMultiModel({
+      mode: "cli",
+      force: true,
+      remote: undefined,
+    });
 
     expect(result.success).toBe(true);
     expect(executedCommands).toContain(
@@ -253,6 +261,7 @@ describe("cleanupMultiModel", () => {
     };
 
     const result = await cleanupMultiModel({
+      mode: "cli",
       force: true,
       remote: "upstream",
     });
@@ -277,6 +286,7 @@ describe("cleanupMultiModel", () => {
     };
 
     const result = await cleanupMultiModel({
+      mode: "cli",
       force: true,
       remote: "nonexistent",
     });
@@ -303,7 +313,7 @@ describe("cleanupMultiModel", () => {
       stderr: "",
     };
 
-    const result = await cleanupMultiModel({ force: true });
+    const result = await cleanupMultiModel({ mode: "cli", force: true });
 
     expect(result.success).toBe(true);
     expect(result.availableRemotes).toEqual([]);
@@ -339,7 +349,7 @@ describe("cleanupMultiModel", () => {
     } as any;
     spyOn(readline, "createInterface").mockImplementation(() => mockInterface);
 
-    const result = await cleanupMultiModel({ force: false });
+    const result = await cleanupMultiModel({ mode: "cli", force: false });
 
     expect(result.success).toBe(true);
     expect(result.localTagsDeleted).toBe(1);
@@ -392,7 +402,7 @@ describe("cleanupMultiModel", () => {
       stderr: "",
     };
 
-    const result = await cleanupMultiModel({ force: true });
+    const result = await cleanupMultiModel({ mode: "cli", force: true });
 
     expect(result.success).toBe(true);
     expect(result.localTagsDeleted).toBe(3);

tests/close.test.ts

@@ -79,6 +79,7 @@ describe("closeMultiModel", () => {
     };
 
     const result = await closeMultiModel({
+      mode: "cli",
       sessionName: "test-session",
       cleanupWorktrees: false,
       force: false,
@@ -103,6 +104,7 @@ describe("closeMultiModel", () => {
     };
 
     const result = await closeMultiModel({
+      mode: "cli",
       sessionName: "test-session",
       cleanupWorktrees: false,
       force: false,
@@ -161,6 +163,7 @@ describe("closeMultiModel", () => {
     } as any;
 
     const result = await closeMultiModel({
+      mode: "cli",
       sessionName: "test-session",
       cleanupWorktrees: true,
       force: true,
@@ -206,6 +209,7 @@ describe("closeMultiModel", () => {
     spyOn(readline, "createInterface").mockImplementation(() => mockInterface);
 
     const result = await closeMultiModel({
+      mode: "cli",
       sessionName: "test-session",
       cleanupWorktrees: true,
       force: false,
@@ -251,6 +255,7 @@ describe("closeMultiModel", () => {
     } as any;
 
     const result = await closeMultiModel({
+      mode: "cli",
       sessionName: "test-session",
       cleanupWorktrees: true,
       force: false,
@@ -322,6 +327,7 @@ describe("closeMultiModel", () => {
     };
 
     const result = await closeMultiModel({
+      mode: "cli",
       sessionName: "test-session",
       cleanupWorktrees: true,
       force: true,
@@ -380,6 +386,7 @@ describe("closeMultiModel", () => {
     } as any;
 
     const result = await closeMultiModel({
+      mode: "cli",
       sessionName: unsanitized,
       cleanupWorktrees: true,
       force: true,
@@ -422,6 +429,7 @@ describe("closeMultiModel", () => {
     };
 
     const result = await closeMultiModel({
+      mode: "cli",
       sessionName: unsanitized,
       cleanupWorktrees: false,
       force: false,
@@ -465,6 +473,7 @@ describe("closeMultiModel", () => {
     ] = { ok: true, stdout: "", stderr: "" };
 
     const result = await closeMultiModel({
+      mode: "cli",
       sessionName: "test-session",
       cleanupWorktrees: true,
       force: true,

tests/close_error.test.ts

@@ -62,6 +62,7 @@ describe("closeMultiModel unexpected error handling", () => {
 
   test("catches thrown error and returns failure", async () => {
     const result = await closeMultiModel({
+      mode: "cli",
       sessionName: "any-session",
       cleanupWorktrees: false,
       force: false,

tests/open.test.ts

@@ -94,6 +94,7 @@ describe("multi-model launch", () => {
 
   test("fails if session name is empty", async () => {
     const result = await openMultiModel({
+      mode: "cli",
       sessionName: "",
       models: ["openai/gpt-5.2"],
     });
@@ -105,6 +106,7 @@ describe("multi-model launch", () => {
 
   test("fails if no models are provided", async () => {
     const result = await openMultiModel({
+      mode: "cli",
       sessionName: "test-session",
       models: [],
     });
@@ -116,6 +118,7 @@ describe("multi-model launch", () => {
 
   test("fails if duplicate models are provided", async () => {
     const result = await openMultiModel({
+      mode: "cli",
       sessionName: "test-session",
       models: ["openai/gpt-5.2", "openai/gpt-5.2"],
     });
@@ -133,6 +136,7 @@ describe("multi-model launch", () => {
     };
 
     const result = await openMultiModel({
+      mode: "cli",
       sessionName: "test-session",
       models: ["openai/gpt-5.2"],
     });
@@ -152,6 +156,7 @@ describe("multi-model launch", () => {
     };
 
     const result = await openMultiModel({
+      mode: "cli",
       sessionName: "test-session",
       models: ["openai/gpt-5.2"],
     });
@@ -174,6 +179,7 @@ describe("multi-model launch", () => {
     };
 
     const result = await openMultiModel({
+      mode: "cli",
       sessionName: "test-session",
       models: ["openai/gpt-5.2"],
     });
@@ -191,6 +197,7 @@ describe("multi-model launch", () => {
 
   test("fails if model name is not in allowlist", async () => {
     const result = await openMultiModel({
+      mode: "cli",
       sessionName: "test-session",
       models: ["invalid/model"],
     });
@@ -215,6 +222,7 @@ describe("multi-model launch", () => {
     };
 
     const result = await openMultiModel({
+      mode: "cli",
       sessionName: "test-session",
       models: ["openai/gpt-5.2"],
     });
@@ -232,6 +240,7 @@ describe("multi-model launch", () => {
 
   test("successfully plans and executes tmux launch with single model", async () => {
     const result = await openMultiModel({
+      mode: "cli",
       sessionName: "test-session",
       models: ["openai/gpt-5.2"],
     });
@@ -258,6 +267,7 @@ describe("multi-model launch", () => {
     ] = { ok: false, stdout: "", stderr: "" };
 
     const result = await openMultiModel({
+      mode: "cli",
       sessionName: "test-session",
       models: ["openai/gpt-5.2", "anthropic/claude-3-5-sonnet"],
     });
@@ -289,6 +299,7 @@ describe("multi-model launch", () => {
     ] = { ok: false, stdout: "", stderr: "" };
 
     const result = await openMultiModel({
+      mode: "cli",
       sessionName: "test session!",
       models: ["openai/gpt-5.2"],
     });
@@ -326,6 +337,7 @@ describe("multi-model launch", () => {
     ] = { ok: true, stdout: "", stderr: "" };
 
     const result = await openMultiModel({
+      mode: "cli",
       sessionName: unsanitized,
       models: ["openai/gpt-5.2"],
     });
@@ -373,6 +385,7 @@ describe("multi-model launch", () => {
     };
 
     const result = await openMultiModel({
+      mode: "cli",
       sessionName: "test-session",
       models: ["openai/gpt-5.2"],
     });
@@ -399,6 +412,7 @@ describe("multi-model launch", () => {
     });
 
     const result = await openMultiModel({
+      mode: "cli",
       sessionName: "test-session",
       models: ["openai/gpt-5.2"],
     });
@@ -420,6 +434,7 @@ describe("multi-model launch", () => {
     ] = { ok: true, stdout: "", stderr: "" };
 
     const result = await openMultiModel({
+      mode: "cli",
       sessionName: "test-session",
       models: ["openai/gpt-5.2"],
     });
@@ -444,6 +459,7 @@ describe("multi-model launch", () => {
     ] = { ok: false, stdout: "", stderr: "git error" };
 
     const result = await openMultiModel({
+      mode: "cli",
       sessionName: "test-session",
       models: ["openai/gpt-5.2"],
     });
@@ -475,6 +491,7 @@ describe("multi-model launch", () => {
     ] = { ok: false, stdout: "", stderr: "" };
 
     const result = await openMultiModel({
+      mode: "cli",
       sessionName: "test-session",
       models: ["openai/gpt-5.2", "anthropic/gpt-5.2"],
     });
@@ -507,6 +524,7 @@ describe("multi-model launch", () => {
     ] = { ok: false, stdout: "", stderr: "" };
 
     const result = await openMultiModel({
+      mode: "cli",
       sessionName: "test-session",
       models: [longModel],
     });
@@ -520,6 +538,34 @@ describe("multi-model launch", () => {
       ?.match(/-n (\S+)/)?.[1];
     expect(windowName?.length).toBeLessThanOrEqual(24);
   });
+
+  test("saves settings on successful launch when saveToSettings is true", async () => {
+    spyOn(fs.promises, "mkdir").mockResolvedValue(undefined);
+    spyOn(fs.promises, "writeFile").mockResolvedValue(undefined);
+
+    const result = await openMultiModel({
+      mode: "cli",
+      sessionName: "test-session",
+      models: ["openai/gpt-5.2"],
+      saveToSettings: true,
+    });
+
+    expect(result.success).toBe(true);
+  });
+
+  test("does not save settings when saveToSettings is false", async () => {
+    spyOn(fs.promises, "mkdir").mockResolvedValue(undefined);
+    spyOn(fs.promises, "writeFile").mockResolvedValue(undefined);
+
+    const result = await openMultiModel({
+      mode: "cli",
+      sessionName: "test-session",
+      models: ["openai/gpt-5.2"],
+      saveToSettings: false,
+    });
+
+    expect(result.success).toBe(true);
+  });
 });
 
