fix(hashline-read-enhancer): support plain read output without content tags

🤖 Generated with assistance of [OhMyOpenCode](https://github.com/code-yeongyu/oh-my-opencode)

assets/oh-my-opencode.schema.json

@@ -3208,6 +3208,9 @@
         "disable_omo_env": {
           "type": "boolean"
         },
+        "hashline_edit": {
+          "type": "boolean"
+        },
         "model_fallback_title": {
           "type": "boolean"
         }

src/hooks/hashline-read-enhancer/hook.ts

@@ -6,7 +6,7 @@ interface HashlineReadEnhancerConfig {
   hashline_edit?: { enabled: boolean }
 }
 
-const READ_LINE_PATTERN = /^(\d+): (.*)$/
+const READ_LINE_PATTERN = /^(\d+): ?(.*)$/
 const CONTENT_OPEN_TAG = "<content>"
 const CONTENT_CLOSE_TAG = "</content>"
 
@@ -47,25 +47,38 @@ function transformOutput(output: string): string {
   const contentStart = lines.indexOf(CONTENT_OPEN_TAG)
   const contentEnd = lines.indexOf(CONTENT_CLOSE_TAG)
 
-  if (contentStart === -1 || contentEnd === -1 || contentEnd <= contentStart + 1) {
-    return output
+  if (contentStart !== -1 && contentEnd !== -1 && contentEnd > contentStart + 1) {
+    const fileLines = lines.slice(contentStart + 1, contentEnd)
+    if (!isTextFile(fileLines[0] ?? "")) {
+      return output
+    }
+
+    const result: string[] = []
+    for (const line of fileLines) {
+      if (!READ_LINE_PATTERN.test(line)) {
+        result.push(...fileLines.slice(result.length))
+        break
+      }
+      result.push(transformLine(line))
+    }
+
+    return [...lines.slice(0, contentStart + 1), ...result, ...lines.slice(contentEnd)].join("\n")
   }
 
-  const fileLines = lines.slice(contentStart + 1, contentEnd)
-  if (!isTextFile(fileLines[0] ?? "")) {
+  if (!isTextFile(lines[0] ?? "")) {
     return output
   }
 
   const result: string[] = []
-  for (const line of fileLines) {
+  for (const line of lines) {
     if (!READ_LINE_PATTERN.test(line)) {
-      result.push(...fileLines.slice(result.length))
+      result.push(...lines.slice(result.length))
       break
     }
     result.push(transformLine(line))
   }
 
-  return [...lines.slice(0, contentStart + 1), ...result, ...lines.slice(contentEnd)].join("\n")
+  return result.join("\n")
 }
 
 function extractFilePath(metadata: unknown): string | undefined {

src/hooks/hashline-read-enhancer/index.test.ts

@@ -50,6 +50,33 @@ describe("hashline-read-enhancer", () => {
     expect(lines[10]).toBe("1: keep this unchanged")
   })
 
+  it("hashifies plain read output without content tags", async () => {
+    //#given
+    const hook = createHashlineReadEnhancerHook(mockCtx(), { hashline_edit: { enabled: true } })
+    const input = { tool: "read", sessionID: "s", callID: "c" }
+    const output = {
+      title: "README.md",
+      output: [
+        "1: # Oh-My-OpenCode Features",
+        "2:",
+        "3: Hashline test",
+        "",
+        "(End of file - total 3 lines)",
+      ].join("\n"),
+      metadata: {},
+    }
+
+    //#when
+    await hook["tool.execute.after"](input, output)
+
+    //#then
+    const lines = output.output.split("\n")
+    expect(lines[0]).toMatch(/^1#[ZPMQVRWSNKTXJBYH]{2}:# Oh-My-OpenCode Features$/)
+    expect(lines[1]).toMatch(/^2#[ZPMQVRWSNKTXJBYH]{2}:$/)
+    expect(lines[2]).toMatch(/^3#[ZPMQVRWSNKTXJBYH]{2}:Hashline test$/)
+    expect(lines[4]).toBe("(End of file - total 3 lines)")
+  })
+
   it("appends LINE#ID output for write tool using metadata filepath", async () => {
     //#given
     const hook = createHashlineReadEnhancerHook(mockCtx(), { hashline_edit: { enabled: true } })