Configurable location for OpenCode: sidebar or main window

openspec/changes/archive/add-default-view-location/specs/001-mvp-opencode-embed/spec.md

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+## MODIFIED Requirements
+
+### Requirement: Settings Configuration
+The plugin SHALL provide configurable settings for server port, hostname, executable path, project directory, auto-start behavior, and default view location.
+
+#### Scenario: Settings persistence
+- **WHEN** the user modifies settings
+- **THEN** changes are persisted to plugin data
+- **AND** the process manager is updated with new settings
+
+#### Scenario: Default view location options
+- **WHEN** the user configures default view location
+- **THEN** the options available are "sidebar" and "main"
+- **AND** the default value is "sidebar"
+
+### Requirement: Sidebar View Registration
+The plugin SHALL register an ItemView that displays in either the Obsidian sidebar or main editor area based on user settings.
+
+#### Scenario: View activation in sidebar
+- **WHEN** the user clicks the ribbon icon or runs the toggle command
+- **AND** the default view location is set to "sidebar"
+- **THEN** the OpenCode view opens in the right sidebar
+- **AND** if the view already exists, it is revealed
+
+#### Scenario: View activation in main area
+- **WHEN** the user clicks the ribbon icon or runs the toggle command
+- **AND** the default view location is set to "main"
+- **THEN** the OpenCode view opens as a new tab in the main editor area
+- **AND** if the view already exists in any location, it is revealed
+
+### Requirement: Ribbon Icon
+The plugin SHALL add a ribbon icon that activates the OpenCode view in the configured default location.
+
+#### Scenario: Ribbon icon click
+- **WHEN** the user clicks the OpenCode ribbon icon
+- **THEN** the OpenCode view is activated in the location specified by the default view location setting