 // ----------

tests/utils.test.ts

@@ -7,6 +7,7 @@ import {
   spyOn,
   test,
 } from "bun:test";
+import * as fs from "node:fs";
 import * as os from "node:os";
 import {
   createWindowBaseName,
@@ -15,13 +16,16 @@ import {
   formatInvalidModelError,
   getBinaryName,
   getSessionPath,
+  getSettingsPath,
   getWorktreePath,
   getWorktreesForSession,
   launchModelInWindow,
   levenshtein,
+  loadSettings,
   normalizeModels,
   runCommand,
   sanitizeName,
+  saveSettings,
   shellQuote,
   suggestModels,
   undoWorktree,
@@ -484,4 +488,86 @@ describe("core utils", () => {
       delete process.env.OPENCODE_MULTI_MODEL_BINARY;
     });
   });
+
+  describe("getSettingsPath", () => {
+    test("returns correct settings path", () => {
+      spyOn(os, "homedir").mockReturnValue("/home/user");
+      expect(getSettingsPath()).toBe(
+        "/home/user/.config/opencode-multi-model/settings.json",
+      );
+    });
+  });
+
+  describe("loadSettings", () => {
+    let readFileMock: ReturnType<typeof spyOn>;
+
+    beforeEach(() => {
+      spyOn(os, "homedir").mockReturnValue("/home/user");
+      readFileMock = spyOn(fs.promises, "readFile");
+    });
+
+    test("returns default settings when file does not exist", async () => {
+      readFileMock.mockRejectedValue(new Error("ENOENT"));
+      const result = await loadSettings();
+      expect(result).toEqual({ lastModels: [] });
+    });
+
+    test("returns default settings when file has invalid JSON", async () => {
+      readFileMock.mockResolvedValue("not valid json");
+      const result = await loadSettings();
+      expect(result).toEqual({ lastModels: [] });
+    });
+
+    test("returns default settings when lastModels is not an array", async () => {
+      readFileMock.mockResolvedValue(
+        JSON.stringify({ lastModels: "not array" }),
+      );
+      const result = await loadSettings();
+      expect(result).toEqual({ lastModels: [] });
+    });
+
+    test("parses valid settings file", async () => {
+      readFileMock.mockResolvedValue(
+        JSON.stringify({ lastModels: ["model1", "model2"] }),
+      );
+      const result = await loadSettings();
+      expect(result).toEqual({ lastModels: ["model1", "model2"] });
+    });
+  });
+
+  describe("saveSettings", () => {
+    let mkdirMock: ReturnType<typeof spyOn>;
+    let writeFileMock: ReturnType<typeof spyOn>;
+
+    beforeEach(() => {
+      spyOn(os, "homedir").mockReturnValue("/home/user");
+      mkdirMock = spyOn(fs.promises, "mkdir");
+      writeFileMock = spyOn(fs.promises, "writeFile");
+    });
+
+    test("creates directory if it does not exist", async () => {
+      mkdirMock.mockResolvedValue(undefined);
+      writeFileMock.mockResolvedValue(undefined);
+
+      await saveSettings({ lastModels: ["model1"] });
+
+      expect(mkdirMock).toHaveBeenCalledWith(
+        "/home/user/.config/opencode-multi-model",
+        { recursive: true },
+      );
+    });
+
+    test("writes settings with correct content", async () => {
+      mkdirMock.mockResolvedValue(undefined);
+      writeFileMock.mockResolvedValue(undefined);
+
+      await saveSettings({ lastModels: ["model1", "model2"] });
+
+      expect(writeFileMock).toHaveBeenCalledWith(
+        "/home/user/.config/opencode-multi-model/settings.json",
+        JSON.stringify({ lastModels: ["model1", "model2"] }, null, 2),
+        "utf-8",
+      );
+    });
+  });
 });

tsconfig.json

@@ -12,7 +12,9 @@
     "noFallthroughCasesInSwitch": true,
     "noUncheckedIndexedAccess": true,
     "noImplicitOverride": true,
-    "types": ["bun-types"]
+    "types": ["bun-types"],
+    "resolveJsonModule": true,
+    "esModuleInterop": true
   },
   "include": ["src/**/*", "tests/**/*"],
   "exclude": ["node_modules", "dist"]