[BUG] File changes in multi-stack subdirectory repositories not detected in session (Maven backend, Node frontend, H5 external, Mini WeChat)

Description

When working in a parent directory containing multiple independent repositories with different technology stacks (Maven backend, Node.js frontend, H5 external browser app, WeChat Mini Program), file modifications within these subdirectory repositories are not detected or displayed in OpenCode session conversations.

Project structure example:

my-project-root/
├── backend/                    (Maven/Java project)
│   ├── pom.xml
│   ├── src/
│   │   ├── main/
│   │   └── test/
│   └── .git (or no git)
│
├── frontend/                   (Node.js/React/Vue project)
│   ├── package.json
│   ├── src/
│   │   ├── components/
│   │   └── pages/
│   └── .git (or no git)
│
├── h5-external/                (H5 application)
│   ├── package.json
│   ├── public/
│   └── src/
│       └── views/
│
└── mini-wechat/                (WeChat Mini Program)
    ├── app.json
    ├── pages/
    └── components/

When a session is opened pointing to my-project-root/, and files are modified in any of these subdirectories (e.g., backend/src/main/java/App.java, frontend/src/App.tsx, h5-external/src/index.html, or mini-wechat/pages/index.wxml), these changes are NOT reflected or detected in the OpenCode session conversation.

The issue manifests as:

• File monitor fails to detect changes across different technology stacks
• Session does not show awareness of file modifications in subdirectories
• Users cannot see or reference changes made in backend, frontend, H5, or Mini programs in the same conversation context
• This breaks cross-stack development workflows where a single session should coordinate work across multiple repositories

Plugins

No response

OpenCode version

1.18.13

Steps to reproduce

1. Create or clone a project with multiple subdirectories containing different technology stacks:

   • backend/ with Maven (Java) project structure (pom.xml, src/ directory)
   • frontend/ with Node.js (React/Vue/etc) project structure (package.json, src/ directory)
   • h5-external/ with H5 application (package.json or plain HTML/JS)
   • mini-wechat/ with WeChat Mini Program (app.json, pages/, components/)

2. Open OpenCode and point to the parent project root directory

3. Start a new OpenCode session at the root level

4. Modify files in different subdirectories:

   • Edit backend/src/main/java/App.java (or any Java file)
   • Edit frontend/src/App.tsx or frontend/src/index.js
   • Edit h5-external/src/index.html or h5-external/src/App.vue
   • Edit mini-wechat/pages/index.wxml or mini-wechat/app.json
   • Save these changes to disk

5. Switch back to OpenCode and check if file changes are reflected in the session

6. Try to reference or ask about these modified files in the conversation

Expected behavior:

• OpenCode file monitor should detect changes in all subdirectory repositories regardless of their technology stack
• Session should be aware of file modifications across backend/, frontend/, h5-external/, and mini-wechat/ directories
• User should be able to reference and discuss these changes in the conversation
• All subdirectory repositories should be indexable and searchable in the session context

Actual behavior:

• File changes in subdirectory repositories are NOT detected
• Session remains unaware of modifications in backend/, frontend/, h5-external/, or mini-wechat/
• No indication in file tree or conversation that these files have been modified
• When requesting analysis or explanation of code changes, OpenCode cannot see the modifications from subdirectories

Screenshot and/or share link

No response

Operating System

No response

Terminal

No response