feat(protocol): implement v0.14.0 SUB 5A protocol rewrite with enhanced chunk handling and new helpers

test: add regression tests for v0.14.x SUB 5A protocol fixes
refactor(logging): change warning logs to debug for less verbosity in write_blastware_file

CHANGELOG.md

@@ -121,6 +121,65 @@ All notable changes to seismo-relay are documented here.
 
 ---
 
+## v0.14.0 — 2026-05-02
+
+### Changed (major rewrite)
+
+- **`read_bulk_waveform_stream` — STRT-bounded chunk walk.**  Replaces the
+  earlier `0x0400`-step / `max(key4[2:4], 0x0400)` chunk-counter formula,
+  which over-read ~5× past the actual event end into post-event circular-
+  buffer garbage.  The new walk:
+
+    1. Probe at `counter = start_offset` (event 1: `0x0000`; event N:
+       `cur_key[2:4]`).
+    2. Parse `end_offset` from the STRT record at `data[17]` of the probe
+       response (`end_key[2:4]` field).
+    3. For event 1 only, read the two fixed metadata pages at counter
+       `0x1002` and `0x1004` — these contain the global session-start
+       compliance setup (Project / Client / User Name / Seis Loc /
+       Extended Notes ASCII strings).  Continuation events skip these
+       (BW caches them across the session).
+    4. Walk sample chunks at **`0x0200` increments (NOT `0x0400`)**, bounded
+       by `end_offset` — the loop exits when
+       `next_chunk_counter + 0x0200 > end_offset`.
+    5. Send the proper TERM frame (see new `bulk_waveform_term_v2()`) with
+       `offset_word = end_offset - next_boundary` and
+       `params[2:4] = next_boundary BE`.  The TERM response carries the
+       partial last chunk + 26-byte file footer.
+
+- **New helpers:** `bulk_waveform_term_v2(key4, end_offset, last_chunk_counter)`
+  and `parse_strt_end_offset(a5_data)` in `minimateplus.framing`.
+
+- **`stop_after_metadata` / `extra_chunks_after_metadata` kwargs are now
+  no-ops** under the v0.14.x walk.  They are retained on the
+  `read_bulk_waveform_stream` signature for backward compatibility but log a
+  DEBUG line when set.  The old "scan for `b'Project:'` and stop one chunk
+  later" workaround is obsolete — the loop is deterministically bounded by
+  the STRT-derived `end_offset`.
+
+- **Project / Client / User Name / Seis Loc string source corrected.**
+  These come from the dedicated metadata pages at counter `0x1002` /
+  `0x1004`, not from "A5 frame 7" of the sample-chunk stream.  The
+  earlier "A5 frame 7" claim was an artifact of the broken `0x0400`-step
+  walk where the bad counter formula coincidentally landed sample-chunk
+  fi=7 on top of the 0x1002 metadata page.
+
+### Verified
+
+- Three independent BW MITM captures (4-27-26 + 5-1-26 + 5-4-26) confirm
+  the new walk matches BW's behaviour event-for-event.
+- `end_offset` values verified across 3 events: `0x1ABE` (4-27-26 2-sec),
+  `0x21F2` (5-1-26 3-sec), `0x417E` (5-1-26 event-2).
+
+### Notes
+
+- Earlier v0.13.0 / v0.13.1 / v0.13.2 entries describe partial steps along
+  the way (some of the file builder fixes, filename bugs, etc.) that were
+  superseded by the full rewrite.  Treat this v0.14.0 entry as the
+  definitive landing point for the corrected SUB 5A protocol.
+
+---
+
 ## v0.14.1 — 2026-05-04
 
 ### Fixed