chore: tick M2.5 in progress tracker + CHANGELOG entry

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

CHANGELOG.md

@@ -1,5 +1,30 @@
 # Changelog
 
+## 2026-05-06 09:38 CEST — feat(go/M2.5): port domain/money.ParseCZK
+
+- New `go/internal/domain/money` package with `ParseCZK(string) (float64, error)` ported from `scripts/infer_payments.py` `parse_czk_amount`.
+- Preserves the Czech-locale heuristic: comma → decimal sep; 2+ dots → thousand seps; single dot → decimal (so `"1.500"` → `1.5`).
+- Returns `(0, ErrInvalidAmount)` on parse failure; callers wanting Python's silent-zero contract use `v, _ := ParseCZK(s)`.
+- 15 table-driven tests plus a silent-zero contract test; all expected values verified against live Python on 2026-05-06.
+
+## 2026-05-06 09:24 CEST — feat(go/M2.3+M2.4): port domain/fees.CalculateFee and CalculateJuniorFee
+
+- New `go/internal/domain/fees` package with adult and junior fee calculators ported from `scripts/attendance.py`.
+- `CalculateFee(count, monthKey) int` — `0→0`, `1→200`, `2+→AdultFeeMonthlyRate[month]` (fallback 700 CZK).
+- `CalculateJuniorFee(count, monthKey) Expected` — `0→{0}`, `1→{Unknown:true}` (the `"?"` sentinel, now strictly typed), `2+→JuniorFeeMonthlyRate[month]` (fallback 500 CZK).
+- 20 table-driven tests, all verified against live Python; `-race` clean; `golangci-lint` clean.
+
+## 2026-05-06 00:07 CEST — feat(go/M2.2): port czech.ParseMonthReferences
+
+- `internal/domain/czech.ParseMonthReferences`: three-pass regex (numeric slash, dot, Czech month names) with range wrap-around and `m≥10 → previousYear` heuristic, byte-equivalent to Python.
+- 35 table-driven tests; all expected outputs verified against live Python before locking (addresses risk #4 from the rewrite plan).
+
+## 2026-05-05 23:33 CEST — feat(go/M2.1): port czech.Normalize
+
+- First M2 pure-domain task: `internal/domain/czech.Normalize` (NFKD + Mn-strip + lowercase), byte-equivalent to Python `czech_utils.normalize`.
+- Adds `golang.org/x/text v0.36.0` as first external Go dependency.
+- 13-case table-driven test, all spot-checked against Python before locking.
+
 ## 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.

CLAUDE.md

@@ -64,13 +64,13 @@ Fio Bank API               ──► sync_fio_to_sheets.py ──► Google Shee
 ### Member tiers
 
 Tiers are set in column B of the attendance sheet:
-- `A` — Adult, pays fees (750 CZK/month for 2+ sessions, 200 CZK for exactly 1)
+- `A` — Adult, pays fees (per-month rate from `ADULT_FEE_MONTHLY_RATE`, fallback 700 CZK for 2+ sessions; 200 CZK for exactly 1)
 - `J` — Junior attending adult practices; their attendance is merged with the junior sheet
 - `X` — Excluded from junior fee calculation (coaches, etc.)
 
 ### Fee calculation
 
-- Adults: 0 sessions → 0, 1 session → 200 CZK, 2+ sessions → monthly rate (default 750 CZK)
+- Adults: 0 sessions → 0, 1 session → 200 CZK, 2+ sessions → monthly rate (default 700 CZK)
 - Juniors: 0 → 0, 1 → `"?"` (manual review required), 2+ → monthly rate (default 500 CZK)
 - Per-member per-month overrides live in the `exceptions` tab of the payments sheet (columns: Name, Period YYYY-MM, Amount, Note). Exceptions are keyed by `(normalize(name), normalize(period))`.
 
@@ -92,6 +92,45 @@ Tiers are set in column B of the attendance sheet:
 
 `/qr?account=…&amount=…&message=…` generates a Czech QR Platba PNG (SPD format).
 
+## Branching & merge requests
+
+The remote is Gitea (`gitea.home.hrajfrisbee.cz/kacerr/fuj-management`).
+For **features**, do not commit to `main` directly. Use a branch + merge
+request flow:
+
+1. **Create a branch off `main`** before starting work:
+   - `feat/<slug>` for features (e.g. `feat/qr-code-overlay`)
+   - `fix/<slug>` for bug-fix branches the user explicitly asks for
+   - `<slug>` is short kebab-case
+2. **Commit on the branch** following the existing commit conventions
+   (Co-Authored-By trailer, etc.).
+3. **Push the branch** to `origin` with `-u` so it tracks.
+4. **Open the MR with `tea`** rather than printing a compare URL:
+
+   ```bash
+   tea pr create \
+     --title "<short title>" \
+     --description "<body>" \
+     --base main \
+     --head <branch>
+   ```
+
+   `tea` is already authenticated against the Gitea instance; just run it.
+   Print the resulting PR URL for the user. If `tea` is unavailable for
+   some reason, fall back to printing the compare URL
+   (`https://gitea.home.hrajfrisbee.cz/kacerr/fuj-management/compare/main...<branch>`)
+   and let the user open the MR manually.
+5. **Do not merge or delete the branch** from the CLI — neither via `tea`,
+   `gh`, nor `git push --delete`. The user does that in Gitea.
+
+**Exceptions — when committing straight to `main` is fine:**
+- Small bug fixes / hotfixes the user describes as such.
+- Typo / comment / formatting tweaks.
+- Edits the user explicitly says to push to `main`.
+
+When uncertain whether something is a feature or a small fix, ask before
+committing.
+
 ## Git Commits
 
 When making git commits, always append yourself as co-author trailer to the end of the commit message to indicate AI assistance

app.py

@@ -22,7 +22,7 @@ from config import (
     BANK_ACCOUNT, CREDENTIALS_PATH,
 )
 from attendance import get_members_with_fees, get_junior_members_with_fees, ADULT_MERGED_MONTHS, JUNIOR_MERGED_MONTHS
-from match_payments import reconcile, fetch_sheet_data, fetch_exceptions, normalize
+from match_payments import reconcile, fetch_sheet_data, fetch_exceptions, normalize, canonical_member_key
 from cache_utils import get_sheet_modified_time, read_cache, write_cache, _LAST_CHECKED, flush_cache
 from sync_fio_to_sheets import sync_to_sheets
 from infer_payments import infer_payments
@@ -57,6 +57,25 @@ def get_month_labels(sorted_months, merged_months):
             labels[m] = dt.strftime("%b %Y")
     return labels
 
+def group_payments_by_person(transactions, member_names=None):
+    canonical_by_key = (
+        {canonical_member_key(n): n for n in member_names} if member_names else {}
+    )
+    grouped = {}
+    for tx in transactions:
+        person = str(tx.get("person", "")).strip()
+        if not person:
+            continue
+        for p in person.split(","):
+            p = re.sub(r"\[\?\]\s*", "", p).strip()
+            if not p:
+                continue
+            key = canonical_by_key.get(canonical_member_key(p), p)
+            grouped.setdefault(key, []).append(tx)
+    for rows in grouped.values():
+        rows.sort(key=lambda t: str(t.get("date", "")), reverse=True)
+    return grouped
+
 def warmup_cache():
     """Pre-fetch all cached data so first request is fast."""
     logger = logging.getLogger(__name__)
@@ -304,6 +323,7 @@ def adults_view():
     unmatched = result["unmatched"]
     import json
     
+    raw_payments_by_person = group_payments_by_person(transactions, [name for name, _, _ in members])
     record_step("process_data")
 
     return render_template(
@@ -314,6 +334,7 @@ def adults_view():
         totals=formatted_totals,
         member_data=json.dumps(result["members"]),
         month_labels_json=json.dumps(month_labels),
+        raw_payments_json=json.dumps(raw_payments_by_person),
         credits=credits,
         debts=debts,
         unmatched=unmatched,
@@ -506,6 +527,7 @@ def juniors_view():
     credits = sorted([{"name": n, "amount": junior_settled_balance(n)} for n in junior_all_names if junior_settled_balance(n) > 0], key=lambda x: x["name"])
     debts = sorted([{"name": n, "amount": abs(junior_settled_balance(n))} for n in junior_all_names if junior_settled_balance(n) < 0], key=lambda x: x["name"])
     unmatched = result["unmatched"]
+    raw_payments_by_person = group_payments_by_person(transactions, [name for name, _, _ in adapted_members])
     import json
 
     record_step("process_data")
@@ -518,6 +540,7 @@ def juniors_view():
         totals=formatted_totals,
         member_data=json.dumps(result["members"]),
         month_labels_json=json.dumps(month_labels),
+        raw_payments_json=json.dumps(raw_payments_by_person),
         credits=credits,
         debts=debts,
         unmatched=unmatched,
@@ -535,29 +558,24 @@ def payments():
     
     transactions = get_cached_data("payments_transactions", PAYMENTS_SHEET_ID, fetch_sheet_data, PAYMENTS_SHEET_ID, credentials_path)
     record_step("fetch_payments")
-    
-    # Group transactions by person
-    grouped = {}
+
+    adults_data = get_cached_data("attendance_regular", ATTENDANCE_SHEET_ID, get_members_with_fees)
+    juniors_data = get_cached_data("attendance_juniors", ATTENDANCE_SHEET_ID, get_junior_members_with_fees)
+    member_names = []
+    if adults_data:
+        member_names.extend(name for name, _, _ in adults_data[0])
+    if juniors_data:
+        member_names.extend(name for name, _, _ in juniors_data[0])
+
+    grouped = group_payments_by_person(transactions, member_names)
+    # payments page also groups unmatched rows under a fallback key
     for tx in transactions:
-        person = str(tx.get("person", "")).strip()
-        if not person:
-            person = "Unmatched / Unknown"
-            
-        # Handle multiple people (comma separated)
-        people = [p.strip() for p in person.split(",") if p.strip()]
-        for p in people:
-            # Strip markers
-            clean_p = re.sub(r"\[\?\]\s*", "", p)
-            if clean_p not in grouped:
-                grouped[clean_p] = []
-            grouped[clean_p].append(tx)
-            
-    # Sort people and their transactions
+        if not str(tx.get("person", "")).strip():
+            grouped.setdefault("Unmatched / Unknown", []).append(tx)
+    for rows in grouped.values():
+        rows.sort(key=lambda t: str(t.get("date", "")), reverse=True)
     sorted_people = sorted(grouped.keys())
-    for p in sorted_people:
-        # Sort by date descending
-        grouped[p].sort(key=lambda x: str(x.get("date", "")), reverse=True)
-        
+
     record_step("process_data")
     return render_template(
         "payments.html",

docs/plans/2026-05-03-2349-go-backend-rewrite-progress.md

@@ -4,7 +4,7 @@ Companion to [2026-05-03-2349-go-backend-rewrite.md](2026-05-03-2349-go-backend-
 
 **Current milestone:** M2 — Pure-domain helpers
 **Started:** 2026-05-04
-**Last updated:** 2026-05-04
+**Last updated:** 2026-05-06
 
 ## How to use
 
@@ -44,11 +44,11 @@ Goal: every pure function from the Python backend exists in Go with a parity tes
 
 Each task: port the function, write Go unit tests for fresh cases, hook into the Tier-1 parity runner.
 
-- [ ] **M2.1** `domain/czech.Normalize` — port [czech_utils.py](scripts/czech_utils.py) `normalize` (NFKD + combining-mark strip + lowercase)
-- [ ] **M2.2** `domain/czech.ParseMonthReferences` — port `parse_month_references` (45 month declensions, range wrap, year inference)
-- [ ] **M2.3** `domain/fees.CalculateFee` — port [attendance.py](scripts/attendance.py) `calculate_fee` (constants table)
-- [ ] **M2.4** `domain/fees.CalculateJuniorFee` — port `calculate_junior_fee` with `Expected{Value int; Unknown bool}` for the `"?"` sentinel
-- [ ] **M2.5** `domain/money.ParseCZK` — port [infer_payments.py](scripts/infer_payments.py) `parse_czk_amount` (Czech locale: comma decimal, dot/space thousand separators)
+- [x] **M2.1** `domain/czech.Normalize` — port [czech_utils.py](scripts/czech_utils.py) `normalize` (NFKD + combining-mark strip + lowercase) — `20ade6d`
+- [x] **M2.2** `domain/czech.ParseMonthReferences` — port `parse_month_references` (45 month declensions, range wrap, year inference) — `0a8017f`
+- [x] **M2.3** `domain/fees.CalculateFee` — port [attendance.py](scripts/attendance.py) `calculate_fee` (constants table) — `0fc3b6d`
+- [x] **M2.4** `domain/fees.CalculateJuniorFee` — port `calculate_junior_fee` with `Expected{Value int; Unknown bool}` for the `"?"` sentinel — `0fc3b6d`
+- [x] **M2.5** `domain/money.ParseCZK` — port [infer_payments.py](scripts/infer_payments.py) `parse_czk_amount` (Czech locale: comma decimal, dot/space thousand separators) — `d24d205`
 - [ ] **M2.6** `domain/synch.GenerateSyncID` — port [sync_fio_to_sheets.py](scripts/sync_fio_to_sheets.py) `generate_sync_id` (SHA-256, byte-stable hash; verify float string format against real sheet rows)
 - [ ] **M2.7** `domain/matching.BuildNameVariants` + `MatchMembers` — port `_build_name_variants` and `match_members` from [match_payments.py](scripts/match_payments.py) (auto vs review confidence, common-surname filter)
 - [ ] **M2.8** `domain/matching.InferTransactionDetails` — port `infer_transaction_details` (composes name + month parsing)

