refactor(bw-report): parse user notes by POSITION, not by label

The four operator-supplied note fields in BW's Compliance Setup →
Notes tab (Project / Client / User Name / Seis Loc) have
USER-EDITABLE LABELS — an operator can rename them in BW's UI to
"Building:", "Site Address:", "Inspector:", or anything else, and
the ASCII export writes those literal labels verbatim.  The
previous label-normalisation map approach (just added in commit
6a7e8c6) was fragile: it could only match label spellings we'd
enumerated in advance.  An operator using "Site:" instead of
"Seis Loc:" would have their sensor location silently dropped.

What IS reliable: BW always writes the 4 user-notes lines
contiguously, in the same order, between the "Units :" line and
the "Geo Range :" line of the export.  So parse them by POSITION:

  position 1 → project
  position 2 → client
  position 3 → operator
  position 4 → sensor_location

The original labels BW wrote are preserved in a new
`BwAsciiReport.user_note_labels` dict (canonical slot → literal
label string) so terra-view can render them as the operator named
them.

Removes the `_OPERATOR_LABEL_MAP` / `_normalise_label_for_lookup`
helpers and the elif-by-normalised-label branch in `parse_report`.
Replaces with a small state machine that flips on the "Units" line
and flips off on the "Geo Range" line.

Tests:
  - Default-label fixtures (waveform + histogram) still populate
    correctly, with operator's labels captured.
  - Synthetic custom-labelled exports ("Building:" / "Site Address:" /
    etc.) populate the right slots by position.
  - Histogram-specific "Seis. Location:" works.
  - Lines outside the Units→Geo Range range are ignored even if
    they look like user notes (defensive against malformed exports).
  - Partial blocks (fewer than 4 lines) leave later slots None.
  - Extra lines beyond 4 are dropped (5th slot doesn't exist).

26 tests in test_bw_ascii_report.py (was 33; net drop reflects
parametrised label tests collapsed into 6 focused position tests).
Full SFM suite: 62 passed, 44 skipped.

Pairs with series3-watcher v1.5.0 which fixes the filename pairing
so the report reaches this parser in the first place.

minimateplus/bw_ascii_report.py

@@ -115,10 +115,24 @@ class BwAsciiReport:
     units:                  Optional[str]   = None  # e.g. "in/s and dB(L)"
 
     # ── Operator-supplied metadata ──────────────────────────────────────────
-    project:           Optional[str] = None
+    # Parsed by POSITION from the 4-line "User Notes" block BW writes
-    client:            Optional[str] = None
+    # between the `Units :` and `Geo Range :` lines.  Position-based so
-    operator:          Optional[str] = None         # User Name
+    # the values populate correctly even when an operator renames the
-    sensor_location:   Optional[str] = None         # Seis Loc
+    # labels in Blastware's Compliance Setup → Notes tab (the 4 labels
+    # are user-editable, e.g. "Seis Loc:" → "Building:" → "Site Address:").
+    # The original labels BW wrote are preserved in `user_note_labels`
+    # so terra-view can render them as the operator named them.
+    project:           Optional[str] = None     # position 1 (BW default label "Project:")
+    client:            Optional[str] = None     # position 2 (BW default label "Client:")
+    operator:          Optional[str] = None     # position 3 (BW default label "User Name:")
+    sensor_location:   Optional[str] = None     # position 4 (BW default label "Seis Loc:")
+
+    # Maps canonical slot name → the literal label BW wrote in the ASCII
+    # export.  Empty if the User Notes block wasn't present.  Example
+    # when the operator renamed slot 4 to "Building:":
+    #     {"project": "Project:", "client": "Client:",
+    #      "operator": "User Name:", "sensor_location": "Building:"}
+    user_note_labels:  Dict[str, str] = field(default_factory=dict)
 
     # ── Geo channel scaling ─────────────────────────────────────────────────
     geo_range_ips:     Optional[float] = None       # 10.000 / 1.250
@@ -265,59 +279,23 @@ def _parse_monitor_ts(s: str) -> Optional[datetime.datetime]:
         return None
 
