feat: expose acquisition error log via RawFile.error_log()

CHANGELOG.md

@@ -15,6 +15,10 @@ and this project adheres to [Semantic Versioning](https://semver.org/spec/v2.0.0
   `dilution_factor`, `user_labels`, `inst_method`, `proc_method`,
   `file_name`, `path`). The Rust core already decoded this
   (`RawFileReader::seq_row`); this exposes it to Python. (@Nabejo)
+- `RawFile.error_log()` (Python): returns the acquisition error log as a
+  list of `{"time": ..., "message": ...}` dicts, in log order (`time` is
+  the acquisition-relative time in minutes). The Rust core already decoded
+  this (`RawFileReader::error_log`); this exposes it to Python. (@Nabejo)
 
 ## [1.2.1] - 2026-07-06
 

crates/opentfraw-py/src/lib.rs

@@ -208,6 +208,23 @@ impl RawFile {
         self.reader.scan_filter(scan_number)
     }
 
+    /// Return the acquisition error log as a list of
+    /// ``{"time": ..., "message": ...}`` dicts, in log order.
+    ///
+    /// ``time`` is the acquisition-relative time in minutes; ``message`` is
+    /// the instrument-reported error text. The Rust core already decodes
+    /// this (`RawFileReader::error_log`); this surfaces it to Python.
+    fn error_log<'py>(&self, py: Python<'py>) -> PyResult<Bound<'py, PyList>> {
+        let list = PyList::empty_bound(py);
+        for entry in &self.reader.error_log {
+            let d = PyDict::new_bound(py);
+            d.set_item("time", entry.time)?;
+            d.set_item("message", &entry.message)?;
+            list.append(d)?;
+        }
+        Ok(list)
+    }
+
     /// Return the per-scan generic ("trailer") parameters for `scan_number` as
     /// a ``{label: value}`` dict, or ``None`` if the scan has no parameter
     /// record. Mirrors the vendor reader's trailer-extra information: keys are