refactor(tools): fix empty catches, remove AI slop from code comments

src/tools/hashline-edit/edit-operations.test.ts

@@ -227,10 +227,10 @@ describe("hashline edit operations", () => {
   })
 
   it("preserves blank lines and indentation in range replace (no false unwrap)", () => {
-    //#given — reproduces the 애국가 bug where blank+indented lines collapse
+    //#given, reproduces the 애국가 bug where blank+indented lines collapse
     const lines = ["", "동해물과 백두산이 마르고 닳도록", "하느님이 보우하사 우리나라 만세", "", "무궁화 삼천리 화려강산", "대한사람 대한으로 길이 보전하세", ""]
 
-    //#when — replace the range with indented version (blank lines preserved)
+    //#when, replace the range with indented version (blank lines preserved)
     const result = applyReplaceLines(
       lines,
       anchorFor(lines, 1),
@@ -238,7 +238,7 @@ describe("hashline edit operations", () => {
       ["", "  동해물과 백두산이 마르고 닳도록", "  하느님이 보우하사 우리나라 만세", "", "  무궁화 삼천리 화려강산", "  대한사람 대한으로 길이 보전하세", ""]
     )
 
-    //#then — all 7 lines preserved with indentation, not collapsed to 3
+    //#then, all 7 lines preserved with indentation, not collapsed to 3
     expect(result).toEqual(["", "  동해물과 백두산이 마르고 닳도록", "  하느님이 보우하사 우리나라 만세", "", "  무궁화 삼천리 화려강산", "  대한사람 대한으로 길이 보전하세", ""])
   })
 

src/tools/hashline-edit/formatter-trigger.test.ts

@@ -350,10 +350,10 @@ describe("runFormattersForFile", () => {
       },
     })
 
-    //#when — run for a .go file, but only .ts formatters registered
+    //#when, run for a .go file, but only .ts formatters registered
     await runFormattersForFile(client, "/project", "/src/main.go")
 
-    //#then — no error thrown
+    //#then, no error thrown
   })
 
   it("runs formatter for matching extension", async () => {
@@ -367,10 +367,10 @@ describe("runFormattersForFile", () => {
       },
     })
 
-    //#when — echo is a safe no-op command
+    //#when, echo is a safe no-op command
     await runFormattersForFile(client, "/tmp", "/tmp/test.ts")
 
-    //#then — should complete without error
+    //#then, should complete without error
     expect(client.config.get).toHaveBeenCalledTimes(1)
   })
 })

src/tools/hashline-edit/validation.test.ts

@@ -23,10 +23,10 @@ describe("parseLineRef", () => {
   })
 
   it("gives specific hint when literal text is used instead of line number", () => {
-    //#given — model sends "LINE#HK" instead of "1#HK"
+    //#given, model sends "LINE#HK" instead of "1#HK"
     const ref = "LINE#HK"
 
-    //#when / #then — error should mention that LINE is not a valid number
+    //#when / #then, error should mention that LINE is not a valid number
     expect(() => parseLineRef(ref)).toThrow(/not a line number/i)
   })
 
@@ -39,10 +39,10 @@ describe("parseLineRef", () => {
   })
 
   it("extracts valid line number from mixed prefix like LINE42 without throwing", () => {
-    //#given — normalizeLineRef extracts 42#VK from LINE42#VK
+    //#given, normalizeLineRef extracts 42#VK from LINE42#VK
     const ref = "LINE42#VK"
 
-    //#when / #then — should parse successfully as line 42
+    //#when / #then, should parse successfully as line 42
     const result = parseLineRef(ref)
     expect(result.line).toBe(42)
     expect(result.hash).toBe("VK")
@@ -144,11 +144,11 @@ describe("validateLineRef", () => {
   })
 
   it("suggests correct line number when hash matches a file line", () => {
-    //#given — model sends LINE#XX where XX is the actual hash for line 1
+    //#given, model sends LINE#XX where XX is the actual hash for line 1
     const lines = ["function hello() {", "  return 42", "}"]
     const hash = computeLineHash(1, lines[0])
 
-    //#when / #then — error should suggest the correct reference
+    //#when / #then, error should suggest the correct reference
     expect(() => validateLineRefs(lines, [`LINE#${hash}`])).toThrow(new RegExp(`1#${hash}`))
   })
 })

src/tools/hashline-edit/validation.ts

@@ -48,7 +48,6 @@ export function parseLineRef(ref: string): LineRef {
       hash: match[2],
     }
   }
-  // normalized equals ref.trim() in all error paths — extraction only succeeds for valid refs
   const hashIdx = normalized.indexOf('#')
   if (hashIdx > 0) {
     const prefix = normalized.slice(0, hashIdx)