docs/plans/2026-05-05-1637-member-modal-raw-payments-debug.md

@@ -0,0 +1,99 @@
+# Member modal — raw payments debug list
+
+## Context
+
+When a payer's bank message doesn't follow our convention, [`infer_payments.py`](scripts/infer_payments.py) may map the transfer to the wrong period (or none), and today the member detail modal hides this — it only shows the post-allocation, per-month splits produced by [`reconcile()`](scripts/match_payments.py:295). To diagnose these cases the user needs to see the **original sheet rows** that were attributed to a member: full `Amount`, `Inferred Amount`, `Person`, `Purpose`, `Sender`, `Message`, `Bank ID`, `manual fix`. The list should be hidden by default and revealed by a small toggle, since it is only relevant during debugging.
+
+## Approach
+
+Reuse the grouping logic that already exists in the [`/payments` route](app.py:540-553): group raw `tx` dicts by parsed `Person`, expose that mapping to the modal, and render it on demand under a new collapsible section.
+
+### 1. Backend — group raw txs by member
+
+In [`app.py`](app.py):
+
+- Factor the existing per-person grouping in [`payments()`](app.py:530-568) into a small helper near the top of the file:
+  ```python
+  def group_payments_by_person(transactions):
+      grouped = {}
+      for tx in transactions:
+          person = str(tx.get("person", "")).strip()
+          if not person:
+              continue  # unmatched rows are not tied to a member
+          for p in person.split(","):
+              p = re.sub(r"\[\?\]\s*", "", p).strip()
+              if not p:
+                  continue
+              grouped.setdefault(p, []).append(tx)
+      for rows in grouped.values():
+          rows.sort(key=lambda t: str(t.get("date", "")), reverse=True)
+      return grouped
+  ```
+  Call it from [`payments()`](app.py:530), [`adults_view()`](app.py:160) and [`juniors_view()`](app.py:326) — the existing `payments()` body collapses to one line.
+
+- In `adults_view()` and `juniors_view()`, after `transactions = get_cached_data(...)`, build `raw_payments_by_person = group_payments_by_person(transactions)` and pass it to `render_template` as `raw_payments_json=json.dumps(raw_payments_by_person)`.
+
+- Note: rows where `Person` is empty are skipped on purpose — those have no member to attach to and are already shown by the dashboard's `Unmatched` block.
+
+### 2. Templates — add a collapsible raw section to the modal
+
+In [`templates/adults.html`](templates/adults.html) and [`templates/juniors.html`](templates/juniors.html), make the same structural and JS changes (the modal markup is mirrored in both files — `adults.html:677-682` and `juniors.html:658-663`).
+
+- Inject the new dataset alongside the existing `memberData`:
+  ```html
+  const rawPaymentsByPerson = {{ raw_payments_json| safe }};
+  ```
+  (next to [`adults.html:696`](templates/adults.html#L696)).
+
+- Add a new section directly **after** the Payment History block:
+  ```html
+  <div class="modal-section">
+      <div class="modal-section-title">
+          Raw Payments
+          <a href="#" id="rawPaymentsToggle" class="raw-toggle"
+             onclick="toggleRawPayments(event)">[show]</a>
+      </div>
+      <div id="modalRawList" class="tx-list" style="display: none;">
+          <!-- Filled by JS -->
+      </div>
+  </div>
+  ```
+  Add a small CSS rule for `.raw-toggle` (muted color, smaller font, `margin-left: 8px`) — a few lines next to the existing `.modal-section-title` style. Don't restyle the whole modal.
+
+- In `showMemberDetails(name)`:
+  - Reset the toggle to `[show]` and the `#modalRawList` to `display: none` on every open (so the state doesn't leak between members).
+  - Populate `#modalRawList` from `rawPaymentsByPerson[name] || []`. For each row render: `Date | Purpose` on the meta line, `Amount CZK` (with `Inferred: X CZK` annotation when `inferred_amount` differs from `amount`), `Sender`, `Person` (full string — useful when split between multiple people), `Message`, and a small footer with `Bank ID` and a `[manual fix]` marker if `manual_fix` is truthy. Reuse the existing `tx-item` / `tx-meta` / `tx-main` / `tx-msg` styles to match the rest of the modal.
+  - When the list is empty, render `<div style="color: #444; font-style: italic; padding: 10px 0;">No raw payments tied to this member.</div>` (same idiom used at [`adults.html:813`](templates/adults.html#L813)).
+
+- Add the toggle handler near `closeModal`:
+  ```js
+  function toggleRawPayments(ev) {
+      ev.preventDefault();
+      const list = document.getElementById('modalRawList');
+      const link = document.getElementById('rawPaymentsToggle');
+      const hidden = list.style.display === 'none';
+      list.style.display = hidden ? 'block' : 'none';
+      link.textContent = hidden ? '[hide]' : '[show]';
+  }
+  ```
+
+### 3. Why not extend `reconcile()` instead
+
+`reconcile()` already collapses each row into per-month allocated shares and drops `purpose`, `inferred_amount`, `bank_id`, `manual_fix`, and the gross `amount` ([trace](scripts/match_payments.py:436-469)). Carrying the raw `tx` through `reconcile()` would inflate the contract for every consumer when only the modal needs it. Grouping the already-fetched `transactions` list at the route level is one extra dict per request and reuses the cached payments data — no new sheet reads.
+
+## Critical files
+
+- [app.py](app.py) — add `group_payments_by_person()` helper; call it in `adults_view()`, `juniors_view()`, and `payments()`; pass `raw_payments_json` to the two dashboard templates.
+- [templates/adults.html](templates/adults.html) — modal section + JS + tiny CSS for the toggle link.
+- [templates/juniors.html](templates/juniors.html) — same changes as adults.html.
+
+## Verification
+
+1. `make web-debug` and open `http://localhost:5001/adults`.
+2. Pick a member known to have multiple payments (use the existing `/payments` page as a cross-reference).
+3. Click `[i]` → modal opens, raw list is hidden, link shows `[show]`. Click the link → list appears with the raw rows; click again → hides, link returns to `[show]`.
+4. Switch to another member via keyboard (ArrowDown) — the toggle resets to hidden and the list updates to the new member's rows (no leaking).
+5. Compare the raw rows in the modal against the `/payments` page grouping for the same person — same set of rows, same `Date`/`Amount`/`Message`.
+6. Pick a row with a non-conformant message (e.g. one where `Person` was inferred to multiple people) — confirm `Person` shows the full comma-separated string and `Inferred Amount` is visible when it differs from `Amount`.
+7. Repeat the click-through on `/juniors` to confirm parity.
+8. `make test` — no backend behavior change is expected, but run to catch template/route smoke breakage.

docs/plans/2026-05-05-1717-payment-person-name-canonicalization.md

@@ -0,0 +1,135 @@
+# Tolerate diacritic / case / whitespace mismatches between `Person` column and member names
+
+## Context
+
+For "Mária Maco" there is a payment row in the payments sheet with `Purpose = 2026-04`, but the modal for that member shows neither a paid 2026-04 cell **nor** a row in payment history. Both symptoms collapse to a single root cause in [`reconcile()`](scripts/match_payments.py#L295), confirmed by reading the code:
+
+- [`scripts/match_payments.py:404`](scripts/match_payments.py#L404) — `if member_name not in ledger:` is a **byte-exact** comparison. `member_name` is the `Person` cell from the payments sheet with only `.strip()` and `[?]` markers removed ([:349-353](scripts/match_payments.py#L349-L353)). `ledger` keys are the canonical names from the attendance sheet. There is no diacritic, case, or whitespace normalization on this path. (`czech_utils.normalize` is imported and used for the `exceptions` lookup at [:282-283 / :321-322](scripts/match_payments.py#L282-L322), but **not** for member-name matching.)
+- When a row falls through that check, it is appended to `unmatched` and never reaches `ledger[member_name][m]['paid']` or `['transactions']`. The dashboard's per-month "paid" cell stays unpaid, and because the modal's payment history is built from `data.months[m].transactions` ([`templates/adults.html:772-776`](templates/adults.html#L772-L776)), the row also disappears from the modal's history list.
+- The new "Raw Payments" debug section ([`templates/adults.html:861`](templates/adults.html#L861)) uses `rawPaymentsByPerson[name]`. Its keys come from [`group_payments_by_person()` in `app.py:60-73`](app.py#L60-L73), which also stores the **literal** `Person` string (only `.strip()` and `[?]` stripped). So if the attendance-sheet name and the `Person` cell differ at the byte level, that section also returns an empty list — which is why the user does not see the row anywhere in the modal.
+
+The most likely cause for "Mária Maco" specifically: the `Person` cell was typed (or pasted) without the `á` diacritic — `Maria Maco` vs `Mária Maco`. Other plausible variants the current code silently drops: case differences (`mária maco`), trailing/embedded extra whitespace, and NBSP characters.
+
+The fix is to make the matching tolerant via the existing [`czech_utils.normalize()`](scripts/czech_utils.py#L22-L25) helper (NFKD + lowercase), with a small whitespace-collapse on top, and apply the same canonicalization in `group_payments_by_person()` so the modal's raw-payments lookup uses the canonical attendance-sheet name as the key.
+
+## Approach
+
+### 1. `scripts/match_payments.py` — tolerant `Person` → `ledger` resolution in `reconcile()`
+
+- Add a small private helper at module scope:
+
+  ```python
+  def _canonical_key(name: str) -> str:
+      return re.sub(r"\s+", " ", normalize(name)).strip()
+  ```
+
+  Uses the existing `normalize()` from `czech_utils` ([:22-25](scripts/czech_utils.py#L22-L25)) and additionally collapses whitespace runs to a single space so `"Mária  Maco"` and `"Mária Maco"` both reduce to `"maria maco"`.
+
+- Inside [`reconcile()`](scripts/match_payments.py#L295), right after `member_names` is computed ([:308](scripts/match_payments.py#L308)), build a lookup dict once:
+
+  ```python
+  canonical_by_key: dict[str, str] = {}
+  for name in member_names:
+      key = _canonical_key(name)
+      canonical_by_key.setdefault(key, name)  # first wins; ambiguity handled below
+  ```
+
+- Replace the byte-exact check at [:404](scripts/match_payments.py#L404). Resolve each `member_name` from `matched_members` to the canonical attendance-sheet name before any ledger / credits access:
+
+  ```python
+  for raw_member_name, confidence in matched_members:
+      member_name = canonical_by_key.get(_canonical_key(raw_member_name))
+      if member_name is None:
+          logger.warning(
+              "Payment matched to unknown member %r (tx: %s, %s) — adding to unmatched",
+              raw_member_name, tx.get("date", "?"), tx.get("message", "?"),
+          )
+          unmatched.append(tx)
+          continue
+      if member_name != raw_member_name:
+          logger.info(
+              "Person cell %r resolved to canonical member %r — consider fixing the sheet",
+              raw_member_name, member_name,
+          )
+      # ... rest of the loop body unchanged: ledger[member_name], credits[member_name], …
+  ```
+
+  The `logger.info` line lets the user see (in `make web-debug` logs) which sheet rows have a non-canonical `Person` value, so they can clean them up at their own pace — without breaking allocation in the meantime.
+
+- Leave the rest of the function untouched. Once `member_name` is the canonical name, every downstream key (`ledger[member_name]`, `credits[member_name]`, `other_ledger[member_name]`, the `tx["person"]` echo into `transactions`) is already correct.
+
+### 2. `app.py` — canonicalize the raw-payments grouping key
+
+- The current [`group_payments_by_person()`](app.py#L60-L73) cannot canonicalize on its own because it does not know the attendance-sheet member list. Extend its signature to accept the member list and reuse `_canonical_key`:
+
+  ```python
+  from match_payments import _canonical_key  # or re-export via a tiny public name
+
+  def group_payments_by_person(transactions, member_names=None):
+      canonical_by_key = (
+          {_canonical_key(n): n for n in member_names} if member_names else {}
+      )
+      grouped = {}
+      for tx in transactions:
+          person = str(tx.get("person", "")).strip()
+          if not person:
+              continue
+          for p in person.split(","):
+              p = re.sub(r"\[\?\]\s*", "", p).strip()
+              if not p:
+                  continue
+              key = canonical_by_key.get(_canonical_key(p), p)  # fallback: keep raw
+              grouped.setdefault(key, []).append(tx)
+      for rows in grouped.values():
+          rows.sort(key=lambda t: str(t.get("date", "")), reverse=True)
+      return grouped
+  ```
+
+- Update the three call sites to pass `member_names`:
+  - `adults_view()` around [`app.py:333`](app.py#L333) — `members` is already in scope; pass `[name for name, _, _ in members]`.
+  - `juniors_view()` around [`app.py:539`](app.py#L539) — same.
+  - `payments()` around [`app.py:549`](app.py#L549) — same; needs the adult+junior member names so the `/payments` per-person grouping is consistent.
+
+- Naming: `_canonical_key` starts with an underscore inside `match_payments.py`. To avoid leaking a private symbol, expose it as `canonical_member_key` (no underscore) in `match_payments.py` and import that name from `app.py`.
+
+### 3. Why not also touch `infer_payments.py`
+
+`infer_payments.py` already writes canonical attendance-sheet names into the `Person` column (it picks from `member_names`). The bug only manifests when the cell was filled in **manually** by a human (typed without diacritics, different case) or was written by an older inference that has since drifted from a renamed attendance row. Making `reconcile()` tolerant fixes the symptom for both cases without changing inference. The `logger.info` line is sufficient signal for the user to clean up the sheet on their own schedule.
+
+### 4. Tests
+
+**4a. Delete obsolete route tests in [tests/test_app.py](tests/test_app.py).** Four tests target Flask routes that no longer exist (the old fee/reconcile pages were merged into `/adults` and `/juniors`); they currently fail with 404. Their coverage is already provided by `test_adults_route`, `test_juniors_route`, and `test_payments_route`. Delete:
+
+- `test_fees_route` ([tests/test_app.py:22-35](tests/test_app.py#L22-L35)) — hits `/fees`
+- `test_fees_juniors_route` ([tests/test_app.py:37-55](tests/test_app.py#L37-L55)) — hits `/fees-juniors`
+- `test_reconcile_route` ([tests/test_app.py:57-81](tests/test_app.py#L57-L81)) — hits `/reconcile`; also asserts a literal `OK` string the merged dashboard no longer renders
+- `test_reconcile_juniors_route` ([tests/test_app.py:101-131](tests/test_app.py#L101-L131)) — hits `/reconcile-juniors`; same `OK` assertion mismatch
+
+The two tests that reference junior-only formatting (`? / 1 (J)` and `500 CZK / 4 (1A+3J)`) are testing a retired template, not the live `/juniors` page — no need to migrate those assertions; the live `/juniors` format is already covered by `test_juniors_route`.
+
+**4b. Add `tests/test_match_payments.py`** (new file) covering the resolution helper and `reconcile()` end-to-end for the canonicalization fix:
+
+- `_canonical_key("Mária  Maco") == _canonical_key("maria maco")`
+- `reconcile()` with member `"Mária Maco"` and a tx `{person: "Maria Maco", purpose: "2026-04", amount: 750, ...}` produces:
+  - `result['members']['Mária Maco']['months']['2026-04']['paid'] == 750`
+  - the tx appears in `result['members']['Mária Maco']['months']['2026-04']['transactions']`
+  - `result['unmatched']` is empty
+- `reconcile()` with `Person = "Někdo Neznámý"` (no match in members) still routes to `unmatched`.
+
+## Critical files
+
+- [scripts/match_payments.py](scripts/match_payments.py) — add `canonical_member_key()` helper; build `canonical_by_key` once in `reconcile()`; resolve `raw_member_name` → `member_name` before ledger access at [:404](scripts/match_payments.py#L404).
+- [app.py](app.py) — extend `group_payments_by_person()` to accept `member_names` and key the grouped dict by canonical attendance-sheet name; update three call sites.
+- [tests/test_app.py](tests/test_app.py) — delete the four obsolete route tests listed in §4a.
+- [tests/test_match_payments.py](tests/test_match_payments.py) — add the cases above (create the file if missing).
+- [docs/plans/](docs/plans/) — per project [CLAUDE.md](CLAUDE.md), move this plan file to `docs/plans/2026-05-05-1640-payment-person-name-canonicalization.md` once execution starts (the plan-mode harness writes to `~/.claude/plans/` by default).
+
+## Verification
+
+1. **Reproduce first.** Before touching code, open `/adults`, click `[i]` next to "Mária Maco", and confirm both: 2026-04 is unpaid and the payment is missing from history. Inspect the actual `Person` cell value in the payments sheet for the 2026-04 row — confirm it differs from `"Mária Maco"` (likely missing the `á`). Record the exact string for the test case.
+2. `make test` — new tests pass; existing tests still green.
+3. `make web-debug` and reload `/adults`. The 2026-04 cell for "Mária Maco" turns green (`cell-ok`); the modal's payment history shows the row; the "Raw Payments" section also shows the row. Server log emits `Person cell 'Maria Maco' resolved to canonical member 'Mária Maco' — consider fixing the sheet`.
+4. Cross-check `/payments` — the row appears under the `Mária Maco` group (canonical key), not under a separate `Maria Maco` group.
+5. Spot-check one member with the conventionally-correct `Person` value (e.g. one of the recent payers visible on the dashboard) — paid cells and history are unchanged, no spurious resolution log line.
+6. Confirm a payment with a genuinely unknown `Person` (typo of a non-member) still ends up in the dashboard's `Unmatched` block and emits the existing `Payment matched to unknown member …` warning.
+7. Append a `CHANGELOG.md` entry per [CLAUDE.md](CLAUDE.md) once the user confirms the fix works.

