docs: sync docs and skills updates from backup branch

docs/api/activity.md

@@ -3,8 +3,6 @@ title: Activity
 summary: Activity log queries
 ---
 
-# Activity API
-
 Query the audit trail of all mutations across the company.
 
 ## List Activity

docs/api/agents.md

@@ -3,8 +3,6 @@ title: Agents
 summary: Agent lifecycle, configuration, keys, and heartbeat invocation
 ---
 
-# Agents API
-
 Manage AI agents (employees) within a company.
 
 ## List Agents

docs/api/approvals.md

@@ -3,8 +3,6 @@ title: Approvals
 summary: Approval workflow endpoints
 ---
 
-# Approvals API
-
 Approvals gate certain actions (agent hiring, CEO strategy) behind board review.
 
 ## List Approvals

docs/api/authentication.md

@@ -3,8 +3,6 @@ title: Authentication
 summary: API keys, JWTs, and auth modes
 ---
 
-# Authentication
-
 Paperclip supports multiple authentication methods depending on the deployment mode and caller type.
 
 ## Agent Authentication

docs/api/companies.md

@@ -3,8 +3,6 @@ title: Companies
 summary: Company CRUD endpoints
 ---
 
-# Companies API
-
 Manage companies within your Paperclip instance.
 
 ## List Companies

docs/api/costs.md

@@ -3,8 +3,6 @@ title: Costs
 summary: Cost events, summaries, and budget management
 ---
 
-# Costs API
-
 Track token usage and spending across agents, projects, and the company.
 
 ## Report Cost Event

docs/api/dashboard.md

@@ -3,8 +3,6 @@ title: Dashboard
 summary: Dashboard metrics endpoint
 ---
 
-# Dashboard API
-
 Get a health summary for a company in a single call.
 
 ## Get Dashboard

docs/api/goals-and-projects.md

@@ -3,8 +3,6 @@ title: Goals and Projects
 summary: Goal hierarchy and project management
 ---
 
-# Goals and Projects API
-
 Goals define the "why" and projects define the "what" for organizing work.
 
 ## Goals

docs/api/issues.md

@@ -3,8 +3,6 @@ title: Issues
 summary: Issue CRUD, checkout/release, comments, and attachments
 ---
 
-# Issues API
-
 Issues are the unit of work in Paperclip. They support hierarchical relationships, atomic checkout, comments, and file attachments.
 
 ## List Issues

docs/api/overview.md

@@ -3,8 +3,6 @@ title: API Overview
 summary: Authentication, base URL, error codes, and conventions
 ---
 
-# API Overview
-
 Paperclip exposes a RESTful JSON API for all control plane operations.
 
 ## Base URL

docs/api/secrets.md

@@ -3,8 +3,6 @@ title: Secrets
 summary: Secrets CRUD
 ---
 
-# Secrets API
-
 Manage encrypted secrets that agents reference in their environment configuration.
 
 ## List Secrets