feat: add OpenEdge ABL file extensions support for codebase indexing

- Added .p, .i, and .w extensions to tree-sitter extensions list
- Added these extensions to fallback chunking list since no WASM parser is available
- This enables indexing of OpenEdge ABL files in codebase indexing feature

Fixes #7519

src/services/code-index/shared/supported-extensions.ts

@@ -22,6 +22,9 @@ export const fallbackExtensions = [
 	".vb", // Visual Basic .NET - no dedicated WASM parser
 	".scala", // Scala - uses fallback chunking instead of Lua query workaround
 	".swift", // Swift - uses fallback chunking due to parser instability
+	".p", // OpenEdge ABL - no dedicated WASM parser
+	".i", // OpenEdge ABL include file - no dedicated WASM parser
+	".w", // OpenEdge ABL window file - no dedicated WASM parser
 ]
 
 /**

src/services/tree-sitter/index.ts

@@ -91,6 +91,10 @@ const extensions = [
 	"erb",
 	// Visual Basic .NET
 	"vb",
+	// OpenEdge ABL
+	"p",
+	"i",
+	"w",
 ].map((e) => `.${e}`)
 
 export { extensions }