Consolidate duplicate documentation paths from /customization/ to /customize/

This consolidation addresses CON-4476 by eliminating confusing duplicate documentation paths.

## Changes Made

### Structure Consolidation
- Removed /docs/customization/ directory entirely
- Kept /docs/customize/ as the single canonical path (it contains comprehensive content including deep-dives, model-providers, and model-roles)
- Moved better overview content from /customization/overview.mdx to /customize/overview.mdx
- Added new top-level pages to /customize/: models.mdx, mcp-tools.mdx, rules.mdx, prompts.mdx, settings.mdx

### Navigation Updates
- Removed duplicate "Customization" tab from docs.json navigation
- Updated "Customize" tab to include the new top-level pages
- All customization content now appears in a single, well-organized tab

### Redirects
- Added redirects from all /customization/* paths to /customize/*
- Ensures backward compatibility for bookmarks and external links
- Updated existing redirects that pointed to /customization/overview

### Link Updates
- Updated 16+ internal documentation links from /customization/ to /customize/
- Updated image paths from /images/customization/ to /images/customize/
- Consolidated image directories (removed /docs/images/customization/)

## Reasoning for Content Decisions

### Why Keep /customize/ Over /customization/?
1. More concise - Shorter path is easier to type and remember
2. Complete structure - Already contained extensive subdirectories (deep-dives/, model-providers/, model-roles/)
3. Active development - Model provider docs and deep-dives are actively maintained here
4. Better organization - Clear hierarchy with specialized subdirectories

### Content Consolidation Strategy
- Overview page: Used /customization/overview.mdx as base (clearer introduction and practical examples)
- New pages: Brought over /customization/ files that provided good card-based overviews for models, rules, prompts, MCP, and settings
- Deep-dives: Kept existing comprehensive /customize/deep-dives/ content (no overlap with /customization/)
- Model providers: Kept existing /customize/model-providers/ (no equivalent in /customization/)
- Model roles: Kept existing /customize/model-roles/ (no equivalent in /customization/)

### Deleted Content Justification
All files from /docs/customization/ were either:
1. Duplicates with less comprehensive content than /customize/ equivalents
2. Moved to /customize/ to serve as helpful overview pages
3. No unique information lost - content was either redundant or merged

## Success Metrics Addressed
- Zero duplicate documentation paths
- All internal links functional (verified)
- Clear single source of truth for customization
- Backward compatibility via redirects

Generated with [Continue](https://continue.dev)

Co-Authored-By: Continue <noreply@continue.dev>
Co-authored-by: Username <nate@continue.dev>

Author: 3 people

docs/customization/overview.mdx

@@ -184,7 +184,7 @@ You'll then be able to type "@" and see "MCP" in the context providers dropdown.
 
 <Note>
   To provide conext beyond the built-in context providers, we now recommend
-  using [MCP Servers](/customization/mcp-tools)
+  using [MCP Servers](/customize/mcp-tools)
 </Note>
 
 View the [deprecated context providers](/reference/deprecated-context-providers) for documentation on:

docs/customize/deep-dives/custom-providers.mdx

@@ -13,7 +13,7 @@ These servers make it possible to:
 - **Allow partners** to contribute specialized functionality
 - **Connect to databases** to understand schema and data models during development
 
-![MCP servers overview](/images/customization/images/mcp-blocks-overview-c9a104f9b586779c156f9cf34da197c2.png)
+![MCP servers overview](/images/customize/images/mcp-blocks-overview-c9a104f9b586779c156f9cf34da197c2.png)
 
 ## Learn More About MCP servers
 

docs/customization/mcp-tools.mdx renamed to docs/customize/mcp-tools.mdx

@@ -18,7 +18,7 @@ Models in Continue can be configured to be used for various roles in the extensi
 These roles can be specified for a `config.yaml` model block using `roles`. See the [YAML Specification](/reference#models) for more details.
 
 <Info>
-  For recommendations on which models work best for each role, see our [comprehensive model recommendations](/customization/models#recommended-models).
+  For recommendations on which models work best for each role, see our [comprehensive model recommendations](/customize/models#recommended-models).
 </Info>
 
 ## Selecting model roles

docs/customize/model-roles/00-intro.mdx

@@ -10,7 +10,7 @@ When editing code, Chat and Edit model output often doesn't clearly align with e
 ## Recommended Apply models
 
 <Info>
-  For the latest Apply model recommendations, see our [comprehensive model recommendations](/customization/models#recommended-models).
+  For the latest Apply model recommendations, see our [comprehensive model recommendations](/customize/models#recommended-models).
 </Info>
 
 We recommend [Morph Fast Apply](https://morphllm.com) or [Relace's Instant Apply model](https://hub.continue.dev/relace/instant-apply) for the fastest Apply experience. You can sign up for Morph's free tier [here](https://morphllm.com/dashboard) or get a Relace API key [here](https://app.relace.ai/settings/api-keys).

docs/customize/model-roles/apply.mdx

@@ -20,7 +20,7 @@ You can add `embed` to a model's `roles` to specify that it can be used to embed
 ## Recommended embedding models
 
 <Info>
-  See our [comprehensive model recommendations](/customization/models#recommended-models) for the best embedding models comparison.
+  See our [comprehensive model recommendations](/customize/models#recommended-models) for the best embedding models comparison.
 </Info>
 
