feat(agentapi,claude-code): add web_app variable to disable the web app (#764)

Adds a `web_app` variable (default: `true`) to both the `claude-code`
and `agentapi` modules. When set to `false`, AgentAPI still runs but the
web UI app icon is not shown in the Coder dashboard.

This mirrors the existing `cli_app` toggle pattern.

## Changes

### `agentapi` module
- New `web_app` variable (bool, default `true`)
- `coder_app.agentapi_web` now has `count = local.web_app ? 1 : 0`
- **Task-safe:** `local.web_app` is computed as `var.web_app ||
local.is_task`, where `is_task = try(data.coder_task.me.enabled,
false)`. This means the web app is always created when the workspace is
a Task, regardless of the `web_app` variable.
- `task_app_id` output returns `""` when `local.web_app` is `false`

### `claude-code` module
- New `web_app` variable (bool, default `true`)
- `TODO` comment to wire `web_app` through to agentapi once published

## Usage (once fully wired)

```hcl
module "claude-code" {
  source  = "registry.coder.com/coder/claude-code/coder"
  ...
  web_app = false  # hides the Claude Code web UI from the dashboard
}
```

Setting `web_app = false` is safe even in templates that use
`coder_ai_task` — the module detects Tasks via
`data.coder_task.me.enabled` and automatically enables the web app.

## Merge strategy

This needs to land in two steps:
1. **Merge this PR** — publishes the agentapi module with `web_app`
support, and adds the `web_app` variable to claude-code (not yet wired
through)
2. **Follow-up PR** — bump the agentapi version in claude-code and
replace the `TODO` with `web_app = var.web_app`

---------

Co-authored-by: blink-so[bot] <211532188+blink-so[bot]@users.noreply.github.com>
Co-authored-by: DevCats <christofer@coder.com>

Author: 3 people

registry/coder/modules/agentapi/README.md

@@ -16,7 +16,7 @@ The AgentAPI module is a building block for modules that need to run an AgentAPI
 ```tf
 module "agentapi" {
   source  = "registry.coder.com/coder/agentapi/coder"
-  version = "2.3.0"
+  version = "2.4.0"
 
   agent_id             = var.agent_id
   web_app_slug         = local.app_slug

registry/coder/modules/agentapi/main.tf

@@ -53,6 +53,12 @@ variable "folder" {
   default     = "/home/coder"
 }
 
+variable "web_app" {
+  type        = bool
+  description = "Whether to create the web workspace app. This is automatically enabled when using Coder Tasks, regardless of this setting."
+  default     = true
+}
+
 variable "cli_app" {
   type        = bool
   description = "Whether to create the CLI workspace app."
@@ -220,6 +226,11 @@ resource "coder_env" "boundary_config" {
 }
 
 locals {
+  # If this is a Task, always create the web app regardless of var.web_app
+  # since coder_ai_task requires the app to function.
+  is_task = try(data.coder_task.me.enabled, false)
+  web_app = var.web_app || local.is_task
+
   # we always trim the slash for consistency
   workdir                            = trimsuffix(var.folder, "/")
   encoded_pre_install_script         = var.pre_install_script != null ? base64encode(var.pre_install_script) : ""
@@ -305,6 +316,8 @@ resource "coder_script" "agentapi_shutdown" {
 }
 
 resource "coder_app" "agentapi_web" {
+  count = local.web_app ? 1 : 0
+
   slug         = var.web_app_slug
   display_name = var.web_app_display_name
   agent_id     = var.agent_id
@@ -341,5 +354,5 @@ resource "coder_app" "agentapi_cli" {
 }
 
 output "task_app_id" {
-  value = coder_app.agentapi_web.id
+  value = local.web_app ? coder_app.agentapi_web[0].id : ""
 }

registry/coder/modules/claude-code/README.md

@@ -13,7 +13,7 @@ Run the [Claude Code](https://docs.anthropic.com/en/docs/agents-and-tools/claude
 ```tf
 module "claude-code" {
   source         = "registry.coder.com/coder/claude-code/coder"
-  version        = "4.8.2"
+  version        = "4.9.0"
   agent_id       = coder_agent.main.id
   workdir        = "/home/coder/project"
   claude_api_key = "xxxx-xxxxx-xxxx"
@@ -60,7 +60,7 @@ By default, when `enable_boundary = true`, the module uses `coder boundary` subc
 ```tf
 module "claude-code" {
   source          = "registry.coder.com/coder/claude-code/coder"
-  version         = "4.8.2"
+  version         = "4.9.0"
   agent_id        = coder_agent.main.id
   workdir         = "/home/coder/project"
   enable_boundary = true
@@ -81,7 +81,7 @@ For tasks integration with AI Bridge, add `enable_aibridge = true` to the [Usage
 ```tf
 module "claude-code" {
   source          = "registry.coder.com/coder/claude-code/coder"
-  version         = "4.8.2"
+  version         = "4.9.0"
   agent_id        = coder_agent.main.id
   workdir         = "/home/coder/project"
   enable_aibridge = true
@@ -110,7 +110,7 @@ data "coder_task" "me" {}
 
