Files view: the change-details modal shows the full file path (v2.4.2)

- the modal header showed only the flat name (EF_ICCID, 4F09); it now shows the
  path built from data already available: the tracker's DF identity named via
  KNOWN_FIDS (MF, DF_GSM_ACCESS, DF_TELECOM, …), 'ADF' for the current
  application (7FFF), DF_CHILDREN for DF-qualified EF names (4F52 →
  EF_KcGPRS) and the EF.DIR labels for AID-selected applications —
  e.g. `MF/EF_ICCID (2FE2)`, `ADF/EF_IMSI (6F07)`,
  `DF_GSM_ACCESS/EF_KcGPRS (4F52)`, `AID A00000015141434C00/4F09`
- exposed as `path` in the change-details payload and in the files entries
  (the timeline rows keep the short name — they have no room)
- the colour legend (changed / newly observed / never observed) moved below
  the two hex views
- tests: `_file_path` cases (MF, ADF, DF-qualified EF, AID with and without an
  EF.DIR label, FID-as-name) plus the payload field, and the Node modal test
  asserts the path header and that the legend follows the views
- v2.4.2; SW cache simtrace-analyser-v68

simtrace_analyser/filetrack.py

@@ -39,7 +39,8 @@ keeps counting).
 """
 
 from .database import _SUCCESS_SW1
-from .decode import (_is_df_fid, select_target_fid, selected_df_fid, sfi_table)
+from .decode import (DF_CHILDREN, KNOWN_FIDS, _is_df_fid, select_target_fid,
+                     selected_df_fid, sfi_table)
 
 IMAGE_CAP = 64 * 1024      # observed bytes kept per file
 EVENTS_CAP = 1000          # change events kept per file
@@ -72,6 +73,25 @@ def _file_label(d):
     return None
 
 
+def _file_path(df, fid, name, aid_labels=None):
+    """A human-readable path for a tracked file: the DF (named when known),
+    the EF and the FID — e.g. ``MF/EF_ICCID (2FE2)``,
+    ``ADF/EF_IMSI (6F07)``, ``DF_GSM_ACCESS/EF_KcGPRS (4F52)``,
+    ``AID A00000015141434C00/4F09``."""
+    ef = (DF_CHILDREN.get(df, {}) or {}).get(fid) or name or fid.upper()
+    if df.startswith('aid:'):
+        aid = df[4:].upper()
+        label = (aid_labels or {}).get(aid)
+        df_label = f'AID {aid}' + (f' ({label})' if label else '')
+    elif df == '7fff':
+        df_label = 'ADF'
+    else:
+        df_label = KNOWN_FIDS.get(df) or df.upper()
+    if ef.upper() == fid.upper():
+        return f'{df_label}/{ef.upper()}'
+    return f'{df_label}/{ef} ({fid.upper()})'
+
+
 def _key_str(key):
     df, fid = key
     return f'{df}/{fid}'
@@ -515,6 +535,8 @@ class FileTracker:
         return {
             'key': _key_str(entry.key),
             'name': entry.name,
+            'path': _file_path(entry.df, entry.fid, entry.name,
+                               self.aid_labels),
             'df': entry.df,
             'fid': entry.fid,
             'structure': entry.structure,
@@ -540,6 +562,8 @@ class FileTracker:
         for key, entry in self.files.items():
             files[_key_str(key)] = {
                 'name': entry.name,
+                'path': _file_path(entry.df, entry.fid, entry.name,
+                                   self.aid_labels),
                 'df': entry.df,
                 'fid': entry.fid,
                 'sfi': entry.sfi,