opencode-obsidian/openspec/changes/add-workspace-context-injection/tasks.md

Tasks: Add Workspace Context Injection

1. Dependencies

• 1.1 No new dependencies required (use direct fetch() calls)

2. Types and Settings

• 2.1 Add injectWorkspaceContext: boolean to OpenCodeSettings interface (default: true)
• 2.2 Add maxNotesInContext: number to OpenCodeSettings interface (default: 20)
• 2.3 Add maxSelectionLength: number to OpenCodeSettings interface (default: 2000)
• 2.4 Update DEFAULT_SETTINGS with new values

3. OpenCode Client Module

• 3.1 Create src/OpenCodeClient.ts with a small HTTP wrapper
• 3.2 Implement createSession() and session URL helpers
• 3.3 Implement updateContext() using update-part or ignore+reinject (no revert)
• 3.4 Track last injected context message/part IDs for the tracked session
• 3.5 Add error handling for API failures (silent catch, log to console)

4. Workspace Context Module

• 4.1 Create src/WorkspaceContext.ts for collecting workspace context
• 4.2 Implement getOpenNotePaths() using getLeavesOfType("markdown")
• 4.3 Implement getSelectedText() to get current editor selection with source file
• 4.4 Implement formatContext() to generate the combined context string
• 4.5 Add deduplication for files open in multiple panes
• 4.6 Add truncation for selections exceeding maxSelectionLength

5. Main Plugin Integration

• 5.1 Import OpenCodeClient and WorkspaceContext in main.ts
• 5.2 Initialize WorkspaceContext in onload()
• 5.3 Create debounced updateOpenCodeContext() method (2 second delay)
• 5.4 Register active-leaf-change event listener (conditional on setting)
• 5.5 Register layout-change event listener (conditional on setting)
• 5.6 Register editor-change event listener for selection changes (conditional on setting)
• 5.7 Create an OpenCode session on first view open and store the iframe URL (in-memory)
• 5.8 Before injecting, resolve sessionID by parsing the current iframe URL (if no session route, no-op)
• 5.9 Add server running check before attempting context updates
• 5.10 Trigger initial context injection when server reaches running state and a session exists

6. Settings UI

• 6.1 Add toggle for "Inject workspace context" in SettingsTab
• 6.2 Add slider for "Max notes in context" (1-50 range)
• 6.3 Add slider or input for "Max selection length" (500-5000 range)
• 6.4 Add descriptive text explaining the feature includes open notes and selected text

7. Testing

• 7.1 Manual test: Open multiple notes, verify context appears in OpenCode
• 7.2 Manual test: Select text, verify selection appears in context with source file
• 7.3 Manual test: Close notes, verify context updates (old ignored/updated, new injected)
• 7.4 Manual test: Clear selection, verify selection section is removed
• 7.5 Manual test: Disable setting, verify no context injection
• 7.6 Manual test: Server not running, verify no errors thrown
• 7.7 Manual test: Large selection, verify truncation works
• 7.8 Build and verify no TypeScript errors