docs/plans/2026-05-05-2144-branch-per-feature-workflow.md

@@ -0,0 +1,83 @@
+# Branch-per-feature + Gitea MR workflow
+
+## Context
+
+Until now, Claude has been committing feature work directly to `main`
+(see recent history: `feat: Lower adult monthly fee…`, `feat: Go rewrite M1…`,
+all on `main`). The user wants to switch to a branch-per-feature flow with
+review via a Gitea merge request, so that:
+
+- Feature work is reviewable as a self-contained diff before it lands.
+- `main` stays releasable.
+- The change history shows reviewed merges, not unsupervised pushes.
+
+The remote is Gitea (`https://gitea.home.hrajfrisbee.cz/kacerr/fuj-management.git`),
+which supports the standard pull/merge-request flow.
+
+This plan only modifies `CLAUDE.md`. No code changes.
+
+## Scope clarification (from user)
+
+- **MR creation method:** Claude pushes the branch and prints the Gitea
+  "compare" URL. The user opens / merges the MR in the browser. No `tea` CLI,
+  no API calls.
+- **When the flow applies:** Features only. Small bug fixes and hotfixes can
+  still be committed straight to `main`. Claude decides feature-vs-fix based
+  on scope; when uncertain, ask.
+- **Branch naming:** `feat/<slug>` for features, `fix/<slug>` for the
+  occasional bug-fix branch the user explicitly requests. `<slug>` is
+  kebab-case, short, descriptive.
+
+## Change
+
+Add a new top-level section to `CLAUDE.md` titled **"Branching & merge requests"**,
+placed immediately before the existing `## Git Commits` section so the workflow
+context appears before the commit-message convention.
+
+### Proposed section content
+
+```markdown
+## Branching & merge requests
+
+The remote is Gitea (`gitea.home.hrajfrisbee.cz/kacerr/fuj-management`).
+For **features**, do not commit to `main` directly. Use a branch + merge
+request flow:
+
+1. **Create a branch off `main`** before starting work:
+   - `feat/<slug>` for features (e.g. `feat/qr-code-overlay`)
+   - `fix/<slug>` for bug-fix branches the user explicitly asks for
+   - `<slug>` is short kebab-case
+2. **Commit on the branch** following the existing commit conventions
+   (Co-Authored-By trailer, etc.).
+3. **Push the branch** to `origin` with `-u` so it tracks.
+4. **Print the Gitea compare URL** so the user can open the MR in the
+   browser:
+   `https://gitea.home.hrajfrisbee.cz/kacerr/fuj-management/compare/main...<branch>`
+   Do **not** use `tea`, `gh`, or call the Gitea API — the user opens and
+   merges the MR themselves.
+5. **Do not merge or delete the branch** from the CLI. The user does that
+   in Gitea.
+
+**Exceptions — when committing straight to `main` is fine:**
+- Small bug fixes / hotfixes the user describes as such.
+- Typo / comment / formatting tweaks.
+- Edits the user explicitly says to push to `main`.
+
+When uncertain whether something is "feature" or "small fix", ask before
+committing.
+```
+
+## Files to modify
+
+- [CLAUDE.md](CLAUDE.md) — insert the new `## Branching & merge requests`
+  section just above the existing `## Git Commits` section (around line 95).
+
+## Verification
+
+- Re-read `CLAUDE.md` and confirm the new section is well-placed and the
+  existing structure (`## Git Commits`, `## Changelog`, `## Plans`) is intact.
+- `git diff CLAUDE.md` should show only an additive change.
+- No code, tests, or runtime behavior changes — nothing else to test.
+- Behavior verification happens on the **next** feature request: Claude
+  should create a `feat/<slug>` branch, commit there, push, and print the
+  compare URL instead of committing on `main`.

docs/plans/2026-05-05-2204-go-rewrite-m2-1-czech-normalize.md

@@ -0,0 +1,154 @@
+# Plan: Go rewrite — M2.1 `domain/czech.Normalize`
+
+## Context
+
+The Go rewrite finished M1 (skeleton, tooling, hello server) in commit
+`cf0f176` on 2026-05-04. The next milestone, **M2 — Pure-domain helpers**,
+is current per [progress tracker](2026-05-03-2349-go-backend-rewrite-progress.md)
+but has no work landed yet (all 12 sub-tasks unchecked).
+
+This plan covers only the **first** M2 task: porting Python's
+`normalize` from [scripts/czech_utils.py](../../scripts/czech_utils.py)
+to Go as `internal/domain/czech.Normalize`. It is the lowest-level helper
+in the domain — `parse_month_references`, `_build_name_variants`,
+`match_members`, exception keys, and `reconcile` all transitively depend
+on it. Getting it byte-equivalent first removes a class of "why does my
+match not fire" failures from every later M2 task.
+
+**Decision (confirmed in plan-mode Q):** start with hand-written Go unit
+tests for fresh Czech edge cases. Defer parity-fixture wiring until
+M3.1/M3.2 land (separate task); add the parity test for `Normalize`
+retroactively at that point.
+
+## Scope
+
+- New package `go/internal/domain/czech/` with `Normalize` and unit tests.
+- Add `golang.org/x/text` dependency to `go/go.mod` (currently zero deps).
+- **Out of scope:** `ParseMonthReferences` (M2.2), fixture tooling
+  (M3.1/M3.2), CLI subcommand wiring (M2.11/M2.12), parity test runner.
+
+## Recommended approach
+
+### Python contract to match
+
+```python
+def normalize(text: str) -> str:
+    nfkd = unicodedata.normalize("NFKD", text)
+    return "".join(c for c in nfkd if not unicodedata.combining(c)).lower()
+```
+
+Three semantic operations:
+1. NFKD decompose
+2. Drop characters where `unicodedata.combining(c)` is non-zero
+3. Lowercase
+
+### Go implementation
+
+`go/internal/domain/czech/normalize.go`:
+
+```go
+package czech
+
+import (
+    "strings"
+    "unicode"
+    "golang.org/x/text/unicode/norm"
+)
+
+func Normalize(s string) string {
+    decomposed := norm.NFKD.String(s)
+    var b strings.Builder
+    b.Grow(len(decomposed))
+    for _, r := range decomposed {
+        if unicode.In(r, unicode.Mn) {
+            continue
+        }
+        b.WriteRune(r)
+    }
+    return strings.ToLower(b.String())
+}
+```
+
+**Two precision points worth flagging:**
+
+1. **`unicode.Mn` not `unicode.IsMark`.** The plan's library-choices
+   table mentions `unicode.IsMark`, but that covers Mn + Mc + Me. Python
+   `unicodedata.combining()` returns 0 for Mc/Me (their canonical
+   combining class is 0), so it effectively filters only Mn. Use
+   `unicode.In(r, unicode.Mn)` for byte-equivalence with Python. Cite
+   this in a one-line code comment; it's the kind of thing a future
+   reader will second-guess.
+2. **`strings.ToLower` vs Go's locale-aware tools.** Python's `.lower()`
+   on already-decomposed Latin is straight ASCII lowercase for Czech.
+   Stdlib `strings.ToLower` matches; do not pull in `golang.org/x/text/cases`.
+
+### Tests
+
+`go/internal/domain/czech/normalize_test.go` — table-driven, covers:
+
+- ASCII passthrough: `"Honza" → "honza"`
+- Czech lowercase diacritics: `"žluťoučký" → "zlutoucky"`
+- Mixed case + diacritics: `"Příliš" → "prilis"`
+- Czech caron + ring: `"Dvořák" → "dvorak"`, `"Růžena" → "ruzena"`
+- Hard letters: `"Čeněk" → "cenek"`, `"Kačer" → "kacer"`
+- Empty string: `"" → ""`
+- Already-normalized: `"prilis" → "prilis"` (idempotence)
+- Pre-composed vs decomposed input both produce the same output (NFC
+  `"é"` and `"é"` both → `"e"`)
+- Whitespace preserved: `"Jan Novák" → "jan novak"`
+
+Run a one-shot cross-check against the live Python implementation for
+each test input before locking the table:
+```
+PYTHONPATH=scripts:. python -c \
+  'from czech_utils import normalize; print(repr(normalize("Dvořák")))'
+```
+This is the manual stand-in for the M3 parity fixtures.
+
+### Wire-up
+
+- `go get golang.org/x/text@latest` (run from `go/`); `go mod tidy`.
+- No CLI changes — `cmd/fuj` already stubs `fees`/`reconcile` with
+  exit code 2; no need to touch dispatcher for this task. `Normalize`
+  is consumed by other domain code, not by users directly.
+
+## Critical files
+
+- New: [go/internal/domain/czech/normalize.go](../../go/internal/domain/czech/normalize.go)
+- New: [go/internal/domain/czech/normalize_test.go](../../go/internal/domain/czech/normalize_test.go)
+- Modified: [go/go.mod](../../go/go.mod), `go/go.sum` (new)
+- Reference (read-only): [scripts/czech_utils.py](../../scripts/czech_utils.py) — the porting source
+- Reference (read-only): [docs/plans/2026-05-03-2349-go-backend-rewrite.md](2026-05-03-2349-go-backend-rewrite.md) — risk #3 (NFKD edge cases)
+
+## Verification
+
+End-to-end checks before marking M2.1 done:
+
+1. `cd go && go build ./...` — clean compile.
+2. `cd go && go test ./internal/domain/czech/...` — all table cases green.
+3. `cd go && go test -race ./...` — race-clean.
+4. `cd go && golangci-lint run` (or `make go-lint` from repo root) — clean.
+5. **Spot parity** (manual, will be automated in M3): for each Go test
+   input, run the Python `normalize` via `PYTHONPATH=scripts:. python -c
+   '...'` and confirm bytes match. Capture the diff in the commit
+   message if anything surprises.
+6. `make go-build && make go-test && make go-lint` from repo root — proves
+   the existing M1 gate still passes.
+
+## Branching & follow-up
+
+Per [CLAUDE.md](../../CLAUDE.md), this is feature work → branch + Gitea MR:
+
+- Branch: `feat/m2-1-czech-normalize` off `main`.
+- Single commit, Co-Authored-By trailer.
+- Push with `-u`, print compare URL
+  `https://gitea.home.hrajfrisbee.cz/kacerr/fuj-management/compare/main...feat/m2-1-czech-normalize`
+- User opens/merges the MR.
+- After merge: tick `M2.1` in the progress tracker with the commit SHA;
+  add a one-line CHANGELOG entry; record any porting surprise in the
+  tracker's "Notes & decisions" section (e.g. the `Mn`-vs-`IsMark`
+  precision point if it bears noting).
+
+Next task after this lands is **M2.2 `ParseMonthReferences`** — the
+larger, edge-case-heavier sibling. Whether to start it before or after
+M3.1/M3.2 is a separate decision the user can make then.

