Enforce single-line records in sweep state CSV writers

.claude/commands/deep-sweep.md

@@ -119,11 +119,17 @@ with path.open() as f:
     reader = csv.DictReader(f)
     header = reader.fieldnames
     rows = [r for r in reader if r["module"] != "{module}"]
+def _oneline(v):
+    # merge=union is line-based: a newline inside a quoted field splits
+    # the record on parallel-agent merges. Force one physical line per
+    # record by collapsing embedded newlines to " | ".
+    return "" if v is None else str(v).replace("\r\n", " | ").replace("\r", " | ").replace("\n", " | ")
+
 with path.open("w", newline="") as f:
     w = csv.DictWriter(f, fieldnames=header, quoting=csv.QUOTE_MINIMAL)
     w.writeheader()
     for r in rows:
-        w.writerow(r)
+        w.writerow({k: _oneline(v) for k, v in r.items()})
 ```
 
 This removes only the target module's row from each state file, leaving

.claude/commands/sweep-accuracy.md

@@ -263,11 +263,17 @@ If CUDA_AVAILABLE is false:
        "notes": "<single-line notes (replace any newlines with spaces), or empty>",
    }
 
+   def _oneline(v):
+       # merge=union is line-based: a newline inside a quoted field splits
+       # the record on parallel-agent merges. Force one physical line per
+       # record by collapsing embedded newlines to " | ".
+       return "" if v is None else str(v).replace("\r\n", " | ").replace("\r", " | ").replace("\n", " | ")
+
    with path.open("w", newline="") as f:
        w = csv.DictWriter(f, fieldnames=header, quoting=csv.QUOTE_MINIMAL)
        w.writeheader()
        for m in sorted(rows):
-           w.writerow(rows[m])
+           w.writerow({k: _oneline(v) for k, v in rows[m].items()})
    ```
 
    Use empty strings (not `null`) for missing values. Set `issue` to the

.claude/commands/sweep-api-consistency.md

@@ -238,11 +238,17 @@ If CUDA_AVAILABLE is false:
        "notes": "<single-line notes or empty>",
    }
 
+   def _oneline(v):
+       # merge=union is line-based: a newline inside a quoted field splits
+       # the record on parallel-agent merges. Force one physical line per
+       # record by collapsing embedded newlines to " | ".
+       return "" if v is None else str(v).replace("\r\n", " | ").replace("\r", " | ").replace("\n", " | ")
+
    with path.open("w", newline="") as f:
        w = csv.DictWriter(f, fieldnames=header, quoting=csv.QUOTE_MINIMAL)
        w.writeheader()
        for m in sorted(rows):
-           w.writerow(rows[m])
+           w.writerow({k: _oneline(v) for k, v in rows[m].items()})
    ```
 
    Then `git add` and commit.

.claude/commands/sweep-metadata.md

@@ -266,11 +266,17 @@ If CUDA_AVAILABLE is false:
        "notes": "<single-line notes (replace any newlines with spaces), or empty>",
    }
 
+   def _oneline(v):
+       # merge=union is line-based: a newline inside a quoted field splits
+       # the record on parallel-agent merges. Force one physical line per
+       # record by collapsing embedded newlines to " | ".
+       return "" if v is None else str(v).replace("\r\n", " | ").replace("\r", " | ").replace("\n", " | ")
+
    with path.open("w", newline="") as f:
        w = csv.DictWriter(f, fieldnames=header, quoting=csv.QUOTE_MINIMAL)
        w.writeheader()
        for m in sorted(rows):
-           w.writerow(rows[m])
+           w.writerow({k: _oneline(v) for k, v in rows[m].items()})
    ```
 
    Use empty strings (not `null`) for missing values.

.claude/commands/sweep-performance.md

@@ -289,11 +289,17 @@ If CUDA_AVAILABLE is false:
        "notes": "<single-line notes (replace any newlines with spaces), or empty>",
    }
 
+   def _oneline(v):
+       # merge=union is line-based: a newline inside a quoted field splits
+       # the record on parallel-agent merges. Force one physical line per
+       # record by collapsing embedded newlines to " | ".
+       return "" if v is None else str(v).replace("\r\n", " | ").replace("\r", " | ").replace("\n", " | ")
+
    with path.open("w", newline="") as f:
        w = csv.DictWriter(f, fieldnames=header, quoting=csv.QUOTE_MINIMAL)
        w.writeheader()
        for m in sorted(rows):
-           w.writerow(rows[m])
+           w.writerow({k: _oneline(v) for k, v in rows[m].items()})
    ```
 
    Use empty strings (not `null`) for missing values. Set `issue` to the

.claude/commands/sweep-security.md

@@ -264,11 +264,17 @@ If CUDA_AVAILABLE is false:
        "notes": "<single-line notes (replace any newlines with spaces), or empty>",
    }
 
+   def _oneline(v):
+       # merge=union is line-based: a newline inside a quoted field splits
+       # the record on parallel-agent merges. Force one physical line per
+       # record by collapsing embedded newlines to " | ".
+       return "" if v is None else str(v).replace("\r\n", " | ").replace("\r", " | ").replace("\n", " | ")
+
    with path.open("w", newline="") as f:
        w = csv.DictWriter(f, fieldnames=header, quoting=csv.QUOTE_MINIMAL)
        w.writeheader()
        for m in sorted(rows):
-           w.writerow(rows[m])
+           w.writerow({k: _oneline(v) for k, v in rows[m].items()})
    ```
 
    Use empty strings (not `null`) for missing values. Set `issue` to the

.claude/commands/sweep-test-coverage.md

@@ -239,11 +239,17 @@ If CUDA_AVAILABLE is false:
        "notes": "<single-line notes or empty>",
    }
 
+   def _oneline(v):
+       # merge=union is line-based: a newline inside a quoted field splits
+       # the record on parallel-agent merges. Force one physical line per
+       # record by collapsing embedded newlines to " | ".
+       return "" if v is None else str(v).replace("\r\n", " | ").replace("\r", " | ").replace("\n", " | ")
+
    with path.open("w", newline="") as f:
        w = csv.DictWriter(f, fieldnames=header, quoting=csv.QUOTE_MINIMAL)
        w.writeheader()
        for m in sorted(rows):
-           w.writerow(rows[m])
+           w.writerow({k: _oneline(v) for k, v in rows[m].items()})
    ```
 
    Then `git add` and commit.