 module "claude-code" {
   source    = "registry.coder.com/coder/claude-code/coder"
-  version   = "4.8.2"
+  version   = "4.9.0"
   agent_id  = coder_agent.main.id
   workdir   = "/home/coder/project"
   ai_prompt = data.coder_task.me.prompt
@@ -133,7 +133,7 @@ This example shows additional configuration options for version pinning, custom
 ```tf
 module "claude-code" {
   source   = "registry.coder.com/coder/claude-code/coder"
-  version  = "4.8.2"
+  version  = "4.9.0"
   agent_id = coder_agent.main.id
   workdir  = "/home/coder/project"
 
@@ -189,7 +189,7 @@ Run and configure Claude Code as a standalone CLI in your workspace.
 ```tf
 module "claude-code" {
   source              = "registry.coder.com/coder/claude-code/coder"
-  version             = "4.8.2"
+  version             = "4.9.0"
   agent_id            = coder_agent.main.id
   workdir             = "/home/coder/project"
   install_claude_code = true
@@ -211,7 +211,7 @@ variable "claude_code_oauth_token" {
 
 module "claude-code" {
   source                  = "registry.coder.com/coder/claude-code/coder"
-  version                 = "4.8.2"
+  version                 = "4.9.0"
   agent_id                = coder_agent.main.id
   workdir                 = "/home/coder/project"
   claude_code_oauth_token = var.claude_code_oauth_token
@@ -284,7 +284,7 @@ resource "coder_env" "bedrock_api_key" {
 
 module "claude-code" {
   source   = "registry.coder.com/coder/claude-code/coder"
-  version  = "4.8.2"
+  version  = "4.9.0"
   agent_id = coder_agent.main.id
   workdir  = "/home/coder/project"
   model    = "global.anthropic.claude-sonnet-4-5-20250929-v1:0"
@@ -341,7 +341,7 @@ resource "coder_env" "google_application_credentials" {
 
 module "claude-code" {
   source   = "registry.coder.com/coder/claude-code/coder"
-  version  = "4.8.2"
+  version  = "4.9.0"
   agent_id = coder_agent.main.id
   workdir  = "/home/coder/project"
   model    = "claude-sonnet-4@20250514"

registry/coder/modules/claude-code/main.tf

@@ -47,6 +47,12 @@ variable "report_tasks" {
   default     = true
 }
 
+variable "web_app" {
+  type        = bool
+  description = "Whether to create the web app for Claude Code. When false, AgentAPI still runs but no web UI app icon is shown in the Coder dashboard. This is automatically enabled when using Coder Tasks, regardless of this setting."
+  default     = true
+}
+
 variable "cli_app" {
   type        = bool
   description = "Whether to create a CLI app for Claude Code"
@@ -362,9 +368,10 @@ locals {
 
 module "agentapi" {
   source  = "registry.coder.com/coder/agentapi/coder"
-  version = "2.2.0"
+  version = "2.3.0"
 
-  agent_id                 = var.agent_id
+  agent_id = var.agent_id
+  # TODO: pass web_app = var.web_app once agentapi module is published with web_app support
   web_app_slug             = local.app_slug
   web_app_order            = var.order
   web_app_group            = var.group