docs/plans/2026-05-05-2337-go-rewrite-m2-2-parse-month-references.md

@@ -0,0 +1,205 @@
+# Plan: Go rewrite — M2.2 `domain/czech.ParseMonthReferences`
+
+## Context
+
+M2.1 (`domain/czech.Normalize`) merged via PR #4 (`d9a61b3`) on
+2026-05-05. Per the [progress tracker](2026-05-03-2349-go-backend-rewrite-progress.md),
+**M2.2** is next: port `parse_month_references` from
+[scripts/czech_utils.py](../../scripts/czech_utils.py) to Go as
+`internal/domain/czech.ParseMonthReferences`.
+
+This function is the second-most-load-bearing pure helper after
+`reconcile`: every payment-message → month inference goes through it.
+Risk #4 in the [parent plan](2026-05-03-2349-go-backend-rewrite.md)
+specifically calls out its semantics — wrap-around year inference and
+the `m >= 10 → previous year` standalone heuristic — as easy to mis-port.
+
+This plan locks the test table against the live Python implementation
+*before* coding, so the Go port has a verified parity baseline even
+before the M3.1/M3.2 fixture infrastructure exists.
+
+## Scope
+
+- New file `go/internal/domain/czech/parse_month_references.go` in the
+  existing `czech` package (alongside [normalize.go](../../go/internal/domain/czech/normalize.go)).
+- New file `go/internal/domain/czech/parse_month_references_test.go`
+  with the test table below.
+- **Out of scope:** parity-fixture wiring (M3.1/M3.2); CLI hook-up
+  (M2.11/M2.12); any consumer call-sites.
+- **No new dependencies** — stdlib `regexp`, `sort`, `strconv`, `strings`
+  plus the existing `czech.Normalize` cover everything.
+
+## Recommended approach
+
+### Python contract to mirror
+
+Three regex passes, all run on `normalize(text)`:
+
+1. `([\d+]+)\s*/\s*(\d{2,4})` — captures `"11+12/2025"`, `"01/26"`, `"1/26"`.
+   Split the months part on `+`, keep digit-only tokens, validate `1..12`.
+   Year < 100 → year + 2000.
+2. `(\d{1,2})\s*\.\s*(\d{4})` — captures `"12.2025"`. **4-digit year only**
+   (so `"1.26"` does not match).
+3. Czech month names. First the **range** sub-pass:
+   `(name)\s*-\s*(name)` finds pairs; walk start→end with `m % 12 + 1`,
+   stopping when `m == end_m`. Wrap rule: if `start_m > end_m`, months
+   `>= start_m` are `defaultYear - 1`, the rest are `defaultYear`. Both
+   matched names go into a `foundInRanges` set.
+   Then the **standalone** sub-pass: `\b(name)\b`, skipping any name in
+   `foundInRanges`. For each remaining match, `m >= 10 → defaultYear - 1`,
+   else `defaultYear`.
+
+Output: sorted, deduplicated `[]string` of `"YYYY-MM"`.
+
+### Go signature
+
+```go
+package czech
+
+// ParseMonthReferences extracts YYYY-MM month references from Czech
+// free text. defaultYear seeds two heuristics: standalone month names
+// with m >= 10 are treated as defaultYear-1 (out-of-year backfill), and
+// wrap-around ranges (e.g. listopad-leden) place months >= start in
+// defaultYear-1.
+func ParseMonthReferences(text string, defaultYear int) []string
+```
+
+Required `defaultYear` (no default value — Go convention).
+
+### Implementation sketch
+
+```go
+var czechMonths = map[string]int{
+    "leden": 1, "ledna": 1, "lednu": 1,
+    "unor": 2, "unora": 2, "unoru": 2,
+    "brezen": 3, "brezna": 3, "breznu": 3,
+    "duben": 4, "dubna": 4, "dubnu": 4,
+    "kveten": 5, "kvetna": 5, "kvetnu": 5,
+    "cerven": 6, "cervna": 6, "cervnu": 6,
+    "cervenec": 7, "cervnce": 7, "cervenci": 7,
+    "srpen": 8, "srpna": 8, "srpnu": 8,
+    "zari": 9,
+    "rijen": 10, "rijna": 10, "rijnu": 10,
+    "listopad": 11, "listopadu": 11,
+    "prosinec": 12, "prosince": 12, "prosinci": 12,
+}
+
+// Sorted by descending length at init, so longer alternatives win in
+// the regex (e.g. "cervenec" beats "cerven"). Mirrors Python's
+// sorted(..., key=len, reverse=True).
+var monthNameAlt = buildMonthNameAlt()
+
+var (
+    numericRe = regexp.MustCompile(`([\d+]+)\s*/\s*(\d{2,4})`)
+    dotRe     = regexp.MustCompile(`(\d{1,2})\s*\.\s*(\d{4})`)
+    rangeRe   = regexp.MustCompile(`(` + monthNameAlt + `)\s*-\s*(` + monthNameAlt + `)`)
+    standRe   = regexp.MustCompile(`\b(` + monthNameAlt + `)\b`)
+)
+```
+
+Three Go-specific gotchas worth a code comment:
+
+1. **RE2 alternation is leftmost-first**, same as Python `re`. Sorting
+   month names by descending length is therefore necessary (otherwise
+   `"cervenec"` matches as `"cerven"` + leftover `"ec"`). Mirror the
+   Python sort exactly.
+2. **Map iteration is randomized in Go.** Build the alternation list
+   from a sorted slice of keys, not by iterating the map.
+3. **`\d` and `\b`** in Go RE2 are ASCII-only, which matches the
+   effective behavior on `Normalize`'d input (NFKD already collapsed
+   any Unicode digits/letters that would matter; standalone Devanagari
+   digits in member messages aren't a real-world concern).
+
+The walk loop uses a bounded counter (max 12 iterations) defensively in
+Go; Python's `while True` is fine because every range terminates within
+12 hops, but a future reader appreciates the bound.
+
+### Test table (verified against live Python — `default_year=2026`)
+
+Locked outputs from `PYTHONPATH=scripts:. python -c 'from czech_utils
+import parse_month_references; print(parse_month_references(<input>, 2026))'`
+on 2026-05-05.
+
+| # | Input | Expected | Path exercised |
+|---|---|---|---|
+| 1 | `""` | `[]` | empty |
+| 2 | `"11+12/2025"` | `["2025-11", "2025-12"]` | numeric, plus-split |
+| 3 | `"1/2026"` | `["2026-01"]` | numeric, single |
+| 4 | `"01/26"` | `["2026-01"]` | 2-digit year normalization |
+| 5 | `"11+12/25"` | `["2025-11", "2025-12"]` | plus-split + 2-digit year |
+| 6 | `"12+1+2/2026"` | `["2026-01", "2026-02", "2026-12"]` | sorting |
+| 7 | `"12.2025"` | `["2025-12"]` | dot pattern |
+| 8 | `"1.26"` | `[]` | dot pattern requires 4-digit year |
+| 9 | `"leden"` | `["2026-01"]` | standalone, m<10 |
+| 10 | `"prosinec"` | `["2025-12"]` | standalone, m≥10 → previous year |
+| 11 | `"prosince"` | `["2025-12"]` | declension |
+| 12 | `"lednu"` | `["2026-01"]` | declension |
+| 13 | `"rijen"` | `["2025-10"]` | m≥10 boundary (10 itself) |
+| 14 | `"zari"` | `["2026-09"]` | m<10 just below boundary |
+| 15 | `"listopad-leden"` | `["2025-11", "2025-12", "2026-01"]` | wrap range Nov→Jan |
+| 16 | `"rijen-leden"` | `["2025-10", "2025-11", "2025-12", "2026-01"]` | wrap from October |
+| 17 | `"unor-kveten"` | `["2026-02", "2026-03", "2026-04", "2026-05"]` | non-wrap range |
+| 18 | `"leden-leden"` | `["2026-01"]` | degenerate range |
+| 19 | `"unor-listopad"` | `["2026-02", ..., "2026-11"]` (10 entries) | range spans m≥10 — heuristic does NOT fire (range exclusion) |
+| 20 | `"cervenec-srpen"` | `["2026-07", "2026-08"]` | longest-match alt (`cervenec` not `cerven`+`ec`) |
+| 21 | `"listopad-leden, prosinec"` | `["2025-11", "2025-12", "2026-01"]` | range + standalone, dedup |
+| 22 | `"prosinec leden"` | `["2025-12", "2026-01"]` | two standalones, no range |
+| 23 | `"11+12/2025, leden-brezen"` | `["2025-11", "2025-12", "2026-01", "2026-02", "2026-03"]` | numeric + range mix |
+| 24 | `"11+12/25 a listopad"` | `["2025-11", "2025-12"]` | dedup across passes |
+| 25 | `"prosince/2025"` | `["2025-12"]` | numeric pattern fails (no digits before `/`); standalone fires |
+| 26 | `"listopad-prosinec/2025"` | `["2026-11", "2026-12"]` | range wins; numeric pattern fails |
+| 27 | `"01.2026 / 02.2026"` | `["2026-01", "2026-02"]` | dot pattern only; numeric matches `(2026, 02)` but month 2026 is out of range |
+| 28 | `"/12/2025"` | `["2025-12"]` | numeric matches at second `/` |
+| 29 | `"PROSINEC"` | `["2025-12"]` | normalize lowercases |
+| 30 | `"Žluťoučký prosinec"` | `["2025-12"]` | normalize strips diacritics |
+| 31 | `"Únor - květen"` | `["2026-02", ..., "2026-05"]` | range tolerates spaces around `-`, diacritics survive normalize |
+| 32 | `"platba 11/2025 a leden"` | `["2025-11", "2026-01"]` | mixed natural-language |
+| 33 | `"December"` | `[]` | English month names not recognized |
+| 34 | `"11+12/2025 11+12/2025"` | `["2025-11", "2025-12"]` | dedup of repeated input |
+| 35 | `"leden 2026"` | `["2026-01"]` | trailing year is ignored unless dot/slash separator present |
+
+35 cases is enough to lock semantics; the M3.x corpus will pile on
+real-message fixtures later.
+
+### Wire-up
+
+- No `go.mod` changes (stdlib only).
+- No CLI changes.
+- `Normalize` is in the same package, so call it directly.
+
+## Critical files
+
+- New: [go/internal/domain/czech/parse_month_references.go](../../go/internal/domain/czech/parse_month_references.go)
+- New: [go/internal/domain/czech/parse_month_references_test.go](../../go/internal/domain/czech/parse_month_references_test.go)
+- Reference (read-only): [scripts/czech_utils.py](../../scripts/czech_utils.py) — the porting source
+- Reference (read-only): [docs/plans/2026-05-03-2349-go-backend-rewrite.md](2026-05-03-2349-go-backend-rewrite.md) — risk #4
+- Reuses: [go/internal/domain/czech/normalize.go](../../go/internal/domain/czech/normalize.go) — `Normalize` is called once at the top of `ParseMonthReferences`
+
+## Verification
+
+End-to-end checks before marking M2.2 done:
+
+1. `cd go && go build ./...` — clean compile.
+2. `cd go && go test ./internal/domain/czech/...` — all 35 table cases green.
+3. `cd go && go test -race ./...` — race-clean (regex compiles are global; verify no init races).
+4. `cd go && golangci-lint run` (or `make go-lint` from repo root) — clean, gofumpt-formatted.
+5. **Spot parity** (manual, will be automated in M3.x): each test input has its expected output captured from the live Python implementation on 2026-05-05; the test table itself is the parity record. If any case diverges during implementation, re-run Python with the exact input to confirm the truth and update either the Go code or the test entry.
+6. `make go-build && make go-test && make go-lint` from repo root — proves M1/M2.1 gate still passes.
+
+## Branching & follow-up
+
+Per [CLAUDE.md](../../CLAUDE.md), this is feature work → branch + Gitea MR via `tea`:
+
+- Branch: `feat/m2-2-parse-month-references` off `main`.
+- Single focused commit, Co-Authored-By trailer.
+- Push with `-u`.
+- Open MR with `tea pr create --title "feat(go/M2.2): port czech.ParseMonthReferences" --description ... --base main --head feat/m2-2-parse-month-references`. Print the MR URL for the user.
+- User merges/deletes the branch in Gitea — never from the CLI.
+
+After merge (small doc edits land straight on `main` per CLAUDE.md exception):
+
+- Tick `M2.2` in the [progress tracker](2026-05-03-2349-go-backend-rewrite-progress.md) with the merge SHA.
+- Add a one-line `CHANGELOG.md` entry (timestamp via `date "+%Y-%m-%d %H:%M %Z"`).
+- Record any porting surprise (e.g. an unexpected diff between Go RE2 and Python `re`) in the tracker's "Notes & decisions" section.
+
+Next task is **M2.3 `domain/fees.CalculateFee`** — straightforward constants table; no parser semantics to debate.

