docs: Add comprehensive agent documentation

[BekahHW]

This PR adds comprehensive documentation for Agents in Continue Hub, perfectly aligned with the Mission Control UI and current capabilities.

closes CON-4359

New Documentation Structure

Getting Started (hub/agents/intro.mdx - Updated)

• Quick start guide for Mission Control with step-by-step flow
• Pre-configured agent showcase (Security Scanner, GitHub Manager)
• Ways to run agents (Mission Control, TUI, Headless) with clear use cases
• Best practices for Continuous AI adoption
• Example workflow tasks organized by category

Overview (hub/agents/overview.mdx - New)

• Complete agent concepts - what agents are and how they work
• Component deep dive - prompts, rules, tools, models, visibility
• Usage patterns with tabbed examples for all three execution modes
• Pre-configured agent catalog with links to cookbook guides
• Webhook integrations for CI/CD automation
• Team collaboration roles and permissions

Create and Edit (hub/agents/create-and-edit.mdx - New)

• Step-by-step agent creation process with Mission Control UI walkthrough
• Component configuration guides (prompts, rules, tools, models)
• Testing workflows for local validation before deployment
• Example agent configurations with proven patterns
• Best practices for prompt writing, rule selection, tool integration
• Troubleshooting guide for common issues

Key Features

• Mission Control UI alignment with actual form fields and behavior
• Integration with pre-configured cookbook agents
• Complete usage coverage (Mission Control, TUI, Headless modes)
• Team-focused collaboration content
• Cross-references to MCP integration cookbooks

---

Summary by cubic

Adds a complete Agents docs suite aligned with Mission Control to help teams understand, create, and run agents. Introduces Overview and Create/Edit guides, refreshes Getting Started, and updates navigation for clearer discovery.

• New Features
  • New Overview: core concepts, components (prompt, rules, tools, model, visibility), run modes (web, TUI, headless), pre-configured agents, and team roles.
  • New Create & Edit: step-by-step UI walkthrough, config guides, testing workflows, example configs, best practices, and troubleshooting.
  • Updated Getting Started: quick start flow, prebuilt agent examples, ways to run, and practical tips.
  • Navigation: Agents section uses a robot icon and now includes intro, overview, and create-and-edit pages with cross-links to cookbook MCP guides.

^{Written for commit 42638b0. Summary will update automatically on new commits.}

[github-actions]

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[github-actions]

✅ Review Complete

Code Review Summary

⚠️ Continue API authentication failed. Please check your CONTINUE_API_KEY.

---

[cubic-dev-ai]

2 issues found across 4 files

Prompt for AI agents (all 2 issues)

Understand the root cause of the following 2 issues and fix them.


<file name="docs/hub/agents/overview.mdx">

<violation number="1" location="docs/hub/agents/overview.mdx:21">
Update the example model name to the correct Anthropic branding “Claude 3.5 Sonnet” to avoid confusing readers.</violation>
</file>

<file name="docs/hub/agents/intro.mdx">

<violation number="1" location="docs/hub/agents/intro.mdx:155">
The headless CLI example omits the required `-p` flag, so this command will open the TUI instead of running automatically. Please include `-p` before the prompt so readers get a working headless invocation.</violation>
</file>

_{React with 👍 or 👎 to teach cubic. Mention @cubic-dev-ai to give feedback, ask questions, or re-run the review.}

[cubic-dev-ai]

Reviewed changes from recent commits (found 2 issues).

2 issues found across 11 files

Prompt for AI agents (all 2 issues)

Understand the root cause of the following 2 issues and fix them.


<file name="docs/hub/agents/overview.mdx">

<violation number="1" location="docs/hub/agents/overview.mdx:140">
The Public visibility row overstates permissions—public viewers can discover and use an agent, but they cannot create or delete it. Please align this row with the actual visibility behavior shown elsewhere in the docs.</violation>
</file>

<file name="docs/hub/agents/intro.mdx">

<violation number="1" location="docs/hub/agents/intro.mdx:57">
This link targets localhost, so the published documentation will point users to their own machine instead of the live overview page. Please update it to a relative or production URL.</violation>
</file>

_{React with 👍 or 👎 to teach cubic. Mention @cubic-dev-ai to give feedback, ask questions, or re-run the review.}

[cubic-dev-ai]

Reviewed changes from recent commits (found 2 issues).

2 issues found across 2 files

Prompt for AI agents (all 2 issues)

Understand the root cause of the following 2 issues and fix them.


<file name="docs/hub/introduction.mdx">

<violation number="1" location="docs/hub/introduction.mdx:28">
This sentence now implies only agents use these reusable components, but the rest of the page still describes configs being built from the same components. Please keep both configs and agents in scope to avoid misleading readers.</violation>

<violation number="2" location="docs/hub/introduction.mdx:62">
By stating components are only for agents, this tip now contradicts nearby guidance that shows configs also consume these components. Please keep configs in scope to maintain accurate messaging.</violation>
</file>

_{React with 👍 or 👎 to teach cubic. Mention @cubic-dev-ai to give feedback, ask questions, or re-run the review.}