Revert "refactor(gemini): migrate to coder-utils and tftpl pattern"

This reverts commit 35c03a1.

Author: Jay Kumar

registry/coder-labs/modules/gemini/README.md

@@ -13,7 +13,7 @@ Run [Gemini CLI](https://github.com/google-gemini/gemini-cli) in your workspace
 ```tf
 module "gemini" {
   source   = "registry.coder.com/coder-labs/gemini/coder"
-  version  = "3.1.0"
+  version  = "3.0.0"
   agent_id = coder_agent.main.id
   folder   = "/home/coder/project"
 }
@@ -22,14 +22,15 @@ module "gemini" {
 ## Features
 
 - **Interactive AI Assistance**: Run Gemini CLI directly in your terminal for coding help
+- **Automated Task Execution**: Execute coding tasks automatically via AgentAPI integration
 - **Multiple AI Models**: Support for Gemini 2.5 Pro, Flash, and other Google AI models
 - **API Key Integration**: Seamless authentication with Gemini API
 - **MCP Server Integration**: Built-in Coder MCP server for task reporting
-- **Script Orchestration**: Uses coder-utils for reliable pre/install/post script ordering
+- **Persistent Sessions**: Maintain context across workspace sessions
 
 ## Prerequisites
 
-- **Node.js and npm must be sourced/available before the gemini module installs**; ensure they are installed in your workspace image or via earlier provisioning steps
+- **Node.js and npm must be sourced/available before the gemini module installs** - ensure they are installed in your workspace image or via earlier provisioning steps
 - The [Coder Login](https://registry.coder.com/modules/coder/coder-login) module is required
 
 ## Examples
@@ -45,7 +46,7 @@ variable "gemini_api_key" {
 
 module "gemini" {
   source         = "registry.coder.com/coder-labs/gemini/coder"
-  version        = "3.1.0"
+  version        = "3.0.0"
   agent_id       = coder_agent.main.id
   gemini_api_key = var.gemini_api_key
   folder         = "/home/coder/project"
@@ -93,11 +94,12 @@ data "coder_parameter" "ai_prompt" {
 module "gemini" {
   count                = data.coder_workspace.me.start_count
   source               = "registry.coder.com/coder-labs/gemini/coder"
-  version              = "3.1.0"
+  version              = "3.0.0"
   agent_id             = coder_agent.main.id
   gemini_api_key       = var.gemini_api_key
   gemini_model         = "gemini-2.5-flash"
   folder               = "/home/coder/project"
+  task_prompt          = data.coder_parameter.ai_prompt.value
   enable_yolo_mode     = true # Auto-approve all tool calls for automation
   gemini_system_prompt = <<-EOT
     You are a helpful coding assistant. Always explain your code changes clearly.
@@ -116,7 +118,7 @@ For enterprise users who prefer Google's Vertex AI platform:
 ```tf
 module "gemini" {
   source         = "registry.coder.com/coder-labs/gemini/coder"
-  version        = "3.1.0"
+  version        = "3.0.0"
   agent_id       = coder_agent.main.id
   gemini_api_key = var.gemini_api_key
   folder         = "/home/coder/project"
@@ -127,12 +129,13 @@ module "gemini" {
 ## Troubleshooting
 
 - If Gemini CLI is not found, ensure your API key is valid (`install_gemini` defaults to `true`)
-- Check logs in `~/.coder-modules/coder-labs/gemini/logs/` for install output
+- Check logs in `~/.gemini-module/` for install/start output
 - Use the `gemini_api_key` variable to avoid requiring Google sign-in
 
-The module creates log files in `~/.coder-modules/coder-labs/gemini/logs/` for debugging purposes.
+The module creates log files in the workspace's `~/.gemini-module` directory for debugging purposes.
 
 ## References
 
 - [Gemini CLI Documentation](https://github.com/google-gemini/gemini-cli/blob/main/docs/index.md)
+- [AgentAPI Documentation](https://github.com/coder/agentapi)
 - [Coder AI Agents Guide](https://coder.com/docs/ai-coder)