tools/lsp: fix arg field names to match .meta schema

Binaries now read path/line/col (matching the .meta schema the model
sees) instead of file/line/character. Also fix col to be 1-indexed
(matching the schema description) with proper -1 conversion to LSP
0-indexed protocol.

tools/lsp/cmd/lsp_completion/main.go

@@ -18,16 +18,16 @@ func main() {
 	}
 
 	var args struct {
-		File string `json:"file"`
+		Path string `json:"path"`
 		Line string `json:"line"`
-		Col  string `json:"character"`
+		Col  string `json:"col"`
 	}
 	if err := json.NewDecoder(os.Stdin).Decode(&args); err != nil {
 		fmt.Fprintf(os.Stderr, "error: %v\n", err)
 		os.Exit(1)
 	}
 
-	file, _ := filepath.Abs(args.File)
+	file, _ := filepath.Abs(args.Path)
 	line, _ := strconv.Atoi(args.Line)
 	col, _ := strconv.Atoi(args.Col)
 
@@ -35,7 +35,7 @@ func main() {
 		Method: "completion",
 		File:   file,
 		Line:   line - 1,
-		Col:    col,
+		Col:    col - 1,
 	})
 	if err != nil {
 		fmt.Fprintf(os.Stderr, "error: %v\n", err)

tools/lsp/cmd/lsp_definition/main.go

@@ -21,24 +21,24 @@ func main() {
 	}
 
 	var args struct {
-		File string `json:"file"`
+		Path string `json:"path"`
 		Line string `json:"line"`
-		Col  string `json:"character"`
+		Col  string `json:"col"`
 	}
 	if err := json.NewDecoder(os.Stdin).Decode(&args); err != nil {
 		fmt.Fprintf(os.Stderr, "error: %v\n", err)
 		os.Exit(1)
 	}
 
-	file, _ := filepath.Abs(args.File)
+	file, _ := filepath.Abs(args.Path)
 	line, _ := strconv.Atoi(args.Line)
 	col, _ := strconv.Atoi(args.Col)
 
 	result, err := lsp.ClientRequest(&lsp.BridgeRequest{
 		Method: "definition",
 		File:   file,
-		Line:   line - 1, // 1-indexed → 0-indexed
-		Col:    col,       // already 0-indexed per .meta schema
+		Line: line - 1, // 1-indexed → 0-indexed
+		Col:  col - 1,  // 1-indexed → 0-indexed
 	})
 	if err != nil {
 		fmt.Fprintf(os.Stderr, "error: %v\n", err)

tools/lsp/cmd/lsp_diagnostics/main.go

@@ -17,14 +17,14 @@ func main() {
 	}
 
 	var args struct {
-		File string `json:"file"`
+		Path string `json:"path"`
 	}
 	if err := json.NewDecoder(os.Stdin).Decode(&args); err != nil {
 		fmt.Fprintf(os.Stderr, "error: %v\n", err)
 		os.Exit(1)
 	}
 
-	file, _ := filepath.Abs(args.File)
+	file, _ := filepath.Abs(args.Path)
 
 	result, err := lsp.ClientRequest(&lsp.BridgeRequest{
 		Method: "diagnostics",

tools/lsp/cmd/lsp_hover/main.go

@@ -18,16 +18,16 @@ func main() {
 	}
 
 	var args struct {
-		File string `json:"file"`
+		Path string `json:"path"`
 		Line string `json:"line"`
-		Col  string `json:"character"`
+		Col  string `json:"col"`
 	}
 	if err := json.NewDecoder(os.Stdin).Decode(&args); err != nil {
 		fmt.Fprintf(os.Stderr, "error: %v\n", err)
 		os.Exit(1)
 	}
 
-	file, _ := filepath.Abs(args.File)
+	file, _ := filepath.Abs(args.Path)
 	line, _ := strconv.Atoi(args.Line)
 	col, _ := strconv.Atoi(args.Col)
 
@@ -35,7 +35,7 @@ func main() {
 		Method: "hover",
 		File:   file,
 		Line:   line - 1,
-		Col:    col,
+		Col:    col - 1,
 	})
 	if err != nil {
 		fmt.Fprintf(os.Stderr, "error: %v\n", err)

tools/lsp/cmd/lsp_references/main.go

@@ -18,16 +18,16 @@ func main() {
 	}
 
 	var args struct {
-		File string `json:"file"`
+		Path string `json:"path"`
 		Line string `json:"line"`
-		Col  string `json:"character"`
+		Col  string `json:"col"`
 	}
 	if err := json.NewDecoder(os.Stdin).Decode(&args); err != nil {
 		fmt.Fprintf(os.Stderr, "error: %v\n", err)
 		os.Exit(1)
 	}
 
-	file, _ := filepath.Abs(args.File)
+	file, _ := filepath.Abs(args.Path)
 	line, _ := strconv.Atoi(args.Line)
 	col, _ := strconv.Atoi(args.Col)
 
@@ -35,7 +35,7 @@ func main() {
 		Method: "references",
 		File:   file,
 		Line:   line - 1,
-		Col:    col,
+		Col:    col - 1,
 	})
 	if err != nil {
 		fmt.Fprintf(os.Stderr, "error: %v\n", err)

tools/lsp/cmd/lsp_rename/main.go

@@ -20,9 +20,9 @@ func main() {
 	}
 
 	var args struct {
-		File    string `json:"file"`
+		Path    string `json:"path"`
 		Line    string `json:"line"`
-		Col     string `json:"character"`
+		Col     string `json:"col"`
 		NewName string `json:"new_name"`
 	}
 	if err := json.NewDecoder(os.Stdin).Decode(&args); err != nil {
@@ -30,7 +30,7 @@ func main() {
 		os.Exit(1)
 	}
 
-	file, _ := filepath.Abs(args.File)
+	file, _ := filepath.Abs(args.Path)
 	line, _ := strconv.Atoi(args.Line)
 	col, _ := strconv.Atoi(args.Col)
 
@@ -38,7 +38,7 @@ func main() {
 		Method:  "rename",
 		File:    file,
 		Line:    line - 1,
-		Col:     col,
+		Col:     col - 1,
 		NewName: args.NewName,
 	})
 	if err != nil {

tools/lsp/cmd/lsp_symbols/main.go

@@ -17,7 +17,7 @@ func main() {
 	}
 
 	var args struct {
-		File  string `json:"file"`
+		Path  string `json:"path"`
 		Query string `json:"query"`
 	}
 	if err := json.NewDecoder(os.Stdin).Decode(&args); err != nil {
@@ -25,7 +25,7 @@ func main() {
 		os.Exit(1)
 	}
 
-	file, _ := filepath.Abs(args.File)
+	file, _ := filepath.Abs(args.Path)
 	workspace := args.Query != ""
 
 	result, err := lsp.ClientRequest(&lsp.BridgeRequest{