feat: autonomous setup flow and per-feature doc reconciliation

- setup-project: run end-to-end without pausing for human approval between steps
- add-feature Step 8: reconcile all six persistent docs with each implemented feature
- AGENTS.md: align document-management principles with the new sync rule
- opencode.json: simplify permission config

.opencode/command/setup-project.md

@@ -1,11 +1,11 @@
 ---
-description: Initial setup - interactively create the six persistent documents
+description: Initial setup - automatically create the six persistent documents
 agent: build
 ---
 
 # Initial Project Setup
 
-This command interactively creates the project's six persistent documents.
+This command automatically creates the project's six persistent documents without pausing for human feedback between steps.
 
 ## How to Run
 
@@ -28,7 +28,7 @@ ls docs/ideas/
 
 # If no files exist
 ⚠️  No files found in docs/ideas/
-   The PRD will be created interactively
+    The PRD will be created from the project context
 ```
 
 ## Procedure
@@ -47,9 +47,9 @@ ls docs/ideas/
    - Acceptance criteria
    - Non-functional requirements
    - Success metrics
-4. Ask the user for confirmation and **wait until approved**
+4. Run the skill's self-check checkpoints; if issues are found, fix them inline, then proceed immediately to the next step
 
-**The subsequent steps are based on the Product Requirements Document, so they are created automatically**
+**All subsequent steps run automatically without waiting for human feedback.**
 
 ### Step 2: Create the Functional Design Document