docs: rename coder-ai directory to avoid wildcard removal (#17348)

to something that doesn't get caught in a wildcard redirect

Co-authored-by: EdwardAngert <17991901+EdwardAngert@users.noreply.github.com>

docs/ai-coder/securing.md

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+> [!NOTE]
+>
+> This functionality is in early access and is evolving rapidly.
+>
+> For now, we recommend testing it in a demo or staging environment,
+> rather than deploying to production.
+>
+> Join our [Discord channel](https://discord.gg/coder) or
+> [contact us](https://coder.com/contact) to get help or share feedback.
+
+As the AI landscape is evolving, we are working to ensure Coder remains a secure
+platform for running AI agents just as it is for other cloud development
+environments.
+
+## Use Trusted Models
+
+Most [agents](./agents.md) can be configured to either use a local LLM (e.g.
+llama3), an agent proxy (e.g. OpenRouter), or a Cloud-Provided LLM (e.g. AWS
+Bedrock). Research which models you are comfortable with and configure your
+[Coder templates](./create-template.md) to use those.
+
+## Set up Firewalls and Proxies
+
+Many enterprises run Coder workspaces behind a firewall or a proxy to prevent
+threats or bad actors. These same protections can be used to ensure AI agents do
+not access or upload sensitive information.
+
+## Separate API keys and scopes for agents
+
+Many agents require API keys to access external services. It is recommended to
+create a separate API key for your agent with the minimum permissions required.
+This will likely involve editing your
+[template for Agents](./create-template.md) to set different scopes or tokens
+from the standard one.
+
+Additional guidance and tooling is coming in future releases of Coder.
+
+## Set Up Agent Boundaries (Premium)
+
+Agent Boundaries add an additional layer and isolation of security between the
+agent and the rest of the environment inside of your Coder workspace, allowing
+humans to have more privileges and access compared to agents inside the same
+workspace.
+
+Trial agent boundaries in your workspaces by following the instructions in the
+[boundary-releases](https://github.com/coder/boundary-releases) repository.
+
+- [Contact us for more information](https://coder.com/contact)