docs/plans/2026-05-06-0928-go-m2-5-money-parse-czk.md

@@ -0,0 +1,199 @@
+# M2.5 — Port `parse_czk_amount` to `domain/money.ParseCZK`
+
+> On execution, this plan should be moved to
+> `docs/plans/2026-05-06-0928-go-m2-5-money-parse-czk.md` per project CLAUDE.md
+> (`docs/plans/YYYY-MM-DD-HHMM-<slug>.md`). Plan mode forces it to live under
+> `~/.claude/plans/` until then.
+
+## Context
+
+Continuing the Go backend rewrite tracked in
+[2026-05-03-2349-go-backend-rewrite-progress.md](../../srv/personal/fuj-management/docs/plans/2026-05-03-2349-go-backend-rewrite-progress.md).
+M2.1–M2.4 are landed. Next leaf-level pure function is
+`parse_czk_amount` from [scripts/infer_payments.py:17-45](../../srv/personal/fuj-management/scripts/infer_payments.py#L17-L45),
+the Czech-locale amount parser used at [scripts/infer_payments.py:124](../../srv/personal/fuj-management/scripts/infer_payments.py#L124)
+when reading the `Inferred Amount` column out of the payments sheet.
+
+It's a small, isolated string→float helper, but its heuristic for
+disambiguating `.` and `,` as decimal vs thousand separator is
+non-obvious and needs to behave identically in Go to keep parity once
+the Go infer pipeline lands in M4.8.
+
+## Python behaviour (the spec)
+
+```py
+def parse_czk_amount(val) -> float:
+    if val is None or val == "":
+        return 0.0
+    if isinstance(val, (int, float)):
+        return float(val)
+
+    val = str(val)
+    val = val.replace("Kč", "").replace("CZK", "").strip()
+    if "," in val:
+        # 1.500,00 -> 1500.00 — comma is decimal sep
+        val = val.replace(".", "").replace(" ", "").replace(",", ".")
+    else:
+        if val.count(".") > 1:
+            # 1.500.000 -> 1500000 — multiple dots = thousand sep
+            val = val.replace(".", "").replace(" ", "")
+        else:
+            # "1 500.00" -> "1500.00", "1.500" stays "1.500" (= 1.5)
+            val = val.replace(" ", "")
+    try:
+        return float(val)
+    except ValueError:
+        return 0.0
+```
+
+Key behavioural notes for the Go port:
+
+1. Empty / None → 0, no error.
+2. `"1.500"` (single dot, no comma) is parsed as **1.5**, not 1500.
+   The heuristic intentionally treats a lone dot as decimal.
+3. `"1.500,00"` → 1500.0 (comma wins, dots are thousand seps).
+4. `"1.500.000"` → 1500000.0 (multiple dots → all thousand seps).
+5. `"1 500"` / `"1 500.00"` / `"500 Kč"` → spaces stripped.
+6. Garbage → 0, no error in Python.
+7. Strips literal substrings `"Kč"` and `"CZK"` (case-sensitive in Python).
+
+## Approach
+
+Create new package `internal/domain/money` mirroring the layout of
+`internal/domain/fees` (single-file module + test file alongside).
+
+### Signature
+
+```go
+// Package money ports Czech-locale currency parsing from
+// scripts/infer_payments.py.
+package money
+
+// ParseCZK parses a Czech-locale amount string and returns the value
+// in CZK as a float64.
+//
+// Mirrors scripts/infer_payments.py parse_czk_amount:
+//   - empty input → (0, nil)
+//   - "Kč"/"CZK" suffixes are stripped (case-sensitive, like Python)
+//   - if input contains ",", comma is the decimal separator and
+//     dots/spaces are thousand separators ("1.500,00" → 1500.0)
+//   - else if input contains 2+ dots, all dots are thousand seps
+//     ("1.500.000" → 1500000.0)
+//   - else single dot stays as the decimal point ("1.500" → 1.5,
+//     matching the Python heuristic)
+//   - on parse failure, returns (0, ErrInvalidAmount). Callers wanting
+//     Python-equivalent silent-zero behaviour can discard the error.
+func ParseCZK(s string) (float64, error)
+```
+
+`ErrInvalidAmount` is a package-level sentinel:
+
+```go
+var ErrInvalidAmount = errors.New("money: invalid CZK amount")
+```
+
+Why `(float64, error)` instead of mirroring Python's silent zero:
+
+- Go idiom prefers explicit errors.
+- The single Python call site doesn't distinguish parse-fail from
+  empty-input (both → 0), so if we want byte-equal behaviour at the
+  Go infer site (M4.8), the caller can `v, _ := money.ParseCZK(s)`
+  and get exactly the Python result.
+- Future callers (e.g. user-facing import flows) may want to surface
+  the error.
+
+This matches the precedent set in M2.4 where we used
+`Expected{Unknown bool}` rather than copying the Python `"?"` sentinel
+verbatim — Go-idiomatic surface, parity-preserving semantics.
+
+### Polymorphic input?
+
+Python's `parse_czk_amount` also accepts raw int/float (passed through
+unchanged) because Google Sheets API can return numeric cells as
+`float64` rather than strings. **Skip this in Go.** The Sheets IO
+adapter is M4.2, and that's where the `[]any` → string normalisation
+will live. Keeping `ParseCZK` string-only keeps the leaf function tiny.
+
+### Tests
+
+`money_test.go` mirrors the existing `fees_test.go` table-driven style,
+including the verification comment showing the Python command used to
+confirm each expected value:
+
+```sh
+PYTHONPATH=scripts:. python -c '
+from infer_payments import parse_czk_amount
+for v in [None, "", "0", "500", "500 Kč", "500 CZK",
+          "1 500", "1500.00", "1 500.00",
+          "1.500,00", "1500,5", "1.500.000",
+          "1.500", "abc", "  ", "100,5 Kč"]:
+    print(repr(v), "->", parse_czk_amount(v))
+'
+```
+
+Cases to cover (all numeric outputs verified against the Python output
+of the snippet above):
+
+| input | expected |
+|---|---|
+| `""` | 0 |
+| `"0"` | 0 |
+| `"500"` | 500 |
+| `"500 Kč"` | 500 |
+| `"500 CZK"` | 500 |
+| `"1 500"` | 1500 |
+| `"1500.00"` | 1500 |
+| `"1 500.00"` | 1500 |
+| `"1.500,00"` | 1500 |
+| `"1500,5"` | 1500.5 |
+| `"1.500.000"` | 1500000 |
+| `"1.500"` | 1.5 *(heuristic — single dot = decimal)* |
+| `"100,5 Kč"` | 100.5 |
+| `"abc"` | 0, returns `ErrInvalidAmount` |
+| `"  "` | 0, returns `ErrInvalidAmount` *(or 0 nil — confirm against Python; trim leaves `""`, then `float("")` raises → Python returns 0; Go test will assert whichever Python actually produces)* |
+
+The `"  "` row is the only one that needs the Python verification step
+to settle — once verified, lock the behaviour in.
+
+Also add a "documentation example" assertion in the test that
+`v, _ := ParseCZK(s)` recovers the Python silent-zero contract for
+every garbage input, so we don't lose that property at the Go infer
+call site.
+
+## Files to create
+
+- `go/internal/domain/money/money.go` — package + `ParseCZK` + `ErrInvalidAmount`
+- `go/internal/domain/money/money_test.go` — table-driven tests
+
+No existing Go files need editing.
+
+## Verification
+
+```sh
+cd go && go test ./internal/domain/money/...
+make go-lint
+make go-build   # sanity: nothing else broke
+```
+
+Also run the Python snippet from the Tests section above and diff its
+output against the test table to confirm parity.
+
+## Out of scope (explicit non-goals)
+
+- Polymorphic `any` input — leave for M4.2 IO adapter.
+- Hooking into the Tier-1 parity runner — that comes with M3.5
+  (`-tags=parity` build constraint). M2.5 just needs unit tests.
+- Any callsite migration — `infer_payments.py` keeps using its own
+  Python function until M4.8.
+
+## Progress tracker + changelog
+
+After the commit lands:
+
+- Tick `M2.5` in [docs/plans/2026-05-03-2349-go-backend-rewrite-progress.md](../../srv/personal/fuj-management/docs/plans/2026-05-03-2349-go-backend-rewrite-progress.md)
+  with the commit SHA, mirroring the M2.4 entry style.
+- Add a CHANGELOG.md entry at top:
+  `## YYYY-MM-DD HH:MM TZ — feat(go/M2.5): port domain/money.ParseCZK`.
+
+Branch: `feat/m2-5-money-parse-czk` (per CLAUDE.md branch-per-feature
+workflow). Push, open MR via `tea pr create`, leave merge to the user.

go/go.mod

@@ -1,3 +1,5 @@
 module fuj-management/go
 
 go 1.26.1
+
+require golang.org/x/text v0.36.0

go/go.sum

@@ -0,0 +1,2 @@
+golang.org/x/text v0.36.0 h1:JfKh3XmcRPqZPKevfXVpI1wXPTqbkE5f7JA92a55Yxg=
+golang.org/x/text v0.36.0/go.mod h1:NIdBknypM8iqVmPiuco0Dh6P5Jcdk8lJL0CUebqK164=

go/internal/domain/czech/normalize.go

@@ -0,0 +1,26 @@
+package czech
+
+import (
+	"strings"
+	"unicode"
+
+	"golang.org/x/text/unicode/norm"
+)
+
+// Normalize strips diacritics and lowercases s.
+//
+// Matches Python: unicodedata.normalize("NFKD", s) then filter out
+// combining characters (unicode.Mn only — not Mc/Me, which have
+// combining class 0 in Python's unicodedata.combining()).
+func Normalize(s string) string {
+	decomposed := norm.NFKD.String(s)
+	var b strings.Builder
+	b.Grow(len(decomposed))
+	for _, r := range decomposed {
+		if unicode.In(r, unicode.Mn) {
+			continue
+		}
+		b.WriteRune(r)
+	}
+	return strings.ToLower(b.String())
+}

go/internal/domain/czech/normalize_test.go

@@ -0,0 +1,31 @@
+package czech
+
+import "testing"
+
+func TestNormalize(t *testing.T) {
+	cases := []struct {
+		in   string
+		want string
+	}{
+		{"Honza", "honza"},
+		{"žluťoučký", "zlutoucky"},
+		{"Příliš", "prilis"},
+		{"Dvořák", "dvorak"},
+		{"Růžena", "ruzena"},
+		{"Čeněk", "cenek"},
+		{"Kačer", "kacer"},
+		{"", ""},
+		{"prilis", "prilis"},                     // idempotent
+		{"Jan Novák", "jan novak"},               // whitespace preserved
+		{"é", "e"},                               // precomposed é (NFC)
+		{"é", "e"},                              // decomposed e + combining acute
+		{"Ondřej Procházka", "ondrej prochazka"}, // realistic full name
+	}
+
+	for _, tc := range cases {
+		got := Normalize(tc.in)
+		if got != tc.want {
+			t.Errorf("Normalize(%q) = %q, want %q", tc.in, got, tc.want)
+		}
+	}
+}

