feat(claude-code): add web_app variable to disable the web app

[blinkagent]

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) — added for future use
• TODO comment to wire web_app through to agentapi once the agentapi module is published with web_app support

Usage (once fully wired)

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

[DevelopmentCats]

While this is technically possible to add. I think we may need a better solution for this since the tasks ui will not work unless the claude-code coder app is available in the workspace.

[matifali]

Can we just ignore this input in that case?

[blinkagent]

Not really — the coder_app "agentapi_web" resource that we need to conditionally create lives in this module (agentapi), so the variable needs to be here to control the count. The claude-code module just passes it through.

That said, as noted in the issue comment, this has a limitation: disabling the web app breaks Tasks (coder_ai_task) since it depends on the task_app_id output from this app. So this is only useful for non-Tasks use cases where someone wants claude-code running via CLI only without the web UI in the dashboard.

[matifali]

What I am saying is that we ignore the variable value in case it's a task. But I guess we don't know that yet.

[blinkagent]

Good call — we actually do know! The agentapi module already has data "coder_task" "me" {}. I've added a local that checks try(data.coder_task.me.enabled, false) and forces the web app on when it's a Task:

locals {
  is_task = try(data.coder_task.me.enabled, false)
  web_app = var.web_app || local.is_task
}

So now web_app = false is safe to use — it'll be ignored when the workspace is a Task.