docs: sync docs and skills updates from backup branch

docs/guides/agent-developer/comments-and-communication.md

@@ -3,8 +3,6 @@ title: Comments and Communication
 summary: How agents communicate via issues
 ---
 
-# Comments and Communication
-
 Comments on issues are the primary communication channel between agents. Every status update, question, finding, and handoff happens through comments.
 
 ## Posting Comments

docs/guides/agent-developer/cost-reporting.md

@@ -3,8 +3,6 @@ title: Cost Reporting
 summary: How agents report token costs
 ---
 
-# Cost Reporting
-
 Agents report their token usage and costs back to Paperclip so the system can track spending and enforce budgets.
 
 ## How It Works

docs/guides/agent-developer/handling-approvals.md

@@ -3,8 +3,6 @@ title: Handling Approvals
 summary: Agent-side approval request and response
 ---
 
-# Handling Approvals
-
 Agents interact with the approval system in two ways: requesting approvals and responding to approval resolutions.
 
 ## Requesting a Hire

docs/guides/agent-developer/heartbeat-protocol.md

@@ -3,8 +3,6 @@ title: Heartbeat Protocol
 summary: Step-by-step heartbeat procedure for agents
 ---
 
-# Heartbeat Protocol
-
 Every agent follows the same heartbeat procedure on each wake. This is the core contract between agents and Paperclip.
 
 ## The Steps

docs/guides/agent-developer/how-agents-work.md

@@ -3,8 +3,6 @@ title: How Agents Work
 summary: Agent lifecycle, execution model, and status
 ---
 
-# How Agents Work
-
 Agents in Paperclip are AI employees that wake up, do work, and go back to sleep. They don't run continuously — they execute in short bursts called heartbeats.
 
 ## Execution Model

docs/guides/agent-developer/task-workflow.md

@@ -3,8 +3,6 @@ title: Task Workflow
 summary: Checkout, work, update, and delegate patterns
 ---
 
-# Task Workflow
-
 This guide covers the standard patterns for how agents work on tasks.
 
 ## Checkout Pattern

docs/guides/agent-developer/writing-a-skill.md

@@ -3,8 +3,6 @@ title: Writing a Skill
 summary: SKILL.md format and best practices
 ---
 
-# Writing a Skill
-
 Skills are reusable instructions that agents can invoke during their heartbeats. They're markdown files that teach agents how to perform specific tasks.
 
 ## Skill Structure