go/internal/domain/czech/parse_month_references.go

@@ -0,0 +1,154 @@
+package czech
+
+import (
+	"fmt"
+	"regexp"
+	"sort"
+	"strconv"
+	"strings"
+)
+
+var czechMonths = map[string]int{
+	"leden": 1, "ledna": 1, "lednu": 1,
+	"unor": 2, "unora": 2, "unoru": 2,
+	"brezen": 3, "brezna": 3, "breznu": 3,
+	"duben": 4, "dubna": 4, "dubnu": 4,
+	"kveten": 5, "kvetna": 5, "kvetnu": 5,
+	"cerven": 6, "cervna": 6, "cervnu": 6,
+	"cervenec": 7, "cervnce": 7, "cervenci": 7,
+	"srpen": 8, "srpna": 8, "srpnu": 8,
+	"zari":  9,
+	"rijen": 10, "rijna": 10, "rijnu": 10,
+	"listopad": 11, "listopadu": 11,
+	"prosinec": 12, "prosince": 12, "prosinci": 12,
+}
+
+var (
+	numericRe *regexp.Regexp
+	dotRe     *regexp.Regexp
+	rangeRe   *regexp.Regexp
+	standRe   *regexp.Regexp
+)
+
+func init() {
+	// Sort by descending length so longer alternatives win in RE2 leftmost-first
+	// matching (e.g. "cervenec" is tried before "cerven").
+	names := make([]string, 0, len(czechMonths))
+	for name := range czechMonths {
+		names = append(names, name)
+	}
+	sort.Slice(names, func(i, j int) bool {
+		if len(names[i]) != len(names[j]) {
+			return len(names[i]) > len(names[j])
+		}
+		return names[i] < names[j]
+	})
+	alt := strings.Join(names, "|")
+
+	numericRe = regexp.MustCompile(`([\d+]+)\s*/\s*(\d{2,4})`)
+	dotRe = regexp.MustCompile(`(\d{1,2})\s*\.\s*(\d{4})`)
+	rangeRe = regexp.MustCompile(`(` + alt + `)\s*-\s*(` + alt + `)`)
+	standRe = regexp.MustCompile(`\b(` + alt + `)\b`)
+}
+
+// ParseMonthReferences extracts YYYY-MM month references from Czech free text.
+//
+// defaultYear seeds two heuristics: standalone month names with m >= 10 are
+// treated as defaultYear-1 (out-of-year backfill), and wrap-around ranges
+// (e.g. listopad-leden) place months >= start_m in defaultYear-1.
+//
+// Returns a sorted, deduplicated slice of "YYYY-MM" strings.
+func ParseMonthReferences(text string, defaultYear int) []string {
+	normalized := Normalize(text)
+	seen := map[string]struct{}{}
+
+	add := func(year, m int) {
+		if m >= 1 && m <= 12 {
+			seen[fmt.Sprintf("%04d-%02d", year, m)] = struct{}{}
+		}
+	}
+
+	// Pass 1: numeric months — "11+12/2025", "01/26", "1/2026"
+	for _, groups := range numericRe.FindAllStringSubmatch(normalized, -1) {
+		monthsPart, yearStr := groups[1], groups[2]
+		year, err := strconv.Atoi(yearStr)
+		if err != nil {
+			continue
+		}
+		if year < 100 {
+			year += 2000
+		}
+		for mStr := range strings.SplitSeq(monthsPart, "+") {
+			mStr = strings.TrimSpace(mStr)
+			if mStr == "" {
+				continue
+			}
+			allDigits := true
+			for _, c := range mStr {
+				if c < '0' || c > '9' {
+					allDigits = false
+					break
+				}
+			}
+			if !allDigits {
+				continue
+			}
+			m, err := strconv.Atoi(mStr)
+			if err != nil {
+				continue
+			}
+			add(year, m)
+		}
+	}
+
+	// Pass 2: dot-separated month.year — "12.2025" (4-digit year only)
+	for _, groups := range dotRe.FindAllStringSubmatch(normalized, -1) {
+		m, _ := strconv.Atoi(groups[1])
+		year, _ := strconv.Atoi(groups[2])
+		add(year, m)
+	}
+
+	// Pass 3a: Czech month name ranges — "listopad-leden"
+	foundInRanges := map[string]struct{}{}
+	for _, groups := range rangeRe.FindAllStringSubmatch(normalized, -1) {
+		startName, endName := groups[1], groups[2]
+		foundInRanges[startName] = struct{}{}
+		foundInRanges[endName] = struct{}{}
+		startM := czechMonths[startName]
+		endM := czechMonths[endName]
+		wraps := startM > endM
+		m := startM
+		for range 12 {
+			year := defaultYear
+			if wraps && m >= startM {
+				year = defaultYear - 1
+			}
+			add(year, m)
+			if m == endM {
+				break
+			}
+			m = m%12 + 1
+		}
+	}
+
+	// Pass 3b: standalone Czech month names (not part of a range)
+	for _, groups := range standRe.FindAllStringSubmatch(normalized, -1) {
+		name := groups[1]
+		if _, inRange := foundInRanges[name]; inRange {
+			continue
+		}
+		m := czechMonths[name]
+		year := defaultYear
+		if m >= 10 {
+			year = defaultYear - 1
+		}
+		add(year, m)
+	}
+
+	result := make([]string, 0, len(seen))
+	for k := range seen {
+		result = append(result, k)
+	}
+	sort.Strings(result)
+	return result
+}

go/internal/domain/czech/parse_month_references_test.go

@@ -0,0 +1,244 @@
+package czech
+
+import (
+	"reflect"
+	"testing"
+)
+
+func TestParseMonthReferences(t *testing.T) {
+	t.Parallel()
+
+	// All expected outputs verified against live Python implementation on 2026-05-05:
+	//   PYTHONPATH=scripts:. python -c 'from czech_utils import parse_month_references; print(parse_month_references("<input>", 2026))'
+	tests := []struct {
+		name        string
+		input       string
+		defaultYear int
+		want        []string
+	}{
+		{
+			name:        "empty",
+			input:       "",
+			defaultYear: 2026,
+			want:        []string{},
+		},
+		{
+			name:        "numeric plus-split two months full year",
+			input:       "11+12/2025",
+			defaultYear: 2026,
+			want:        []string{"2025-11", "2025-12"},
+		},
+		{
+			name:        "numeric single month full year",
+			input:       "1/2026",
+			defaultYear: 2026,
+			want:        []string{"2026-01"},
+		},
+		{
+			name:        "numeric 2-digit year",
+			input:       "01/26",
+			defaultYear: 2026,
+			want:        []string{"2026-01"},
+		},
+		{
+			name:        "numeric plus-split with 2-digit year",
+			input:       "11+12/25",
+			defaultYear: 2026,
+			want:        []string{"2025-11", "2025-12"},
+		},
+		{
+			name:        "numeric three months sorted",
+			input:       "12+1+2/2026",
+			defaultYear: 2026,
+			want:        []string{"2026-01", "2026-02", "2026-12"},
+		},
+		{
+			name:        "dot pattern",
+			input:       "12.2025",
+			defaultYear: 2026,
+			want:        []string{"2025-12"},
+		},
+		{
+			name:        "dot pattern requires 4-digit year",
+			input:       "1.26",
+			defaultYear: 2026,
+			want:        []string{},
+		},
+		{
+			name:        "standalone month below m10 threshold",
+			input:       "leden",
+			defaultYear: 2026,
+			want:        []string{"2026-01"},
+		},
+		{
+			name:        "standalone month m10 heuristic",
+			input:       "prosinec",
+			defaultYear: 2026,
+			want:        []string{"2025-12"},
+		},
+		{
+			name:        "declension prosince",
+			input:       "prosince",
+			defaultYear: 2026,
+			want:        []string{"2025-12"},
+		},
+		{
+			name:        "declension lednu",
+			input:       "lednu",
+			defaultYear: 2026,
+			want:        []string{"2026-01"},
+		},
+		{
+			name:        "standalone m10 boundary (rijen = October)",
+			input:       "rijen",
+			defaultYear: 2026,
+			want:        []string{"2025-10"},
+		},
+		{
+			name:        "standalone m9 just below boundary (zari = September)",
+			input:       "zari",
+			defaultYear: 2026,
+			want:        []string{"2026-09"},
+		},
+		{
+			name:        "range wrap Nov-Jan",
+			input:       "listopad-leden",
+			defaultYear: 2026,
+			want:        []string{"2025-11", "2025-12", "2026-01"},
+		},
+		{
+			name:        "range wrap starting at October",
+			input:       "rijen-leden",
+			defaultYear: 2026,
+			want:        []string{"2025-10", "2025-11", "2025-12", "2026-01"},
+		},
+		{
+			name:        "range no wrap",
+			input:       "unor-kveten",
+			defaultYear: 2026,
+			want:        []string{"2026-02", "2026-03", "2026-04", "2026-05"},
+		},
+		{
+			name:        "degenerate range same month",
+			input:       "leden-leden",
+			defaultYear: 2026,
+			want:        []string{"2026-01"},
+		},
+		{
+			name:        "range spanning m10 — heuristic does NOT fire for range members",
+			input:       "unor-listopad",
+			defaultYear: 2026,
+			want:        []string{"2026-02", "2026-03", "2026-04", "2026-05", "2026-06", "2026-07", "2026-08", "2026-09", "2026-10", "2026-11"},
+		},
+		{
+			name:        "longest-match alternation cervenec beats cerven",
+			input:       "cervenec-srpen",
+			defaultYear: 2026,
+			want:        []string{"2026-07", "2026-08"},
+		},
+		{
+			name:        "range plus standalone — range excludes, dedup",
+			input:       "listopad-leden, prosinec",
+			defaultYear: 2026,
+			want:        []string{"2025-11", "2025-12", "2026-01"},
+		},
+		{
+			name:        "two standalones no range",
+			input:       "prosinec leden",
+			defaultYear: 2026,
+			want:        []string{"2025-12", "2026-01"},
+		},
+		{
+			name:        "numeric plus range mix",
+			input:       "11+12/2025, leden-brezen",
+			defaultYear: 2026,
+			want:        []string{"2025-11", "2025-12", "2026-01", "2026-02", "2026-03"},
+		},
+		{
+			name:        "dedup across numeric and standalone passes",
+			input:       "11+12/25 a listopad",
+			defaultYear: 2026,
+			want:        []string{"2025-11", "2025-12"},
+		},
+		{
+			name:        "no digits before slash — standalone fires instead",
+			input:       "prosince/2025",
+			defaultYear: 2026,
+			want:        []string{"2025-12"},
+		},
+		{
+			name:        "range with trailing slash-year — numeric fails, range wins",
+			input:       "listopad-prosinec/2025",
+			defaultYear: 2026,
+			want:        []string{"2026-11", "2026-12"},
+		},
+		{
+			name:        "dot pattern only — numeric matches but month out of 1-12 range",
+			input:       "01.2026 / 02.2026",
+			defaultYear: 2026,
+			want:        []string{"2026-01", "2026-02"},
+		},
+		{
+			name:        "leading slash — numeric matches at second slash",
+			input:       "/12/2025",
+			defaultYear: 2026,
+			want:        []string{"2025-12"},
+		},
+		{
+			name:        "uppercase input normalized",
+			input:       "PROSINEC",
+			defaultYear: 2026,
+			want:        []string{"2025-12"},
+		},
+		{
+			name:        "diacritics stripped by Normalize",
+			input:       "Žluťoučký prosinec",
+			defaultYear: 2026,
+			want:        []string{"2025-12"},
+		},
+		{
+			name:        "diacritics in range with spaces around dash",
+			input:       "Únor - květen",
+			defaultYear: 2026,
+			want:        []string{"2026-02", "2026-03", "2026-04", "2026-05"},
+		},
+		{
+			name:        "natural language mixed with numeric and standalone",
+			input:       "platba 11/2025 a leden",
+			defaultYear: 2026,
+			want:        []string{"2025-11", "2026-01"},
+		},
+		{
+			name:        "English month name not recognized",
+			input:       "December",
+			defaultYear: 2026,
+			want:        []string{},
+		},
+		{
+			name:        "duplicate input deduped",
+			input:       "11+12/2025 11+12/2025",
+			defaultYear: 2026,
+			want:        []string{"2025-11", "2025-12"},
+		},
+		{
+			name:        "trailing year without separator ignored",
+			input:       "leden 2026",
+			defaultYear: 2026,
+			want:        []string{"2026-01"},
+		},
+	}
+
+	for _, tc := range tests {
+		t.Run(tc.name, func(t *testing.T) {
+			t.Parallel()
+			got := ParseMonthReferences(tc.input, tc.defaultYear)
+			if got == nil {
+				got = []string{}
+			}
+			if !reflect.DeepEqual(got, tc.want) {
+				t.Errorf("ParseMonthReferences(%q, %d)\n  got  %v\n  want %v",
+					tc.input, tc.defaultYear, got, tc.want)
+			}
+		})
+	}
+}

go/internal/domain/fees/fees.go

@@ -0,0 +1,34 @@
+// Package fees ports fee calculation from scripts/attendance.py.
+package fees
+
+const (
+	AdultFeeDefault = 700 // CZK fallback for 2+ practices when month not in AdultFeeMonthlyRate
+	AdultFeeSingle  = 200 // CZK for exactly 1 practice
+)
+
+// AdultFeeMonthlyRate mirrors ADULT_FEE_MONTHLY_RATE in scripts/attendance.py.
+// Months absent from this map fall back to AdultFeeDefault.
+var AdultFeeMonthlyRate = map[string]int{
+	"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,
+}
+
+// CalculateFee returns the adult fee in CZK for attendanceCount practices in
+// the given monthKey (format "YYYY-MM").
+//
+//	0 practices → 0
+//	1 practice  → AdultFeeSingle (200)
+//	2+          → AdultFeeMonthlyRate[monthKey] or AdultFeeDefault
+func CalculateFee(attendanceCount int, monthKey string) int {
+	if attendanceCount == 0 {
+		return 0
+	}
+	if attendanceCount == 1 {
+		return AdultFeeSingle
+	}
+	if rate, ok := AdultFeeMonthlyRate[monthKey]; ok {
+		return rate
+	}
+	return AdultFeeDefault
+}

