fix: image reading

packages/opencode/src/session/index.ts

@@ -372,11 +372,11 @@ export namespace Session {
               return [
                 {
                   type: "text",
-                  text: ["Called the Read tool on " + url.pathname].join("\n"),
+                  text: `Called the Read tool with the following input: {\"filePath\":\"${url.pathname}\"}`,
                 },
                 {
                   type: "file",
-                  url: `data:${part.mime};base64,` + Buffer.from(await file.bytes()).toString("base64url"),
+                  url: `data:${part.mime};base64,` + Buffer.from(await file.bytes()).toString("base64"),
                   mime: part.mime,
                   filename: part.filename!,
                 },

packages/opencode/src/tool/read.txt

@@ -2,7 +2,7 @@ Reads a file from the local filesystem. You can access any file directly by usin
 Assume this tool is able to read all files on the machine. If the User provides a path to a file assume that path is valid. It is okay to read a file that does not exist; an error will be returned.
 
 Usage:
-- The file_path parameter must be an absolute path, not a relative path
+- The filePath parameter must be an absolute path, not a relative path
 - By default, it reads up to 2000 lines starting from the beginning of the file
 - You can optionally specify a line offset and limit (especially handy for long files), but it's recommended to read the whole file by not providing these parameters
 - Any lines longer than 2000 characters will be truncated