 
-# ── Operator-field label normalisation ──────────────────────────────────────
+# ── User-notes positional slot map ──────────────────────────────────────────
 #
-# BW has used different label spellings across versions and recording
+# Blastware's Compliance Setup → Notes tab shows four operator-supplied
-# modes for the same operator-supplied fields:
+# fields whose LABELS the operator can rename (see screenshot in
+# project archive).  Defaults are "Project:" / "Client:" /
+# "User Name:" / "Seis Loc:", but an operator using a different
+# convention can rename them to anything ("Building:", "Site:",
+# "Address:", etc.).  The ASCII export reflects whatever the operator
+# typed, so label-based matching is fragile.
 #
-#   project:         "Project:" / "Project"
+# What IS reliable: BW always writes the 4 user-notes lines in the
-#   client:          "Client:"  / "Client"
+# same order, contiguously between the `Units :` line and the
-#   operator:        "User Name:" / "User Name"
+# `Geo Range :` line.  We parse them by POSITION and preserve the
-#   sensor_location: "Seis Loc:" / "Seis. Location" / "Seis Location"
+# operator's labels in `report.user_note_labels` so terra-view can
-#                  / "Sensor Location"
+# render them as the operator intended.
-#
-# Per user feedback ("the tags themselves dont matter a ton, what
-# matters is the field"), we normalise labels at lookup time so the
-# value-extraction works regardless of which spelling BW happens to
-# emit on a given machine.
-#
-# To add a new variant: edit `_OPERATOR_LABEL_MAP` — single source of
-# truth.  Keys are normalised forms (lowercase, trailing colon and
-# period stripped, internal whitespace collapsed); values are
-# attribute names on `BwAsciiReport`.
 
-_OPERATOR_LABEL_MAP = {
+_USER_NOTE_SLOTS = ("project", "client", "operator", "sensor_location")
-    # project
-    "project":          "project",
-    # client
-    "client":           "client",
-    # operator
-    "user name":        "operator",
-    # sensor location — most variants of "Seis*" + "Sensor Location"
-    "seis loc":         "sensor_location",
-    "seis. loc":        "sensor_location",
-    "seis. location":   "sensor_location",
-    "seis location":    "sensor_location",
-    "sensor location":  "sensor_location",
-}
-
-
-def _normalise_label_for_lookup(key: str) -> str:
-    """Normalise a label for the operator-field lookup.
-
-    Strips a trailing colon and/or period, collapses internal
-    whitespace runs, and lowercases.  So all of:
-
-      "Seis Loc:"
-      "Seis. Location"
-      "seis  location"
-      "Sensor Location"
-
-    map to canonical forms in `_OPERATOR_LABEL_MAP`.
-    """
-    s = key.strip().rstrip(":").rstrip(".").strip()
-    s = _KEY_NORMALISE_RE.sub(" ", s)
-    return s.lower()
 
 
 # ─────────────────────────────────────────────────────────────────────────────
@@ -349,6 +327,15 @@ def parse_report(text: Union[str, bytes], *, parse_samples: bool = False) -> BwA
     event_time_str: Optional[str] = None
     event_date: Optional[datetime.date] = None
 
+    # User-notes block detection.  We enter the block after parsing
+    # the "Units :" line and exit on the "Geo Range :" line.  Inside,
+    # the first 4 unmatched `<label> : <value>` lines are assigned to
+    # the 4 canonical operator-supplied slots by POSITION (project,
+    # client, operator, sensor_location) regardless of what the
+    # operator named the labels in BW's Compliance Setup → Notes tab.
+    in_user_notes_block = False
+    user_note_position = 0
+
     while i < n:
         raw_line = lines[i]
         i += 1
@@ -399,18 +386,28 @@ def parse_report(text: Union[str, bytes], *, parse_samples: bool = False) -> BwA
         elif key == "Battery Level":        report.battery_volts = _parse_number(value)
         elif key == "Calibration":
             report.calibration_date, report.calibration_by = _parse_calibration(value)
-        elif key == "Units":                report.units = value
+        elif key == "Units":
+            report.units = value
+            # Entering the user-notes block.  Next ~4 lines until
+            # "Geo Range :" are the operator-supplied notes.
+            in_user_notes_block = True
+            user_note_position = 0
 
-        # Operator-supplied labels (Project / Client / User Name /
+        elif key == "Geo Range":
-        # Seis Loc) — BW writes these with assorted spellings across
+            # Exiting the user-notes block.
-        # firmware versions and recording modes (e.g. "Seis Loc:" on
+            in_user_notes_block = False
-        # waveform exports vs "Seis. Location" on histogram exports).
+            report.geo_range_ips = _parse_number(value)
-        # The label normaliser absorbs all known variants; see
+
-        # `_OPERATOR_LABEL_MAP` above for the dispatch table.
+        # User-notes block: assign by position (operator may have
-        elif (slot := _OPERATOR_LABEL_MAP.get(_normalise_label_for_lookup(key))):
+        # renamed the labels, so we don't trust them).  Preserve the
+        # original labels in `user_note_labels` for downstream UIs
+        # (terra-view) that want to display them as the operator
+        # named them.
+        elif in_user_notes_block and user_note_position < len(_USER_NOTE_SLOTS):
+            slot = _USER_NOTE_SLOTS[user_note_position]
             setattr(report, slot, value)
-
+            report.user_note_labels[slot] = key
-        elif key == "Geo Range":            report.geo_range_ips = _parse_number(value)
+            user_note_position += 1
 
