feat: Lower adult monthly fee to 700 CZK from April 2026

Pin Sep 2025 – Feb 2026 at 750 CZK in ADULT_FEE_MONTHLY_RATE so
historical billing is unchanged; new default 700 CZK applies to
2026-04 onward. March 2026 stays at 350.

Co-Authored-By: Claude Opus 4.7 <noreply@anthropic.com>

CHANGELOG.md

@@ -1,5 +1,16 @@
 # Changelog
 
+## 2026-05-04 23:08 CEST — fix: payment inference exact-match short-circuit
+
+- `match_members()` now short-circuits on whole-word full-name hits; nickname/partial checks only run when no full name is present.
+- Replaced bare `in` substring checks with `_word_in()` word-boundary regex throughout, closing the class of bugs where a short nickname (e.g. `tov`) matches inside another member's surname (`ottova`).
+- Added `tests/test_match_members.py` (6 cases). Affects `scripts/match_payments.py`.
+
+## 2026-05-04 23:08 CEST — feat: lower adult monthly fee to 700 CZK from April 2026
+
+- `ADULT_FEE_DEFAULT` reduced from 750 → 700 CZK.
+- `ADULT_FEE_MONTHLY_RATE` now pins Sep 2025 – Feb 2026 at 750 to preserve historical billing; Mar 2026 stays 350; Apr–May 2026 at 700. Affects `scripts/attendance.py`.
+
 ## 2026-05-04 12:02 CEST — Go rewrite M1: skeleton + tooling
 
 - Created `go/` tree with module `fuj-management/go` (Go 1.26).

scripts/attendance.py

@@ -10,10 +10,18 @@ from config import ATTENDANCE_SHEET_ID as SHEET_ID, JUNIOR_SHEET_GID
 EXPORT_URL = f"https://docs.google.com/spreadsheets/d/{SHEET_ID}/export?format=csv&gid=0"
 JUNIOR_EXPORT_URL = f"https://docs.google.com/spreadsheets/d/{SHEET_ID}/export?format=csv&gid={JUNIOR_SHEET_GID}"
 
-ADULT_FEE_DEFAULT = 750  # CZK, for 2+ practices in a month
+ADULT_FEE_DEFAULT = 700  # CZK, for 2+ practices in a month
 ADULT_FEE_SINGLE = 200  # CZK, for exactly 1 practice in a month
 ADULT_FEE_MONTHLY_RATE = {
-    "2026-03": 350
+    "2025-09": 750,
+    "2025-10": 750,
+    "2025-11": 750,
+    "2025-12": 750,
+    "2026-01": 750,
+    "2026-02": 750,
+    "2026-03": 350,
+    "2026-04": 700,
+    "2026-05": 700,
 }
 
 JUNIOR_FEE_DEFAULT = 500  # CZK for 2+ practices