Add kiro setup docs (#498)

Author: satyakigh

INSTALLATION.md

@@ -36,16 +36,6 @@ unzip cfn-lsp.zip -d /path/to/install-location
 
 ## Server Configuration
 
-### Running the Server
-
-```bash
-node /path/to/install-location/cfn-lsp-server-standalone.js --stdio
-```
-
-Communication options:
-- `--stdio` - Use stdin/stdout (recommended)
-- `--node-ipc` - Use Node IPC
-
 ### Initialization Options
 
 The language server accepts initialization options via the LSP `initialize` request:
@@ -131,7 +121,7 @@ See [Telemetry](src/telemetry/README.md) for details on collected metrics.
 
 ---
 
-## Editor Setup
+## Client Setup
 
 ### Neovim
 
@@ -165,6 +155,46 @@ lspconfig.cfn_lsp.setup({})
 
 Verify: Open a YAML/JSON file and run `:LspInfo`
 
+### Kiro CLI
+
+[Kiro CLI](https://kiro.dev/docs/cli/) supports [custom language servers](https://kiro.dev/docs/cli/code-intelligence/#custom-language-servers) via its LSP integration. To configure the CloudFormation Language Server:
+
+1. Run `/code init` in your project root (if not already initialized)
+
+2. Edit the generated `lsp.json` (located at `.kiro/settings/lsp.json`) and add the `cloudformation` entry:
+
+```json
+{
+  "languages": {
+    "cloudformation": {
+      "name": "cloudformation-languageserver",
+      "command": "node",
+      "args": ["/path/to/install-location/cfn-lsp-server-standalone.js", "--stdio"],
+      "file_extensions": ["json", "yaml", "yml", "cfn", "template"],
+      "project_patterns": [],
+      "exclude_patterns": [],
+      "multi_workspace": false,
+      "initialization_options": {
+        "aws": {
+          "clientInfo": {
+            "extension": {
+              "name": "kiro-cli",
+              "version": "1.0.0"
+            }
+          },
+          "telemetryEnabled": true
+        }
+      },
+      "request_timeout_secs": 60
+    }
+  }
+}
+```
+
+3. Restart Kiro CLI to load the new configuration, or run `/code init -f` to force re-initialization
+
+Verify: Run `/code status` to confirm the `cloudformation` server is initialized.
+
 ### Sublime Text (LSP package)
 
 Add to LSP settings: