feat: add Second Brain Sync (Scenario 0) and update orchestrator

Author: AybarsBarut

AGENTS.md

@@ -17,11 +17,15 @@ The public repository should remain safe to share. Real project context files, p
 | `AI_MAIN.md` | AI execution orchestrator and session checkpoint flow. |
 | `TASK_PROGRESS.yaml` | Current task state, sprint status, and repository maintenance progress. |
 | `DECISION_LOG_PROTOCOL.md` | Decision history and architecture intent protocol. |
+| `CONTEXT_OPTIMIZATION.md` | Strategies for handling large-scale codebases and context window limits. |
 | `CAVEMAN_RULES.md` | Token-efficient communication rules. |
 | `AI_ASSISTANT_PROMPT_TEMPLATES.md` | Reusable prompts for common AI-assisted development scenarios. |
 | `WORKSPACE_SPECIFIC_DELIVERY_PROTOCOLS.md` | Domain-specific delivery gates and release expectations. |
 | `DOMAIN_SPECIFIC_GITIGNORE_PROTOCOLS.md` | Safe publishing patterns for different project domains. |
+| `MACP_IMPLEMENTATION_GUIDE.md` | Multi-AI Coordination Protocol for parallel model workflows. |
+| `SETUP_GUIDE.md` | Step-by-step setup instructions and routine maintenance. |
 | `scripts/apcp-gather.py` | Generates an AI-ready context bundle from core protocol files. |
+| `scripts/validate-repo.py` | Repository integrity, metadata, and link validation script. |
 | `docs/SEO_CHECKLIST.md` | Repository SEO metadata and keyword source of truth. |
 
 ## Essential Commands

AI_ASSISTANT_PROMPT_TEMPLATES.md

@@ -3,6 +3,26 @@
 
 ---
 
+## 📌 SCENARIO 0: Initializing the "Second Brain" (NotebookLM / Obsidian Sync)
+**Objective:** Transform structured APCP context into a high-density Knowledge Base optimized for RAG-based tools (NotebookLM) or linked-note systems (Obsidian). This is critical for team onboarding and multi-model synchronization.
+
+**Prompt to send to AI:**
+```text
+I want to establish a "Second Brain" Knowledge Base for this project to support team onboarding and multi-AI coordination.
+
+Using the current APCP documents (Context Protocol, Task Progress, and Decision Log), please generate a "Project Wisdom Center" export. 
+
+The output should be a structured Markdown document optimized for NotebookLM (RAG) and Obsidian Vault, covering:
+1. Strategic Roadmap: The project's "North Star" and core tech stack rationale.
+2. Architectural DNA: Logical summary of the folder structure and data flow patterns.
+3. Decision Archive: Summary of key technical decisions (ADRs) and "rejected paths" to avoid refactor loops.
+4. Onboarding Guide: Top 3 rules a new developer must know and "low-hanging fruit" tasks for immediate contribution.
+
+Format the output to be instructive and mentor-like, ensuring all technical terms and file paths are explicitly linked for better AI retrieval.
+```
+
+---
+
 ## 📌 SCENARIO 1: Starting a Project for the First Time (Recommended)
 
 Copy and send to the AI in the same session:

AI_MAIN.md

@@ -13,13 +13,16 @@ Main function for AI workflow. Sequential logic. Strict execution. No fluff.
 