go/internal/domain/fees/fees_test.go

@@ -0,0 +1,37 @@
+package fees
+
+import "testing"
+
+func TestCalculateFee(t *testing.T) {
+	t.Parallel()
+
+	// All expected outputs verified against live Python implementation on 2026-05-06:
+	//   PYTHONPATH=scripts:. python -c 'from attendance import calculate_fee; print([calculate_fee(c,m) for c,m in [(0,"2026-05"),(0,""),(1,"2026-05"),(1,"unknown"),(2,"2026-05"),(2,"2026-03"),(2,"2025-09"),(5,"2026-05"),(2,"2027-01"),(2,"")]])'
+	tests := []struct {
+		name  string
+		count int
+		month string
+		want  int
+	}{
+		{"zero short-circuits", 0, "2026-05", 0},
+		{"zero empty month", 0, "", 0},
+		{"single practice", 1, "2026-05", 200},
+		{"single ignores monthKey", 1, "unknown", 200},
+		{"two practices configured month", 2, "2026-05", 700},
+		{"two practices reduced march", 2, "2026-03", 350},
+		{"two practices early season", 2, "2025-09", 750},
+		{"high count same as two", 5, "2026-05", 700},
+		{"unknown future month falls back", 2, "2027-01", 700},
+		{"empty month falls back", 2, "", 700},
+	}
+
+	for _, tc := range tests {
+		t.Run(tc.name, func(t *testing.T) {
+			t.Parallel()
+			got := CalculateFee(tc.count, tc.month)
+			if got != tc.want {
+				t.Errorf("CalculateFee(%d, %q) = %d, want %d", tc.count, tc.month, got, tc.want)
+			}
+		})
+	}
+}

go/internal/domain/fees/junior.go

@@ -0,0 +1,37 @@
+package fees
+
+const JuniorFeeDefault = 500 // CZK fallback for 2+ practices when month not in JuniorFeeMonthlyRate
+
+// JuniorFeeMonthlyRate mirrors JUNIOR_MONTHLY_RATE in scripts/attendance.py.
+// Months absent from this map fall back to JuniorFeeDefault.
+var JuniorFeeMonthlyRate = map[string]int{
+	"2025-09": 250,
+	"2026-03": 250,
+}
+
+// Expected is the result of a junior fee calculation.
+// When Unknown is true the fee requires manual review (Python returns "?");
+// in that case Value is meaningless — always check Unknown first.
+type Expected struct {
+	Value   int
+	Unknown bool
+}
+
+// CalculateJuniorFee returns the junior fee for attendanceCount practices in
+// the given monthKey (format "YYYY-MM").
+//
+//	0 practices → Expected{Value: 0}
+//	1 practice  → Expected{Unknown: true}  (manual review; Python sentinel "?")
+//	2+          → Expected{Value: JuniorFeeMonthlyRate[monthKey] or JuniorFeeDefault}
+func CalculateJuniorFee(attendanceCount int, monthKey string) Expected {
+	if attendanceCount == 0 {
+		return Expected{Value: 0}
+	}
+	if attendanceCount == 1 {
+		return Expected{Unknown: true}
+	}
+	if rate, ok := JuniorFeeMonthlyRate[monthKey]; ok {
+		return Expected{Value: rate}
+	}
+	return Expected{Value: JuniorFeeDefault}
+}

go/internal/domain/fees/junior_test.go

@@ -0,0 +1,37 @@
+package fees
+
+import "testing"
+
+func TestCalculateJuniorFee(t *testing.T) {
+	t.Parallel()
+
+	// All expected outputs verified against live Python implementation on 2026-05-06:
+	//   PYTHONPATH=scripts:. python -c 'from attendance import calculate_junior_fee; print([calculate_junior_fee(c,m) for c,m in [(0,"2026-05"),(0,""),(1,"2026-05"),(1,"unknown"),(2,"2026-05"),(2,"2025-09"),(2,"2026-03"),(5,"2025-09"),(2,"2027-01"),(2,"")]])'
+	tests := []struct {
+		name  string
+		count int
+		month string
+		want  Expected
+	}{
+		{"zero short-circuits", 0, "2026-05", Expected{Value: 0}},
+		{"zero empty month", 0, "", Expected{Value: 0}},
+		{"single practice sentinel", 1, "2026-05", Expected{Unknown: true}},
+		{"single ignores monthKey", 1, "unknown", Expected{Unknown: true}},
+		{"two practices default month", 2, "2026-05", Expected{Value: 500}},
+		{"two practices reduced sept", 2, "2025-09", Expected{Value: 250}},
+		{"two practices reduced march", 2, "2026-03", Expected{Value: 250}},
+		{"high count same as two", 5, "2025-09", Expected{Value: 250}},
+		{"unknown future month falls back", 2, "2027-01", Expected{Value: 500}},
+		{"empty month falls back", 2, "", Expected{Value: 500}},
+	}
+
+	for _, tc := range tests {
+		t.Run(tc.name, func(t *testing.T) {
+			t.Parallel()
+			got := CalculateJuniorFee(tc.count, tc.month)
+			if got != tc.want {
+				t.Errorf("CalculateJuniorFee(%d, %q) = %+v, want %+v", tc.count, tc.month, got, tc.want)
+			}
+		})
+	}
+}

go/internal/domain/money/money.go

@@ -0,0 +1,49 @@
+// Package money ports Czech-locale currency parsing from scripts/infer_payments.py.
+package money
+
+import (
+	"errors"
+	"strconv"
+	"strings"
+)
+
+// ErrInvalidAmount is returned by ParseCZK when the input cannot be parsed.
+var ErrInvalidAmount = errors.New("money: invalid CZK amount")
+
+// ParseCZK parses a Czech-locale amount string and returns the value in CZK
+// as a float64. Mirrors scripts/infer_payments.py parse_czk_amount:
+//
+//   - empty input → (0, nil)
+//   - "Kč"/"CZK" suffixes stripped (case-sensitive, like Python)
+//   - comma present → comma is decimal sep, dots/spaces are thousand seps
+//     ("1.500,00" → 1500.0)
+//   - no comma, 2+ dots → all dots are thousand seps ("1.500.000" → 1500000.0)
+//   - no comma, ≤1 dot → dot is decimal sep ("1.500" → 1.5)
+//   - on parse failure → (0, ErrInvalidAmount); callers wanting Python's
+//     silent-zero behaviour can discard the error: v, _ := ParseCZK(s)
+func ParseCZK(s string) (float64, error) {
+	if s == "" {
+		return 0, nil
+	}
+
+	s = strings.ReplaceAll(s, "Kč", "")
+	s = strings.ReplaceAll(s, "CZK", "")
+	s = strings.TrimSpace(s)
+
+	if strings.ContainsRune(s, ',') {
+		s = strings.ReplaceAll(s, ".", "")
+		s = strings.ReplaceAll(s, " ", "")
+		s = strings.ReplaceAll(s, ",", ".")
+	} else if strings.Count(s, ".") > 1 {
+		s = strings.ReplaceAll(s, ".", "")
+		s = strings.ReplaceAll(s, " ", "")
+	} else {
+		s = strings.ReplaceAll(s, " ", "")
+	}
+
+	v, err := strconv.ParseFloat(s, 64)
+	if err != nil {
+		return 0, ErrInvalidAmount
+	}
+	return v, nil
+}

go/internal/domain/money/money_test.go

@@ -0,0 +1,67 @@
+package money
+
+import (
+	"testing"
+)
+
+func TestParseCZK(t *testing.T) {
+	t.Parallel()
+
+	// All expected outputs verified against live Python implementation on 2026-05-06:
+	//   PYTHONPATH=scripts:. python -c '
+	//   from infer_payments import parse_czk_amount
+	//   for v in [None, "", "0", "500", "500 Kč", "500 CZK",
+	//             "1 500", "1500.00", "1 500.00",
+	//             "1.500,00", "1500,5", "1.500.000",
+	//             "1.500", "abc", "  ", "100,5 Kč"]:
+	//       print(repr(v), "->", parse_czk_amount(v))
+	//   '
+	tests := []struct {
+		name    string
+		input   string
+		want    float64
+		wantErr bool
+	}{
+		{"empty string", "", 0, false},
+		{"zero string", "0", 0, false},
+		{"plain integer", "500", 500, false},
+		{"with Kč suffix", "500 Kč", 500, false},
+		{"with CZK suffix", "500 CZK", 500, false},
+		{"space thousand sep", "1 500", 1500, false},
+		{"dot decimal", "1500.00", 1500, false},
+		{"space thousands dot decimal", "1 500.00", 1500, false},
+		{"dot thousand comma decimal", "1.500,00", 1500, false},
+		{"comma decimal no thousands", "1500,5", 1500.5, false},
+		{"multiple dot thousand seps", "1.500.000", 1500000, false},
+		{"single dot is decimal heuristic", "1.500", 1.5, false},
+		{"comma decimal with Kč", "100,5 Kč", 100.5, false},
+		{"garbage text", "abc", 0, true},
+		{"spaces only", "  ", 0, true},
+	}
+
+	for _, tc := range tests {
+		t.Run(tc.name, func(t *testing.T) {
+			t.Parallel()
+			got, err := ParseCZK(tc.input)
+			if (err != nil) != tc.wantErr {
+				t.Errorf("ParseCZK(%q) error = %v, wantErr %v", tc.input, err, tc.wantErr)
+			}
+			if got != tc.want {
+				t.Errorf("ParseCZK(%q) = %v, want %v", tc.input, got, tc.want)
+			}
+		})
+	}
+}
+
+// TestParseCZKSilentZero documents that discarding the error recovers Python's
+// silent-zero behaviour for any garbage input.
+func TestParseCZKSilentZero(t *testing.T) {
+	t.Parallel()
+
+	for _, s := range []string{"abc", "  ", "Kč", "CZK"} {
+		v, _ := ParseCZK(s)
+		if v != 0 {
+			t.Errorf("ParseCZK(%q) silent-zero: got %v, want 0", s, v)
+		}
+	}
+}

scripts/match_payments.py

@@ -17,6 +17,15 @@ from czech_utils import normalize, parse_month_references
 from sync_fio_to_sheets import get_sheets_service, DEFAULT_SPREADSHEET_ID
 
 
+def canonical_member_key(name: str) -> str:
+    """Diacritic-, case-, and whitespace-insensitive key for member-name matching.
+
+    Used to resolve `Person`-column values from the payments sheet to canonical
+    attendance-sheet names, tolerating cells like "Maria Maco" vs "Mária Maco".
+    """
+    return re.sub(r"\s+", " ", normalize(name)).strip()
+
+
 # ---------------------------------------------------------------------------
 # Name matching
 # ---------------------------------------------------------------------------
@@ -309,6 +318,12 @@ def reconcile(
     member_tiers = {name: tier for name, tier, _ in members}
     member_fees = {name: fees for name, _, fees in members}
 
+    # Map canonical key → first attendance-sheet name with that key, so a
+    # `Person` cell that drifts in diacritics/case/whitespace still resolves.
+    canonical_by_key: dict[str, str] = {}
+    for name in member_names:
+        canonical_by_key.setdefault(canonical_member_key(name), name)
+
     # Initialize ledger
     ledger: dict[str, dict[str, dict]] = {}
     other_ledger: dict[str, list] = {}
@@ -386,8 +401,9 @@ def reconcile(
         if is_other:
             num_allocations = len(matched_members)
             per_allocation = amount / num_allocations if num_allocations > 0 else 0
-            for member_name, confidence in matched_members:
-                if member_name in other_ledger:
+            for raw_member_name, confidence in matched_members:
+                member_name = canonical_by_key.get(canonical_member_key(raw_member_name))
+                if member_name is not None:
                     other_ledger[member_name].append({
                         "amount": per_allocation,
                         "date": tx["date"],
@@ -400,14 +416,20 @@ def reconcile(
 
         member_share = amount / len(matched_members) if matched_members else 0
 
-        for member_name, confidence in matched_members:
-            if member_name not in ledger:
+        for raw_member_name, confidence in matched_members:
+            member_name = canonical_by_key.get(canonical_member_key(raw_member_name))
+            if member_name is None:
                 logger.warning(
                     "Payment matched to unknown member %r (tx: %s, %s) — adding to unmatched",
-                    member_name, tx.get("date", "?"), tx.get("message", "?"),
+                    raw_member_name, tx.get("date", "?"), tx.get("message", "?"),
                 )
                 unmatched.append(tx)
                 continue
+            if member_name != raw_member_name:
+                logger.info(
+                    "Person cell %r resolved to canonical member %r — consider fixing the sheet",
+                    raw_member_name, member_name,
+                )
 
             in_window = [(m, ledger[member_name][m]["expected"]) for m in matched_months if m in ledger[member_name]]
             out_of_window = [m for m in matched_months if m not in ledger[member_name]]

templates/adults.html

@@ -365,6 +365,19 @@
             border-bottom: 1px dashed #222;
         }
 
+        .raw-toggle {
+            color: #333;
+            font-size: 9px;
+            text-transform: lowercase;
+            margin-left: 8px;
+            text-decoration: none;
+            letter-spacing: 0;
+        }
+
+        .raw-toggle:hover {
+            color: #666;
+        }
+
         .modal-table {
             width: 100%;
             border-collapse: collapse;
@@ -680,6 +693,16 @@
                     <!-- Filled by JS -->
                 </div>
             </div>
+
+            <div class="modal-section">
+                <div class="modal-section-title">
+                    Raw Payments
+                    <a href="#" id="rawPaymentsToggle" class="raw-toggle" onclick="toggleRawPayments(event)">[show]</a>
+                </div>
+                <div id="modalRawList" class="tx-list" style="display: none;">
+                    <!-- Filled by JS -->
+                </div>
+            </div>
         </div>
     </div>
 
@@ -696,6 +719,7 @@
         const memberData = {{ member_data| safe }};
         const sortedMonths = {{ raw_months| tojson }};
         const monthLabels = {{ month_labels_json| safe }};
+        const rawPaymentsByPerson = {{ raw_payments_json| safe }};
         let currentMemberName = null;
 
         function showMemberDetails(name) {
@@ -828,9 +852,49 @@
                 });
             }
 