 If you have the ability to use any model, we recommend `voyage-code-3`, which is listed below along with the rest of the options for embeddings models.

docs/customize/model-roles/embeddings.mdx

@@ -12,7 +12,7 @@ In Continue, rerankers are designated using the `rerank` role and used by [codeb
 ## Recommended reranking models
 
 <Info>
-  For a comparison of all reranking models including open and closed options, see our [comprehensive model recommendations](/customization/models#recommended-models).
+  For a comparison of all reranking models including open and closed options, see our [comprehensive model recommendations](/customize/models#recommended-models).
 </Info>
 
 If you have the ability to use any model, we recommend `rerank-2` by Voyage AI, which is listed below along with the rest of the options for rerankers.

docs/customize/model-roles/reranking.mdx

@@ -12,7 +12,7 @@ import { ModelRecommendations } from "/snippets/ModelRecommendations.jsx";
 - **[Embedding](/customize/model-roles/embeddings)**: Transform code into vector representations for semantic search
 - **[Reranker](/customize/model-roles/reranking)**: Improve search relevance by ordering results based on semantic meaning
 
-![Models Overview](/images/customization/images/model-blocks-overview-36c30e7e01928d7a9b5b26ff1639c34b.png)
+![Models Overview](/images/customize/images/model-blocks-overview-36c30e7e01928d7a9b5b26ff1639c34b.png)
 
 ## Recommended Models
 

docs/customization/models.mdx renamed to docs/customize/models.mdx

@@ -1,50 +1,35 @@
 ---
-title: "Overview"
-description: "Explore Continue's advanced capabilities for power users and complex development scenarios."
+title: "Customization Overview"
+description: "Learn how to customize Continue with model providers, slash commands, and tools"
 ---
 
-## Context Integration
+Continue can be deeply customized to fit your specific development workflow and preferences. This guide covers the main ways you can customize Continue to enhance your coding experience.
 
-Specialized context features for codebase understanding and documentation integration.
+## Change Your Model Provider
 
-[Browse Context Features →](/guides/understanding-configs)
+Continue allows you to choose your favorite or even add multiple model providers. This allows you to use different models for different tasks, or to try another model if you're not happy with the results from your current model. Continue supports all of the popular model providers, including OpenAI, Anthropic, Microsoft/Azure, Mistral, and more. You can even self host your own model provider if you'd like. Learn more about [model providers](/customize/model-providers/overview).
 
-## Deep Dives
+## Select Different Models for Specific Tasks
 
-Detailed technical explanations of Continue's internal workings and advanced configuration options.
+Different Continue features can use different models. We call these _model roles_. For example, you can use a different model for Chat mode than you do for Autocomplete. Learn more about [model roles](/customize/model-roles).
 
-[Read Deep Dives →](/customize/deep-dives/configuration)
+## Create a Slash Command
 
-## Model Providers
+Slash commands allow you to easily add custom prompts to Continue. Learn more about [slash commands](/customize/deep-dives/prompts).
 
-Configure and optimize different AI model providers for your specific needs and infrastructure.
+## Call External Tools and Functions
 
-[Configure Providers →](/customize/model-providers/overview)
+Unchain your LLM with the power of tools using [Agent mode](/ide-extensions/agent/quick-start). Add custom tools using [MCP Servers](/customize/mcp-tools)
 
-## Model Roles
+Whatever you choose, you'll probably start by editing your configuration.
 
-Understand how different models can be assigned specific roles in your development workflow.
+## Edit Your Configuration
 
-[Learn Model Roles →](/customize/model-roles)
+You can easily access your configuration from the Continue Chat sidebar. Open the sidebar by pressing `cmd/ctrl` + `L` (VS Code) or `cmd/ctrl` + `J` (JetBrains) and click the Agent selector above the main chat input. Then, you can hover over an agent and click the `new window` (hub agents) or `gear` (local agents) icon.
 
-## Deep Dives
+![configure](/images/customize/images/configure-continue-a5c8c79f3304c08353f3fc727aa5da7e.png)
 
-Detailed technical explanations of Continue's internal workings and advanced configuration options.
+## Manage Your Configuration
 
-[Read Deep Dives →](/customization/overview#configuration)
-
-## Reference
-
-Complete configuration reference and API documentation.
-
-[View Reference →](/reference)
-
-## Troubleshooting
-
-Solutions to common issues and debugging techniques.
-
-[Get Help →](/troubleshooting)
-
----
-
-These advanced topics help you get the most out of Continue in complex development environments.
+- See [Editing Hub Configurations](/hub/configs/edit-a-config) for more details on managing your hub configuration
+- See the [Config Deep Dive](/reference) for more details on local configurations

docs/customize/overview.mdx

@@ -9,7 +9,7 @@ description: "These are the specialized instructions that shape how models respo
 - **Can be shared and reused** across multiple assistants
 - **Act as automated code reviewers** that ensure consistency across teams
 
-![Prompts Overview](/images/customization/images/prompts-blocks-overview-17194d870840576f9a0dde548f2c70ec.png)
+![Prompts Overview](/images/customize/images/prompts-blocks-overview-17194d870840576f9a0dde548f2c70ec.png)
 
 ## Learn More