 ## 🚦 EXECUTION_FLOW (main)
 
-1. [x] **LOAD_CONTEXT**: Read APCP, Decision Log, Caveman Rules.
+1. [x] **LOAD_CONTEXT**: Read core protocol (APCP, Decision Log, Caveman, Context Optimization).
 2. [x] **TASK_ANALYSIS**: Create AI_MAIN.md framework.
 3. [x] **MODEL_DISPATCH**: Roles assigned (Flash for setup).
-4. [x] **IMPLEMENTATION**: Created AI_MAIN, TASK_PROGRESS, checkpoint.ps1.
-5. [ ] **QUALITY_GATE**: Verify against user intent.
-6. [ ] **CHECKPOINT_SAVE**: Update Task Progress & Decision Log.
-7. [x] **DELIVERY**: Final code pushed to origin master.
+4. [x] **IMPLEMENTATION**: Created AI_MAIN, TASK_PROGRESS, scripts/ (checkpoint.ps1, validate-repo.py, apcp-gather.py).
+5. [x] **MATURITY_LAYER**: SEO optimization and OSS hygiene (README, templates, CI).
+6. [x] **KNOWLEDGE_BASE**: Initialize Second Brain (Scenario 0) for RAG/Onboarding.
+7. [x] **QUALITY_GATE**: Verify against user intent.
+8. [x] **CHECKPOINT_SAVE**: Update Task Progress & Decision Log.
+9. [x] **DELIVERY**: Final code pushed to origin master.
+10. [ ] **MAINTENANCE**: Periodic sync of AI_MAIN with latest protocol changes.
 
 ---
 
@@ -38,16 +41,20 @@ Main function for AI workflow. Sequential logic. Strict execution. No fluff.
 
 - [x] Task 1: Create `AI_MAIN.md` execution plan.
 - [x] Task 2: Create `TASK_PROGRESS.yaml` tracking.
-- [x] Task 3: Implement `scripts/checkpoint.ps1`.
-- [ ] Task 4: Verify Caveman compliance.
+- [x] Task 3: Implement `scripts/` infrastructure (checkpoint, validation, gathering).
+- [x] Task 5: Comprehensive Repository SEO Optimization.
+- [x] Task 6: Add Open Source Repository Maturity Layer.
+- [x] Task 4: Verify Caveman compliance.
+- [x] Task 7: Synchronize `AI_MAIN.md` with current repository state.
+- [x] Task 8: Implement Second Brain Sync Scenario (Scenario 0).
 
 ---
 
 ## 🏁 CHECKPOINTS
 - [x] **CP1**: Context Sync (AI knows everything).
 - [x] **CP2**: Design Approval (Logic/UI plan ready).
 - [x] **CP3**: Code Quality (Linted, tested).
-- [ ] **CP4**: User Satisfaction (Premium delivery).
+- [x] **CP4**: User Satisfaction (Premium delivery).
 
 ---
 

TASK_PROGRESS.yaml

@@ -26,16 +26,16 @@ tasks:
     description: "Initialize task tracking system."
 
   - id: TASK-003
-    title: "Implement Checkpoint Script"
+    title: "Implement Scripts Infrastructure"
     status: COMPLETED
     priority: MEDIUM
     effort: 2
     assignee: "Antigravity (AI)"
-    description: "Create scripts/checkpoint.ps1 for pre-commit validation."
+    description: "Create scripts/ for validation, context gathering, and pre-commit checks."
 
   - id: TASK-004
     title: "Verify Caveman Compliance"
-    status: TODO
+    status: COMPLETED
     priority: HIGH
     effort: 1
     assignee: "Antigravity (AI)"
@@ -57,8 +57,24 @@ tasks:
     assignee: "Codex"
     description: "Add original AI agent guidance, PR and issue templates, community docs, CODEOWNERS, example kits, and validation CI inspired by mature open-source repository practices."
 
+  - id: TASK-007
+    title: "Synchronize AI_MAIN.md"
+    status: COMPLETED
+    priority: MEDIUM
+    effort: 1
+    assignee: "Antigravity (AI)"
+    description: "Align the main orchestrator with current repository progress and protocol updates."
+
+  - id: TASK-008
+    title: "Implement Second Brain Sync Scenario"
+    status: COMPLETED
+    priority: HIGH
+    effort: 1
+    assignee: "Antigravity (AI)"
+    description: "Create Scenario 0 in prompt templates for NotebookLM/Obsidian Knowledge Base export."
+
 metrics:
-  tasks_completed: 5
-  total_tasks: 6
+  tasks_completed: 8
+  total_tasks: 8
   velocity: 1.0
   quality_score: 100%