feat: add multi-project support (#110)

* feat: Implement project management store with project path validation and synchronization

- Added `useProjectsStore` for managing projects, including adding, removing, renaming, and validating project paths.
- Implemented persistence for projects and active project ID using safe storage.
- Introduced synchronization from desktop settings to keep project data consistent.
- Enhanced session store to manage sessions by directory and added new methods for session management.
- Updated todo store to fetch session todos based on the directory context.
- Refactored server code to validate and resolve project directories for various API endpoints.
- Added project entry validation and sanitization to ensure data integrity.

* feat(settings): migrate legacy project settings and update settings loading logic

* feat: enhance project management with directory-aware settings and improved agent/command source handling

* feat: enhance session and project management with directory-aware settings and improved configuration refresh logic

* feat: enhance project management with worktree manager integration and project directory resolution

* feat: enhance agent groups store with project directory resolution and loading logic

* feat: add heartbeat management and global wrapping for SSE blocks in agent and chat providers

* feat: refactor command and project handling in useCommandsStore

- Replaced useDirectoryStore with useProjectsStore to manage project paths.
- Introduced getRequestDirectory function to determine the active project directory.
- Updated command fetching to respect project-level scoping.
- Enhanced error handling and logging for command configuration fetching.
- Improved command configuration saving and updating to utilize project directory context.

feat: enhance project path normalization in useProjectsStore

- Added resolveTildePath function to expand paths starting with ~.
- Updated normalizeProjectPath to utilize home directory for path expansion.

fix: update permission handling in useSessionStore

- Changed Permission type to PermissionRequest for clarity.
- Updated respondToPermission method to use requestId instead of permissionId.

refactor: improve permission utilities

- Introduced types for PermissionAction and PermissionRule.
- Enhanced getAgentDefinition and resolveConfigStore functions for better type safety.
- Added resolvePermissionAction to streamline permission resolution logic.

feat: add agent configuration retrieval endpoint

- Implemented new API endpoint to fetch agent configuration based on project directory.
- Enhanced getAgentPermissionSource to prioritize project-level permissions.

chore: update SDK version in package.json files

- Bumped @opencode-ai/sdk version to ^1.1.1 across all relevant package.json files.

refactor: streamline bridge message handling

- Updated handleBridgeMessage to accept directory parameter for agent and command requests.
- Improved local API request handling to extract directory from query parameters and headers.

feat: enhance project configuration management

- Added functions to retrieve and merge project configuration paths.
- Improved handling of existing project configuration files for agents and commands.

* feat: enhance VSCode integration and session management

- Added support for a sticky sidebar header background in light and dark themes.
- Introduced functions to read VSCode workspace directory and check if running in VSCode.
- Implemented detailed logging for session loading and creation processes.
- Enhanced session filtering based on directory structure and canonical paths.
- Added a new method to reorder projects and prevent modifications in VSCode workspace.
- Improved error handling and logging for app initialization and markdown file parsing.
- Updated API checks and health checks to ensure readiness before proceeding.
- Refactored code for better readability and maintainability across various modules.

* feat: improve agent and branch selection logic, enhance session management, and update multi-run creation response

* feat: add worktree management actions in agent group detail and sidebar, including delete and keep only options

* fix(ui): share IME guard and cover multi-run

* fix(session): reduce maximum visible sessions in group from 7 to 5

packages/desktop/src-tauri/src/opencode_config.rs

@@ -105,9 +105,30 @@ fn get_config_file() -> PathBuf {
     get_config_dir().join("opencode.json")
 }
 
-/// Get project config file path
+/// Get all possible project config paths in priority order
+/// Priority: root > .opencode/, json > jsonc
+fn get_project_config_candidates(working_directory: &Path) -> Vec<PathBuf> {
+    vec![
+        working_directory.join("opencode.json"),
+        working_directory.join("opencode.jsonc"),
+        working_directory.join(".opencode").join("opencode.json"),
+        working_directory.join(".opencode").join("opencode.jsonc"),
+    ]
+}
+
+/// Find existing project config file or return default path for new config
 fn get_project_config_file(working_directory: &Path) -> PathBuf {
-    working_directory.join("opencode.json")
+    let candidates = get_project_config_candidates(working_directory);
+
+    // Return first existing config file
+    for candidate in &candidates {
+        if candidate.exists() {
+            return candidate.clone();
+        }
+    }
+
+    // Default to root opencode.json for new configs
+    candidates.into_iter().next().unwrap_or_else(|| working_directory.join("opencode.json"))
 }
 
 /// Get custom config file path from OPENCODE_CONFIG env var
@@ -165,7 +186,9 @@ async fn read_config_file(path: &Path) -> Result<Value> {
         return Ok(Value::Object(serde_json::Map::new()));
     }
 
-    serde_json::from_str(&normalized).map_err(|e| anyhow!("Failed to parse config: {}", e))
+    serde_json::from_str(&normalized)
+        .or_else(|_| json5::from_str::<serde_json::Value>(&normalized))
+        .map_err(|e| anyhow!("Failed to parse config: {}", e))
 }
 
 async fn read_config_layers(working_directory: Option<&Path>) -> Result<ConfigLayers> {