Revert "fix: improve metadata frame detection and update version to v0.12.1"

This reverts commit ad7b064b67.

minimateplus/client.py

@@ -76,22 +76,6 @@ _COMPLIANCE_SLOT_SIZE    = 64
 _COMPLIANCE_VALUE_OFFSET = 22
 _COMPLIANCE_VALUE_MAX    = _COMPLIANCE_SLOT_SIZE - _COMPLIANCE_VALUE_OFFSET  # 42
 
-# Needles used to identify the 5A metadata frame in _decode_a5_waveform.
-# The frame carries compliance-setup ASCII strings embedded in the bulk stream.
-# Checking multiple needles is required because devices with unconfigured
-# Project/Client/etc. fields omit those label strings entirely — the sole
-# reliable anchor then becomes b"Geo: " (always present, geo threshold is
-# required for monitoring).  We also check db (full rsp.data) rather than
-# db[7:] to avoid any off-by-7 miss if a label landed in the prefix bytes.
-_METADATA_FRAME_NEEDLES: tuple[bytes, ...] = (
-    b"Project:",
-    b"Client:",
-    b"User Name:",
-    b"Seis Loc:",
-    b"Extended Notes",
-    b"Geo: ",
-)
-
 
 # ── MiniMateClient ────────────────────────────────────────────────────────────
 
@@ -1472,29 +1456,14 @@ def _decode_a5_waveform(
                 wave[:24].hex(' '),
             )
 
-        # Metadata frame: contains compliance-setup ASCII strings.
+        # Metadata frame: contains "Project:", "Client:", etc. strings.
         # Originally assumed to be always fi==7 (A5[7] in 4-2-26 blast capture),
         # but confirmed variable position — it appears at whatever chunk index the
         # device places it (observed at fi=6 for desk-thump events 2026-04-14).
-        #
-        # Detection uses MULTIPLE needles against the full frame bytes (db, NOT w)
-        # because:
-        #   1. Devices with no Project/Client/etc. configured omit those label strings
-        #      entirely — checking only b"Project:" misses the frame for unconfigured
-        #      units (confirmed 2026-04-15: Brian's device had no fields set, so
-        #      "Project:" was absent and the frame was decoded as ADC samples, causing
-        #      the serial number bytes "BE11529\0" to appear as waveform data).
-        #   2. Checking db (full rsp.data) rather than w (db[7:]) eliminates any
-        #      off-by-7 risk if a label were to land in the first 7 bytes.
-        #   3. b"Geo: " is always present (geo threshold is required for monitoring)
-        #      and serves as the universal fallback anchor.
-        elif any(needle in db for needle in _METADATA_FRAME_NEEDLES):
-            log.info(
-                "_decode_a5_waveform: fi=%d skipped (metadata frame, "
-                "needle=%r)",
-                fi,
-                next(n for n in _METADATA_FRAME_NEEDLES if n in db),
-            )
+        # Skip ANY frame whose raw bytes contain b"Project:" — this is the same
+        # anchor used by stop_after_metadata in read_bulk_waveform_stream.
+        elif b"Project:" in w:
+            log.info("_decode_a5_waveform: fi=%d skipped (metadata frame)", fi)
             continue
 
         # Terminator frames have page_key=0x0000 and are excluded upstream