         # ── Per-channel stats ────────────────────────────────────────────────
         # All match the pattern "{Channel} <stat-name>"

tests/test_bw_ascii_report.py

@@ -259,53 +259,135 @@ def test_parse_handles_micl_double_space_in_key():
     assert r.mic.zc_freq_hz     == pytest.approx(51.0)
 
 
-# ── Operator-field label normalisation ──────────────────────────────────────
+# ── Position-based user-notes parsing ───────────────────────────────────────
+#
+# The 4 user-supplied note slots (Project / Client / User Name / Seis Loc
+# by default) have OPERATOR-EDITABLE labels in BW's Compliance Setup →
+# Notes tab.  An operator could rename them to "Building:", "Site:",
+# "Address:", etc. and the ASCII export would write those labels
+# verbatim.  We parse by POSITION between the `Units :` and `Geo Range :`
+# anchors, NOT by matching the label text.
 
 
-@pytest.mark.parametrize("label,expected_field,expected_value", [
+def _wrap_user_notes(*lines: str) -> str:
-    # project — both with-colon and bare
+    """Helper: wrap N user-note lines in the minimal context the parser
-    ("Project:", "project", "Test4-21-26"),
+    needs (`Units :` opens the block, `Geo Range :` closes it)."""
-    ("Project",  "project", "Test4-21-26"),
+    body = ['"Units : in/s and dB(L)"']
-    # client
+    body.extend('"' + l + '"' for l in lines)
-    ("Client:",  "client",  "Acme Inc"),
+    body.append('"Geo Range : 10.000 in/s"')
-    ("Client",   "client",  "Acme Inc"),
+    return "\n".join(body) + "\n"
-    # operator (User Name)
+
-    ("User Name:", "operator", "Brian"),
+
-    ("User Name",  "operator", "Brian"),
+def test_user_notes_default_labels_populate_by_position():
-    # sensor_location — every Seis*/Sensor Location variant we know about
+    """The BW-default labels (Project / Client / User Name / Seis Loc)
-    ("Seis Loc:",       "sensor_location", "Catbed"),
+    populate the four canonical slots in order."""
-    ("Seis Loc",        "sensor_location", "Catbed"),
+    r = parse_report(_wrap_user_notes(
-    ("Seis. Location",  "sensor_location", "Catbed"),
+        "Project: : Test4-21-26",
-    ("Seis Location",   "sensor_location", "Catbed"),
+        "Client: : Acme Inc",
-    ("Sensor Location", "sensor_location", "Catbed"),
+        "User Name: : Brian",
-])
+        "Seis Loc: : Catbed",
-def test_operator_label_variants_route_to_correct_field(label, expected_field, expected_value):
+    ))
-    """All known label spellings of the operator-supplied fields route
+    assert r.project          == "Test4-21-26"
-    to the same dataclass attribute."""
+    assert r.client           == "Acme Inc"
-    text = '"{} : {}"\n'.format(label, expected_value)
+    assert r.operator         == "Brian"
+    assert r.sensor_location  == "Catbed"
+    assert r.user_note_labels == {
+        "project":         "Project:",
+        "client":          "Client:",
+        "operator":        "User Name:",
+        "sensor_location": "Seis Loc:",
+    }
+
+
+def test_user_notes_operator_renamed_labels_still_populate():
+    """If the operator renames the labels in BW's UI (e.g. "Seis Loc:"
+    → "Building:"), the values STILL populate the canonical slots by
+    position — and the operator's labels are preserved in
+    `user_note_labels` for terra-view to display."""
+    r = parse_report(_wrap_user_notes(
+        "Building : Main Office",
+        "Project Manager : Brian",
+        "Inspector : Claude",
+        "Site Address : 123 Main St",
+    ))
+    assert r.project         == "Main Office"
+    assert r.client          == "Brian"
+    assert r.operator        == "Claude"
+    assert r.sensor_location == "123 Main St"
+    assert r.user_note_labels == {
+        "project":         "Building",
+        "client":          "Project Manager",
+        "operator":        "Inspector",
+        "sensor_location": "Site Address",
+    }
+
+
+def test_user_notes_with_histogram_label_spelling():
+    """Histogram exports use 'Seis. Location:' (with period and colon)
+    instead of 'Seis Loc:'.  Position-based parsing handles both."""
+    r = parse_report(_wrap_user_notes(
+        "Project: : Plum Cont.- Rainbow Run",
+        "Client: : Plum Contracting In.c",
+        "User Name: : Terra-Mechanics Inc.",
+        "Seis. Location: : Loc #1 - 2652 Hepner",
+    ))
+    assert r.project == "Plum Cont.- Rainbow Run"
+    assert r.client == "Plum Contracting In.c"
+    assert r.operator == "Terra-Mechanics Inc."
+    assert r.sensor_location == "Loc #1 - 2652 Hepner"
+    # And the histogram's specific label spelling is preserved
+    assert r.user_note_labels["sensor_location"] == "Seis. Location:"
+
+
+def test_user_notes_outside_block_are_ignored():
+    """Lines that look like user-notes but appear OUTSIDE the
+    Units→Geo Range range don't get assigned to user-note slots."""
+    # No Units anchor — these lines shouldn't populate user-note slots
+    text = (
+        '"Serial Number : BE11529"\n'
+        '"Project: : SHOULD NOT POPULATE"\n'
+    )
     r = parse_report(text)
-    assert getattr(r, expected_field) == expected_value, (label, expected_field)
+    assert r.serial == "BE11529"
+    assert r.project is None
 
