count overpay as debts when fronted + add debt writeoff

README.md

@@ -12,6 +12,7 @@ The idea is pretty simple: public pages for stats and session history, plus a sm
 - admin login for recording events
 - open / closed session tracking
 - payout tracking with `paid` events
+- front debt write-offs with `front_writeoff` events
 - session and player charts
 - CSV import / export from the admin page
 - append-only `entries.csv` ledger instead of overwriting old rows
@@ -36,8 +37,12 @@ Each row is an event, not a final snapshot. Instead of editing an old row, I app
 Current event types:
 
 - `buyin`
+- `front`
+- `front_writeoff`
 - `cashout`
 - `paid`
+- `rollover_in`
+- `rollover_out`
 - `note`
 - `session_open`
 - `session_close`
@@ -47,6 +52,7 @@ A few examples:
 - another `buyin` for a rebuy
 - another `cashout` if chip counts are corrected later
 - a `paid` event when someone is actually settled up
+- a `front_writeoff` event when a front will not be collected
 - a `note` event for bookkeeping context
 - `session_open` / `session_close` to mark whether a game night is still live
 
@@ -61,7 +67,7 @@ Main file:
 Header:
 
 ```csv
-id,created_at,session_date,player_name,event_type,amount_cents,note,actor
+id,created_at,session_id,session_date,player_name,event_type,amount_cents,note,actor
 ```
 
 Amounts are stored in cents to avoid floating-point issues.