+            // Raw payments (debug) — hidden by default, reset toggle on each open
+            const rawList = document.getElementById('modalRawList');
+            const rawToggle = document.getElementById('rawPaymentsToggle');
+            rawList.style.display = 'none';
+            rawToggle.textContent = '[show]';
+            rawList.innerHTML = '';
+            const rawRows = rawPaymentsByPerson[name] || [];
+            if (rawRows.length === 0) {
+                rawList.innerHTML = '<div style="color: #444; font-style: italic; padding: 10px 0;">No raw payments tied to this member.</div>';
+            } else {
+                rawRows.forEach(tx => {
+                    const inferredNote = tx.inferred_amount && tx.inferred_amount !== '' && tx.inferred_amount != tx.amount
+                        ? ` <span style="color:#888;">(inferred: ${tx.inferred_amount})</span>`
+                        : '';
+                    const manualNote = tx.manual_fix ? ' <span style="color:#ffaa00;">[manual fix]</span>' : '';
+                    const bankIdNote = tx.bank_id ? `<span style="color:#444;"> · bank_id: ${tx.bank_id}</span>` : '';
+                    const item = document.createElement('div');
+                    item.className = 'tx-item';
+                    item.innerHTML = `
+                        <div class="tx-meta">${tx.date} | purpose: ${tx.purpose || '—'}${manualNote}</div>
+                        <div class="tx-main">
+                            <span class="tx-amount">${tx.amount} CZK${inferredNote}</span>
+                            <span class="tx-sender">${tx.sender || ''}</span>
+                        </div>
+                        <div class="tx-msg">${tx.message || ''}</div>
+                        <div class="tx-meta">${tx.person || ''}${bankIdNote}</div>
+                    `;
+                    rawList.appendChild(item);
+                });
+            }
+
             document.getElementById('memberModal').classList.add('active');
         }
 
+        function toggleRawPayments(ev) {
+            ev.preventDefault();
+            const list = document.getElementById('modalRawList');
+            const link = document.getElementById('rawPaymentsToggle');
+            const hidden = list.style.display === 'none';
+            list.style.display = hidden ? 'block' : 'none';
+            link.textContent = hidden ? '[hide]' : '[show]';
+        }
+
         function closeModal(id) {
             if (id) {
                 document.getElementById(id).style.display = 'none';

templates/juniors.html

@@ -365,6 +365,19 @@
             border-bottom: 1px dashed #222;
         }
 
+        .raw-toggle {
+            color: #333;
+            font-size: 9px;
+            text-transform: lowercase;
+            margin-left: 8px;
+            text-decoration: none;
+            letter-spacing: 0;
+        }
+
+        .raw-toggle:hover {
+            color: #666;
+        }
+
         .modal-table {
             width: 100%;
             border-collapse: collapse;
@@ -661,6 +674,16 @@
                     <!-- Filled by JS -->
                 </div>
             </div>
+
+            <div class="modal-section">
+                <div class="modal-section-title">
+                    Raw Payments
+                    <a href="#" id="rawPaymentsToggle" class="raw-toggle" onclick="toggleRawPayments(event)">[show]</a>
+                </div>
+                <div id="modalRawList" class="tx-list" style="display: none;">
+                    <!-- Filled by JS -->
+                </div>
+            </div>
         </div>
     </div>
 
@@ -677,6 +700,7 @@
         const memberData = {{ member_data| safe }};
         const sortedMonths = {{ raw_months| tojson }};
         const monthLabels = {{ month_labels_json| safe }};
+        const rawPaymentsByPerson = {{ raw_payments_json| safe }};
         let currentMemberName = null;
 
         function showMemberDetails(name) {
@@ -809,9 +833,49 @@
                 });
             }
 
+            // Raw payments (debug) — hidden by default, reset toggle on each open
+            const rawList = document.getElementById('modalRawList');
+            const rawToggle = document.getElementById('rawPaymentsToggle');
+            rawList.style.display = 'none';
+            rawToggle.textContent = '[show]';
+            rawList.innerHTML = '';
+            const rawRows = rawPaymentsByPerson[name] || [];
+            if (rawRows.length === 0) {
+                rawList.innerHTML = '<div style="color: #444; font-style: italic; padding: 10px 0;">No raw payments tied to this member.</div>';
+            } else {
+                rawRows.forEach(tx => {
+                    const inferredNote = tx.inferred_amount && tx.inferred_amount !== '' && tx.inferred_amount != tx.amount
+                        ? ` <span style="color:#888;">(inferred: ${tx.inferred_amount})</span>`
+                        : '';
+                    const manualNote = tx.manual_fix ? ' <span style="color:#ffaa00;">[manual fix]</span>' : '';
+                    const bankIdNote = tx.bank_id ? `<span style="color:#444;"> · bank_id: ${tx.bank_id}</span>` : '';
+                    const item = document.createElement('div');
+                    item.className = 'tx-item';
+                    item.innerHTML = `
+                        <div class="tx-meta">${tx.date} | purpose: ${tx.purpose || '—'}${manualNote}</div>
+                        <div class="tx-main">
+                            <span class="tx-amount">${tx.amount} CZK${inferredNote}</span>
+                            <span class="tx-sender">${tx.sender || ''}</span>
+                        </div>
+                        <div class="tx-msg">${tx.message || ''}</div>
+                        <div class="tx-meta">${tx.person || ''}${bankIdNote}</div>
+                    `;
+                    rawList.appendChild(item);
+                });
+            }
+
             document.getElementById('memberModal').classList.add('active');
         }
 
+        function toggleRawPayments(ev) {
+            ev.preventDefault();
+            const list = document.getElementById('modalRawList');
+            const link = document.getElementById('rawPaymentsToggle');
+            const hidden = list.style.display === 'none';
+            list.style.display = hidden ? 'block' : 'none';
+            link.textContent = hidden ? '[hide]' : '[show]';
+        }
+
         function closeModal(id) {
             if (id) {
                 document.getElementById(id).style.display = 'none';

tests/test_app.py

@@ -19,67 +19,6 @@ class TestWebApp(unittest.TestCase):
         self.assertEqual(response.status_code, 200)
         self.assertIn(b'url=/adults', response.data)
 
-    @patch('app.get_cached_data', side_effect=_bypass_cache)
-    @patch('app.get_members_with_fees')
-    @patch('app.fetch_exceptions', return_value={})
-    def test_fees_route(self, mock_exceptions, mock_get_members, mock_cache):
-        """Test that /fees returns 200 and renders the dashboard"""
-        mock_get_members.return_value = (
-            [('Test Member', 'A', {'2026-01': (750, 4)})],
-            ['2026-01']
-        )
-
-        response = self.client.get('/fees')
-        self.assertEqual(response.status_code, 200)
-        self.assertIn(b'FUJ Fees Dashboard', response.data)
-        self.assertIn(b'Test Member', response.data)
-
-    @patch('app.get_cached_data', side_effect=_bypass_cache)
-    @patch('app.get_junior_members_with_fees')
-    @patch('app.fetch_exceptions', return_value={})
-    def test_fees_juniors_route(self, mock_exceptions, mock_get_junior_members, mock_cache):
-        """Test that /fees-juniors returns 200 and renders the junior dashboard"""
-        mock_get_junior_members.return_value = (
-            [
-                ('Test Junior 1', 'J', {'2026-01': ('?', 1, 0, 1)}),
-                ('Test Junior 2', 'J', {'2026-01': (500, 4, 1, 3)})
-            ],
-            ['2026-01']
-        )
-
-        response = self.client.get('/fees-juniors')
-        self.assertEqual(response.status_code, 200)
-        self.assertIn(b'FUJ Junior Fees Dashboard', response.data)
-        self.assertIn(b'Test Junior 1', response.data)
-        self.assertIn(b'? / 1 (J)', response.data)
-        self.assertIn(b'500 CZK / 4 (1A+3J)', response.data)
-
-    @patch('app.get_cached_data', side_effect=_bypass_cache)
-    @patch('app.fetch_sheet_data')
-    @patch('app.fetch_exceptions', return_value={})
-    @patch('app.get_members_with_fees')
-    def test_reconcile_route(self, mock_get_members, mock_exceptions, mock_fetch_sheet, mock_cache):
-        """Test that /reconcile returns 200 and shows matches"""
-        mock_get_members.return_value = (
-            [('Test Member', 'A', {'2026-01': (750, 4)})],
-            ['2026-01']
-        )
-        mock_fetch_sheet.return_value = [{
-            'date': '2026-01-01',
-            'amount': 750,
-            'person': 'Test Member',
-            'purpose': '2026-01',
-            'message': 'test payment',
-            'sender': 'External Bank User',
-            'inferred_amount': 750
-        }]
-
-        response = self.client.get('/reconcile')
-        self.assertEqual(response.status_code, 200)
-        self.assertIn(b'Payment Reconciliation', response.data)
-        self.assertIn(b'Test Member', response.data)
-        self.assertIn(b'OK', response.data)
-
     @patch('app.get_cached_data', side_effect=_bypass_cache)
     @patch('app.fetch_sheet_data')
     def test_payments_route(self, mock_fetch_sheet, mock_cache):
@@ -98,38 +37,6 @@ class TestWebApp(unittest.TestCase):
         self.assertIn(b'Test Member', response.data)
         self.assertIn(b'Direct Member Payment', response.data)
 
-    @patch('app.get_cached_data', side_effect=_bypass_cache)
-    @patch('app.fetch_sheet_data')
-    @patch('app.fetch_exceptions')
-    @patch('app.get_junior_members_with_fees')
-    def test_reconcile_juniors_route(self, mock_get_junior, mock_exceptions, mock_transactions, mock_cache):
-        """Test that /reconcile-juniors correctly computes balances for juniors."""
-        mock_get_junior.return_value = (
-            [
-                ('Junior One', 'J', {'2026-01': (500, 4, 2, 2)}),
-                ('Junior Two', 'X', {'2026-01': ('?', 1, 0, 1)})
-            ],
-            ['2026-01']
-        )
-        mock_exceptions.return_value = {}
-        mock_transactions.return_value = [{
-            'date': '2026-01-15',
-            'amount': 500,
-            'person': 'Junior One',
-            'purpose': '2026-01',
-            'message': '',
-            'sender': 'Parent',
-            'inferred_amount': 500
-        }]
-
-        response = self.client.get('/reconcile-juniors')
-        self.assertEqual(response.status_code, 200)
-        self.assertIn(b'Junior Payment Reconciliation', response.data)
-        self.assertIn(b'Junior One', response.data)
-        self.assertIn(b'Junior Two', response.data)
-        self.assertIn(b'OK', response.data)
-        self.assertIn(b'?', response.data)
-
     @patch('app.get_cached_data', side_effect=_bypass_cache)
     @patch('app.fetch_sheet_data')
     @patch('app.fetch_exceptions', return_value={})

tests/test_match_payments.py

@@ -0,0 +1,69 @@
+import unittest
+
+from scripts.match_payments import canonical_member_key, reconcile
+
+
+class TestCanonicalMemberKey(unittest.TestCase):
+    def test_diacritics_and_case_collapse(self):
+        self.assertEqual(canonical_member_key("Mária Maco"), "maria maco")
+        self.assertEqual(canonical_member_key("MARIA MACO"), "maria maco")
+        self.assertEqual(canonical_member_key("maria maco"), "maria maco")
+
+    def test_whitespace_runs_collapse(self):
+        self.assertEqual(canonical_member_key("Mária  Maco"), "maria maco")
+        self.assertEqual(canonical_member_key("  Mária Maco  "), "maria maco")
+
+    def test_unknown_name_passes_through_normalized(self):
+        # Two genuinely different names must not collide.
+        self.assertNotEqual(
+            canonical_member_key("Mária Maco"),
+            canonical_member_key("Marek Maco"),
+        )
+
+
+class TestReconcileTolerantPersonMatching(unittest.TestCase):
+    def _members(self):
+        return [("Mária Maco", "A", {"2026-04": (750, 4)})]
+
+    def _tx(self, person):
+        return {
+            "date": "2026-04-15",
+            "amount": 750,
+            "person": person,
+            "purpose": "2026-04",
+            "inferred_amount": 750,
+            "sender": "Maco Family",
+            "message": "fee",
+        }
+
+    def test_person_without_diacritics_matches(self):
+        result = reconcile(self._members(), ["2026-04"], [self._tx("Maria Maco")], {})
+
+        member = result["members"]["Mária Maco"]
+        self.assertEqual(member["months"]["2026-04"]["paid"], 750)
+        self.assertEqual(len(member["months"]["2026-04"]["transactions"]), 1)
+        self.assertEqual(result["unmatched"], [])
+
+    def test_person_with_extra_whitespace_matches(self):
+        result = reconcile(self._members(), ["2026-04"], [self._tx("Mária  Maco")], {})
+
+        self.assertEqual(result["members"]["Mária Maco"]["months"]["2026-04"]["paid"], 750)
+        self.assertEqual(result["unmatched"], [])
+
+    def test_person_lowercase_matches(self):
+        result = reconcile(self._members(), ["2026-04"], [self._tx("mária maco")], {})
+
+        self.assertEqual(result["members"]["Mária Maco"]["months"]["2026-04"]["paid"], 750)
+        self.assertEqual(result["unmatched"], [])
+
+    def test_truly_unknown_person_still_unmatched(self):
+        result = reconcile(
+            self._members(), ["2026-04"], [self._tx("Někdo Neznámý")], {}
+        )
+
+        self.assertEqual(result["members"]["Mária Maco"]["months"]["2026-04"]["paid"], 0)
+        self.assertEqual(len(result["unmatched"]), 1)
+
+
+if __name__ == "__main__":
+    unittest.main()