 
-def test_label_normalisation_is_case_insensitive():
+def test_user_notes_partial_block_only_fills_present_slots():
-    """Lowercase / uppercase / mixed-case labels all hit the same slot."""
+    """If BW writes fewer than 4 user-notes (e.g. operator disabled
-    for label in ("seis loc", "SEIS LOC", "SeIs LoC"):
+    Extended Notes mid-block), only the present positions populate;
-        text = '"{} : Catbed"\n'.format(label)
+    later slots stay None."""
-        r = parse_report(text)
+    r = parse_report(_wrap_user_notes(
-        assert r.sensor_location == "Catbed", label
+        "Project: : Just-a-project",
+        "Client: : Just-a-client",
+    ))
+    assert r.project == "Just-a-project"
+    assert r.client  == "Just-a-client"
+    assert r.operator is None
+    assert r.sensor_location is None
 
 
-def test_label_normalisation_collapses_extra_whitespace():
+def test_user_notes_extra_lines_beyond_four_are_dropped():
-    """Internal whitespace runs in labels are collapsed before lookup."""
+    """If somehow more than 4 lines appear in the user-notes block
-    text = '"Seis  Loc : Catbed"\n'   # two spaces between "Seis" and "Loc"
+    (e.g. BW adds an Extended Notes line), only the first 4 are
-    r = parse_report(text)
+    captured — slots 5+ have nowhere to go."""
-    assert r.sensor_location == "Catbed"
+    r = parse_report(_wrap_user_notes(
+        "L1 : v1",
+        "L2 : v2",
+        "L3 : v3",
+        "L4 : v4",
+        "L5 : v5",   # ignored — no fifth slot
+    ))
+    assert r.project         == "v1"
+    assert r.client          == "v2"
+    assert r.operator        == "v3"
+    assert r.sensor_location == "v4"
+    # 5th label not captured
+    assert "L5" not in r.user_note_labels.values()
 
 
 def test_real_histogram_fixture_populates_sensor_location():
-    """End-to-end: the histogram fixture from example-events/histogram/
+    """End-to-end: the histogram fixture uses 'Seis. Location:' — must
-    uses 'Seis. Location' (with period) and must successfully populate
+    successfully populate sensor_location via position-based parsing."""
-    sensor_location after the label-normalisation fix."""
     fixture_dir = (
         Path(__file__).parent.parent / "example-events" / "histogram"
     )
@@ -316,10 +398,9 @@ def test_real_histogram_fixture_populates_sensor_location():
         pytest.skip("no histogram TXT in fixture dir")
 
     r = parse_report_file(txt)
-    # The histogram TXTs verified to use "Seis. Location" — should now
-    # populate sensor_location instead of being silently dropped.
     assert r.sensor_location is not None
     assert len(r.sensor_location) > 0
+    assert r.user_note_labels.get("sensor_location") is not None
     # Sanity: other shared fields still parse correctly
     assert r.serial is not None
     assert r.serial.startswith("BE")